changeset 4378:6574f999e0cf

Merge
author dcubed
date Sat, 23 Mar 2013 22:35:02 -0700
parents 59a41e1357ab 14509df4cd63
children 9c8e53c7bed0
files src/share/vm/memory/metaspace.cpp
diffstat 25 files changed, 305 insertions(+), 80 deletions(-) [+]
line wrap: on
line diff
--- a/src/os/linux/vm/os_linux.cpp	Sat Mar 23 10:06:34 2013 -0700
+++ b/src/os/linux/vm/os_linux.cpp	Sat Mar 23 22:35:02 2013 -0700
@@ -1811,13 +1811,15 @@
 class VM_LinuxDllLoad: public VM_Operation {
  private:
   const char *_filename;
+  char *_ebuf;
+  int _ebuflen;
   void *_lib;
  public:
-  VM_LinuxDllLoad(const char *fn) :
-    _filename(fn), _lib(NULL) {}
+  VM_LinuxDllLoad(const char *fn, char *ebuf, int ebuflen) :
+    _filename(fn), _ebuf(ebuf), _ebuflen(ebuflen), _lib(NULL) {}
   VMOp_Type type() const { return VMOp_LinuxDllLoad; }
   void doit() {
-    _lib = os::Linux::dll_load_inner(_filename);
+    _lib = os::Linux::dll_load_in_vmthread(_filename, _ebuf, _ebuflen);
     os::Linux::_stack_is_executable = true;
   }
   void* loaded_library() { return _lib; }
@@ -1865,13 +1867,13 @@
             // This is for the case where the DLL has an static
             // constructor function that executes JNI code. We cannot
             // load such DLLs in the VMThread.
-            result = ::dlopen(filename, RTLD_LAZY);
+            result = os::Linux::dlopen_helper(filename, ebuf, ebuflen);
           }
 
           ThreadInVMfromNative tiv(jt);
           debug_only(VMNativeEntryWrapper vew;)
 
-          VM_LinuxDllLoad op(filename);
+          VM_LinuxDllLoad op(filename, ebuf, ebuflen);
           VMThread::execute(&op);
           if (LoadExecStackDllInVMThread) {
             result = op.loaded_library();
@@ -1883,7 +1885,7 @@
   }
 
   if (!load_attempted) {
-    result = ::dlopen(filename, RTLD_LAZY);
+    result = os::Linux::dlopen_helper(filename, ebuf, ebuflen);
   }
 
   if (result != NULL) {
@@ -1892,11 +1894,6 @@
   }
 
   Elf32_Ehdr elf_head;
-
-  // Read system error message into ebuf
-  // It may or may not be overwritten below
-  ::strncpy(ebuf, ::dlerror(), ebuflen-1);
-  ebuf[ebuflen-1]='\0';
   int diag_msg_max_length=ebuflen-strlen(ebuf);
   char* diag_msg_buf=ebuf+strlen(ebuf);
 
@@ -2039,10 +2036,19 @@
   return NULL;
 }
 
-void * os::Linux::dll_load_inner(const char *filename) {
+void * os::Linux::dlopen_helper(const char *filename, char *ebuf, int ebuflen) {
+  void * result = ::dlopen(filename, RTLD_LAZY);
+  if (result == NULL) {
+    ::strncpy(ebuf, ::dlerror(), ebuflen - 1);
+    ebuf[ebuflen-1] = '\0';
+  }
+  return result;
+}
+
+void * os::Linux::dll_load_in_vmthread(const char *filename, char *ebuf, int ebuflen) {
   void * result = NULL;
   if (LoadExecStackDllInVMThread) {
-    result = ::dlopen(filename, RTLD_LAZY);
+    result = dlopen_helper(filename, ebuf, ebuflen);
   }
 
   // Since 7019808, libjvm.so is linked with -noexecstack. If the VM loads a
--- a/src/os/linux/vm/os_linux.hpp	Sat Mar 23 10:06:34 2013 -0700
+++ b/src/os/linux/vm/os_linux.hpp	Sat Mar 23 22:35:02 2013 -0700
@@ -95,7 +95,8 @@
 
  public:
   static bool _stack_is_executable;
-  static void *dll_load_inner(const char *name);
+  static void *dlopen_helper(const char *name, char *ebuf, int ebuflen);
+  static void *dll_load_in_vmthread(const char *name, char *ebuf, int ebuflen);
 
   static void init_thread_fpu_state();
   static int  get_fpu_control_word();
--- a/src/os_cpu/bsd_x86/vm/globals_bsd_x86.hpp	Sat Mar 23 10:06:34 2013 -0700
+++ b/src/os_cpu/bsd_x86/vm/globals_bsd_x86.hpp	Sat Mar 23 22:35:02 2013 -0700
@@ -46,7 +46,7 @@
 
 define_pd_global(uintx, JVMInvokeMethodSlack,    8192);
 
-// Used on 64 bit platforms for UseCompressedOops base address or CDS
+// Used on 64 bit platforms for UseCompressedOops base address
 define_pd_global(uintx, HeapBaseMinAddress,      2*G);
 
 #endif // OS_CPU_BSD_X86_VM_GLOBALS_BSD_X86_HPP
--- a/src/os_cpu/bsd_zero/vm/globals_bsd_zero.hpp	Sat Mar 23 10:06:34 2013 -0700
+++ b/src/os_cpu/bsd_zero/vm/globals_bsd_zero.hpp	Sat Mar 23 22:35:02 2013 -0700
@@ -41,7 +41,7 @@
 define_pd_global(intx,  CompilerThreadStackSize, 0);
 define_pd_global(uintx, JVMInvokeMethodSlack,    8192);
 
-// Used on 64 bit platforms for UseCompressedOops base address or CDS
+// Used on 64 bit platforms for UseCompressedOops base address
 define_pd_global(uintx, HeapBaseMinAddress,      2*G);
 
 #endif // OS_CPU_BSD_ZERO_VM_GLOBALS_BSD_ZERO_HPP
--- a/src/os_cpu/linux_sparc/vm/globals_linux_sparc.hpp	Sat Mar 23 10:06:34 2013 -0700
+++ b/src/os_cpu/linux_sparc/vm/globals_linux_sparc.hpp	Sat Mar 23 22:35:02 2013 -0700
@@ -33,7 +33,7 @@
 define_pd_global(uintx, JVMInvokeMethodSlack,    12288);
 define_pd_global(intx, CompilerThreadStackSize,  0);
 
-// Used on 64 bit platforms for UseCompressedOops base address or CDS
+// Used on 64 bit platforms for UseCompressedOops base address
 define_pd_global(uintx, HeapBaseMinAddress,      CONST64(4)*G);
 
 #endif // OS_CPU_LINUX_SPARC_VM_GLOBALS_LINUX_SPARC_HPP
--- a/src/os_cpu/linux_x86/vm/globals_linux_x86.hpp	Sat Mar 23 10:06:34 2013 -0700
+++ b/src/os_cpu/linux_x86/vm/globals_linux_x86.hpp	Sat Mar 23 22:35:02 2013 -0700
@@ -44,7 +44,7 @@
 
 define_pd_global(uintx,JVMInvokeMethodSlack,     8192);
 
-// Used on 64 bit platforms for UseCompressedOops base address or CDS
+// Used on 64 bit platforms for UseCompressedOops base address
 define_pd_global(uintx,HeapBaseMinAddress,       2*G);
 
 #endif // OS_CPU_LINUX_X86_VM_GLOBALS_LINUX_X86_HPP
--- a/src/os_cpu/linux_zero/vm/globals_linux_zero.hpp	Sat Mar 23 10:06:34 2013 -0700
+++ b/src/os_cpu/linux_zero/vm/globals_linux_zero.hpp	Sat Mar 23 22:35:02 2013 -0700
@@ -41,7 +41,7 @@
 define_pd_global(intx,  CompilerThreadStackSize, 0);
 define_pd_global(uintx, JVMInvokeMethodSlack,    8192);
 
-// Used on 64 bit platforms for UseCompressedOops base address or CDS
+// Used on 64 bit platforms for UseCompressedOops base address
 define_pd_global(uintx, HeapBaseMinAddress,      2*G);
 
 #endif // OS_CPU_LINUX_ZERO_VM_GLOBALS_LINUX_ZERO_HPP
--- a/src/os_cpu/solaris_sparc/vm/globals_solaris_sparc.hpp	Sat Mar 23 10:06:34 2013 -0700
+++ b/src/os_cpu/solaris_sparc/vm/globals_solaris_sparc.hpp	Sat Mar 23 22:35:02 2013 -0700
@@ -33,7 +33,7 @@
 define_pd_global(uintx, JVMInvokeMethodSlack,    12288);
 define_pd_global(intx, CompilerThreadStackSize,  0);
 
-// Used on 64 bit platforms for UseCompressedOops base address or CDS
+// Used on 64 bit platforms for UseCompressedOops base address
 #ifdef _LP64
 define_pd_global(uintx, HeapBaseMinAddress,      CONST64(4)*G);
 #else
--- a/src/os_cpu/solaris_x86/vm/globals_solaris_x86.hpp	Sat Mar 23 10:06:34 2013 -0700
+++ b/src/os_cpu/solaris_x86/vm/globals_solaris_x86.hpp	Sat Mar 23 22:35:02 2013 -0700
@@ -43,7 +43,7 @@
 
 define_pd_global(intx, CompilerThreadStackSize,  0);
 
-// Used on 64 bit platforms for UseCompressedOops base address or CDS
+// Used on 64 bit platforms for UseCompressedOops base address
 define_pd_global(uintx,HeapBaseMinAddress,       256*M);
 
 #endif // OS_CPU_SOLARIS_X86_VM_GLOBALS_SOLARIS_X86_HPP
--- a/src/os_cpu/windows_x86/vm/globals_windows_x86.hpp	Sat Mar 23 10:06:34 2013 -0700
+++ b/src/os_cpu/windows_x86/vm/globals_windows_x86.hpp	Sat Mar 23 22:35:02 2013 -0700
@@ -45,7 +45,7 @@
 
 define_pd_global(uintx, JVMInvokeMethodSlack,    8192);
 
-// Used on 64 bit platforms for UseCompressedOops base address or CDS
+// Used on 64 bit platforms for UseCompressedOops base address
 define_pd_global(uintx, HeapBaseMinAddress,      2*G);
 
 #endif // OS_CPU_WINDOWS_X86_VM_GLOBALS_WINDOWS_X86_HPP
--- a/src/share/vm/memory/filemap.cpp	Sat Mar 23 10:06:34 2013 -0700
+++ b/src/share/vm/memory/filemap.cpp	Sat Mar 23 22:35:02 2013 -0700
@@ -372,7 +372,7 @@
   // other reserved memory (like the code cache).
   ReservedSpace rs(size, alignment, false, requested_addr);
   if (!rs.is_reserved()) {
-    fail_continue(err_msg("Unable to reserved shared space at required address " INTPTR_FORMAT, requested_addr));
+    fail_continue(err_msg("Unable to reserve shared space at required address " INTPTR_FORMAT, requested_addr));
     return rs;
   }
   // the reserved virtual memory is for mapping class data sharing archive
--- a/src/share/vm/memory/metaspace.cpp	Sat Mar 23 10:06:34 2013 -0700
+++ b/src/share/vm/memory/metaspace.cpp	Sat Mar 23 22:35:02 2013 -0700
@@ -337,27 +337,16 @@
   // align up to vm allocation granularity
   byte_size = align_size_up(byte_size, os::vm_allocation_granularity());
 
-  // This allocates memory with mmap.  For DumpSharedspaces, allocate the
-  // space at low memory so that other shared images don't conflict.
-  // This is the same address as memory needed for UseCompressedOops but
-  // compressed oops don't work with CDS (offsets in metadata are wrong), so
-  // borrow the same address.
+  // This allocates memory with mmap.  For DumpSharedspaces, try to reserve
+  // configurable address, generally at the top of the Java heap so other
+  // memory addresses don't conflict.
   if (DumpSharedSpaces) {
-    char* shared_base = (char*)HeapBaseMinAddress;
+    char* shared_base = (char*)SharedBaseAddress;
     _rs = ReservedSpace(byte_size, 0, false, shared_base, 0);
     if (_rs.is_reserved()) {
-      assert(_rs.base() == shared_base, "should match");
+      assert(shared_base == 0 || _rs.base() == shared_base, "should match");
     } else {
-      // If we are dumping the heap, then allocate a wasted block of address
-      // space in order to push the heap to a lower address.  This extra
-      // address range allows for other (or larger) libraries to be loaded
-      // without them occupying the space required for the shared spaces.
-      uintx reserved = 0;
-      uintx block_size = 64*1024*1024;
-      while (reserved < SharedDummyBlockSize) {
-        char* dummy = os::reserve_memory(block_size);
-        reserved += block_size;
-      }
+      // Get a mmap region anywhere if the SharedBaseAddress fails.
       _rs = ReservedSpace(byte_size);
     }
     MetaspaceShared::set_shared_rs(&_rs);
--- a/src/share/vm/prims/jvm.cpp	Sat Mar 23 10:06:34 2013 -0700
+++ b/src/share/vm/prims/jvm.cpp	Sat Mar 23 22:35:02 2013 -0700
@@ -1722,7 +1722,7 @@
   int i;
   for (i = 0; i < methods_length; i++) {
     methodHandle method(THREAD, methods->at(i));
-    if (!method->is_initializer()) {
+    if (!method->is_initializer() && !method->is_overpass()) {
       if (!publicOnly || method->is_public()) {
         ++num_methods;
       }
@@ -1736,7 +1736,7 @@
   int out_idx = 0;
   for (i = 0; i < methods_length; i++) {
     methodHandle method(THREAD, methods->at(i));
-    if (!method->is_initializer()) {
+    if (!method->is_initializer() && !method->is_overpass()) {
       if (!publicOnly || method->is_public()) {
         oop m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL);
         result->obj_at_put(out_idx, m);
--- a/src/share/vm/runtime/globals.hpp	Sat Mar 23 10:06:34 2013 -0700
+++ b/src/share/vm/runtime/globals.hpp	Sat Mar 23 22:35:02 2013 -0700
@@ -869,6 +869,11 @@
   diagnostic(bool, PrintNMTStatistics, false,                               \
           "Print native memory tracking summary data if it is on")          \
                                                                             \
+  diagnostic(bool, AutoShutdownNMT, true,                                   \
+          "Automatically shutdown native memory tracking under stress "     \
+          "situation. When set to false, native memory tracking tries to "  \
+          "stay alive at the expense of JVM performance")                   \
+                                                                            \
   diagnostic(bool, LogCompilation, false,                                   \
           "Log compilation activity in detail to hotspot.log or LogFile")   \
                                                                             \
@@ -2905,6 +2910,10 @@
           "if non-zero, start verifying C heap after Nth call to "          \
           "malloc/realloc/free")                                            \
                                                                             \
+  diagnostic(uintx, MallocMaxTestWords,     0,                              \
+          "if non-zero, max # of Words that malloc/realloc can allocate "   \
+          "(for testing only)")                                             \
+                                                                            \
   product(intx, TypeProfileWidth,     2,                                    \
           "number of receiver types to record in call/cast profile")        \
                                                                             \
@@ -3569,8 +3578,9 @@
   product(uintx, SharedMiscCodeSize,    120*K,                              \
           "Size of the shared miscellaneous code area (in bytes)")          \
                                                                             \
-  product(uintx, SharedDummyBlockSize, 0,                                   \
-          "Size of dummy block used to shift heap addresses (in bytes)")    \
+  product(uintx, SharedBaseAddress, LP64_ONLY(32*G)                         \
+          NOT_LP64(LINUX_ONLY(2*G) NOT_LINUX(0)),                           \
+          "Address to allocate shared memory region for class data")        \
                                                                             \
   diagnostic(bool, EnableInvokeDynamic, true,                               \
           "support JSR 292 (method handles, invokedynamic, "                \
--- a/src/share/vm/runtime/os.cpp	Sat Mar 23 10:06:34 2013 -0700
+++ b/src/share/vm/runtime/os.cpp	Sat Mar 23 22:35:02 2013 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 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
@@ -80,6 +80,8 @@
 julong os::free_bytes = 0;          // # of bytes freed
 #endif
 
+static juint cur_malloc_words = 0;  // current size for MallocMaxTestWords
+
 void os_init_globals() {
   // Called from init_globals().
   // See Threads::create_vm() in thread.cpp, and init.cpp.
@@ -570,6 +572,26 @@
 }
 #endif
 
+//
+// This function supports testing of the malloc out of memory
+// condition without really running the system out of memory.
+//
+static u_char* testMalloc(size_t alloc_size) {
+  assert(MallocMaxTestWords > 0, "sanity check");
+
+  if ((cur_malloc_words + (alloc_size / BytesPerWord)) > MallocMaxTestWords) {
+    return NULL;
+  }
+
+  u_char* ptr = (u_char*)::malloc(alloc_size);
+
+  if (ptr != NULL) {
+    Atomic::add(((jint) (alloc_size / BytesPerWord)),
+                (volatile jint *) &cur_malloc_words);
+  }
+  return ptr;
+}
+
 void* os::malloc(size_t size, MEMFLAGS memflags, address caller) {
   NOT_PRODUCT(inc_stat_counter(&num_mallocs, 1));
   NOT_PRODUCT(inc_stat_counter(&alloc_bytes, size));
@@ -579,11 +601,22 @@
     // if NULL is returned the calling functions assume out of memory.
     size = 1;
   }
-  if (size > size + space_before + space_after) { // Check for rollover.
+
+  const size_t alloc_size = size + space_before + space_after;
+
+  if (size > alloc_size) { // Check for rollover.
     return NULL;
   }
+
   NOT_PRODUCT(if (MallocVerifyInterval > 0) check_heap());
-  u_char* ptr = (u_char*)::malloc(size + space_before + space_after);
+
+  u_char* ptr;
+
+  if (MallocMaxTestWords > 0) {
+    ptr = testMalloc(alloc_size);
+  } else {
+    ptr = (u_char*)::malloc(alloc_size);
+  }
 
 #ifdef ASSERT
   if (ptr == NULL) return NULL;
--- a/src/share/vm/services/memTracker.cpp	Sat Mar 23 10:06:34 2013 -0700
+++ b/src/share/vm/services/memTracker.cpp	Sat Mar 23 22:35:02 2013 -0700
@@ -68,6 +68,7 @@
 volatile jint                   MemTracker::_pooled_recorder_count = 0;
 volatile unsigned long          MemTracker::_processing_generation = 0;
 volatile bool                   MemTracker::_worker_thread_idle = false;
+volatile bool                   MemTracker::_slowdown_calling_thread = false;
 debug_only(intx                 MemTracker::_main_thread_tid = 0;)
 NOT_PRODUCT(volatile jint       MemTracker::_pending_recorder_count = 0;)
 
@@ -364,6 +365,12 @@
     }
 
     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();
@@ -442,6 +449,7 @@
 #define MAX_SAFEPOINTS_TO_SKIP     128
 #define SAFE_SEQUENCE_THRESHOLD    30
 #define HIGH_GENERATION_THRESHOLD  60
+#define MAX_RECORDER_THREAD_RATIO  30
 
 void MemTracker::sync() {
   assert(_tracking_level > NMT_off, "NMT is not enabled");
@@ -487,6 +495,13 @@
         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());
--- a/src/share/vm/services/memTracker.hpp	Sat Mar 23 10:06:34 2013 -0700
+++ b/src/share/vm/services/memTracker.hpp	Sat Mar 23 22:35:02 2013 -0700
@@ -84,6 +84,7 @@
    static inline bool baseline() { return false; }
    static inline bool has_baseline() { return false; }
 
+   static inline void set_autoShutdown(bool value) { }
    static void shutdown(ShutdownReason reason) { }
    static inline bool shutdown_in_progress() {  }
    static bool print_memory_usage(BaselineOutputer& out, size_t unit,
@@ -238,6 +239,16 @@
   // if native memory tracking tracks callsite
   static inline bool track_callsite() { return _tracking_level == NMT_detail; }
 
+  // NMT automatically shuts itself down under extreme situation by default.
+  // When the value is set to false,  NMT will try its best to stay alive,
+  // even it has to slow down VM.
+  static inline void set_autoShutdown(bool value) {
+    AutoShutdownNMT = value;
+    if (AutoShutdownNMT && _slowdown_calling_thread) {
+      _slowdown_calling_thread = false;
+    }
+  }
+
   // shutdown native memory tracking capability. Native memory tracking
   // can be shutdown by VM when it encounters low memory scenarios.
   // Memory tracker should gracefully shutdown itself, and preserve the
@@ -507,6 +518,10 @@
   // although NMT is still procesing current generation, but
   // there is not more recorder to process, set idle state
   static volatile bool             _worker_thread_idle;
+
+  // if NMT should slow down calling thread to allow
+  // worker thread to catch up
+  static volatile bool             _slowdown_calling_thread;
 };
 
 #endif // !INCLUDE_NMT
--- a/src/share/vm/services/nmtDCmd.cpp	Sat Mar 23 10:06:34 2013 -0700
+++ b/src/share/vm/services/nmtDCmd.cpp	Sat Mar 23 22:35:02 2013 -0700
@@ -49,6 +49,9 @@
   _shutdown("shutdown", "request runtime to shutdown itself and free the " \
             "memory used by runtime.",
             "BOOLEAN", false, "false"),
+  _auto_shutdown("autoShutdown", "automatically shutdown itself under "    \
+            "stress situation",
+            "BOOLEAN", true, "true"),
 #ifndef PRODUCT
   _debug("debug", "print tracker statistics. Debug only, not thread safe", \
             "BOOLEAN", false, "false"),
@@ -61,6 +64,7 @@
   _dcmdparser.add_dcmd_option(&_summary_diff);
   _dcmdparser.add_dcmd_option(&_detail_diff);
   _dcmdparser.add_dcmd_option(&_shutdown);
+  _dcmdparser.add_dcmd_option(&_auto_shutdown);
 #ifndef PRODUCT
   _dcmdparser.add_dcmd_option(&_debug);
 #endif
@@ -84,17 +88,19 @@
   }
 
   int nopt = 0;
-  if(_summary.is_set() && _summary.value()) { ++nopt; }
-  if(_detail.is_set() && _detail.value()) { ++nopt; }
-  if(_baseline.is_set() && _baseline.value()) { ++nopt; }
-  if(_summary_diff.is_set() && _summary_diff.value()) { ++nopt; }
-  if(_detail_diff.is_set() && _detail_diff.value()) { ++nopt; }
-  if(_shutdown.is_set() && _shutdown.value()) { ++nopt; }
+  if (_summary.is_set() && _summary.value()) { ++nopt; }
+  if (_detail.is_set() && _detail.value()) { ++nopt; }
+  if (_baseline.is_set() && _baseline.value()) { ++nopt; }
+  if (_summary_diff.is_set() && _summary_diff.value()) { ++nopt; }
+  if (_detail_diff.is_set() && _detail_diff.value()) { ++nopt; }
+  if (_shutdown.is_set() && _shutdown.value()) { ++nopt; }
+  if (_auto_shutdown.is_set()) { ++nopt; }
+
 #ifndef PRODUCT
-  if(_debug.is_set() && _debug.value()) { ++nopt; }
+  if (_debug.is_set() && _debug.value()) { ++nopt; }
 #endif
 
-  if(nopt > 1) {
+  if (nopt > 1) {
       output()->print_cr("At most one of the following option can be specified: " \
         "summary, detail, baseline, summary.diff, detail.diff, shutdown"
 #ifndef PRODUCT
@@ -156,6 +162,8 @@
     MemTracker::shutdown(MemTracker::NMT_shutdown_user);
     output()->print_cr("Shutdown is in progress, it will take a few moments to " \
       "completely shutdown");
+  } else if (_auto_shutdown.is_set()) {
+    MemTracker::set_autoShutdown(_auto_shutdown.value());
   } else {
     ShouldNotReachHere();
     output()->print_cr("Unknown command");
--- a/src/share/vm/services/nmtDCmd.hpp	Sat Mar 23 10:06:34 2013 -0700
+++ b/src/share/vm/services/nmtDCmd.hpp	Sat Mar 23 22:35:02 2013 -0700
@@ -39,6 +39,7 @@
   DCmdArgument<bool>  _summary_diff;
   DCmdArgument<bool>  _detail_diff;
   DCmdArgument<bool>  _shutdown;
+  DCmdArgument<bool>  _auto_shutdown;
 #ifndef PRODUCT
   DCmdArgument<bool>  _debug;
 #endif
--- a/test/runtime/6878713/Test6878713.sh	Sat Mar 23 10:06:34 2013 -0700
+++ b/test/runtime/6878713/Test6878713.sh	Sat Mar 23 22:35:02 2013 -0700
@@ -1,10 +1,38 @@
 #!/bin/sh
 
+# 
+#  Copyright (c) 2011, 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 6878713
+## @bug 7030610
+## @bug 7037122
+## @bug 7123945
 ## @summary Verifier heap corruption, relating to backward jsrs
-## @run shell/timeout=120 Test6878713.sh
+## @run shell Test6878713.sh
 ##
 
 if [ "${TESTSRC}" = "" ]
@@ -49,23 +77,98 @@
     ;;
 esac
 
-JEMMYPATH=${CPAPPEND}
-CLASSPATH=.${PS}${TESTCLASSES}${PS}${JEMMYPATH} ; export CLASSPATH
-
-THIS_DIR=`pwd`
+CLASSPATH=.${PS}${TESTCLASSES} ; export CLASSPATH
 
 ${TESTJAVA}${FS}bin${FS}java ${TESTVMOPTS} -version
 
-${TESTJAVA}${FS}bin${FS}jar xvf ${TESTSRC}${FS}testcase.jar
+TARGET_CLASS=OOMCrashClass1960_2
 
-${TESTJAVA}${FS}bin${FS}java ${TESTVMOPTS} OOMCrashClass1960_2 > test.out 2>&1
+echo "INFO: extracting the target class."
+${TESTJAVA}${FS}bin${FS}jar xvf \
+    ${TESTSRC}${FS}testcase.jar ${TARGET_CLASS}.class
 
-if [ -s core -o -s "hs_*.log" ]
-then
-    cat hs*.log
-    echo "Test Failed"
-    exit 1
+# remove any hs_err_pid that might exist here
+rm -f hs_err_pid*.log
+
+echo "INFO: checking for 32-bit versus 64-bit VM."
+${TESTJAVA}${FS}bin${FS}java ${TESTVMOPTS} -version 2>&1 \
+    | grep "64-Bit [^ ][^ ]* VM" > /dev/null 2>&1
+status="$?"
+if [ "$status" = 0 ]; then
+    echo "INFO: testing a 64-bit VM."
+    is_64_bit=true
 else
-    echo "Test Passed"
-    exit 0
+    echo "INFO: testing a 32-bit VM."
 fi
+
+if [ "$is_64_bit" = true ]; then
+    # limit is 768MB in 8-byte words (1024 * 1024 * 768 / 8) == 100663296
+    MALLOC_MAX=100663296
+else
+    # limit is 768MB in 4-byte words (1024 * 1024 * 768 / 4) == 201326592
+    MALLOC_MAX=201326592
+fi
+echo "INFO: MALLOC_MAX=$MALLOC_MAX"
+
+echo "INFO: executing the target class."
+# -XX:+PrintCommandLineFlags for debugging purposes
+# -XX:+IgnoreUnrecognizedVMOptions so test will run on a VM without
+#     the new -XX:MallocMaxTestWords option
+# -XX:+UnlockDiagnosticVMOptions so we can use -XX:MallocMaxTestWords
+# -XX:MallocMaxTestWords limits malloc to $MALLOC_MAX
+${TESTJAVA}${FS}bin${FS}java \
+    -XX:+PrintCommandLineFlags \
+    -XX:+IgnoreUnrecognizedVMOptions \
+    -XX:+UnlockDiagnosticVMOptions \
+    -XX:MallocMaxTestWords=$MALLOC_MAX \
+    ${TESTVMOPTS} ${TARGET_CLASS} > test.out 2>&1
+
+echo "INFO: begin contents of test.out:"
+cat test.out
+echo "INFO: end contents of test.out."
+
+echo "INFO: checking for memory allocation error message."
+# We are looking for this specific memory allocation failure mesg so
+# we know we exercised the right allocation path with the test class:
+MESG1="Native memory allocation (malloc) failed to allocate 25696531[0-9][0-9] bytes"
+grep "$MESG1" test.out
+status="$?"
+if [ "$status" = 0 ]; then
+    echo "INFO: found expected memory allocation error message."
+else
+    echo "INFO: did not find expected memory allocation error message."
+
+    # If we didn't find MESG1 above, then there are several scenarios:
+    # 1) -XX:MallocMaxTestWords is not supported by the current VM and we
+    #    didn't fail TARGET_CLASS's memory allocation attempt; instead
+    #    we failed to find TARGET_CLASS's main() method. The TARGET_CLASS
+    #    is designed to provoke a memory allocation failure during class
+    #    loading; we actually don't care about running the class which is
+    #    why it doesn't have a main() method.
+    # 2) we failed a memory allocation, but not the one we were looking
+    #    so it might be that TARGET_CLASS no longer tickles the same
+    #    memory allocation code path
+    # 3) TARGET_CLASS reproduces the failure mode (SIGSEGV) fixed by
+    #    6878713 because the test is running on a pre-fix VM.
+    echo "INFO: checking for no main() method message."
+    MESG2="Error: Main method not found in class"
+    grep "$MESG2" test.out
+    status="$?"
+    if [ "$status" = 0 ]; then
+        echo "INFO: found no main() method message."
+    else
+        echo "FAIL: did not find no main() method message."
+        # status is non-zero for exit below
+
+        if [ -s hs_err_pid*.log ]; then
+            echo "INFO: begin contents of hs_err_pid file:"
+            cat hs_err_pid*.log
+            echo "INFO: end contents of hs_err_pid file."
+        fi
+    fi
+fi
+
+if [ "$status" = 0 ]; then
+    echo "PASS: test found one of the expected messages."
+fi
+exit "$status"
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/runtime/8010389/VMThreadDlopen.java	Sat Mar 23 22:35:02 2013 -0700
@@ -0,0 +1,44 @@
+/*
+ * 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.io.File;
+
+/*
+ * @test
+ * @key regression
+ * @bug 8010389
+ * @run main/othervm -Djava.library.path=. VMThreadDlopen
+ */
+
+public class VMThreadDlopen {
+    public static void main(String[] args) throws Exception {
+        File file = new File("libbroken.so");
+        file.createNewFile();
+        try {
+            System.loadLibrary("broken");
+        } catch (UnsatisfiedLinkError e) {
+            e.printStackTrace();
+            // expected
+        }
+    }
+}
--- a/test/runtime/CommandLine/BooleanFlagWithInvalidValue.java	Sat Mar 23 10:06:34 2013 -0700
+++ b/test/runtime/CommandLine/BooleanFlagWithInvalidValue.java	Sat Mar 23 22:35:02 2013 -0700
@@ -33,17 +33,17 @@
 public class BooleanFlagWithInvalidValue {
   public static void main(String[] args) throws Exception {
     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
-        "-XX:+UseLargePages=8", "-version");
+        "-XX:+PrintWarnings=8", "-version");
 
     OutputAnalyzer output = new OutputAnalyzer(pb.start());
-    output.shouldContain("Improperly specified VM option 'UseLargePages=8'");
+    output.shouldContain("Improperly specified VM option 'PrintWarnings=8'");
     output.shouldHaveExitValue(1);
 
     pb = ProcessTools.createJavaProcessBuilder(
-        "-XX:-UseLargePages=8", "-version");
+        "-XX:-PrintWarnings=8", "-version");
 
     output = new OutputAnalyzer(pb.start());
-    output.shouldContain("Improperly specified VM option 'UseLargePages=8'");
+    output.shouldContain("Improperly specified VM option 'PrintWarnings=8'");
     output.shouldHaveExitValue(1);
   }
 }
--- a/test/runtime/CommandLine/FlagWithInvalidValue.java	Sat Mar 23 10:06:34 2013 -0700
+++ b/test/runtime/CommandLine/FlagWithInvalidValue.java	Sat Mar 23 22:35:02 2013 -0700
@@ -33,10 +33,10 @@
 public class FlagWithInvalidValue {
   public static void main(String[] args) throws Exception {
     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
-        "-XX:ObjectAlignmentInBytes=v", "-version");
+        "-XX:MaxRAMFraction=v", "-version");
 
     OutputAnalyzer output = new OutputAnalyzer(pb.start());
-    output.shouldContain("Improperly specified VM option 'ObjectAlignmentInBytes=v'");
+    output.shouldContain("Improperly specified VM option 'MaxRAMFraction=v'");
     output.shouldHaveExitValue(1);
   }
 }
--- a/test/runtime/CommandLine/NonBooleanFlagWithInvalidBooleanPrefix.java	Sat Mar 23 10:06:34 2013 -0700
+++ b/test/runtime/CommandLine/NonBooleanFlagWithInvalidBooleanPrefix.java	Sat Mar 23 22:35:02 2013 -0700
@@ -33,17 +33,17 @@
 public class NonBooleanFlagWithInvalidBooleanPrefix {
   public static void main(String[] args) throws Exception {
     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
-        "-XX:-ObjectAlignmentInBytes=16", "-version");
+        "-XX:-MaxRAMFraction=16", "-version");
 
     OutputAnalyzer output = new OutputAnalyzer(pb.start());
-    output.shouldContain("Unexpected +/- setting in VM option 'ObjectAlignmentInBytes=16'");
+    output.shouldContain("Unexpected +/- setting in VM option 'MaxRAMFraction=16'");
     output.shouldHaveExitValue(1);
 
     pb = ProcessTools.createJavaProcessBuilder(
-        "-XX:+ObjectAlignmentInBytes=16", "-version");
+        "-XX:+MaxRAMFraction=16", "-version");
 
     output = new OutputAnalyzer(pb.start());
-    output.shouldContain("Unexpected +/- setting in VM option 'ObjectAlignmentInBytes=16'");
+    output.shouldContain("Unexpected +/- setting in VM option 'MaxRAMFraction=16'");
     output.shouldHaveExitValue(1);
 
   }
--- a/test/runtime/NMT/BaselineWithParameter.java	Sat Mar 23 10:06:34 2013 -0700
+++ b/test/runtime/NMT/BaselineWithParameter.java	Sat Mar 23 22:35:02 2013 -0700
@@ -43,7 +43,7 @@
 
     // Run 'jcmd <pid> VM.native_memory baseline=false'
     pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "baseline=false"});
-    pb.start();
+    pb.start().waitFor();
 
     // Run 'jcmd <pid> VM.native_memory summary=false'
     pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary=false"});