changeset 4840:726d2d4913fc

Merge
author nloodin
date Wed, 19 Jun 2013 18:13:52 +0200
parents f9709e27a876 cd54c7e92908
children 9f9c0a163cc5
files
diffstat 58 files changed, 1416 insertions(+), 466 deletions(-) [+]
line wrap: on
line diff
--- a/make/linux/makefiles/gcc.make	Fri Jun 14 07:27:22 2013 -0700
+++ b/make/linux/makefiles/gcc.make	Wed Jun 19 18:13:52 2013 +0200
@@ -214,7 +214,7 @@
   WARNINGS_ARE_ERRORS += -Wno-return-type -Wno-empty-body
 endif
 
-WARNING_FLAGS = -Wpointer-arith -Wsign-compare -Wundef -Wunused-function
+WARNING_FLAGS = -Wpointer-arith -Wsign-compare -Wundef -Wunused-function -Wunused-value
 
 ifeq ($(USE_CLANG),)
   # Since GCC 4.3, -Wconversion has changed its meanings to warn these implicit
--- a/src/cpu/x86/vm/globals_x86.hpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/cpu/x86/vm/globals_x86.hpp	Wed Jun 19 18:13:52 2013 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -55,7 +55,7 @@
 define_pd_global(intx, InlineFrequencyCount,     100);
 define_pd_global(intx, InlineSmallCode,          1000);
 
-define_pd_global(intx, StackYellowPages, 2);
+define_pd_global(intx, StackYellowPages, NOT_WINDOWS(2) WINDOWS_ONLY(3));
 define_pd_global(intx, StackRedPages, 1);
 #ifdef AMD64
 // Very large C++ stack frames using solaris-amd64 optimized builds
--- a/src/cpu/x86/vm/stubGenerator_x86_32.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/cpu/x86/vm/stubGenerator_x86_32.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -83,7 +83,7 @@
  private:
 
 #ifdef PRODUCT
-#define inc_counter_np(counter) (0)
+#define inc_counter_np(counter) ((void)0)
 #else
   void inc_counter_np_(int& counter) {
     __ incrementl(ExternalAddress((address)&counter));
--- a/src/cpu/x86/vm/stubGenerator_x86_64.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/cpu/x86/vm/stubGenerator_x86_64.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -81,7 +81,7 @@
  private:
 
 #ifdef PRODUCT
-#define inc_counter_np(counter) (0)
+#define inc_counter_np(counter) ((void)0)
 #else
   void inc_counter_np_(int& counter) {
     // This can destroy rscratch1 if counter is far from the code cache
--- a/src/os/bsd/dtrace/jvm_dtrace.c	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/os/bsd/dtrace/jvm_dtrace.c	Wed Jun 19 18:13:52 2013 +0200
@@ -122,9 +122,7 @@
 }
 
 static int file_close(int fd) {
-    int ret;
-    RESTARTABLE(close(fd), ret);
-    return ret;
+    return close(fd);
 }
 
 static int file_read(int fd, char* buf, int len) {
--- a/src/os/bsd/vm/attachListener_bsd.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/os/bsd/vm/attachListener_bsd.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -199,7 +199,7 @@
   ::unlink(initial_path);
   int res = ::bind(listener, (struct sockaddr*)&addr, sizeof(addr));
   if (res == -1) {
-    RESTARTABLE(::close(listener), res);
+    ::close(listener);
     return -1;
   }
 
@@ -217,7 +217,7 @@
     }
   }
   if (res == -1) {
-    RESTARTABLE(::close(listener), res);
+    ::close(listener);
     ::unlink(initial_path);
     return -1;
   }
@@ -345,24 +345,21 @@
     uid_t puid;
     gid_t pgid;
     if (::getpeereid(s, &puid, &pgid) != 0) {
-      int res;
-      RESTARTABLE(::close(s), res);
+      ::close(s);
       continue;
     }
     uid_t euid = geteuid();
     gid_t egid = getegid();
 
     if (puid != euid || pgid != egid) {
-      int res;
-      RESTARTABLE(::close(s), res);
+      ::close(s);
       continue;
     }
 
     // peer credential look okay so we read the request
     BsdAttachOperation* op = read_request(s);
     if (op == NULL) {
-      int res;
-      RESTARTABLE(::close(s), res);
+      ::close(s);
       continue;
     } else {
       return op;
@@ -413,7 +410,7 @@
   }
 
   // done
-  RESTARTABLE(::close(this->socket()), rc);
+  ::close(this->socket());
 
   // were we externally suspended while we were waiting?
   thread->check_and_wait_while_suspended();
--- a/src/os/bsd/vm/os_bsd.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/os/bsd/vm/os_bsd.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -2074,6 +2074,13 @@
   }
 }
 
+static void warn_fail_commit_memory(char* addr, size_t size, bool exec,
+                                    int err) {
+  warning("INFO: os::commit_memory(" PTR_FORMAT ", " SIZE_FORMAT
+          ", %d) failed; error='%s' (errno=%d)", addr, size, exec,
+          strerror(err), err);
+}
+
 // NOTE: Bsd kernel does not really reserve the pages for us.
 //       All it does is to check if there are enough free pages
 //       left at the time of mmap(). This could be a potential
@@ -2082,18 +2089,45 @@
   int prot = exec ? PROT_READ|PROT_WRITE|PROT_EXEC : PROT_READ|PROT_WRITE;
 #ifdef __OpenBSD__
   // XXX: Work-around mmap/MAP_FIXED bug temporarily on OpenBSD
-  return ::mprotect(addr, size, prot) == 0;
+  if (::mprotect(addr, size, prot) == 0) {
+    return true;
+  }
 #else
   uintptr_t res = (uintptr_t) ::mmap(addr, size, prot,
                                    MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0);
-  return res != (uintptr_t) MAP_FAILED;
+  if (res != (uintptr_t) MAP_FAILED) {
+    return true;
+  }
 #endif
+
+  // Warn about any commit errors we see in non-product builds just
+  // in case mmap() doesn't work as described on the man page.
+  NOT_PRODUCT(warn_fail_commit_memory(addr, size, exec, errno);)
+
+  return false;
 }
 
-
 bool os::pd_commit_memory(char* addr, size_t size, size_t alignment_hint,
                        bool exec) {
-  return commit_memory(addr, size, exec);
+  // alignment_hint is ignored on this OS
+  return pd_commit_memory(addr, size, exec);
+}
+
+void os::pd_commit_memory_or_exit(char* addr, size_t size, bool exec,
+                                  const char* mesg) {
+  assert(mesg != NULL, "mesg must be specified");
+  if (!pd_commit_memory(addr, size, exec)) {
+    // add extra info in product mode for vm_exit_out_of_memory():
+    PRODUCT_ONLY(warn_fail_commit_memory(addr, size, exec, errno);)
+    vm_exit_out_of_memory(size, OOM_MMAP_ERROR, mesg);
+  }
+}
+
+void os::pd_commit_memory_or_exit(char* addr, size_t size,
+                                  size_t alignment_hint, bool exec,
+                                  const char* mesg) {
+  // alignment_hint is ignored on this OS
+  pd_commit_memory_or_exit(addr, size, exec, mesg);
 }
 
 void os::pd_realign_memory(char *addr, size_t bytes, size_t alignment_hint) {
@@ -2148,7 +2182,7 @@
 }
 
 bool os::pd_create_stack_guard_pages(char* addr, size_t size) {
-  return os::commit_memory(addr, size);
+  return os::commit_memory(addr, size, !ExecMem);
 }
 
 // If this is a growable mapping, remove the guard pages entirely by
@@ -2320,21 +2354,20 @@
   }
 
   // The memory is committed
-  address pc = CALLER_PC;
-  MemTracker::record_virtual_memory_reserve((address)addr, bytes, pc);
-  MemTracker::record_virtual_memory_commit((address)addr, bytes, pc);
+  MemTracker::record_virtual_memory_reserve_and_commit((address)addr, bytes, mtNone, CALLER_PC);
 
   return addr;
 }
 
 bool os::release_memory_special(char* base, size_t bytes) {
+  MemTracker::Tracker tkr = MemTracker::get_virtual_memory_release_tracker();
   // detaching the SHM segment will also delete it, see reserve_memory_special()
   int rslt = shmdt(base);
   if (rslt == 0) {
-    MemTracker::record_virtual_memory_uncommit((address)base, bytes);
-    MemTracker::record_virtual_memory_release((address)base, bytes);
+    tkr.record((address)base, bytes);
     return true;
   } else {
+    tkr.discard();
     return false;
   }
 
@@ -3512,7 +3545,7 @@
 
   if (!UseMembar) {
     address mem_serialize_page = (address) ::mmap(NULL, Bsd::page_size(), PROT_READ | PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
-    guarantee( mem_serialize_page != NULL, "mmap Failed for memory serialize page");
+    guarantee( mem_serialize_page != MAP_FAILED, "mmap Failed for memory serialize page");
     os::set_memory_serialize_page( mem_serialize_page );
 
 #ifndef PRODUCT
--- a/src/os/bsd/vm/os_bsd.inline.hpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/os/bsd/vm/os_bsd.inline.hpp	Wed Jun 19 18:13:52 2013 +0200
@@ -178,11 +178,11 @@
 }
 
 inline int os::close(int fd) {
-  RESTARTABLE_RETURN_INT(::close(fd));
+  return ::close(fd);
 }
 
 inline int os::socket_close(int fd) {
-  RESTARTABLE_RETURN_INT(::close(fd));
+  return ::close(fd);
 }
 
 inline int os::socket(int domain, int type, int protocol) {
--- a/src/os/bsd/vm/perfMemory_bsd.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/os/bsd/vm/perfMemory_bsd.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -60,7 +60,7 @@
   }
 
   // commit memory
-  if (!os::commit_memory(mapAddress, size)) {
+  if (!os::commit_memory(mapAddress, size, !ExecMem)) {
     if (PrintMiscellaneous && Verbose) {
       warning("Could not commit PerfData memory\n");
     }
@@ -120,7 +120,7 @@
       addr += result;
     }
 
-    RESTARTABLE(::close(fd), result);
+    result = ::close(fd);
     if (PrintMiscellaneous && Verbose) {
       if (result == OS_ERR) {
         warning("Could not close %s: %s\n", destfile, strerror(errno));
@@ -632,7 +632,7 @@
     if (PrintMiscellaneous && Verbose) {
       warning("could not set shared memory file size: %s\n", strerror(errno));
     }
-    RESTARTABLE(::close(fd), result);
+    ::close(fd);
     return -1;
   }
 
@@ -656,7 +656,7 @@
   if (result != -1) {
     return fd;
   } else {
-    RESTARTABLE(::close(fd), result);
+    ::close(fd);
     return -1;
   }
 }
@@ -734,9 +734,7 @@
 
   mapAddress = (char*)::mmap((char*)0, size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
 
-  // attempt to close the file - restart it if it was interrupted,
-  // but ignore other failures
-  RESTARTABLE(::close(fd), result);
+  result = ::close(fd);
   assert(result != OS_ERR, "could not close file");
 
   if (mapAddress == MAP_FAILED) {
@@ -755,8 +753,7 @@
   (void)::memset((void*) mapAddress, 0, size);
 
   // it does not go through os api, the operation has to record from here
-  MemTracker::record_virtual_memory_reserve((address)mapAddress, size, CURRENT_PC);
-  MemTracker::record_virtual_memory_type((address)mapAddress, mtInternal);
+  MemTracker::record_virtual_memory_reserve((address)mapAddress, size, mtInternal, CURRENT_PC);
 
   return mapAddress;
 }
@@ -909,7 +906,7 @@
 
   // attempt to close the file - restart if it gets interrupted,
   // but ignore other failures
-  RESTARTABLE(::close(fd), result);
+  result = ::close(fd);
   assert(result != OS_ERR, "could not close file");
 
   if (mapAddress == MAP_FAILED) {
@@ -921,8 +918,7 @@
   }
 
   // it does not go through os api, the operation has to record from here
-  MemTracker::record_virtual_memory_reserve((address)mapAddress, size, CURRENT_PC);
-  MemTracker::record_virtual_memory_type((address)mapAddress, mtInternal);
+  MemTracker::record_virtual_memory_reserve((address)mapAddress, size, mtInternal, CURRENT_PC);
 
   *addr = mapAddress;
   *sizep = size;
--- a/src/os/linux/vm/attachListener_linux.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/os/linux/vm/attachListener_linux.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -199,7 +199,7 @@
   ::unlink(initial_path);
   int res = ::bind(listener, (struct sockaddr*)&addr, sizeof(addr));
   if (res == -1) {
-    RESTARTABLE(::close(listener), res);
+    ::close(listener);
     return -1;
   }
 
@@ -212,7 +212,7 @@
       }
   }
   if (res == -1) {
-    RESTARTABLE(::close(listener), res);
+    ::close(listener);
     ::unlink(initial_path);
     return -1;
   }
@@ -340,24 +340,21 @@
     struct ucred cred_info;
     socklen_t optlen = sizeof(cred_info);
     if (::getsockopt(s, SOL_SOCKET, SO_PEERCRED, (void*)&cred_info, &optlen) == -1) {
-      int res;
-      RESTARTABLE(::close(s), res);
+      ::close(s);
       continue;
     }
     uid_t euid = geteuid();
     gid_t egid = getegid();
 
     if (cred_info.uid != euid || cred_info.gid != egid) {
-      int res;
-      RESTARTABLE(::close(s), res);
+      ::close(s);
       continue;
     }
 
     // peer credential look okay so we read the request
     LinuxAttachOperation* op = read_request(s);
     if (op == NULL) {
-      int res;
-      RESTARTABLE(::close(s), res);
+      ::close(s);
       continue;
     } else {
       return op;
@@ -408,7 +405,7 @@
   }
 
   // done
-  RESTARTABLE(::close(this->socket()), rc);
+  ::close(this->socket());
 
   // were we externally suspended while we were waiting?
   thread->check_and_wait_while_suspended();
--- a/src/os/linux/vm/os_linux.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/os/linux/vm/os_linux.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -2612,11 +2612,49 @@
   }
 }
 
+static bool recoverable_mmap_error(int err) {
+  // See if the error is one we can let the caller handle. This
+  // list of errno values comes from JBS-6843484. I can't find a
+  // Linux man page that documents this specific set of errno
+  // values so while this list currently matches Solaris, it may
+  // change as we gain experience with this failure mode.
+  switch (err) {
+  case EBADF:
+  case EINVAL:
+  case ENOTSUP:
+    // let the caller deal with these errors
+    return true;
+
+  default:
+    // Any remaining errors on this OS can cause our reserved mapping
+    // to be lost. That can cause confusion where different data
+    // structures think they have the same memory mapped. The worst
+    // scenario is if both the VM and a library think they have the
+    // same memory mapped.
+    return false;
+  }
+}
+
+static void warn_fail_commit_memory(char* addr, size_t size, bool exec,
+                                    int err) {
+  warning("INFO: os::commit_memory(" PTR_FORMAT ", " SIZE_FORMAT
+          ", %d) failed; error='%s' (errno=%d)", addr, size, exec,
+          strerror(err), err);
+}
+
+static void warn_fail_commit_memory(char* addr, size_t size,
+                                    size_t alignment_hint, bool exec,
+                                    int err) {
+  warning("INFO: os::commit_memory(" PTR_FORMAT ", " SIZE_FORMAT
+          ", " SIZE_FORMAT ", %d) failed; error='%s' (errno=%d)", addr, size,
+          alignment_hint, exec, strerror(err), err);
+}
+
 // NOTE: Linux kernel does not really reserve the pages for us.
 //       All it does is to check if there are enough free pages
 //       left at the time of mmap(). This could be a potential
 //       problem.
-bool os::pd_commit_memory(char* addr, size_t size, bool exec) {
+int os::Linux::commit_memory_impl(char* addr, size_t size, bool exec) {
   int prot = exec ? PROT_READ|PROT_WRITE|PROT_EXEC : PROT_READ|PROT_WRITE;
   uintptr_t res = (uintptr_t) ::mmap(addr, size, prot,
                                    MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0);
@@ -2624,9 +2662,32 @@
     if (UseNUMAInterleaving) {
       numa_make_global(addr, size);
     }
-    return true;
-  }
-  return false;
+    return 0;
+  }
+
+  int err = errno;  // save errno from mmap() call above
+
+  if (!recoverable_mmap_error(err)) {
+    warn_fail_commit_memory(addr, size, exec, err);
+    vm_exit_out_of_memory(size, OOM_MMAP_ERROR, "committing reserved memory.");
+  }
+
+  return err;
+}
+
+bool os::pd_commit_memory(char* addr, size_t size, bool exec) {
+  return os::Linux::commit_memory_impl(addr, size, exec) == 0;
+}
+
+void os::pd_commit_memory_or_exit(char* addr, size_t size, bool exec,
+                                  const char* mesg) {
+  assert(mesg != NULL, "mesg must be specified");
+  int err = os::Linux::commit_memory_impl(addr, size, exec);
+  if (err != 0) {
+    // the caller wants all commit errors to exit with the specified mesg:
+    warn_fail_commit_memory(addr, size, exec, err);
+    vm_exit_out_of_memory(size, OOM_MMAP_ERROR, mesg);
+  }
 }
 
 // Define MAP_HUGETLB here so we can build HotSpot on old systems.
@@ -2639,8 +2700,9 @@
 #define MADV_HUGEPAGE 14
 #endif
 
-bool os::pd_commit_memory(char* addr, size_t size, size_t alignment_hint,
-                       bool exec) {
+int os::Linux::commit_memory_impl(char* addr, size_t size,
+                                  size_t alignment_hint, bool exec) {
+  int err;
   if (UseHugeTLBFS && alignment_hint > (size_t)vm_page_size()) {
     int prot = exec ? PROT_READ|PROT_WRITE|PROT_EXEC : PROT_READ|PROT_WRITE;
     uintptr_t res =
@@ -2651,16 +2713,46 @@
       if (UseNUMAInterleaving) {
         numa_make_global(addr, size);
       }
-      return true;
+      return 0;
+    }
+
+    err = errno;  // save errno from mmap() call above
+
+    if (!recoverable_mmap_error(err)) {
+      // However, it is not clear that this loss of our reserved mapping
+      // happens with large pages on Linux or that we cannot recover
+      // from the loss. For now, we just issue a warning and we don't
+      // call vm_exit_out_of_memory(). This issue is being tracked by
+      // JBS-8007074.
+      warn_fail_commit_memory(addr, size, alignment_hint, exec, err);
+//    vm_exit_out_of_memory(size, OOM_MMAP_ERROR,
+//                          "committing reserved memory.");
     }
     // Fall through and try to use small pages
   }
 
-  if (commit_memory(addr, size, exec)) {
+  err = os::Linux::commit_memory_impl(addr, size, exec);
+  if (err == 0) {
     realign_memory(addr, size, alignment_hint);
-    return true;
-  }
-  return false;
+  }
+  return err;
+}
+
+bool os::pd_commit_memory(char* addr, size_t size, size_t alignment_hint,
+                          bool exec) {
+  return os::Linux::commit_memory_impl(addr, size, alignment_hint, exec) == 0;
+}
+
+void os::pd_commit_memory_or_exit(char* addr, size_t size,
+                                  size_t alignment_hint, bool exec,
+                                  const char* mesg) {
+  assert(mesg != NULL, "mesg must be specified");
+  int err = os::Linux::commit_memory_impl(addr, size, alignment_hint, exec);
+  if (err != 0) {
+    // the caller wants all commit errors to exit with the specified mesg:
+    warn_fail_commit_memory(addr, size, alignment_hint, exec, err);
+    vm_exit_out_of_memory(size, OOM_MMAP_ERROR, mesg);
+  }
 }
 
 void os::pd_realign_memory(char *addr, size_t bytes, size_t alignment_hint) {
@@ -2678,7 +2770,7 @@
   // small pages on top of the SHM segment. This method always works for small pages, so we
   // allow that in any case.
   if (alignment_hint <= (size_t)os::vm_page_size() || !UseSHM) {
-    commit_memory(addr, bytes, alignment_hint, false);
+    commit_memory(addr, bytes, alignment_hint, !ExecMem);
   }
 }
 
@@ -2931,7 +3023,7 @@
       ::munmap((void*)stack_extent, (uintptr_t)addr - stack_extent);
   }
 
-  return os::commit_memory(addr, size);
+  return os::commit_memory(addr, size, !ExecMem);
 }
 
 // If this is a growable mapping, remove the guard pages entirely by
@@ -3053,7 +3145,7 @@
                   MAP_ANONYMOUS|MAP_PRIVATE|MAP_HUGETLB,
                   -1, 0);
 
-  if (p != (void *) -1) {
+  if (p != MAP_FAILED) {
     // We don't know if this really is a huge page or not.
     FILE *fp = fopen("/proc/self/maps", "r");
     if (fp) {
@@ -3271,22 +3363,21 @@
   }
 
   // The memory is committed
-  address pc = CALLER_PC;
-  MemTracker::record_virtual_memory_reserve((address)addr, bytes, pc);
-  MemTracker::record_virtual_memory_commit((address)addr, bytes, pc);
+  MemTracker::record_virtual_memory_reserve_and_commit((address)addr, bytes, mtNone, CALLER_PC);
 
   return addr;
 }
 
 bool os::release_memory_special(char* base, size_t bytes) {
+  MemTracker::Tracker tkr = MemTracker::get_virtual_memory_release_tracker();
   // detaching the SHM segment will also delete it, see reserve_memory_special()
   int rslt = shmdt(base);
   if (rslt == 0) {
-    MemTracker::record_virtual_memory_uncommit((address)base, bytes);
-    MemTracker::record_virtual_memory_release((address)base, bytes);
+    tkr.record((address)base, bytes);
     return true;
   } else {
-   return false;
+    tkr.discard();
+    return false;
   }
 }
 
@@ -4393,7 +4484,7 @@
 
   if (!UseMembar) {
     address mem_serialize_page = (address) ::mmap(NULL, Linux::page_size(), PROT_READ | PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
-    guarantee( mem_serialize_page != NULL, "mmap Failed for memory serialize page");
+    guarantee( mem_serialize_page != MAP_FAILED, "mmap Failed for memory serialize page");
     os::set_memory_serialize_page( mem_serialize_page );
 
 #ifndef PRODUCT
--- a/src/os/linux/vm/os_linux.hpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/os/linux/vm/os_linux.hpp	Wed Jun 19 18:13:52 2013 +0200
@@ -76,6 +76,10 @@
   static julong physical_memory() { return _physical_memory; }
   static void initialize_system_info();
 
+  static int commit_memory_impl(char* addr, size_t bytes, bool exec);
+  static int commit_memory_impl(char* addr, size_t bytes,
+                                size_t alignment_hint, bool exec);
+
   static void set_glibc_version(const char *s)      { _glibc_version = s; }
   static void set_libpthread_version(const char *s) { _libpthread_version = s; }
 
--- a/src/os/linux/vm/perfMemory_linux.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/os/linux/vm/perfMemory_linux.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -60,7 +60,7 @@
   }
 
   // commit memory
-  if (!os::commit_memory(mapAddress, size)) {
+  if (!os::commit_memory(mapAddress, size, !ExecMem)) {
     if (PrintMiscellaneous && Verbose) {
       warning("Could not commit PerfData memory\n");
     }
@@ -120,7 +120,7 @@
       addr += result;
     }
 
-    RESTARTABLE(::close(fd), result);
+    result = ::close(fd);
     if (PrintMiscellaneous && Verbose) {
       if (result == OS_ERR) {
         warning("Could not close %s: %s\n", destfile, strerror(errno));
@@ -632,7 +632,7 @@
     if (PrintMiscellaneous && Verbose) {
       warning("could not set shared memory file size: %s\n", strerror(errno));
     }
-    RESTARTABLE(::close(fd), result);
+    ::close(fd);
     return -1;
   }
 
@@ -656,7 +656,7 @@
   if (result != -1) {
     return fd;
   } else {
-    RESTARTABLE(::close(fd), result);
+    ::close(fd);
     return -1;
   }
 }
@@ -734,9 +734,7 @@
 
   mapAddress = (char*)::mmap((char*)0, size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
 
-  // attempt to close the file - restart it if it was interrupted,
-  // but ignore other failures
-  RESTARTABLE(::close(fd), result);
+  result = ::close(fd);
   assert(result != OS_ERR, "could not close file");
 
   if (mapAddress == MAP_FAILED) {
@@ -755,8 +753,7 @@
   (void)::memset((void*) mapAddress, 0, size);
 
   // it does not go through os api, the operation has to record from here
-  MemTracker::record_virtual_memory_reserve((address)mapAddress, size, CURRENT_PC);
-  MemTracker::record_virtual_memory_type((address)mapAddress, mtInternal);
+  MemTracker::record_virtual_memory_reserve((address)mapAddress, size, mtInternal, CURRENT_PC);
 
   return mapAddress;
 }
@@ -907,9 +904,7 @@
 
   mapAddress = (char*)::mmap((char*)0, size, mmap_prot, MAP_SHARED, fd, 0);
 
-  // attempt to close the file - restart if it gets interrupted,
-  // but ignore other failures
-  RESTARTABLE(::close(fd), result);
+  result = ::close(fd);
   assert(result != OS_ERR, "could not close file");
 
   if (mapAddress == MAP_FAILED) {
@@ -921,8 +916,7 @@
   }
 
   // it does not go through os api, the operation has to record from here
-  MemTracker::record_virtual_memory_reserve((address)mapAddress, size, CURRENT_PC);
-  MemTracker::record_virtual_memory_type((address)mapAddress, mtInternal);
+  MemTracker::record_virtual_memory_reserve((address)mapAddress, size, mtInternal, CURRENT_PC);
 
   *addr = mapAddress;
   *sizep = size;
--- a/src/os/solaris/dtrace/jvm_dtrace.c	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/os/solaris/dtrace/jvm_dtrace.c	Wed Jun 19 18:13:52 2013 +0200
@@ -122,9 +122,7 @@
 }
 
 static int file_close(int fd) {
-    int ret;
-    RESTARTABLE(close(fd), ret);
-    return ret;
+    return close(fd);
 }
 
 static int file_read(int fd, char* buf, int len) {
--- a/src/os/solaris/vm/attachListener_solaris.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/os/solaris/vm/attachListener_solaris.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -392,7 +392,7 @@
     return -1;
   }
   assert(fd >= 0, "bad file descriptor");
-  RESTARTABLE(::close(fd), res);
+  ::close(fd);
 
   // attach the door descriptor to the file
   if ((res = ::fattach(dd, initial_path)) == -1) {
@@ -410,7 +410,7 @@
   // rename file so that clients can attach
   if (dd >= 0) {
     if (::rename(initial_path, door_path) == -1) {
-        RESTARTABLE(::close(dd), res);
+        ::close(dd);
         ::fdetach(initial_path);
         dd = -1;
     }
@@ -549,7 +549,7 @@
     }
 
     // close socket and we're done
-    RESTARTABLE(::close(this->socket()), rc);
+    ::close(this->socket());
 
     // were we externally suspended while we were waiting?
     thread->check_and_wait_while_suspended();
--- a/src/os/solaris/vm/os_solaris.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/os/solaris/vm/os_solaris.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -2784,7 +2784,42 @@
   return page_size;
 }
 
-bool os::pd_commit_memory(char* addr, size_t bytes, bool exec) {
+static bool recoverable_mmap_error(int err) {
+  // See if the error is one we can let the caller handle. This
+  // list of errno values comes from the Solaris mmap(2) man page.
+  switch (err) {
+  case EBADF:
+  case EINVAL:
+  case ENOTSUP:
+    // let the caller deal with these errors
+    return true;
+
+  default:
+    // Any remaining errors on this OS can cause our reserved mapping
+    // to be lost. That can cause confusion where different data
+    // structures think they have the same memory mapped. The worst
+    // scenario is if both the VM and a library think they have the
+    // same memory mapped.
+    return false;
+  }
+}
+
+static void warn_fail_commit_memory(char* addr, size_t bytes, bool exec,
+                                    int err) {
+  warning("INFO: os::commit_memory(" PTR_FORMAT ", " SIZE_FORMAT
+          ", %d) failed; error='%s' (errno=%d)", addr, bytes, exec,
+          strerror(err), err);
+}
+
+static void warn_fail_commit_memory(char* addr, size_t bytes,
+                                    size_t alignment_hint, bool exec,
+                                    int err) {
+  warning("INFO: os::commit_memory(" PTR_FORMAT ", " SIZE_FORMAT
+          ", " SIZE_FORMAT ", %d) failed; error='%s' (errno=%d)", addr, bytes,
+          alignment_hint, exec, strerror(err), err);
+}
+
+int os::Solaris::commit_memory_impl(char* addr, size_t bytes, bool exec) {
   int prot = exec ? PROT_READ|PROT_WRITE|PROT_EXEC : PROT_READ|PROT_WRITE;
   size_t size = bytes;
   char *res = Solaris::mmap_chunk(addr, size, MAP_PRIVATE|MAP_FIXED, prot);
@@ -2792,14 +2827,38 @@
     if (UseNUMAInterleaving) {
       numa_make_global(addr, bytes);
     }
-    return true;
-  }
-  return false;
-}
-
-bool os::pd_commit_memory(char* addr, size_t bytes, size_t alignment_hint,
-                       bool exec) {
-  if (commit_memory(addr, bytes, exec)) {
+    return 0;
+  }
+
+  int err = errno;  // save errno from mmap() call in mmap_chunk()
+
+  if (!recoverable_mmap_error(err)) {
+    warn_fail_commit_memory(addr, bytes, exec, err);
+    vm_exit_out_of_memory(bytes, OOM_MMAP_ERROR, "committing reserved memory.");
+  }
+
+  return err;
+}
+
+bool os::pd_commit_memory(char* addr, size_t bytes, bool exec) {
+  return Solaris::commit_memory_impl(addr, bytes, exec) == 0;
+}
+
+void os::pd_commit_memory_or_exit(char* addr, size_t bytes, bool exec,
+                                  const char* mesg) {
+  assert(mesg != NULL, "mesg must be specified");
+  int err = os::Solaris::commit_memory_impl(addr, bytes, exec);
+  if (err != 0) {
+    // the caller wants all commit errors to exit with the specified mesg:
+    warn_fail_commit_memory(addr, bytes, exec, err);
+    vm_exit_out_of_memory(bytes, OOM_MMAP_ERROR, mesg);
+  }
+}
+
+int os::Solaris::commit_memory_impl(char* addr, size_t bytes,
+                                    size_t alignment_hint, bool exec) {
+  int err = Solaris::commit_memory_impl(addr, bytes, exec);
+  if (err == 0) {
     if (UseMPSS && alignment_hint > (size_t)vm_page_size()) {
       // If the large page size has been set and the VM
       // is using large pages, use the large page size
@@ -2821,9 +2880,25 @@
       // Since this is a hint, ignore any failures.
       (void)Solaris::set_mpss_range(addr, bytes, page_size);
     }
-    return true;
-  }
-  return false;
+  }
+  return err;
+}
+
+bool os::pd_commit_memory(char* addr, size_t bytes, size_t alignment_hint,
+                          bool exec) {
+  return Solaris::commit_memory_impl(addr, bytes, alignment_hint, exec) == 0;
+}
+
+void os::pd_commit_memory_or_exit(char* addr, size_t bytes,
+                                  size_t alignment_hint, bool exec,
+                                  const char* mesg) {
+  assert(mesg != NULL, "mesg must be specified");
+  int err = os::Solaris::commit_memory_impl(addr, bytes, alignment_hint, exec);
+  if (err != 0) {
+    // the caller wants all commit errors to exit with the specified mesg:
+    warn_fail_commit_memory(addr, bytes, alignment_hint, exec, err);
+    vm_exit_out_of_memory(bytes, OOM_MMAP_ERROR, mesg);
+  }
 }
 
 // Uncommit the pages in a specified region.
@@ -2835,7 +2910,7 @@
 }
 
 bool os::pd_create_stack_guard_pages(char* addr, size_t size) {
-  return os::commit_memory(addr, size);
+  return os::commit_memory(addr, size, !ExecMem);
 }
 
 bool os::remove_stack_guard_pages(char* addr, size_t size) {
@@ -3457,22 +3532,21 @@
   }
 
   // The memory is committed
-  address pc = CALLER_PC;
-  MemTracker::record_virtual_memory_reserve((address)retAddr, size, pc);
-  MemTracker::record_virtual_memory_commit((address)retAddr, size, pc);
+  MemTracker::record_virtual_memory_reserve_and_commit((address)retAddr, size, mtNone, CURRENT_PC);
 
   return retAddr;
 }
 
 bool os::release_memory_special(char* base, size_t bytes) {
+  MemTracker::Tracker tkr = MemTracker::get_virtual_memory_release_tracker();
   // detaching the SHM segment will also delete it, see reserve_memory_special()
   int rslt = shmdt(base);
   if (rslt == 0) {
-    MemTracker::record_virtual_memory_uncommit((address)base, bytes);
-    MemTracker::record_virtual_memory_release((address)base, bytes);
+    tkr.record((address)base, bytes);
     return true;
   } else {
-   return false;
+    tkr.discard();
+    return false;
   }
 }
 
@@ -6604,11 +6678,11 @@
 }
 
 int os::close(int fd) {
-  RESTARTABLE_RETURN_INT(::close(fd));
+  return ::close(fd);
 }
 
 int os::socket_close(int fd) {
-  RESTARTABLE_RETURN_INT(::close(fd));
+  return ::close(fd);
 }
 
 int os::recv(int fd, char* buf, size_t nBytes, uint flags) {
--- a/src/os/solaris/vm/os_solaris.hpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/os/solaris/vm/os_solaris.hpp	Wed Jun 19 18:13:52 2013 +0200
@@ -168,6 +168,9 @@
   static int _dev_zero_fd;
   static int get_dev_zero_fd() { return _dev_zero_fd; }
   static void set_dev_zero_fd(int fd) { _dev_zero_fd = fd; }
+  static int commit_memory_impl(char* addr, size_t bytes, bool exec);
+  static int commit_memory_impl(char* addr, size_t bytes,
+                                size_t alignment_hint, bool exec);
   static char* mmap_chunk(char *addr, size_t size, int flags, int prot);
   static char* anon_mmap(char* requested_addr, size_t bytes, size_t alignment_hint, bool fixed);
   static bool mpss_sanity_check(bool warn, size_t * page_size);
--- a/src/os/solaris/vm/perfMemory_solaris.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/os/solaris/vm/perfMemory_solaris.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -62,7 +62,7 @@
   }
 
   // commit memory
-  if (!os::commit_memory(mapAddress, size)) {
+  if (!os::commit_memory(mapAddress, size, !ExecMem)) {
     if (PrintMiscellaneous && Verbose) {
       warning("Could not commit PerfData memory\n");
     }
@@ -122,7 +122,7 @@
       addr += result;
     }
 
-    RESTARTABLE(::close(fd), result);
+    result = ::close(fd);
     if (PrintMiscellaneous && Verbose) {
       if (result == OS_ERR) {
         warning("Could not close %s: %s\n", destfile, strerror(errno));
@@ -437,7 +437,7 @@
       addr+=result;
     }
 
-    RESTARTABLE(::close(fd), result);
+    ::close(fd);
 
     // get the user name for the effective user id of the process
     char* user_name = get_user_name(psinfo.pr_euid);
@@ -669,7 +669,7 @@
     if (PrintMiscellaneous && Verbose) {
       warning("could not set shared memory file size: %s\n", strerror(errno));
     }
-    RESTARTABLE(::close(fd), result);
+    ::close(fd);
     return -1;
   }
 
@@ -749,9 +749,7 @@
 
   mapAddress = (char*)::mmap((char*)0, size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
 
-  // attempt to close the file - restart it if it was interrupted,
-  // but ignore other failures
-  RESTARTABLE(::close(fd), result);
+  result = ::close(fd);
   assert(result != OS_ERR, "could not close file");
 
   if (mapAddress == MAP_FAILED) {
@@ -770,8 +768,7 @@
   (void)::memset((void*) mapAddress, 0, size);
 
   // it does not go through os api, the operation has to record from here
-  MemTracker::record_virtual_memory_reserve((address)mapAddress, size, CURRENT_PC);
-  MemTracker::record_virtual_memory_type((address)mapAddress, mtInternal);
+  MemTracker::record_virtual_memory_reserve((address)mapAddress, size, mtInternal, CURRENT_PC);
 
   return mapAddress;
 }
@@ -922,9 +919,7 @@
 
   mapAddress = (char*)::mmap((char*)0, size, mmap_prot, MAP_SHARED, fd, 0);
 
-  // attempt to close the file - restart if it gets interrupted,
-  // but ignore other failures
-  RESTARTABLE(::close(fd), result);
+  result = ::close(fd);
   assert(result != OS_ERR, "could not close file");
 
   if (mapAddress == MAP_FAILED) {
@@ -936,8 +931,7 @@
   }
 
   // it does not go through os api, the operation has to record from here
-  MemTracker::record_virtual_memory_reserve((address)mapAddress, size, CURRENT_PC);
-  MemTracker::record_virtual_memory_type((address)mapAddress, mtInternal);
+  MemTracker::record_virtual_memory_reserve((address)mapAddress, size, mtInternal, CURRENT_PC);
 
   *addr = mapAddress;
   *sizep = size;
--- a/src/os/windows/vm/os_windows.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/os/windows/vm/os_windows.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -2524,7 +2524,7 @@
                   addr = (address)((uintptr_t)addr &
                          (~((uintptr_t)os::vm_page_size() - (uintptr_t)1)));
                   os::commit_memory((char *)addr, thread->stack_base() - addr,
-                                    false );
+                                    !ExecMem);
                   return EXCEPTION_CONTINUE_EXECUTION;
           }
           else
@@ -2875,7 +2875,7 @@
                                 PAGE_READWRITE);
   // If reservation failed, return NULL
   if (p_buf == NULL) return NULL;
-  MemTracker::record_virtual_memory_reserve((address)p_buf, size_of_reserve, CALLER_PC);
+  MemTracker::record_virtual_memory_reserve((address)p_buf, size_of_reserve, mtNone, CALLER_PC);
   os::release_memory(p_buf, bytes + chunk_size);
 
   // we still need to round up to a page boundary (in case we are using large pages)
@@ -2941,7 +2941,7 @@
         // need to create a dummy 'reserve' record to match
         // the release.
         MemTracker::record_virtual_memory_reserve((address)p_buf,
-          bytes_to_release, CALLER_PC);
+          bytes_to_release, mtNone, CALLER_PC);
         os::release_memory(p_buf, bytes_to_release);
       }
 #ifdef ASSERT
@@ -2961,9 +2961,10 @@
   // Although the memory is allocated individually, it is returned as one.
   // NMT records it as one block.
   address pc = CALLER_PC;
-  MemTracker::record_virtual_memory_reserve((address)p_buf, bytes, pc);
   if ((flags & MEM_COMMIT) != 0) {
-    MemTracker::record_virtual_memory_commit((address)p_buf, bytes, pc);
+    MemTracker::record_virtual_memory_reserve_and_commit((address)p_buf, bytes, mtNone, pc);
+  } else {
+    MemTracker::record_virtual_memory_reserve((address)p_buf, bytes, mtNone, pc);
   }
 
   // made it this far, success
@@ -3154,8 +3155,7 @@
     char * res = (char *)VirtualAlloc(NULL, bytes, flag, prot);
     if (res != NULL) {
       address pc = CALLER_PC;
-      MemTracker::record_virtual_memory_reserve((address)res, bytes, pc);
-      MemTracker::record_virtual_memory_commit((address)res, bytes, pc);
+      MemTracker::record_virtual_memory_reserve_and_commit((address)res, bytes, mtNone, pc);
     }
 
     return res;
@@ -3164,14 +3164,21 @@
 
 bool os::release_memory_special(char* base, size_t bytes) {
   assert(base != NULL, "Sanity check");
-  // Memory allocated via reserve_memory_special() is committed
-  MemTracker::record_virtual_memory_uncommit((address)base, bytes);
   return release_memory(base, bytes);
 }
 
 void os::print_statistics() {
 }
 
+static void warn_fail_commit_memory(char* addr, size_t bytes, bool exec) {
+  int err = os::get_last_error();
+  char buf[256];
+  size_t buf_len = os::lasterror(buf, sizeof(buf));
+  warning("INFO: os::commit_memory(" PTR_FORMAT ", " SIZE_FORMAT
+          ", %d) failed; error='%s' (DOS error/errno=%d)", addr, bytes,
+          exec, buf_len != 0 ? buf : "<no_error_string>", err);
+}
+
 bool os::pd_commit_memory(char* addr, size_t bytes, bool exec) {
   if (bytes == 0) {
     // Don't bother the OS with noops.
@@ -3186,11 +3193,17 @@
   // is always within a reserve covered by a single VirtualAlloc
   // in that case we can just do a single commit for the requested size
   if (!UseNUMAInterleaving) {
-    if (VirtualAlloc(addr, bytes, MEM_COMMIT, PAGE_READWRITE) == NULL) return false;
+    if (VirtualAlloc(addr, bytes, MEM_COMMIT, PAGE_READWRITE) == NULL) {
+      NOT_PRODUCT(warn_fail_commit_memory(addr, bytes, exec);)
+      return false;
+    }
     if (exec) {
       DWORD oldprot;
       // Windows doc says to use VirtualProtect to get execute permissions
-      if (!VirtualProtect(addr, bytes, PAGE_EXECUTE_READWRITE, &oldprot)) return false;
+      if (!VirtualProtect(addr, bytes, PAGE_EXECUTE_READWRITE, &oldprot)) {
+        NOT_PRODUCT(warn_fail_commit_memory(addr, bytes, exec);)
+        return false;
+      }
     }
     return true;
   } else {
@@ -3205,12 +3218,20 @@
       MEMORY_BASIC_INFORMATION alloc_info;
       VirtualQuery(next_alloc_addr, &alloc_info, sizeof(alloc_info));
       size_t bytes_to_rq = MIN2(bytes_remaining, (size_t)alloc_info.RegionSize);
-      if (VirtualAlloc(next_alloc_addr, bytes_to_rq, MEM_COMMIT, PAGE_READWRITE) == NULL)
+      if (VirtualAlloc(next_alloc_addr, bytes_to_rq, MEM_COMMIT,
+                       PAGE_READWRITE) == NULL) {
+        NOT_PRODUCT(warn_fail_commit_memory(next_alloc_addr, bytes_to_rq,
+                                            exec);)
         return false;
+      }
       if (exec) {
         DWORD oldprot;
-        if (!VirtualProtect(next_alloc_addr, bytes_to_rq, PAGE_EXECUTE_READWRITE, &oldprot))
+        if (!VirtualProtect(next_alloc_addr, bytes_to_rq,
+                            PAGE_EXECUTE_READWRITE, &oldprot)) {
+          NOT_PRODUCT(warn_fail_commit_memory(next_alloc_addr, bytes_to_rq,
+                                              exec);)
           return false;
+        }
       }
       bytes_remaining -= bytes_to_rq;
       next_alloc_addr += bytes_to_rq;
@@ -3222,7 +3243,24 @@
 
 bool os::pd_commit_memory(char* addr, size_t size, size_t alignment_hint,
                        bool exec) {
-  return commit_memory(addr, size, exec);
+  // alignment_hint is ignored on this OS
+  return pd_commit_memory(addr, size, exec);
+}
+
+void os::pd_commit_memory_or_exit(char* addr, size_t size, bool exec,
+                                  const char* mesg) {
+  assert(mesg != NULL, "mesg must be specified");
+  if (!pd_commit_memory(addr, size, exec)) {
+    warn_fail_commit_memory(addr, size, exec);
+    vm_exit_out_of_memory(size, OOM_MMAP_ERROR, mesg);
+  }
+}
+
+void os::pd_commit_memory_or_exit(char* addr, size_t size,
+                                  size_t alignment_hint, bool exec,
+                                  const char* mesg) {
+  // alignment_hint is ignored on this OS
+  pd_commit_memory_or_exit(addr, size, exec, mesg);
 }
 
 bool os::pd_uncommit_memory(char* addr, size_t bytes) {
@@ -3240,7 +3278,7 @@
 }
 
 bool os::pd_create_stack_guard_pages(char* addr, size_t size) {
-  return os::commit_memory(addr, size);
+  return os::commit_memory(addr, size, !ExecMem);
 }
 
 bool os::remove_stack_guard_pages(char* addr, size_t size) {
@@ -3264,8 +3302,9 @@
 
   // Strange enough, but on Win32 one can change protection only for committed
   // memory, not a big deal anyway, as bytes less or equal than 64K
-  if (!is_committed && !commit_memory(addr, bytes, prot == MEM_PROT_RWX)) {
-    fatal("cannot commit protection page");
+  if (!is_committed) {
+    commit_memory_or_exit(addr, bytes, prot == MEM_PROT_RWX,
+                          "cannot commit protection page");
   }
   // One cannot use os::guard_memory() here, as on Win32 guard page
   // have different (one-shot) semantics, from MSDN on PAGE_GUARD:
--- a/src/os/windows/vm/perfMemory_windows.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/os/windows/vm/perfMemory_windows.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -58,7 +58,7 @@
   }
 
   // commit memory
-  if (!os::commit_memory(mapAddress, size)) {
+  if (!os::commit_memory(mapAddress, size, !ExecMem)) {
     if (PrintMiscellaneous && Verbose) {
       warning("Could not commit PerfData memory\n");
     }
@@ -1498,8 +1498,7 @@
   (void)memset(mapAddress, '\0', size);
 
   // it does not go through os api, the operation has to record from here
-  MemTracker::record_virtual_memory_reserve((address)mapAddress, size, CURRENT_PC);
-  MemTracker::record_virtual_memory_type((address)mapAddress, mtInternal);
+  MemTracker::record_virtual_memory_reserve((address)mapAddress, size, mtInternal, CURRENT_PC);
 
   return (char*) mapAddress;
 }
@@ -1681,8 +1680,7 @@
   }
 
   // it does not go through os api, the operation has to record from here
-  MemTracker::record_virtual_memory_reserve((address)mapAddress, size, CURRENT_PC);
-  MemTracker::record_virtual_memory_type((address)mapAddress, mtInternal);
+  MemTracker::record_virtual_memory_reserve((address)mapAddress, size, mtInternal, CURRENT_PC);
 
 
   *addrp = (char*)mapAddress;
@@ -1836,9 +1834,10 @@
     return;
   }
 
+  MemTracker::Tracker tkr = MemTracker::get_virtual_memory_release_tracker();
   remove_file_mapping(addr);
   // it does not go through os api, the operation has to record from here
-  MemTracker::record_virtual_memory_release((address)addr, bytes);
+  tkr.record((address)addr, bytes);
 }
 
 char* PerfMemory::backing_store_filename() {
--- a/src/share/vm/c1/c1_IR.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/c1/c1_IR.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -506,7 +506,7 @@
   _loop_map(0, 0),          // initialized later with correct size
   _compilation(c)
 {
-  TRACE_LINEAR_SCAN(2, "***** computing linear-scan block order");
+  TRACE_LINEAR_SCAN(2, tty->print_cr("***** computing linear-scan block order"));
 
   init_visited();
   count_edges(start_block, NULL);
@@ -683,7 +683,7 @@
 }
 
 void ComputeLinearScanOrder::assign_loop_depth(BlockBegin* start_block) {
-  TRACE_LINEAR_SCAN(3, "----- computing loop-depth and weight");
+  TRACE_LINEAR_SCAN(3, tty->print_cr("----- computing loop-depth and weight"));
   init_visited();
 
   assert(_work_list.is_empty(), "work list must be empty before processing");
@@ -868,7 +868,7 @@
 }
 
 void ComputeLinearScanOrder::compute_order(BlockBegin* start_block) {
-  TRACE_LINEAR_SCAN(3, "----- computing final block order");
+  TRACE_LINEAR_SCAN(3, tty->print_cr("----- computing final block order"));
 
   // the start block is always the first block in the linear scan order
   _linear_scan_order = new BlockList(_num_blocks);
--- a/src/share/vm/ci/ciUtilities.hpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/ci/ciUtilities.hpp	Wed Jun 19 18:13:52 2013 +0200
@@ -96,7 +96,7 @@
     CLEAR_PENDING_EXCEPTION;                     \
     return (result);                             \
   }                                              \
-  (0
+  (void)(0
 
 #define KILL_COMPILE_ON_ANY                      \
   THREAD);                                       \
@@ -104,7 +104,7 @@
     fatal("unhandled ci exception");             \
     CLEAR_PENDING_EXCEPTION;                     \
   }                                              \
-(0
+(void)(0
 
 
 inline const char* bool_to_str(bool b) {
--- a/src/share/vm/classfile/genericSignatures.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/classfile/genericSignatures.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -124,7 +124,7 @@
       fatal(STREAM->parse_error());      \
     }                                   \
     return NULL;                        \
-  } 0
+  } (void)0
 
 #define READ() STREAM->read(); CHECK_FOR_PARSE_ERROR()
 #define PEEK() STREAM->peek(); CHECK_FOR_PARSE_ERROR()
@@ -133,7 +133,7 @@
 #define EXPECTED(c, ch) STREAM->assert_char(c, ch); CHECK_FOR_PARSE_ERROR()
 #define EXPECT_END() STREAM->expect_end(); CHECK_FOR_PARSE_ERROR()
 
-#define CHECK_STREAM STREAM); CHECK_FOR_PARSE_ERROR(); (0
+#define CHECK_STREAM STREAM); CHECK_FOR_PARSE_ERROR(); ((void)0
 
 #ifndef PRODUCT
 void Identifier::print_on(outputStream* str) const {
--- a/src/share/vm/classfile/verifier.hpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/classfile/verifier.hpp	Wed Jun 19 18:13:52 2013 +0200
@@ -86,9 +86,9 @@
 // These macros are used similarly to CHECK macros but also check
 // the status of the verifier and return if that has an error.
 #define CHECK_VERIFY(verifier) \
-  CHECK); if ((verifier)->has_error()) return; (0
+  CHECK); if ((verifier)->has_error()) return; ((void)0
 #define CHECK_VERIFY_(verifier, result) \
-  CHECK_(result)); if ((verifier)->has_error()) return (result); (0
+  CHECK_(result)); if ((verifier)->has_error()) return (result); ((void)0
 
 class TypeOrigin VALUE_OBJ_CLASS_SPEC {
  private:
--- a/src/share/vm/code/dependencies.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/code/dependencies.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -989,7 +989,7 @@
   assert(changes.involves_context(context_type), "irrelevant dependency");
   Klass* new_type = changes.new_type();
 
-  count_find_witness_calls();
+  (void)count_find_witness_calls();
   NOT_PRODUCT(deps_find_witness_singles++);
 
   // Current thread must be in VM (not native mode, as in CI):
--- a/src/share/vm/code/nmethod.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/code/nmethod.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -2615,7 +2615,8 @@
                       relocation_begin()-1+ip[1]);
       for (; ip < index_end; ip++)
         tty->print_cr("  (%d ?)", ip[0]);
-      tty->print_cr("          @" INTPTR_FORMAT ": index_size=%d", ip, *ip++);
+      tty->print_cr("          @" INTPTR_FORMAT ": index_size=%d", ip, *ip);
+      ip++;
       tty->print_cr("reloc_end @" INTPTR_FORMAT ":", ip);
     }
   }
--- a/src/share/vm/gc_implementation/parallelScavenge/cardTableExtension.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/gc_implementation/parallelScavenge/cardTableExtension.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -565,11 +565,9 @@
     if(new_start_aligned < new_end_for_commit) {
       MemRegion new_committed =
         MemRegion(new_start_aligned, new_end_for_commit);
-      if (!os::commit_memory((char*)new_committed.start(),
-                             new_committed.byte_size())) {
-        vm_exit_out_of_memory(new_committed.byte_size(), OOM_MMAP_ERROR,
-                              "card table expansion");
-      }
+      os::commit_memory_or_exit((char*)new_committed.start(),
+                                new_committed.byte_size(), !ExecMem,
+                                "card table expansion");
     }
     result = true;
   } else if (new_start_aligned > cur_committed.start()) {
--- a/src/share/vm/gc_implementation/parallelScavenge/psVirtualspace.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/gc_implementation/parallelScavenge/psVirtualspace.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -101,7 +101,8 @@
   }
 
   char* const base_addr = committed_high_addr();
-  bool result = special() || os::commit_memory(base_addr, bytes, alignment());
+  bool result = special() ||
+         os::commit_memory(base_addr, bytes, alignment(), !ExecMem);
   if (result) {
     _committed_high_addr += bytes;
   }
@@ -154,7 +155,7 @@
   if (tmp_bytes > 0) {
     char* const commit_base = committed_high_addr();
     if (other_space->special() ||
-        os::commit_memory(commit_base, tmp_bytes, alignment())) {
+        os::commit_memory(commit_base, tmp_bytes, alignment(), !ExecMem)) {
       // Reduce the reserved region in the other space.
       other_space->set_reserved(other_space->reserved_low_addr() + tmp_bytes,
                                 other_space->reserved_high_addr(),
@@ -269,7 +270,8 @@
   }
 
   char* const base_addr = committed_low_addr() - bytes;
-  bool result = special() || os::commit_memory(base_addr, bytes, alignment());
+  bool result = special() ||
+         os::commit_memory(base_addr, bytes, alignment(), !ExecMem);
   if (result) {
     _committed_low_addr -= bytes;
   }
@@ -322,7 +324,7 @@
   if (tmp_bytes > 0) {
     char* const commit_base = committed_low_addr() - tmp_bytes;
     if (other_space->special() ||
-        os::commit_memory(commit_base, tmp_bytes, alignment())) {
+        os::commit_memory(commit_base, tmp_bytes, alignment(), !ExecMem)) {
       // Reduce the reserved region in the other space.
       other_space->set_reserved(other_space->reserved_low_addr(),
                                 other_space->reserved_high_addr() - tmp_bytes,
--- a/src/share/vm/memory/allocation.hpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/memory/allocation.hpp	Wed Jun 19 18:13:52 2013 +0200
@@ -635,8 +635,15 @@
 #define NEW_RESOURCE_ARRAY_IN_THREAD(thread, type, size)\
   (type*) resource_allocate_bytes(thread, (size) * sizeof(type))
 
+#define NEW_RESOURCE_ARRAY_IN_THREAD_RETURN_NULL(thread, type, size)\
+  (type*) resource_allocate_bytes(thread, (size) * sizeof(type), AllocFailStrategy::RETURN_NULL)
+
 #define REALLOC_RESOURCE_ARRAY(type, old, old_size, new_size)\
-  (type*) resource_reallocate_bytes((char*)(old), (old_size) * sizeof(type), (new_size) * sizeof(type) )
+  (type*) resource_reallocate_bytes((char*)(old), (old_size) * sizeof(type), (new_size) * sizeof(type))
+
+#define REALLOC_RESOURCE_ARRAY_RETURN_NULL(type, old, old_size, new_size)\
+  (type*) resource_reallocate_bytes((char*)(old), (old_size) * sizeof(type),\
+                                    (new_size) * sizeof(type), AllocFailStrategy::RETURN_NULL)
 
 #define FREE_RESOURCE_ARRAY(type, old, size)\
   resource_free_bytes((char*)(old), (size) * sizeof(type))
@@ -647,28 +654,40 @@
 #define NEW_RESOURCE_OBJ(type)\
   NEW_RESOURCE_ARRAY(type, 1)
 
+#define NEW_RESOURCE_OBJ_RETURN_NULL(type)\
+  NEW_RESOURCE_ARRAY_RETURN_NULL(type, 1)
+
+#define NEW_C_HEAP_ARRAY3(type, size, memflags, pc, allocfail)\
+  (type*) AllocateHeap(size * sizeof(type), memflags, pc, allocfail)
+
+#define NEW_C_HEAP_ARRAY2(type, size, memflags, pc)\
+  (type*) (AllocateHeap((size) * sizeof(type), memflags, pc))
+
 #define NEW_C_HEAP_ARRAY(type, size, memflags)\
   (type*) (AllocateHeap((size) * sizeof(type), memflags))
 
+#define NEW_C_HEAP_ARRAY2_RETURN_NULL(type, size, memflags, pc)\
+  NEW_C_HEAP_ARRAY3(type, size, memflags, pc, AllocFailStrategy::RETURN_NULL)
+
+#define NEW_C_HEAP_ARRAY_RETURN_NULL(type, size, memflags)\
+  NEW_C_HEAP_ARRAY3(type, size, memflags, (address)0, AllocFailStrategy::RETURN_NULL)
+
 #define REALLOC_C_HEAP_ARRAY(type, old, size, memflags)\
   (type*) (ReallocateHeap((char*)old, (size) * sizeof(type), memflags))
 
+#define REALLOC_C_HEAP_ARRAY_RETURN_NULL(type, old, size, memflags)\
+   (type*) (ReallocateHeap((char*)old, (size) * sizeof(type), memflags, AllocFailStrategy::RETURN_NULL))
+
 #define FREE_C_HEAP_ARRAY(type, old, memflags) \
   FreeHeap((char*)(old), memflags)
 
-#define NEW_C_HEAP_ARRAY2(type, size, memflags, pc)\
-  (type*) (AllocateHeap((size) * sizeof(type), memflags, pc))
-
-#define REALLOC_C_HEAP_ARRAY2(type, old, size, memflags, pc)\
-  (type*) (ReallocateHeap((char*)old, (size) * sizeof(type), memflags, pc))
-
-#define NEW_C_HEAP_ARRAY3(type, size, memflags, pc, allocfail)         \
-  (type*) AllocateHeap(size * sizeof(type), memflags, pc, allocfail)
-
 // allocate type in heap without calling ctor
 #define NEW_C_HEAP_OBJ(type, memflags)\
   NEW_C_HEAP_ARRAY(type, 1, memflags)
 
+#define NEW_C_HEAP_OBJ_RETURN_NULL(type, memflags)\
+  NEW_C_HEAP_ARRAY_RETURN_NULL(type, 1, memflags)
+
 // deallocate obj of type in heap without calling dtor
 #define FREE_C_HEAP_OBJ(objname, memflags)\
   FreeHeap((char*)objname, memflags);
--- a/src/share/vm/memory/allocation.inline.hpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/memory/allocation.inline.hpp	Wed Jun 19 18:13:52 2013 +0200
@@ -146,10 +146,7 @@
     vm_exit_out_of_memory(_size, OOM_MMAP_ERROR, "Allocator (reserve)");
   }
 
-  bool success = os::commit_memory(_addr, _size, false /* executable */);
-  if (!success) {
-    vm_exit_out_of_memory(_size, OOM_MMAP_ERROR, "Allocator (commit)");
-  }
+  os::commit_memory_or_exit(_addr, _size, !ExecMem, "Allocator (commit)");
 
   return (E*)_addr;
 }
--- a/src/share/vm/memory/cardTableModRefBS.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/memory/cardTableModRefBS.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -110,11 +110,8 @@
   jbyte* guard_card = &_byte_map[_guard_index];
   uintptr_t guard_page = align_size_down((uintptr_t)guard_card, _page_size);
   _guard_region = MemRegion((HeapWord*)guard_page, _page_size);
-  if (!os::commit_memory((char*)guard_page, _page_size, _page_size)) {
-    // Do better than this for Merlin
-    vm_exit_out_of_memory(_page_size, OOM_MMAP_ERROR, "card table last card");
-  }
-
+  os::commit_memory_or_exit((char*)guard_page, _page_size, _page_size,
+                            !ExecMem, "card table last card");
   *guard_card = last_card;
 
    _lowest_non_clean =
@@ -312,12 +309,9 @@
         MemRegion(cur_committed.end(), new_end_for_commit);
 
       assert(!new_committed.is_empty(), "Region should not be empty here");
-      if (!os::commit_memory((char*)new_committed.start(),
-                             new_committed.byte_size(), _page_size)) {
-        // Do better than this for Merlin
-        vm_exit_out_of_memory(new_committed.byte_size(), OOM_MMAP_ERROR,
-                "card table expansion");
-      }
+      os::commit_memory_or_exit((char*)new_committed.start(),
+                                new_committed.byte_size(), _page_size,
+                                !ExecMem, "card table expansion");
     // Use new_end_aligned (as opposed to new_end_for_commit) because
     // the cur_committed region may include the guard region.
     } else if (new_end_aligned < cur_committed.end()) {
@@ -418,7 +412,7 @@
   }
   // Touch the last card of the covered region to show that it
   // is committed (or SEGV).
-  debug_only(*byte_for(_covered[ind].last());)
+  debug_only((void) (*byte_for(_covered[ind].last()));)
   debug_only(verify_guard();)
 }
 
--- a/src/share/vm/memory/universe.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/memory/universe.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -529,7 +529,9 @@
   if (vt) vt->initialize_vtable(false, CHECK);
   if (ko->oop_is_instance()) {
     InstanceKlass* ik = (InstanceKlass*)ko;
-    for (KlassHandle s_h(THREAD, ik->subklass()); s_h() != NULL; s_h = (THREAD, s_h()->next_sibling())) {
+    for (KlassHandle s_h(THREAD, ik->subklass());
+         s_h() != NULL;
+         s_h = KlassHandle(THREAD, s_h()->next_sibling())) {
       reinitialize_vtable_of(s_h, CHECK);
     }
   }
--- a/src/share/vm/opto/memnode.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/opto/memnode.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -4384,7 +4384,7 @@
   }
 }
 #else // !ASSERT
-#define verify_memory_slice(m,i,n) (0)  // PRODUCT version is no-op
+#define verify_memory_slice(m,i,n) (void)(0)  // PRODUCT version is no-op
 #endif
 
 
--- a/src/share/vm/prims/forte.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/prims/forte.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -619,7 +619,7 @@
                             void* null_argument_3);
 #pragma weak collector_func_load
 #define collector_func_load(x0,x1,x2,x3,x4,x5,x6) \
-        ( collector_func_load ? collector_func_load(x0,x1,x2,x3,x4,x5,x6),0 : 0 )
+        ( collector_func_load ? collector_func_load(x0,x1,x2,x3,x4,x5,x6),(void)0 : (void)0 )
 #endif // __APPLE__
 #endif // !_WINDOWS
 
--- a/src/share/vm/prims/jvmti.xml	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/prims/jvmti.xml	Wed Jun 19 18:13:52 2013 +0200
@@ -1897,7 +1897,7 @@
 	  </description>
 	</param>
 	<param id="monitor_info_ptr">
-	  <allocbuf outcount="owned_monitor_depth_count_ptr">
+	  <allocbuf outcount="monitor_info_count_ptr">
             <struct>jvmtiMonitorStackDepthInfo</struct>
           </allocbuf>
 	  <description>
--- a/src/share/vm/prims/whitebox.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/prims/whitebox.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -159,7 +159,7 @@
 
 
 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
-  os::commit_memory((char *)(uintptr_t)addr, size);
+  os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
   MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
 WB_END
 
--- a/src/share/vm/runtime/os.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/runtime/os.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -647,10 +647,13 @@
 #ifndef ASSERT
   NOT_PRODUCT(inc_stat_counter(&num_mallocs, 1));
   NOT_PRODUCT(inc_stat_counter(&alloc_bytes, size));
+  MemTracker::Tracker tkr = MemTracker::get_realloc_tracker();
   void* ptr = ::realloc(memblock, size);
   if (ptr != NULL) {
-    MemTracker::record_realloc((address)memblock, (address)ptr, size, memflags,
+    tkr.record((address)memblock, (address)ptr, size, memflags,
      caller == 0 ? CALLER_PC : caller);
+  } else {
+    tkr.discard();
   }
   return ptr;
 #else
@@ -1456,7 +1459,7 @@
 char* os::reserve_memory(size_t bytes, char* addr, size_t alignment_hint) {
   char* result = pd_reserve_memory(bytes, addr, alignment_hint);
   if (result != NULL) {
-    MemTracker::record_virtual_memory_reserve((address)result, bytes, CALLER_PC);
+    MemTracker::record_virtual_memory_reserve((address)result, bytes, mtNone, CALLER_PC);
   }
 
   return result;
@@ -1466,7 +1469,7 @@
    MEMFLAGS flags) {
   char* result = pd_reserve_memory(bytes, addr, alignment_hint);
   if (result != NULL) {
-    MemTracker::record_virtual_memory_reserve((address)result, bytes, CALLER_PC);
+    MemTracker::record_virtual_memory_reserve((address)result, bytes, mtNone, CALLER_PC);
     MemTracker::record_virtual_memory_type((address)result, flags);
   }
 
@@ -1476,7 +1479,7 @@
 char* os::attempt_reserve_memory_at(size_t bytes, char* addr) {
   char* result = pd_attempt_reserve_memory_at(bytes, addr);
   if (result != NULL) {
-    MemTracker::record_virtual_memory_reserve((address)result, bytes, CALLER_PC);
+    MemTracker::record_virtual_memory_reserve((address)result, bytes, mtNone, CALLER_PC);
   }
   return result;
 }
@@ -1503,18 +1506,36 @@
   return res;
 }
 
+void os::commit_memory_or_exit(char* addr, size_t bytes, bool executable,
+                               const char* mesg) {
+  pd_commit_memory_or_exit(addr, bytes, executable, mesg);
+  MemTracker::record_virtual_memory_commit((address)addr, bytes, CALLER_PC);
+}
+
+void os::commit_memory_or_exit(char* addr, size_t size, size_t alignment_hint,
+                               bool executable, const char* mesg) {
+  os::pd_commit_memory_or_exit(addr, size, alignment_hint, executable, mesg);
+  MemTracker::record_virtual_memory_commit((address)addr, size, CALLER_PC);
+}
+
 bool os::uncommit_memory(char* addr, size_t bytes) {
+  MemTracker::Tracker tkr = MemTracker::get_virtual_memory_uncommit_tracker();
   bool res = pd_uncommit_memory(addr, bytes);
   if (res) {
-    MemTracker::record_virtual_memory_uncommit((address)addr, bytes);
+    tkr.record((address)addr, bytes);
+  } else {
+    tkr.discard();
   }
   return res;
 }
 
 bool os::release_memory(char* addr, size_t bytes) {
+  MemTracker::Tracker tkr = MemTracker::get_virtual_memory_release_tracker();
   bool res = pd_release_memory(addr, bytes);
   if (res) {
-    MemTracker::record_virtual_memory_release((address)addr, bytes);
+    tkr.record((address)addr, bytes);
+  } else {
+    tkr.discard();
   }
   return res;
 }
@@ -1525,8 +1546,7 @@
                            bool allow_exec) {
   char* result = pd_map_memory(fd, file_name, file_offset, addr, bytes, read_only, allow_exec);
   if (result != NULL) {
-    MemTracker::record_virtual_memory_reserve((address)result, bytes, CALLER_PC);
-    MemTracker::record_virtual_memory_commit((address)result, bytes, CALLER_PC);
+    MemTracker::record_virtual_memory_reserve_and_commit((address)result, bytes, mtNone, CALLER_PC);
   }
   return result;
 }
@@ -1539,10 +1559,12 @@
 }
 
 bool os::unmap_memory(char *addr, size_t bytes) {
+  MemTracker::Tracker tkr = MemTracker::get_virtual_memory_release_tracker();
   bool result = pd_unmap_memory(addr, bytes);
   if (result) {
-    MemTracker::record_virtual_memory_uncommit((address)addr, bytes);
-    MemTracker::record_virtual_memory_release((address)addr, bytes);
+    tkr.record((address)addr, bytes);
+  } else {
+    tkr.discard();
   }
   return result;
 }
--- a/src/share/vm/runtime/os.hpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/runtime/os.hpp	Wed Jun 19 18:13:52 2013 +0200
@@ -78,6 +78,10 @@
   CriticalPriority = 11      // Critical thread priority
 };
 
+// Executable parameter flag for os::commit_memory() and
+// os::commit_memory_or_exit().
+const bool ExecMem = true;
+
 // Typedef for structured exception handling support
 typedef void (*java_call_t)(JavaValue* value, methodHandle* method, JavaCallArguments* args, Thread* thread);
 
@@ -104,9 +108,16 @@
   static char*  pd_attempt_reserve_memory_at(size_t bytes, char* addr);
   static void   pd_split_reserved_memory(char *base, size_t size,
                                       size_t split, bool realloc);
-  static bool   pd_commit_memory(char* addr, size_t bytes, bool executable = false);
+  static bool   pd_commit_memory(char* addr, size_t bytes, bool executable);
   static bool   pd_commit_memory(char* addr, size_t size, size_t alignment_hint,
-                              bool executable = false);
+                                 bool executable);
+  // Same as pd_commit_memory() that either succeeds or calls
+  // vm_exit_out_of_memory() with the specified mesg.
+  static void   pd_commit_memory_or_exit(char* addr, size_t bytes,
+                                         bool executable, const char* mesg);
+  static void   pd_commit_memory_or_exit(char* addr, size_t size,
+                                         size_t alignment_hint,
+                                         bool executable, const char* mesg);
   static bool   pd_uncommit_memory(char* addr, size_t bytes);
   static bool   pd_release_memory(char* addr, size_t bytes);
 
@@ -261,9 +272,16 @@
   static char*  attempt_reserve_memory_at(size_t bytes, char* addr);
   static void   split_reserved_memory(char *base, size_t size,
                                       size_t split, bool realloc);
-  static bool   commit_memory(char* addr, size_t bytes, bool executable = false);
+  static bool   commit_memory(char* addr, size_t bytes, bool executable);
   static bool   commit_memory(char* addr, size_t size, size_t alignment_hint,
-                              bool executable = false);
+                              bool executable);
+  // Same as commit_memory() that either succeeds or calls
+  // vm_exit_out_of_memory() with the specified mesg.
+  static void   commit_memory_or_exit(char* addr, size_t bytes,
+                                      bool executable, const char* mesg);
+  static void   commit_memory_or_exit(char* addr, size_t size,
+                                      size_t alignment_hint,
+                                      bool executable, const char* mesg);
   static bool   uncommit_memory(char* addr, size_t bytes);
   static bool   release_memory(char* addr, size_t bytes);
 
--- a/src/share/vm/runtime/sharedRuntime.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/runtime/sharedRuntime.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -2731,7 +2731,7 @@
   // ResourceObject, so do not put any ResourceMarks in here.
   char *s = sig->as_C_string();
   int len = (int)strlen(s);
-  *s++; len--;                  // Skip opening paren
+  s++; len--;                   // Skip opening paren
   char *t = s+len;
   while( *(--t) != ')' ) ;      // Find close paren
 
--- a/src/share/vm/runtime/virtualspace.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/runtime/virtualspace.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -533,11 +533,13 @@
            lower_high() + lower_needs <= lower_high_boundary(),
            "must not expand beyond region");
     if (!os::commit_memory(lower_high(), lower_needs, _executable)) {
-      debug_only(warning("os::commit_memory failed"));
+      debug_only(warning("INFO: os::commit_memory(" PTR_FORMAT
+                         ", lower_needs=" SIZE_FORMAT ", %d) failed",
+                         lower_high(), lower_needs, _executable);)
       return false;
     } else {
       _lower_high += lower_needs;
-     }
+    }
   }
   if (middle_needs > 0) {
     assert(lower_high_boundary() <= middle_high() &&
@@ -545,7 +547,10 @@
            "must not expand beyond region");
     if (!os::commit_memory(middle_high(), middle_needs, middle_alignment(),
                            _executable)) {
-      debug_only(warning("os::commit_memory failed"));
+      debug_only(warning("INFO: os::commit_memory(" PTR_FORMAT
+                         ", middle_needs=" SIZE_FORMAT ", " SIZE_FORMAT
+                         ", %d) failed", middle_high(), middle_needs,
+                         middle_alignment(), _executable);)
       return false;
     }
     _middle_high += middle_needs;
@@ -555,7 +560,9 @@
            upper_high() + upper_needs <= upper_high_boundary(),
            "must not expand beyond region");
     if (!os::commit_memory(upper_high(), upper_needs, _executable)) {
-      debug_only(warning("os::commit_memory failed"));
+      debug_only(warning("INFO: os::commit_memory(" PTR_FORMAT
+                         ", upper_needs=" SIZE_FORMAT ", %d) failed",
+                         upper_high(), upper_needs, _executable);)
       return false;
     } else {
       _upper_high += upper_needs;
--- a/src/share/vm/services/diagnosticArgument.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/services/diagnosticArgument.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -247,7 +247,7 @@
   } else {
     _value._time = 0;
     _value._nanotime = 0;
-    strcmp(_value._unit, "ns");
+    strcpy(_value._unit, "ns");
   }
 }
 
--- a/src/share/vm/services/memBaseline.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/services/memBaseline.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -130,7 +130,7 @@
       if (malloc_ptr->is_arena_record()) {
         // see if arena memory record present
         MemPointerRecord* next_malloc_ptr = (MemPointerRecordEx*)malloc_itr.peek_next();
-        if (next_malloc_ptr->is_arena_memory_record()) {
+        if (next_malloc_ptr != NULL && next_malloc_ptr->is_arena_memory_record()) {
           assert(next_malloc_ptr->is_memory_record_of_arena(malloc_ptr),
              "Arena records do not match");
           size = next_malloc_ptr->size();
--- a/src/share/vm/services/memPtr.hpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/services/memPtr.hpp	Wed Jun 19 18:13:52 2013 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -457,9 +457,8 @@
  public:
   SeqMemPointerRecord(): _seq(0){ }
 
-  SeqMemPointerRecord(address addr, MEMFLAGS flags, size_t size)
-    : MemPointerRecord(addr, flags, size) {
-    _seq = SequenceGenerator::next();
+  SeqMemPointerRecord(address addr, MEMFLAGS flags, size_t size, jint seq)
+    : MemPointerRecord(addr, flags, size), _seq(seq)  {
   }
 
   SeqMemPointerRecord(const SeqMemPointerRecord& copy_from)
@@ -488,8 +487,8 @@
   SeqMemPointerRecordEx(): _seq(0) { }
 
   SeqMemPointerRecordEx(address addr, MEMFLAGS flags, size_t size,
-    address pc): MemPointerRecordEx(addr, flags, size, pc) {
-    _seq = SequenceGenerator::next();
+    jint seq, address pc):
+    MemPointerRecordEx(addr, flags, size, pc), _seq(seq)  {
   }
 
   SeqMemPointerRecordEx(const SeqMemPointerRecordEx& copy_from)
--- a/src/share/vm/services/memRecorder.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/services/memRecorder.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -69,10 +69,11 @@
 
   if (_pointer_records != NULL) {
     // recode itself
+    address pc = CURRENT_PC;
     record((address)this, (MemPointerRecord::malloc_tag()|mtNMT|otNMTRecorder),
-        sizeof(MemRecorder), CALLER_PC);
+        sizeof(MemRecorder), SequenceGenerator::next(), pc);
     record((address)_pointer_records, (MemPointerRecord::malloc_tag()|mtNMT|otNMTRecorder),
-        _pointer_records->instance_size(),CURRENT_PC);
+        _pointer_records->instance_size(), SequenceGenerator::next(), pc);
   }
 }
 
@@ -116,7 +117,8 @@
   }
 }
 
-bool MemRecorder::record(address p, MEMFLAGS flags, size_t size, address pc) {
+bool MemRecorder::record(address p, MEMFLAGS flags, size_t size, jint seq, address pc) {
+  assert(seq > 0, "No sequence number");
 #ifdef ASSERT
   if (MemPointerRecord::is_virtual_memory_record(flags)) {
     assert((flags & MemPointerRecord::tag_masks) != 0, "bad virtual memory record");
@@ -133,11 +135,11 @@
 #endif
 
   if (MemTracker::track_callsite()) {
-    SeqMemPointerRecordEx ap(p, flags, size, pc);
+    SeqMemPointerRecordEx ap(p, flags, size, seq, pc);
     debug_only(check_dup_seq(ap.seq());)
     return _pointer_records->append(&ap);
   } else {
-    SeqMemPointerRecord ap(p, flags, size);
+    SeqMemPointerRecord ap(p, flags, size, seq);
     debug_only(check_dup_seq(ap.seq());)
     return _pointer_records->append(&ap);
   }
--- a/src/share/vm/services/memRecorder.hpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/services/memRecorder.hpp	Wed Jun 19 18:13:52 2013 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -220,7 +220,7 @@
   ~MemRecorder();
 
   // record a memory operation
-  bool record(address addr, MEMFLAGS flags, size_t size, address caller_pc = 0);
+  bool record(address addr, MEMFLAGS flags, size_t size, jint seq, address caller_pc = 0);
 
   // linked list support
   inline void set_next(MemRecorder* rec) {
--- a/src/share/vm/services/memReporter.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/services/memReporter.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -190,17 +190,18 @@
   while (cur_malloc_callsite != NULL || prev_malloc_callsite != NULL) {
     if (prev_malloc_callsite == NULL ||
         cur_malloc_callsite->addr() < prev_malloc_callsite->addr()) {
+      // this is a new callsite
       _outputer.diff_malloc_callsite(cur_malloc_callsite->addr(),
         amount_in_current_scale(cur_malloc_callsite->amount()),
         cur_malloc_callsite->count(),
         diff_in_current_scale(cur_malloc_callsite->amount(), 0),
         diff(cur_malloc_callsite->count(), 0));
       cur_malloc_callsite = (MallocCallsitePointer*)cur_malloc_itr.next();
-    } else if (prev_malloc_callsite == NULL ||
+    } else if (cur_malloc_callsite == NULL ||
                cur_malloc_callsite->addr() > prev_malloc_callsite->addr()) {
-      _outputer.diff_malloc_callsite(cur_malloc_callsite->addr(),
-        amount_in_current_scale(prev_malloc_callsite->amount()),
-        prev_malloc_callsite->count(),
+      // this callsite is already gone
+      _outputer.diff_malloc_callsite(prev_malloc_callsite->addr(),
+        amount_in_current_scale(0), 0,
         diff_in_current_scale(0, prev_malloc_callsite->amount()),
         diff(0, prev_malloc_callsite->count()));
       prev_malloc_callsite = (MallocCallsitePointer*)prev_malloc_itr.next();
@@ -222,6 +223,7 @@
   VMCallsitePointer*          prev_vm_callsite = (VMCallsitePointer*)prev_vm_itr.current();
   while (cur_vm_callsite != NULL || prev_vm_callsite != NULL) {
     if (prev_vm_callsite == NULL || cur_vm_callsite->addr() < prev_vm_callsite->addr()) {
+      // this is a new callsite
       _outputer.diff_virtual_memory_callsite(cur_vm_callsite->addr(),
         amount_in_current_scale(cur_vm_callsite->reserved_amount()),
         amount_in_current_scale(cur_vm_callsite->committed_amount()),
@@ -229,9 +231,10 @@
         diff_in_current_scale(cur_vm_callsite->committed_amount(), 0));
       cur_vm_callsite = (VMCallsitePointer*)cur_vm_itr.next();
     } else if (cur_vm_callsite == NULL || cur_vm_callsite->addr() > prev_vm_callsite->addr()) {
+      // this callsite is already gone
       _outputer.diff_virtual_memory_callsite(prev_vm_callsite->addr(),
-        amount_in_current_scale(prev_vm_callsite->reserved_amount()),
-        amount_in_current_scale(prev_vm_callsite->committed_amount()),
+        amount_in_current_scale(0),
+        amount_in_current_scale(0),
         diff_in_current_scale(0, prev_vm_callsite->reserved_amount()),
         diff_in_current_scale(0, prev_vm_callsite->committed_amount()));
       prev_vm_callsite = (VMCallsitePointer*)prev_vm_itr.next();
--- a/src/share/vm/services/memTracker.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/services/memTracker.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -69,6 +69,7 @@
 volatile jint                   MemTracker::_pooled_recorder_count = 0;
 volatile unsigned long          MemTracker::_processing_generation = 0;
 volatile bool                   MemTracker::_worker_thread_idle = false;
+volatile jint                   MemTracker::_pending_op_count = 0;
 volatile bool                   MemTracker::_slowdown_calling_thread = false;
 debug_only(intx                 MemTracker::_main_thread_tid = 0;)
 NOT_PRODUCT(volatile jint       MemTracker::_pending_recorder_count = 0;)
@@ -337,92 +338,14 @@
   Atomic::inc(&_pooled_recorder_count);
 }
 
-/*
- * This is the most important method in whole nmt implementation.
- *
- * Create a memory record.
- * 1. When nmt is in single-threaded bootstrapping mode, no lock is needed as VM
- *    still in single thread mode.
- * 2. For all threads other than JavaThread, ThreadCritical is needed
- *    to write to recorders to global recorder.
- * 3. For JavaThreads that are not longer visible by safepoint, also
- *    need to take ThreadCritical and records are written to global
- *    recorders, since these threads are NOT walked by Threads.do_thread().
- * 4. JavaThreads that are running in native state, have to transition
- *    to VM state before writing to per-thread recorders.
- * 5. JavaThreads that are running in VM state do not need any lock and
- *    records are written to per-thread recorders.
- * 6. For a thread has yet to attach VM 'Thread', they need to take
- *    ThreadCritical to write to global recorder.
- *
- *    Important note:
- *    NO LOCK should be taken inside ThreadCritical lock !!!
- */
-void MemTracker::create_memory_record(address addr, MEMFLAGS flags,
-    size_t size, address pc, Thread* thread) {
-  assert(addr != NULL, "Sanity check");
-  if (!shutdown_in_progress()) {
-    // single thread, we just write records direct to global recorder,'
-    // with any lock
-    if (_state == NMT_bootstrapping_single_thread) {
-      assert(_main_thread_tid == os::current_thread_id(), "wrong thread");
-      thread = NULL;
-    } else {
-      if (thread == NULL) {
-          // don't use Thread::current(), since it is possible that
-          // the calling thread has yet to attach to VM 'Thread',
-          // which will result assertion failure
-          thread = ThreadLocalStorage::thread();
-      }
-    }
-
-    if (thread != NULL) {
-      // slow down all calling threads except NMT worker thread, so it
-      // can catch up.
-      if (_slowdown_calling_thread && thread != _worker_thread) {
-        os::yield_all();
-      }
-
-      if (thread->is_Java_thread() && ((JavaThread*)thread)->is_safepoint_visible()) {
-        JavaThread*      java_thread = (JavaThread*)thread;
-        JavaThreadState  state = java_thread->thread_state();
-        if (SafepointSynchronize::safepoint_safe(java_thread, state)) {
-          // JavaThreads that are safepoint safe, can run through safepoint,
-          // so ThreadCritical is needed to ensure no threads at safepoint create
-          // new records while the records are being gathered and the sequence number is changing
-          ThreadCritical tc;
-          create_record_in_recorder(addr, flags, size, pc, java_thread);
-        } else {
-          create_record_in_recorder(addr, flags, size, pc, java_thread);
-        }
-      } else {
-        // other threads, such as worker and watcher threads, etc. need to
-        // take ThreadCritical to write to global recorder
-        ThreadCritical tc;
-        create_record_in_recorder(addr, flags, size, pc, NULL);
-      }
-    } else {
-      if (_state == NMT_bootstrapping_single_thread) {
-        // single thread, no lock needed
-        create_record_in_recorder(addr, flags, size, pc, NULL);
-      } else {
-        // for thread has yet to attach VM 'Thread', we can not use VM mutex.
-        // use native thread critical instead
-        ThreadCritical tc;
-        create_record_in_recorder(addr, flags, size, pc, NULL);
-      }
-    }
-  }
-}
-
 // write a record to proper recorder. No lock can be taken from this method
 // down.
-void MemTracker::create_record_in_recorder(address addr, MEMFLAGS flags,
-    size_t size, address pc, JavaThread* thread) {
+void MemTracker::write_tracking_record(address addr, MEMFLAGS flags,
+    size_t size, jint seq, address pc, JavaThread* thread) {
 
     MemRecorder* rc = get_thread_recorder(thread);
     if (rc != NULL) {
-      rc->record(addr, flags, size, pc);
+      rc->record(addr, flags, size, seq, pc);
     }
 }
 
@@ -487,39 +410,43 @@
         return;
       }
     }
-    _sync_point_skip_count = 0;
     {
       // This method is running at safepoint, with ThreadCritical lock,
       // it should guarantee that NMT is fully sync-ed.
       ThreadCritical tc;
 
-      SequenceGenerator::reset();
+      // We can NOT execute NMT sync-point if there are pending tracking ops.
+      if (_pending_op_count == 0) {
+        SequenceGenerator::reset();
+        _sync_point_skip_count = 0;
 
-      // walk all JavaThreads to collect recorders
-      SyncThreadRecorderClosure stc;
-      Threads::threads_do(&stc);
+        // walk all JavaThreads to collect recorders
+        SyncThreadRecorderClosure stc;
+        Threads::threads_do(&stc);
 
-      _thread_count = stc.get_thread_count();
-      MemRecorder* pending_recorders = get_pending_recorders();
+        _thread_count = stc.get_thread_count();
+        MemRecorder* pending_recorders = get_pending_recorders();
 
-      if (_global_recorder != NULL) {
-        _global_recorder->set_next(pending_recorders);
-        pending_recorders = _global_recorder;
-        _global_recorder = NULL;
+        if (_global_recorder != NULL) {
+          _global_recorder->set_next(pending_recorders);
+          pending_recorders = _global_recorder;
+          _global_recorder = NULL;
+        }
+
+        // see if NMT has too many outstanding recorder instances, it usually
+        // means that worker thread is lagging behind in processing them.
+        if (!AutoShutdownNMT) {
+          _slowdown_calling_thread = (MemRecorder::_instance_count > MAX_RECORDER_THREAD_RATIO * _thread_count);
+        }
+
+        // check _worker_thread with lock to avoid racing condition
+        if (_worker_thread != NULL) {
+          _worker_thread->at_sync_point(pending_recorders, InstanceKlass::number_of_instance_classes());
+        }
+        assert(SequenceGenerator::peek() == 1, "Should not have memory activities during sync-point");
+      } else {
+        _sync_point_skip_count ++;
       }
-
-      // see if NMT has too many outstanding recorder instances, it usually
-      // means that worker thread is lagging behind in processing them.
-      if (!AutoShutdownNMT) {
-        _slowdown_calling_thread = (MemRecorder::_instance_count > MAX_RECORDER_THREAD_RATIO * _thread_count);
-      }
-
-      // check _worker_thread with lock to avoid racing condition
-      if (_worker_thread != NULL) {
-        _worker_thread->at_sync_point(pending_recorders, InstanceKlass::number_of_instance_classes());
-      }
-
-      assert(SequenceGenerator::peek() == 1, "Should not have memory activities during sync-point");
     }
   }
 
@@ -708,3 +635,243 @@
 }
 #endif
 
+
+// Tracker Implementation
+
+/*
+ * Create a tracker.
+ * This is a fairly complicated constructor, as it has to make two important decisions:
+ *   1) Does it need to take ThreadCritical lock to write tracking record
+ *   2) Does it need to pre-reserve a sequence number for the tracking record
+ *
+ * The rules to determine if ThreadCritical is needed:
+ *   1. When nmt is in single-threaded bootstrapping mode, no lock is needed as VM
+ *      still in single thread mode.
+ *   2. For all threads other than JavaThread, ThreadCritical is needed
+ *      to write to recorders to global recorder.
+ *   3. For JavaThreads that are no longer visible by safepoint, also
+ *      need to take ThreadCritical and records are written to global
+ *      recorders, since these threads are NOT walked by Threads.do_thread().
+ *   4. JavaThreads that are running in safepoint-safe states do not stop
+ *      for safepoints, ThreadCritical lock should be taken to write
+ *      memory records.
+ *   5. JavaThreads that are running in VM state do not need any lock and
+ *      records are written to per-thread recorders.
+ *   6. For a thread has yet to attach VM 'Thread', they need to take
+ *      ThreadCritical to write to global recorder.
+ *
+ *  The memory operations that need pre-reserve sequence numbers:
+ *    The memory operations that "release" memory blocks and the
+ *    operations can fail, need to pre-reserve sequence number. They
+ *    are realloc, uncommit and release.
+ *
+ *  The reason for pre-reserve sequence number, is to prevent race condition:
+ *    Thread 1                      Thread 2
+ *    <release>
+ *                                  <allocate>
+ *                                  <write allocate record>
+ *   <write release record>
+ *   if Thread 2 happens to obtain the memory address Thread 1 just released,
+ *   then NMT can mistakenly report the memory is free.
+ *
+ *  Noticeably, free() does not need pre-reserve sequence number, because the call
+ *  does not fail, so we can alway write "release" record before the memory is actaully
+ *  freed.
+ *
+ *  For realloc, uncommit and release, following coding pattern should be used:
+ *
+ *     MemTracker::Tracker tkr = MemTracker::get_realloc_tracker();
+ *     ptr = ::realloc(...);
+ *     if (ptr == NULL) {
+ *       tkr.record(...)
+ *     } else {
+ *       tkr.discard();
+ *     }
+ *
+ *     MemTracker::Tracker tkr = MemTracker::get_virtual_memory_uncommit_tracker();
+ *     if (uncommit(...)) {
+ *       tkr.record(...);
+ *     } else {
+ *       tkr.discard();
+ *     }
+ *
+ *     MemTracker::Tracker tkr = MemTracker::get_virtual_memory_release_tracker();
+ *     if (release(...)) {
+ *       tkr.record(...);
+ *     } else {
+ *       tkr.discard();
+ *     }
+ *
+ * Since pre-reserved sequence number is only good for the generation that it is acquired,
+ * when there is pending Tracker that reserved sequence number, NMT sync-point has
+ * to be skipped to prevent from advancing generation. This is done by inc and dec
+ * MemTracker::_pending_op_count, when MemTracker::_pending_op_count > 0, NMT sync-point is skipped.
+ * Not all pre-reservation of sequence number will increment pending op count. For JavaThreads
+ * that honor safepoints, safepoint can not occur during the memory operations, so the
+ * pre-reserved sequence number won't cross the generation boundry.
+ */
+MemTracker::Tracker::Tracker(MemoryOperation op, Thread* thr) {
+  _op = NoOp;
+  _seq = 0;
+  if (MemTracker::is_on()) {
+    _java_thread = NULL;
+    _op = op;
+
+    // figure out if ThreadCritical lock is needed to write this operation
+    // to MemTracker
+    if (MemTracker::is_single_threaded_bootstrap()) {
+      thr = NULL;
+    } else if (thr == NULL) {
+      // don't use Thread::current(), since it is possible that
+      // the calling thread has yet to attach to VM 'Thread',
+      // which will result assertion failure
+      thr = ThreadLocalStorage::thread();
+    }
+
+    if (thr != NULL) {
+      // Check NMT load
+      MemTracker::check_NMT_load(thr);
+
+      if (thr->is_Java_thread() && ((JavaThread*)thr)->is_safepoint_visible()) {
+        _java_thread = (JavaThread*)thr;
+        JavaThreadState  state = _java_thread->thread_state();
+        // JavaThreads that are safepoint safe, can run through safepoint,
+        // so ThreadCritical is needed to ensure no threads at safepoint create
+        // new records while the records are being gathered and the sequence number is changing
+        _need_thread_critical_lock =
+          SafepointSynchronize::safepoint_safe(_java_thread, state);
+      } else {
+        _need_thread_critical_lock = true;
+      }
+    } else {
+       _need_thread_critical_lock
+         = !MemTracker::is_single_threaded_bootstrap();
+    }
+
+    // see if we need to pre-reserve sequence number for this operation
+    if (_op == Realloc || _op == Uncommit || _op == Release) {
+      if (_need_thread_critical_lock) {
+        ThreadCritical tc;
+        MemTracker::inc_pending_op_count();
+        _seq = SequenceGenerator::next();
+      } else {
+        // for the threads that honor safepoints, no safepoint can occur
+        // during the lifespan of tracker, so we don't need to increase
+        // pending op count.
+        _seq = SequenceGenerator::next();
+      }
+    }
+  }
+}
+
+void MemTracker::Tracker::discard() {
+  if (MemTracker::is_on() && _seq != 0) {
+    if (_need_thread_critical_lock) {
+      ThreadCritical tc;
+      MemTracker::dec_pending_op_count();
+    }
+    _seq = 0;
+  }
+}
+
+
+void MemTracker::Tracker::record(address old_addr, address new_addr, size_t size,
+  MEMFLAGS flags, address pc) {
+  assert(old_addr != NULL && new_addr != NULL, "Sanity check");
+  assert(_op == Realloc || _op == NoOp, "Wrong call");
+  if (MemTracker::is_on() && NMT_CAN_TRACK(flags) && _op != NoOp) {
+    assert(_seq > 0, "Need pre-reserve sequence number");
+    if (_need_thread_critical_lock) {
+      ThreadCritical tc;
+      // free old address, use pre-reserved sequence number
+      MemTracker::write_tracking_record(old_addr, MemPointerRecord::free_tag(),
+        0, _seq, pc, _java_thread);
+      MemTracker::write_tracking_record(new_addr, flags | MemPointerRecord::malloc_tag(),
+        size, SequenceGenerator::next(), pc, _java_thread);
+      // decrement MemTracker pending_op_count
+      MemTracker::dec_pending_op_count();
+    } else {
+      // free old address, use pre-reserved sequence number
+      MemTracker::write_tracking_record(old_addr, MemPointerRecord::free_tag(),
+        0, _seq, pc, _java_thread);
+      MemTracker::write_tracking_record(new_addr, flags | MemPointerRecord::malloc_tag(),
+        size, SequenceGenerator::next(), pc, _java_thread);
+    }
+    _seq = 0;
+  }
+}
+
+void MemTracker::Tracker::record(address addr, size_t size, MEMFLAGS flags, address pc) {
+  // OOM already?
+  if (addr == NULL) return;
+
+  if (MemTracker::is_on() && NMT_CAN_TRACK(flags) && _op != NoOp) {
+    bool pre_reserved_seq = (_seq != 0);
+    address  pc = CALLER_CALLER_PC;
+    MEMFLAGS orig_flags = flags;
+
+    // or the tagging flags
+    switch(_op) {
+      case Malloc:
+        flags |= MemPointerRecord::malloc_tag();
+        break;
+      case Free:
+        flags = MemPointerRecord::free_tag();
+        break;
+      case Realloc:
+        fatal("Use the other Tracker::record()");
+        break;
+      case Reserve:
+      case ReserveAndCommit:
+        flags |= MemPointerRecord::virtual_memory_reserve_tag();
+        break;
+      case Commit:
+        flags = MemPointerRecord::virtual_memory_commit_tag();
+        break;
+      case Type:
+        flags |= MemPointerRecord::virtual_memory_type_tag();
+        break;
+      case Uncommit:
+        assert(pre_reserved_seq, "Need pre-reserve sequence number");
+        flags = MemPointerRecord::virtual_memory_uncommit_tag();
+        break;
+      case Release:
+        assert(pre_reserved_seq, "Need pre-reserve sequence number");
+        flags = MemPointerRecord::virtual_memory_release_tag();
+        break;
+      case ArenaSize:
+        // a bit of hack here, add a small postive offset to arena
+        // address for its size record, so the size record is sorted
+        // right after arena record.
+        flags = MemPointerRecord::arena_size_tag();
+        addr += sizeof(void*);
+        break;
+      case StackRelease:
+        flags = MemPointerRecord::virtual_memory_release_tag();
+        break;
+      default:
+        ShouldNotReachHere();
+    }
+
+    // write memory tracking record
+    if (_need_thread_critical_lock) {
+      ThreadCritical tc;
+      if (_seq == 0) _seq = SequenceGenerator::next();
+      MemTracker::write_tracking_record(addr, flags, size, _seq, pc, _java_thread);
+      if (_op == ReserveAndCommit) {
+        MemTracker::write_tracking_record(addr, orig_flags | MemPointerRecord::virtual_memory_commit_tag(),
+          size, SequenceGenerator::next(), pc, _java_thread);
+      }
+      if (pre_reserved_seq) MemTracker::dec_pending_op_count();
+    } else {
+      if (_seq == 0) _seq = SequenceGenerator::next();
+      MemTracker::write_tracking_record(addr, flags, size, _seq, pc, _java_thread);
+      if (_op == ReserveAndCommit) {
+        MemTracker::write_tracking_record(addr, orig_flags | MemPointerRecord::virtual_memory_commit_tag(),
+          size, SequenceGenerator::next(), pc, _java_thread);
+      }
+    }
+    _seq = 0;
+  }
+}
+
--- a/src/share/vm/services/memTracker.hpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/services/memTracker.hpp	Wed Jun 19 18:13:52 2013 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -54,6 +54,18 @@
       NMT_sequence_overflow  // overflow the sequence number
    };
 
+  class Tracker {
+   public:
+    void discard() { }
+
+    void record(address addr, size_t size = 0, MEMFLAGS flags = mtNone, address pc = NULL) { }
+    void record(address old_addr, address new_addr, size_t size,
+      MEMFLAGS flags, address pc = NULL) { }
+  };
+
+  private:
+   static Tracker  _tkr;
+
 
   public:
    static inline void init_tracking_options(const char* option_line) { }
@@ -68,19 +80,18 @@
    static inline void record_malloc(address addr, size_t size, MEMFLAGS flags,
         address pc = 0, Thread* thread = NULL) { }
    static inline void record_free(address addr, MEMFLAGS flags, Thread* thread = NULL) { }
-   static inline void record_realloc(address old_addr, address new_addr, size_t size,
-        MEMFLAGS flags, address pc = 0, Thread* thread = NULL) { }
    static inline void record_arena_size(address addr, size_t size) { }
    static inline void record_virtual_memory_reserve(address addr, size_t size,
-        address pc = 0, Thread* thread = NULL) { }
+        MEMFLAGS flags, address pc = 0, Thread* thread = NULL) { }
+   static inline void record_virtual_memory_reserve_and_commit(address addr, size_t size,
+        MEMFLAGS flags, address pc = 0, Thread* thread = NULL) { }
    static inline void record_virtual_memory_commit(address addr, size_t size,
         address pc = 0, Thread* thread = NULL) { }
-   static inline void record_virtual_memory_uncommit(address addr, size_t size,
-        Thread* thread = NULL) { }
-   static inline void record_virtual_memory_release(address addr, size_t size,
-        Thread* thread = NULL) { }
    static inline void record_virtual_memory_type(address base, MEMFLAGS flags,
         Thread* thread = NULL) { }
+   static inline Tracker get_realloc_tracker() { return _tkr; }
+   static inline Tracker get_virtual_memory_uncommit_tracker() { return _tkr; }
+   static inline Tracker get_virtual_memory_release_tracker()  { return _tkr; }
    static inline bool baseline() { return false; }
    static inline bool has_baseline() { return false; }
 
@@ -165,6 +176,45 @@
   };
 
  public:
+  class Tracker : public StackObj {
+    friend class MemTracker;
+   public:
+    enum MemoryOperation {
+      NoOp,                   // no op
+      Malloc,                 // malloc
+      Realloc,                // realloc
+      Free,                   // free
+      Reserve,                // virtual memory reserve
+      Commit,                 // virtual memory commit
+      ReserveAndCommit,       // virtual memory reserve and commit
+      StackAlloc = ReserveAndCommit, // allocate thread stack
+      Type,                   // assign virtual memory type
+      Uncommit,               // virtual memory uncommit
+      Release,                // virtual memory release
+      ArenaSize,              // set arena size
+      StackRelease            // release thread stack
+    };
+
+
+   protected:
+    Tracker(MemoryOperation op, Thread* thr = NULL);
+
+   public:
+    void discard();
+
+    void record(address addr, size_t size = 0, MEMFLAGS flags = mtNone, address pc = NULL);
+    void record(address old_addr, address new_addr, size_t size,
+      MEMFLAGS flags, address pc = NULL);
+
+   private:
+    bool            _need_thread_critical_lock;
+    JavaThread*     _java_thread;
+    MemoryOperation _op;          // memory operation
+    jint            _seq;         // reserved sequence number
+  };
+
+
+ public:
   // native memory tracking level
   enum NMTLevel {
     NMT_off,              // native memory tracking is off
@@ -276,109 +326,74 @@
   // record a 'malloc' call
   static inline void record_malloc(address addr, size_t size, MEMFLAGS flags,
                             address pc = 0, Thread* thread = NULL) {
-    if (is_on() && NMT_CAN_TRACK(flags)) {
-      assert(size > 0, "Sanity check");
-      create_memory_record(addr, (flags|MemPointerRecord::malloc_tag()), size, pc, thread);
-    }
+    Tracker tkr(Tracker::Malloc, thread);
+    tkr.record(addr, size, flags, pc);
   }
   // record a 'free' call
   static inline void record_free(address addr, MEMFLAGS flags, Thread* thread = NULL) {
-    if (is_on() && NMT_CAN_TRACK(flags)) {
-      create_memory_record(addr, MemPointerRecord::free_tag(), 0, 0, thread);
-    }
-  }
-  // record a 'realloc' call
-  static inline void record_realloc(address old_addr, address new_addr, size_t size,
-       MEMFLAGS flags, address pc = 0, Thread* thread = NULL) {
-    if (is_on() && NMT_CAN_TRACK(flags)) {
-      assert(size > 0, "Sanity check");
-      record_free(old_addr, flags, thread);
-      record_malloc(new_addr, size, flags, pc, thread);
-    }
+    Tracker tkr(Tracker::Free, thread);
+    tkr.record(addr, 0, flags, DEBUG_CALLER_PC);
   }
 
-  // record arena memory size
   static inline void record_arena_size(address addr, size_t size) {
-    // we add a positive offset to arena address, so we can have arena memory record
-    // sorted after arena record
-    if (is_on() && !UseMallocOnly) {
-      assert(addr != NULL, "Sanity check");
-      create_memory_record((addr + sizeof(void*)), MemPointerRecord::arena_size_tag(), size,
-        DEBUG_CALLER_PC, NULL);
-    }
+    Tracker tkr(Tracker::ArenaSize);
+    tkr.record(addr, size);
   }
 
   // record a virtual memory 'reserve' call
   static inline void record_virtual_memory_reserve(address addr, size_t size,
-                            address pc = 0, Thread* thread = NULL) {
-    if (is_on()) {
-      assert(size > 0, "Sanity check");
-      create_memory_record(addr, MemPointerRecord::virtual_memory_reserve_tag(),
-                           size, pc, thread);
-    }
+                     MEMFLAGS flags, address pc = 0, Thread* thread = NULL) {
+    assert(size > 0, "Sanity check");
+    Tracker tkr(Tracker::Reserve, thread);
+    tkr.record(addr, size, flags, pc);
   }
 
   static inline void record_thread_stack(address addr, size_t size, Thread* thr,
                            address pc = 0) {
-    if (is_on()) {
-      assert(size > 0 && thr != NULL, "Sanity check");
-      create_memory_record(addr, MemPointerRecord::virtual_memory_reserve_tag() | mtThreadStack,
-                          size, pc, thr);
-      create_memory_record(addr, MemPointerRecord::virtual_memory_commit_tag() | mtThreadStack,
-                          size, pc, thr);
-    }
+    Tracker tkr(Tracker::StackAlloc, thr);
+    tkr.record(addr, size, mtThreadStack, pc);
   }
 
   static inline void release_thread_stack(address addr, size_t size, Thread* thr) {
-    if (is_on()) {
-      assert(size > 0 && thr != NULL, "Sanity check");
-      assert(!thr->is_Java_thread(), "too early");
-      create_memory_record(addr, MemPointerRecord::virtual_memory_uncommit_tag() | mtThreadStack,
-                          size, DEBUG_CALLER_PC, thr);
-      create_memory_record(addr, MemPointerRecord::virtual_memory_release_tag() | mtThreadStack,
-                          size, DEBUG_CALLER_PC, thr);
-    }
+    Tracker tkr(Tracker::StackRelease, thr);
+    tkr.record(addr, size, mtThreadStack, DEBUG_CALLER_PC);
   }
 
   // record a virtual memory 'commit' call
   static inline void record_virtual_memory_commit(address addr, size_t size,
                             address pc, Thread* thread = NULL) {
-    if (is_on()) {
-      assert(size > 0, "Sanity check");
-      create_memory_record(addr, MemPointerRecord::virtual_memory_commit_tag(),
-                           size, pc, thread);
-    }
+    Tracker tkr(Tracker::Commit, thread);
+    tkr.record(addr, size, mtNone, pc);
   }
 
-  // record a virtual memory 'uncommit' call
-  static inline void record_virtual_memory_uncommit(address addr, size_t size,
-                            Thread* thread = NULL) {
-    if (is_on()) {
-      assert(size > 0, "Sanity check");
-      create_memory_record(addr, MemPointerRecord::virtual_memory_uncommit_tag(),
-                           size, DEBUG_CALLER_PC, thread);
-    }
+  static inline void record_virtual_memory_reserve_and_commit(address addr, size_t size,
+    MEMFLAGS flags, address pc, Thread* thread = NULL) {
+    Tracker tkr(Tracker::ReserveAndCommit, thread);
+    tkr.record(addr, size, flags, pc);
   }
 
-  // record a virtual memory 'release' call
-  static inline void record_virtual_memory_release(address addr, size_t size,
-                            Thread* thread = NULL) {
-    if (is_on()) {
-      assert(size > 0, "Sanity check");
-      create_memory_record(addr, MemPointerRecord::virtual_memory_release_tag(),
-                           size, DEBUG_CALLER_PC, thread);
-    }
-  }
 
   // record memory type on virtual memory base address
   static inline void record_virtual_memory_type(address base, MEMFLAGS flags,
                             Thread* thread = NULL) {
-    if (is_on()) {
-      assert(base > 0, "wrong base address");
-      assert((flags & (~mt_masks)) == 0, "memory type only");
-      create_memory_record(base, (flags | MemPointerRecord::virtual_memory_type_tag()),
-                           0, DEBUG_CALLER_PC, thread);
-    }
+    Tracker tkr(Tracker::Type);
+    tkr.record(base, 0, flags);
+  }
+
+  // Get memory trackers for memory operations that can result race conditions.
+  // The memory tracker has to be obtained before realloc, virtual memory uncommit
+  // and virtual memory release, and call tracker.record() method if operation
+  // succeeded, or tracker.discard() to abort the tracking.
+  static inline Tracker get_realloc_tracker() {
+    return Tracker(Tracker::Realloc);
+  }
+
+  static inline Tracker get_virtual_memory_uncommit_tracker() {
+    return Tracker(Tracker::Uncommit);
+  }
+
+  static inline Tracker get_virtual_memory_release_tracker() {
+    return Tracker(Tracker::Release);
   }
 
 
@@ -444,6 +459,31 @@
   static MemRecorder* get_pending_recorders();
   static void delete_all_pending_recorders();
 
+  // write a memory tracking record in recorder
+  static void write_tracking_record(address addr, MEMFLAGS type,
+    size_t size, jint seq, address pc, JavaThread* thread);
+
+  static bool is_single_threaded_bootstrap() {
+    return _state == NMT_bootstrapping_single_thread;
+  }
+
+  static void check_NMT_load(Thread* thr) {
+    assert(thr != NULL, "Sanity check");
+    if (_slowdown_calling_thread && thr != _worker_thread) {
+      os::yield_all();
+    }
+  }
+
+  static void inc_pending_op_count() {
+    Atomic::inc(&_pending_op_count);
+  }
+
+  static void dec_pending_op_count() {
+    Atomic::dec(&_pending_op_count);
+    assert(_pending_op_count >= 0, "Sanity check");
+  }
+
+
  private:
   // retrieve a pooled memory record or create new one if there is not
   // one available
@@ -522,6 +562,12 @@
   // if NMT should slow down calling thread to allow
   // worker thread to catch up
   static volatile bool             _slowdown_calling_thread;
+
+  // pending memory op count.
+  // Certain memory ops need to pre-reserve sequence number
+  // before memory operation can happen to avoid race condition.
+  // See MemTracker::Tracker for detail
+  static volatile jint             _pending_op_count;
 };
 
 #endif // !INCLUDE_NMT
--- a/src/share/vm/services/threadService.cpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/services/threadService.cpp	Wed Jun 19 18:13:52 2013 +0200
@@ -327,27 +327,30 @@
     while (waitingToLockMonitor != NULL || waitingToLockBlocker != NULL) {
       cycle->add_thread(currentThread);
       if (waitingToLockMonitor != NULL) {
-        currentThread = Threads::owning_thread_from_monitor_owner(
-                          (address)waitingToLockMonitor->owner(),
-                          false /* no locking needed */);
-        if (currentThread == NULL) {
-          // This function is called at a safepoint so the JavaThread
-          // that owns waitingToLockMonitor should be findable, but
-          // if it is not findable, then the previous currentThread is
-          // blocked permanently. We record this as a deadlock.
-          num_deadlocks++;
+        address currentOwner = (address)waitingToLockMonitor->owner();
+        if (currentOwner != NULL) {
+          currentThread = Threads::owning_thread_from_monitor_owner(
+                            currentOwner,
+                            false /* no locking needed */);
+          if (currentThread == NULL) {
+            // This function is called at a safepoint so the JavaThread
+            // that owns waitingToLockMonitor should be findable, but
+            // if it is not findable, then the previous currentThread is
+            // blocked permanently. We record this as a deadlock.
+            num_deadlocks++;
 
-          cycle->set_deadlock(true);
+            cycle->set_deadlock(true);
 
-          // add this cycle to the deadlocks list
-          if (deadlocks == NULL) {
-            deadlocks = cycle;
-          } else {
-            last->set_next(cycle);
+            // add this cycle to the deadlocks list
+            if (deadlocks == NULL) {
+              deadlocks = cycle;
+            } else {
+              last->set_next(cycle);
+            }
+            last = cycle;
+            cycle = new DeadlockCycle();
+            break;
           }
-          last = cycle;
-          cycle = new DeadlockCycle();
-          break;
         }
       } else {
         if (concurrent_locks) {
--- a/src/share/vm/utilities/exceptions.hpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/utilities/exceptions.hpp	Wed Jun 19 18:13:52 2013 +0200
@@ -194,15 +194,15 @@
 #define HAS_PENDING_EXCEPTION                    (((ThreadShadow*)THREAD)->has_pending_exception())
 #define CLEAR_PENDING_EXCEPTION                  (((ThreadShadow*)THREAD)->clear_pending_exception())
 
-#define CHECK                                    THREAD); if (HAS_PENDING_EXCEPTION) return       ; (0
-#define CHECK_(result)                           THREAD); if (HAS_PENDING_EXCEPTION) return result; (0
+#define CHECK                                    THREAD); if (HAS_PENDING_EXCEPTION) return       ; (void)(0
+#define CHECK_(result)                           THREAD); if (HAS_PENDING_EXCEPTION) return result; (void)(0
 #define CHECK_0                                  CHECK_(0)
 #define CHECK_NH                                 CHECK_(Handle())
 #define CHECK_NULL                               CHECK_(NULL)
 #define CHECK_false                              CHECK_(false)
 
-#define CHECK_AND_CLEAR                         THREAD); if (HAS_PENDING_EXCEPTION) { CLEAR_PENDING_EXCEPTION; return;        } (0
-#define CHECK_AND_CLEAR_(result)                THREAD); if (HAS_PENDING_EXCEPTION) { CLEAR_PENDING_EXCEPTION; return result; } (0
+#define CHECK_AND_CLEAR                         THREAD); if (HAS_PENDING_EXCEPTION) { CLEAR_PENDING_EXCEPTION; return;        } (void)(0
+#define CHECK_AND_CLEAR_(result)                THREAD); if (HAS_PENDING_EXCEPTION) { CLEAR_PENDING_EXCEPTION; return result; } (void)(0
 #define CHECK_AND_CLEAR_0                       CHECK_AND_CLEAR_(0)
 #define CHECK_AND_CLEAR_NH                      CHECK_AND_CLEAR_(Handle())
 #define CHECK_AND_CLEAR_NULL                    CHECK_AND_CLEAR_(NULL)
@@ -282,7 +282,7 @@
     CLEAR_PENDING_EXCEPTION;               \
     ex->print();                           \
     ShouldNotReachHere();                  \
-  } (0
+  } (void)(0
 
 // ExceptionMark is a stack-allocated helper class for local exception handling.
 // It is used with the EXCEPTION_MARK macro.
--- a/src/share/vm/utilities/taskqueue.hpp	Fri Jun 14 07:27:22 2013 -0700
+++ b/src/share/vm/utilities/taskqueue.hpp	Wed Jun 19 18:13:52 2013 +0200
@@ -340,8 +340,12 @@
   if (dirty_n_elems == N - 1) {
     // Actually means 0, so do the push.
     uint localBot = _bottom;
-    // g++ complains if the volatile result of the assignment is unused.
-    const_cast<E&>(_elems[localBot] = t);
+    // g++ complains if the volatile result of the assignment is
+    // unused, so we cast the volatile away.  We cannot cast directly
+    // to void, because gcc treats that as not using the result of the
+    // assignment.  However, casting to E& means that we trigger an
+    // unused-value warning.  So, we cast the E& to void.
+    (void)const_cast<E&>(_elems[localBot] = t);
     OrderAccess::release_store(&_bottom, increment_index(localBot));
     TASKQUEUE_STATS_ONLY(stats.record_push());
     return true;
@@ -397,7 +401,12 @@
     return false;
   }
 
-  const_cast<E&>(t = _elems[oldAge.top()]);
+  // g++ complains if the volatile result of the assignment is
+  // unused, so we cast the volatile away.  We cannot cast directly
+  // to void, because gcc treats that as not using the result of the
+  // assignment.  However, casting to E& means that we trigger an
+  // unused-value warning.  So, we cast the E& to void.
+  (void) const_cast<E&>(t = _elems[oldAge.top()]);
   Age newAge(oldAge);
   newAge.increment();
   Age resAge = _age.cmpxchg(newAge, oldAge);
@@ -640,8 +649,12 @@
   uint dirty_n_elems = dirty_size(localBot, top);
   assert(dirty_n_elems < N, "n_elems out of range.");
   if (dirty_n_elems < max_elems()) {
-    // g++ complains if the volatile result of the assignment is unused.
-    const_cast<E&>(_elems[localBot] = t);
+    // g++ complains if the volatile result of the assignment is
+    // unused, so we cast the volatile away.  We cannot cast directly
+    // to void, because gcc treats that as not using the result of the
+    // assignment.  However, casting to E& means that we trigger an
+    // unused-value warning.  So, we cast the E& to void.
+    (void) const_cast<E&>(_elems[localBot] = t);
     OrderAccess::release_store(&_bottom, increment_index(localBot));
     TASKQUEUE_STATS_ONLY(stats.record_push());
     return true;
@@ -665,7 +678,12 @@
   // This is necessary to prevent any read below from being reordered
   // before the store just above.
   OrderAccess::fence();
-  const_cast<E&>(t = _elems[localBot]);
+  // g++ complains if the volatile result of the assignment is
+  // unused, so we cast the volatile away.  We cannot cast directly
+  // to void, because gcc treats that as not using the result of the
+  // assignment.  However, casting to E& means that we trigger an
+  // unused-value warning.  So, we cast the E& to void.
+  (void) const_cast<E&>(t = _elems[localBot]);
   // This is a second read of "age"; the "size()" above is the first.
   // If there's still at least one element in the queue, based on the
   // "_bottom" and "age" we've read, then there can be no interference with
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/runtime/CommandLine/CompilerConfigFileWarning.java	Wed Jun 19 18:13:52 2013 +0200
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 7167142
+ * @summary Warn if unused .hotspot_compiler file is present
+ * @library /testlibrary
+ */
+
+import java.io.PrintWriter;
+import com.oracle.java.testlibrary.*;
+
+public class CompilerConfigFileWarning {
+    public static void main(String[] args) throws Exception {
+        String vmVersion = System.getProperty("java.vm.version");
+        if (vmVersion.toLowerCase().contains("debug") || vmVersion.toLowerCase().contains("jvmg")) {
+            System.out.println("Skip on debug builds since we'll always read the file there");
+            return;
+        }
+
+        PrintWriter pw = new PrintWriter(".hotspot_compiler");
+        pw.println("aa");
+        pw.close();
+
+        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-version");
+        OutputAnalyzer output = new OutputAnalyzer(pb.start());
+        output.shouldContain("warning: .hotspot_compiler file is present but has been ignored.  Run with -XX:CompileCommandFile=.hotspot_compiler to load the file.");
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/runtime/CommandLine/ConfigFileWarning.java	Wed Jun 19 18:13:52 2013 +0200
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 7167142
+ * @summary Warn if unused .hotspot_rc file is present
+ * @library /testlibrary
+ */
+
+import java.io.PrintWriter;
+import com.oracle.java.testlibrary.*;
+
+public class ConfigFileWarning {
+    public static void main(String[] args) throws Exception {
+        String vmVersion = System.getProperty("java.vm.version");
+        if (vmVersion.toLowerCase().contains("debug") || vmVersion.toLowerCase().contains("jvmg")) {
+            System.out.println("Skip on debug builds since we'll always read the file there");
+            return;
+        }
+
+        PrintWriter pw = new PrintWriter(".hotspotrc");
+        pw.println("aa");
+        pw.close();
+
+        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-version");
+        OutputAnalyzer output = new OutputAnalyzer(pb.start());
+        output.shouldContain("warning: .hotspotrc file is present but has been ignored.  Run with -XX:Flags=.hotspotrc to load the file.");
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/runtime/SharedArchiveFile/CdsDifferentObjectAlignment.java	Wed Jun 19 18:13:52 2013 +0200
@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test CdsDifferentObjectAlignment
+ * @summary Testing CDS (class data sharing) using varying object alignment.
+ *          Using different object alignment for each dump/load pair.
+ *          This is a negative test; using  object alignment for loading that
+ *          is different from object alignment for creating a CDS file
+ *          should fail when loading.
+ * @library /testlibrary
+ */
+
+import com.oracle.java.testlibrary.*;
+
+public class CdsDifferentObjectAlignment {
+    public static void main(String[] args) throws Exception {
+        String nativeWordSize = System.getProperty("sun.arch.data.model");
+        if (!Platform.is64bit()) {
+            System.out.println("ObjectAlignmentInBytes for CDS is only " +
+                "supported on 64bit platforms; this plaform is " +
+                nativeWordSize);
+            System.out.println("Skipping the test");
+        } else {
+            createAndLoadSharedArchive(16, 64);
+            createAndLoadSharedArchive(64, 32);
+        }
+    }
+
+
+    // Parameters are object alignment expressed in bytes
+    private static void
+    createAndLoadSharedArchive(int createAlignment, int loadAlignment)
+    throws Exception {
+        String createAlignmentArgument = "-XX:ObjectAlignmentInBytes=" +
+            createAlignment;
+        String loadAlignmentArgument = "-XX:ObjectAlignmentInBytes=" +
+            loadAlignment;
+
+        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
+            "-XX:+UnlockDiagnosticVMOptions",
+            "-XX:SharedArchiveFile=./sample.jsa",
+            "-Xshare:dump",
+            createAlignmentArgument);
+
+        OutputAnalyzer output = new OutputAnalyzer(pb.start());
+        output.shouldContain("Loading classes to share");
+        output.shouldHaveExitValue(0);
+
+        pb = ProcessTools.createJavaProcessBuilder(
+            "-XX:+UnlockDiagnosticVMOptions",
+            "-XX:SharedArchiveFile=./sample.jsa",
+            "-Xshare:on",
+            loadAlignmentArgument,
+            "-version");
+
+        output = new OutputAnalyzer(pb.start());
+        String expectedErrorMsg =
+            String.format(
+            "The shared archive file's ObjectAlignmentInBytes of %d " +
+            "does not equal the current ObjectAlignmentInBytes of %d",
+            createAlignment,
+            loadAlignment);
+
+        output.shouldContain(expectedErrorMsg);
+        output.shouldHaveExitValue(1);
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/runtime/SharedArchiveFile/CdsSameObjectAlignment.java	Wed Jun 19 18:13:52 2013 +0200
@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test CdsSameObjectAlignment
+ * @summary Testing CDS (class data sharing) using varying object alignment.
+ *          Using same object alignment for each dump/load pair
+ * @library /testlibrary
+ */
+
+import com.oracle.java.testlibrary.*;
+
+public class CdsSameObjectAlignment {
+    public static void main(String[] args) throws Exception {
+        String nativeWordSize = System.getProperty("sun.arch.data.model");
+        if (!Platform.is64bit()) {
+            System.out.println("ObjectAlignmentInBytes for CDS is only " +
+                "supported on 64bit platforms; this plaform is " +
+                nativeWordSize);
+            System.out.println("Skipping the test");
+        } else {
+            dumpAndLoadSharedArchive(8);
+            dumpAndLoadSharedArchive(16);
+            dumpAndLoadSharedArchive(32);
+            dumpAndLoadSharedArchive(64);
+        }
+    }
+
+    private static void
+    dumpAndLoadSharedArchive(int objectAlignmentInBytes) throws Exception {
+        String objectAlignmentArg = "-XX:ObjectAlignmentInBytes="
+            + objectAlignmentInBytes;
+        System.out.println("dumpAndLoadSharedArchive(): objectAlignmentInBytes = "
+            + objectAlignmentInBytes);
+
+        // create shared archive
+        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
+            "-XX:+UnlockDiagnosticVMOptions",
+            "-XX:SharedArchiveFile=./sample.jsa",
+            "-Xshare:dump",
+            objectAlignmentArg);
+
+        OutputAnalyzer output = new OutputAnalyzer(pb.start());
+        output.shouldContain("Loading classes to share");
+        output.shouldHaveExitValue(0);
+
+
+        // run using the shared archive
+        pb = ProcessTools.createJavaProcessBuilder(
+            "-XX:+UnlockDiagnosticVMOptions",
+            "-XX:SharedArchiveFile=./sample.jsa",
+            "-Xshare:on",
+            objectAlignmentArg,
+            "-version");
+
+        output = new OutputAnalyzer(pb.start());
+
+        try {
+            output.shouldContain("sharing");
+            output.shouldHaveExitValue(0);
+        } catch (RuntimeException e) {
+            // CDS uses absolute addresses for performance.
+            // It will try to reserve memory at a specific address;
+            // there is a chance such reservation will fail
+            // If it does, it is NOT considered a failure of the feature,
+            // rather a possible expected outcome, though not likely
+            output.shouldContain(
+                "Unable to reserve shared space at required address");
+            output.shouldHaveExitValue(1);
+        }
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/serviceability/threads/TestFalseDeadLock.java	Wed Jun 19 18:13:52 2013 +0200
@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import java.lang.management.ManagementFactory;
+import java.lang.management.ThreadMXBean;
+import java.util.Random;
+
+/*
+ * @test
+ * @bug 8016304
+ * @summary Make sure no deadlock is reported for this program which has no deadlocks.
+ * @run main/othervm TestFalseDeadLock
+ */
+
+/*
+ * This test will not provoke the bug every time it is run since the bug is intermittent.
+ * The test has a fixed running time of 5 seconds.
+ */
+
+public class TestFalseDeadLock {
+    private static ThreadMXBean bean;
+    private static volatile boolean running = true;
+    private static volatile boolean found = false;
+
+    public static void main(String[] args) throws Exception {
+        bean = ManagementFactory.getThreadMXBean();
+        Thread[] threads = new Thread[500];
+        for (int i = 0; i < threads.length; i++) {
+            Test t = new Test();
+            threads[i] = new Thread(t);
+            threads[i].start();
+        }
+        try {
+            Thread.sleep(5000);
+        } catch (InterruptedException ex) {
+        }
+        running = false;
+        for (Thread t : threads) {
+            t.join();
+        }
+        if (found) {
+            throw new Exception("Deadlock reported, but there is no deadlock.");
+        }
+    }
+
+    public static class Test implements Runnable {
+        public void run() {
+            Random r = new Random();
+            while (running) {
+                try {
+                    synchronized (this) {
+                        wait(r.nextInt(1000) + 1);
+                    }
+                } catch (InterruptedException ex) {
+                }
+                recurse(2000);
+            }
+            if (bean.findDeadlockedThreads() != null) {
+                System.out.println("FOUND!");
+                found = true;
+            }
+        }
+
+        private void recurse(int i) {
+            if (!running) {
+                // It is important for the test to call println here
+                // since there are locks inside that path.
+                System.out.println("Hullo");
+            }
+            else if (i > 0) {
+                recurse(i - 1);
+            }
+        }
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/testlibrary/com/oracle/java/testlibrary/Platform.java	Wed Jun 19 18:13:52 2013 +0200
@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package com.oracle.java.testlibrary;
+
+public class Platform {
+  private static final String osName = System.getProperty("os.name");
+  private static final String dataModel = System.getProperty("sun.arch.data.model");
+  private static final String vmVersion = System.getProperty("java.vm.version");
+
+  public static boolean is64bit() {
+    return dataModel.equals("64");
+  }
+
+  public static boolean isSolaris() {
+    return osName.toLowerCase().startsWith("sunos");
+  }
+
+  public static boolean isWindows() {
+    return osName.toLowerCase().startsWith("win");
+  }
+
+  public static boolean isOSX() {
+    return osName.toLowerCase().startsWith("mac");
+  }
+
+  public static boolean isLinux() {
+    return osName.toLowerCase().startsWith("linux");
+  }
+
+  public static String getOsName() {
+    return osName;
+  }
+
+  public static boolean isDebugBuild() {
+    return vmVersion.toLowerCase().contains("debug");
+  }
+
+  public static String getVMVersion() {
+    return vmVersion;
+  }
+}
--- a/test/testlibrary/com/oracle/java/testlibrary/ProcessTools.java	Fri Jun 14 07:27:22 2013 -0700
+++ b/test/testlibrary/com/oracle/java/testlibrary/ProcessTools.java	Wed Jun 19 18:13:52 2013 +0200
@@ -112,10 +112,8 @@
    * @return String[] with platform specific arguments, empty if there are none
    */
   public static String[] getPlatformSpecificVMArgs() {
-    String osName = System.getProperty("os.name");
-    String dataModel = System.getProperty("sun.arch.data.model");
 
-    if (osName.equals("SunOS") && dataModel.equals("64")) {
+    if (Platform.is64bit() && Platform.isSolaris()) {
       return new String[] { "-d64" };
     }