changeset 4581:d6cf0e0eee29 hs24-b39

Merge
author amurillo
date Fri, 05 Apr 2013 10:32:51 -0700
parents c23596bfe3b8 5c44c9466675
children 21b442e8b756
files make/windows/projectfiles/kernel/Makefile make/windows/projectfiles/kernel/vm.def make/windows/projectfiles/kernel/vm.dsw
diffstat 52 files changed, 874 insertions(+), 317 deletions(-) [+]
line wrap: on
line diff
--- a/make/hotspot_version	Fri Apr 05 09:10:28 2013 -0700
+++ b/make/hotspot_version	Fri Apr 05 10:32:51 2013 -0700
@@ -35,7 +35,7 @@
 
 HS_MAJOR_VER=24
 HS_MINOR_VER=0
-HS_BUILD_NUMBER=38
+HS_BUILD_NUMBER=39
 
 JDK_MAJOR_VER=1
 JDK_MINOR_VER=7
--- a/make/windows/build.make	Fri Apr 05 09:10:28 2013 -0700
+++ b/make/windows/build.make	Fri Apr 05 10:32:51 2013 -0700
@@ -110,8 +110,6 @@
 !endif
 !elseif "$(Variant)" == "tiered"
 VARIANT_TEXT=Tiered
-!elseif "$(Variant)" == "kernel"
-VARIANT_TEXT=Kernel
 !endif
 
 #########################################################################
@@ -198,6 +196,12 @@
 
 # End VERSIONINFO parameters
 
+# if hotspot-only build and/or OPENJDK isn't passed down, need to set OPENJDK
+!ifndef OPENJDK
+!if !exists($(WorkSpace)\src\closed)
+OPENJDK=true
+!endif
+!endif
 
 # We don't support SA on ia64, and we can't
 # build it if we are using a version of Vis Studio
@@ -284,6 +288,7 @@
 	@ echo HS_COMPANY=$(COMPANY_NAME)			>> $@
 	@ echo HS_FILEDESC=$(HS_FILEDESC)			>> $@
 	@ echo HOTSPOT_VM_DISTRO=$(HOTSPOT_VM_DISTRO)		>> $@
+	@ if "$(OPENJDK)" NEQ "" echo OPENJDK=$(OPENJDK)	>> $@
 	@ echo HS_COPYRIGHT=$(HOTSPOT_VM_COPYRIGHT)		>> $@
 	@ echo HS_NAME=$(PRODUCT_NAME) $(JDK_MKTG_VERSION)	>> $@
 	@ echo HS_BUILD_VER=$(HS_BUILD_VER)			>> $@
@@ -310,9 +315,9 @@
 checks: checkVariant checkWorkSpace checkSA
 
 checkVariant:
-	@ if "$(Variant)"=="" echo Need to specify "Variant=[tiered|compiler2|compiler1|kernel|core]" && false
-	@ if "$(Variant)" NEQ "tiered" if "$(Variant)" NEQ "compiler2" if "$(Variant)" NEQ "compiler1" if "$(Variant)" NEQ "kernel" if "$(Variant)" NEQ "core" \
-          echo Need to specify "Variant=[tiered|compiler2|compiler1|kernel|core]" && false
+	@ if "$(Variant)"=="" echo Need to specify "Variant=[tiered|compiler2|compiler1|core]" && false
+	@ if "$(Variant)" NEQ "tiered" if "$(Variant)" NEQ "compiler2" if "$(Variant)" NEQ "compiler1" if "$(Variant)" NEQ "core" \
+          echo Need to specify "Variant=[tiered|compiler2|compiler1|core]" && false
 
 checkWorkSpace:
 	@ if "$(WorkSpace)"=="" echo Need to specify "WorkSpace=..." && false
--- a/make/windows/create.bat	Fri Apr 05 09:10:28 2013 -0700
+++ b/make/windows/create.bat	Fri Apr 05 10:32:51 2013 -0700
@@ -148,7 +148,7 @@
 
 REM This is now safe to do.
 :copyfiles
-for /D %%i in (compiler1, compiler2, tiered, core, kernel) do (
+for /D %%i in (compiler1, compiler2, tiered, core) do (
 if NOT EXIST %HotSpotBuildSpace%\%%i\generated mkdir %HotSpotBuildSpace%\%%i\generated
 copy %HotSpotWorkSpace%\make\windows\projectfiles\%%i\* %HotSpotBuildSpace%\%%i\generated > NUL
 )
@@ -156,7 +156,7 @@
 REM force regneration of ProjectFile
 if exist %ProjectFile% del %ProjectFile%
 
-for /D %%i in (compiler1, compiler2, tiered, core, kernel) do (
+for /D %%i in (compiler1, compiler2, tiered, core) do (
 echo -- %%i --
 echo # Generated file!                                                        >    %HotSpotBuildSpace%\%%i\local.make
 echo # Changing a variable below and then deleting %ProjectFile% will cause  >>    %HotSpotBuildSpace%\%%i\local.make
--- a/make/windows/makefiles/compile.make	Fri Apr 05 09:10:28 2013 -0700
+++ b/make/windows/makefiles/compile.make	Fri Apr 05 10:32:51 2013 -0700
@@ -221,13 +221,6 @@
 !endif
 !endif
 
-# Compile for space above time.
-!if "$(Variant)" == "kernel"
-PRODUCT_OPT_OPTION   = /O1 /Oy-
-FASTDEBUG_OPT_OPTION = /O1 /Oy-
-DEBUG_OPT_OPTION     = /Od
-!endif
-
 # If NO_OPTIMIZATIONS is defined in the environment, turn everything off
 !ifdef NO_OPTIMIZATIONS
 PRODUCT_OPT_OPTION   = $(DEBUG_OPT_OPTION)
--- a/make/windows/makefiles/product.make	Fri Apr 05 09:10:28 2013 -0700
+++ b/make/windows/makefiles/product.make	Fri Apr 05 10:32:51 2013 -0700
@@ -51,13 +51,6 @@
 # Force resources to be rebuilt every time
 $(Res_Files): FORCE
 
-# Kernel doesn't need exported vtbl symbols.
-!if "$(Variant)" == "kernel"
-$(AOUT): $(Res_Files) $(Obj_Files)
-	$(LD) @<<
-  $(LD_FLAGS) /out:$@ /implib:$*.lib $(Obj_Files) $(Res_Files)
-<<
-!else
 vm.def: $(Obj_Files)
 	sh $(WorkSpace)/make/windows/build_vm_def.sh
 
@@ -65,7 +58,6 @@
 	$(LD) @<<
   $(LD_FLAGS) /out:$@ /implib:$*.lib /def:vm.def $(Obj_Files) $(Res_Files)
 <<
-!endif
 !if "$(MT)" != ""
 # The previous link command created a .manifest file that we want to
 # insert into the linked artifact so we do not need to track it
--- a/make/windows/makefiles/trace.make	Fri Apr 05 09:10:28 2013 -0700
+++ b/make/windows/makefiles/trace.make	Fri Apr 05 10:32:51 2013 -0700
@@ -116,8 +116,6 @@
 # #########################################################################
 
 cleanall :
-!if "$(INCLUDE_TRACE)" == "1"
 	rm $(TraceGeneratedFiles)
-!endif
 
 
--- a/make/windows/projectfiles/common/Makefile	Fri Apr 05 09:10:28 2013 -0700
+++ b/make/windows/projectfiles/common/Makefile	Fri Apr 05 10:32:51 2013 -0700
@@ -45,12 +45,11 @@
 !endif
 !endif
 
-!ifndef OPENJDK
-!if exist($(WorkSpace)\src\closed)
-OPENJDK=false
-!else
-OPENJDK=true
-!endif
+# if hotspot-only build and/or OPENJDK isn't passed down, need to set OPENJDK
+!ifndef OPENJDK
+!if !exists($(WorkSpace)\src\closed)
+OPENJDK=true
+!endif
 !endif
 
 
--- a/make/windows/projectfiles/kernel/Makefile	Fri Apr 05 09:10:28 2013 -0700
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,27 +0,0 @@
-#
-# Copyright (c) 2007, 2010, 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.
-#  
-#
-
-!include ../local.make
-
-!include $(HOTSPOTWORKSPACE)/make/windows/projectfiles/common/Makefile
--- a/make/windows/projectfiles/kernel/vm.def	Fri Apr 05 09:10:28 2013 -0700
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,7 +0,0 @@
-;
-; This .DEF file is a placeholder for one which is automatically
-; generated during the build process. See
-; make\windows\build_vm_def.sh and
-; make\windows\makefiles\projectcreator.make (esp. the "-prelink"
-; options).
-;
--- a/make/windows/projectfiles/kernel/vm.dsw	Fri Apr 05 09:10:28 2013 -0700
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,29 +0,0 @@
-Microsoft Developer Studio Workspace File, Format Version 6.00
-# WARNING: DO NOT EDIT OR DELETE THIS WORKSPACE FILE!
-
-###############################################################################
-
-Project: "vm"=.\vm.dsp - Package Owner=<4>
-
-Package=<5>
-{{{
-}}}
-
-Package=<4>
-{{{
-}}}
-
-###############################################################################
-
-Global:
-
-Package=<5>
-{{{
-}}}
-
-Package=<3>
-{{{
-}}}
-
-###############################################################################
-
--- a/src/os/linux/vm/globals_linux.hpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/os/linux/vm/globals_linux.hpp	Fri Apr 05 10:32:51 2013 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2005, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 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
@@ -40,6 +40,9 @@
   product(bool, UseHugeTLBFS, false,                                    \
           "Use MAP_HUGETLB for large pages")                            \
                                                                         \
+  product(bool, LoadExecStackDllInVMThread, true,                       \
+          "Load DLLs with executable-stack attribute in the VM Thread") \
+                                                                        \
   product(bool, UseSHM, false,                                          \
           "Use SYSV shared memory for large pages")
 
--- a/src/os/linux/vm/os_linux.cpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/os/linux/vm/os_linux.cpp	Fri Apr 05 10:32:51 2013 -0700
@@ -43,6 +43,7 @@
 #include "runtime/extendedPC.hpp"
 #include "runtime/globals.hpp"
 #include "runtime/interfaceSupport.hpp"
+#include "runtime/init.hpp"
 #include "runtime/java.hpp"
 #include "runtime/javaCalls.hpp"
 #include "runtime/mutexLocker.hpp"
@@ -61,6 +62,7 @@
 #include "utilities/decoder.hpp"
 #include "utilities/defaultStream.hpp"
 #include "utilities/events.hpp"
+#include "utilities/elfFile.hpp"
 #include "utilities/growableArray.hpp"
 #include "utilities/vmError.hpp"
 #ifdef TARGET_ARCH_x86
@@ -1816,20 +1818,101 @@
   // in case of error it checks if .dll/.so was built for the
   // same architecture as Hotspot is running on
 
+
+// Remember the stack's state. The Linux dynamic linker will change
+// the stack to 'executable' at most once, so we must safepoint only once.
+bool os::Linux::_stack_is_executable = false;
+
+// VM operation that loads a library.  This is necessary if stack protection
+// of the Java stacks can be lost during loading the library.  If we
+// do not stop the Java threads, they can stack overflow before the stacks
+// are protected again.
+class VM_LinuxDllLoad: public VM_Operation {
+ private:
+  const char *_filename;
+  char *_ebuf;
+  int _ebuflen;
+  void *_lib;
+ public:
+  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_in_vmthread(_filename, _ebuf, _ebuflen);
+    os::Linux::_stack_is_executable = true;
+  }
+  void* loaded_library() { return _lib; }
+};
+
 void * os::dll_load(const char *filename, char *ebuf, int ebuflen)
 {
-  void * result= ::dlopen(filename, RTLD_LAZY);
+  void * result = NULL;
+  bool load_attempted = false;
+
+  // Check whether the library to load might change execution rights
+  // of the stack. If they are changed, the protection of the stack
+  // guard pages will be lost. We need a safepoint to fix this.
+  //
+  // See Linux man page execstack(8) for more info.
+  if (os::uses_stack_guard_pages() && !os::Linux::_stack_is_executable) {
+    ElfFile ef(filename);
+    if (!ef.specifies_noexecstack()) {
+      if (!is_init_completed()) {
+        os::Linux::_stack_is_executable = true;
+        // This is OK - No Java threads have been created yet, and hence no
+        // stack guard pages to fix.
+        //
+        // This should happen only when you are building JDK7 using a very
+        // old version of JDK6 (e.g., with JPRT) and running test_gamma.
+        //
+        // Dynamic loader will make all stacks executable after
+        // this function returns, and will not do that again.
+        assert(Threads::first() == NULL, "no Java threads should exist yet.");
+      } else {
+        warning("You have loaded library %s which might have disabled stack guard. "
+                "The VM will try to fix the stack guard now.\n"
+                "It's highly recommended that you fix the library with "
+                "'execstack -c <libfile>', or link it with '-z noexecstack'.",
+                filename);
+
+        assert(Thread::current()->is_Java_thread(), "must be Java thread");
+        JavaThread *jt = JavaThread::current();
+        if (jt->thread_state() != _thread_in_native) {
+          // This happens when a compiler thread tries to load a hsdis-<arch>.so file
+          // that requires ExecStack. Cannot enter safe point. Let's give up.
+          warning("Unable to fix stack guard. Giving up.");
+        } else {
+          if (!LoadExecStackDllInVMThread) {
+            // 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 = os::Linux::dlopen_helper(filename, ebuf, ebuflen);
+          }
+
+          ThreadInVMfromNative tiv(jt);
+          debug_only(VMNativeEntryWrapper vew;)
+
+          VM_LinuxDllLoad op(filename, ebuf, ebuflen);
+          VMThread::execute(&op);
+          if (LoadExecStackDllInVMThread) {
+            result = op.loaded_library();
+          }
+          load_attempted = true;
+        }
+      }
+    }
+  }
+
+  if (!load_attempted) {
+    result = os::Linux::dlopen_helper(filename, ebuf, ebuflen);
+  }
+
   if (result != NULL) {
     // Successful loading
     return result;
   }
 
   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);
 
@@ -1972,6 +2055,47 @@
   return NULL;
 }
 
+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_helper(filename, ebuf, ebuflen);
+  }
+
+  // Since 7019808, libjvm.so is linked with -noexecstack. If the VM loads a
+  // library that requires an executable stack, or which does not have this
+  // stack attribute set, dlopen changes the stack attribute to executable. The
+  // read protection of the guard pages gets lost.
+  //
+  // Need to check _stack_is_executable again as multiple VM_LinuxDllLoad
+  // may have been queued at the same time.
+
+  if (!_stack_is_executable) {
+    JavaThread *jt = Threads::first();
+
+    while (jt) {
+      if (!jt->stack_guard_zone_unused() &&        // Stack not yet fully initialized
+          jt->stack_yellow_zone_enabled()) {       // No pending stack overflow exceptions
+        if (!os::guard_memory((char *) jt->stack_red_zone_base() - jt->stack_red_zone_size(),
+                              jt->stack_yellow_zone_size() + jt->stack_red_zone_size())) {
+          warning("Attempt to reguard stack yellow zone failed.");
+        }
+      }
+      jt = jt->next();
+    }
+  }
+
+  return result;
+}
+
 /*
  * glibc-2.0 libdl is not MT safe.  If you are building with any glibc,
  * chances are you might want to run the generated bits against glibc-2.0
--- a/src/os/linux/vm/os_linux.hpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/os/linux/vm/os_linux.hpp	Fri Apr 05 10:32:51 2013 -0700
@@ -94,6 +94,10 @@
   static void print_libversion_info(outputStream* st);
 
  public:
+  static bool _stack_is_executable;
+  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();
   static void set_fpu_control_word(int fpu_control);
--- a/src/os_cpu/linux_sparc/vm/os_linux_sparc.cpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/os_cpu/linux_sparc/vm/os_linux_sparc.cpp	Fri Apr 05 10:32:51 2013 -0700
@@ -410,6 +410,11 @@
       // to handle_unexpected_exception way down below.
       thread->disable_stack_red_zone();
       tty->print_raw_cr("An irrecoverable stack overflow has occurred.");
+
+      // This is a likely cause, but hard to verify. Let's just print
+      // it as a hint.
+      tty->print_raw_cr("Please check if any of your loaded .so files has "
+                        "enabled executable stack (see man page execstack(8))");
     } else {
       // Accessing stack address below sp may cause SEGV if current
       // thread has MAP_GROWSDOWN stack. This should only happen when
--- a/src/os_cpu/linux_x86/vm/os_linux_x86.cpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/os_cpu/linux_x86/vm/os_linux_x86.cpp	Fri Apr 05 10:32:51 2013 -0700
@@ -306,6 +306,11 @@
           // to handle_unexpected_exception way down below.
           thread->disable_stack_red_zone();
           tty->print_raw_cr("An irrecoverable stack overflow has occurred.");
+
+          // This is a likely cause, but hard to verify. Let's just print
+          // it as a hint.
+          tty->print_raw_cr("Please check if any of your loaded .so files has "
+                            "enabled executable stack (see man page execstack(8))");
         } else {
           // Accessing stack address below sp may cause SEGV if current
           // thread has MAP_GROWSDOWN stack. This should only happen when
--- a/src/share/tools/ProjectCreator/BuildConfig.java	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/tools/ProjectCreator/BuildConfig.java	Fri Apr 05 10:32:51 2013 -0700
@@ -568,36 +568,6 @@
     }
 }
 
-class KernelDebugConfig extends GenericDebugConfig {
-    String getOptFlag() {
-        return getCI().getNoOptFlag();
-    }
-
-    KernelDebugConfig() {
-        initNames("kernel", "debug", "jvm.dll");
-        init(getIncludes(), getDefines());
-    }
-}
-
-
-class KernelFastDebugConfig extends GenericDebugConfig {
-    String getOptFlag() {
-        return getCI().getOptFlag();
-    }
-
-    KernelFastDebugConfig() {
-        initNames("kernel", "fastdebug", "jvm.dll");
-        init(getIncludes(), getDefines());
-    }
-}
-
-
-class KernelProductConfig extends ProductConfig {
-    KernelProductConfig() {
-        initNames("kernel", "product", "jvm.dll");
-        init(getIncludes(), getDefines());
-    }
-}
 
 abstract class CompilerInterface {
     abstract Vector getBaseCompilerFlags(Vector defines, Vector includes, String outDir);
--- a/src/share/tools/ProjectCreator/WinGammaPlatform.java	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/tools/ProjectCreator/WinGammaPlatform.java	Fri Apr 05 10:32:51 2013 -0700
@@ -564,12 +564,6 @@
         allConfigs.add(new CoreFastDebugConfig());
         allConfigs.add(new CoreProductConfig());
 
-        if (platform.equals("Win32")) {
-            allConfigs.add(new KernelDebugConfig());
-            allConfigs.add(new KernelFastDebugConfig());
-            allConfigs.add(new KernelProductConfig());
-        }
-
         return allConfigs;
     }
 
--- a/src/share/vm/c1/c1_FrameMap.cpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/vm/c1/c1_FrameMap.cpp	Fri Apr 05 10:32:51 2013 -0700
@@ -308,27 +308,6 @@
   return sp_offset_for_monitor_base(index) + in_ByteSize(BasicObjectLock::obj_offset_in_bytes());
 }
 
-void FrameMap::print_frame_layout() const {
-  int svar;
-  tty->print_cr("#####################################");
-  tty->print_cr("Frame size in words %d", framesize());
-
-  if( _num_monitors > 0) {
-    tty->print_cr("monitor [0]:%d | [%2d]:%d",
-                  in_bytes(sp_offset_for_monitor_base(0)),
-                  in_bytes(sp_offset_for_monitor_base(_num_monitors)));
-  }
-  if( _num_spills > 0) {
-    svar = _num_spills - 1;
-    if(svar == 0)
-      tty->print_cr("spill   [0]:%d", in_bytes(sp_offset_for_spill(0)));
-    else
-      tty->print_cr("spill   [0]:%d | [%2d]:%d", in_bytes(sp_offset_for_spill(0)),
-                    svar,
-                    in_bytes(sp_offset_for_spill(svar)));
-  }
-}
-
 
 // For OopMaps, map a local variable or spill index to an VMReg.
 // This is the offset from sp() in the frame of the slot for the index,
--- a/src/share/vm/c1/c1_FrameMap.hpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/vm/c1/c1_FrameMap.hpp	Fri Apr 05 10:32:51 2013 -0700
@@ -222,8 +222,6 @@
     return make_new_address(sp_offset_for_monitor_object(monitor_index));
   }
 
-  void print_frame_layout() const;
-
   // Creates Location describing desired slot and returns it via pointer
   // to Location object. Returns true if the stack frame offset was legal
   // (as defined by Location::legal_offset_in_bytes()), false otherwise.
--- a/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp	Fri Apr 05 10:32:51 2013 -0700
@@ -1695,6 +1695,24 @@
   }
 }
 
+bool CMSCollector::is_external_interruption() {
+  GCCause::Cause cause = GenCollectedHeap::heap()->gc_cause();
+  return GCCause::is_user_requested_gc(cause) ||
+         GCCause::is_serviceability_requested_gc(cause);
+}
+
+void CMSCollector::report_concurrent_mode_interruption() {
+  if (is_external_interruption()) {
+    if (PrintGCDetails) {
+      gclog_or_tty->print(" (concurrent mode interrupted)");
+    }
+  } else {
+    if (PrintGCDetails) {
+      gclog_or_tty->print(" (concurrent mode failure)");
+    }
+    _gc_tracer_cm->report_concurrent_mode_failure();
+  }
+}
 
 // The foreground and background collectors need to coordinate in order
 // to make sure that they do not mutually interfere with CMS collections.
@@ -1852,14 +1870,8 @@
   }
 )
 
-  if (PrintGCDetails && first_state > Idling) {
-    GCCause::Cause cause = GenCollectedHeap::heap()->gc_cause();
-    if (GCCause::is_user_requested_gc(cause) ||
-        GCCause::is_serviceability_requested_gc(cause)) {
-      gclog_or_tty->print(" (concurrent mode interrupted)");
-    } else {
-      gclog_or_tty->print(" (concurrent mode failure)");
-    }
+  if (first_state > Idling) {
+    report_concurrent_mode_interruption();
   }
 
   if (should_compact) {
@@ -2359,6 +2371,7 @@
           CMSTokenSync        z(true);   // not strictly needed.
           if (_collectorState == Resizing) {
             compute_new_size();
+            save_heap_summary();
             _collectorState = Resetting;
           } else {
             assert(_collectorState == Idling, "The state should only change"
@@ -2418,16 +2431,31 @@
   _cms_start_registered = true;
   _gc_timer_cm->register_gc_start(os::elapsed_counter());
   _gc_tracer_cm->report_gc_start(cause, _gc_timer_cm->gc_start());
+
+  save_heap_summary();
+  report_heap_summary(GCWhen::BeforeGC);
 }
 
 void CMSCollector::register_gc_end() {
   if (_cms_start_registered) {
+    report_heap_summary(GCWhen::AfterGC);
+
     _gc_timer_cm->register_gc_end(os::elapsed_counter());
     _gc_tracer_cm->report_gc_end(_gc_timer_cm->gc_end(), _gc_timer_cm->time_partitions());
     _cms_start_registered = false;
   }
 }
 
+void CMSCollector::save_heap_summary() {
+  GenCollectedHeap* gch = GenCollectedHeap::heap();
+  _last_heap_summary = gch->create_heap_summary();
+  _last_perm_gen_summary = gch->create_perm_gen_summary();
+}
+
+void CMSCollector::report_heap_summary(GCWhen::Type when) {
+  _gc_tracer_cm->report_gc_heap_summary(when, _last_heap_summary, _last_perm_gen_summary);
+}
+
 void CMSCollector::collect_in_foreground(bool clear_all_soft_refs) {
   assert(_foregroundGCIsActive && !_foregroundGCShouldWait,
          "Foreground collector should be waiting, not executing");
@@ -2514,6 +2542,7 @@
           gclog_or_tty->print("Verify before reset: ");
           Universe::verify();
         }
+        save_heap_summary();
         reset(false);
         assert(_collectorState == Idling, "Collector state should "
           "have changed");
--- a/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp	Fri Apr 05 10:32:51 2013 -0700
@@ -25,8 +25,10 @@
 #ifndef SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CONCURRENTMARKSWEEPGENERATION_HPP
 #define SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CONCURRENTMARKSWEEPGENERATION_HPP
 
+#include "gc_implementation/shared/gcHeapSummary.hpp"
 #include "gc_implementation/shared/gSpaceCounters.hpp"
 #include "gc_implementation/shared/gcStats.hpp"
+#include "gc_implementation/shared/gcWhen.hpp"
 #include "gc_implementation/shared/generationCounters.hpp"
 #include "memory/freeBlockDictionary.hpp"
 #include "memory/generation.hpp"
@@ -615,8 +617,14 @@
   ConcurrentGCTimer* _gc_timer_cm;
 
   bool _cms_start_registered;
+
+  GCHeapSummary _last_heap_summary;
+  PermGenSummary _last_perm_gen_summary;
+
   void register_gc_start(GCCause::Cause cause);
   void register_gc_end();
+  void save_heap_summary();
+  void report_heap_summary(GCWhen::Type when);
 
  protected:
   ConcurrentMarkSweepGeneration* _cmsGen;  // old gen (CMS)
@@ -842,6 +850,10 @@
   void do_mark_sweep_work(bool clear_all_soft_refs,
     CollectorState first_state, bool should_start_over);
 
+  // Work methods for reporting concurrent mode interruption or failure
+  bool is_external_interruption();
+  void report_concurrent_mode_interruption();
+
   // If the backgrould GC is active, acquire control from the background
   // GC and do the collection.
   void acquire_control_and_collect(bool   full, bool clear_all_soft_refs);
--- a/src/share/vm/gc_implementation/concurrentMarkSweep/vmCMSOperations.cpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/vm/gc_implementation/concurrentMarkSweep/vmCMSOperations.cpp	Fri Apr 05 10:32:51 2013 -0700
@@ -195,6 +195,7 @@
 
   VM_CMS_Operation::verify_after_gc();
 
+  _collector->save_heap_summary();
   _collector->_gc_timer_cm->register_gc_pause_end(os::elapsed_counter());
 
 #ifndef USDT2
--- a/src/share/vm/gc_implementation/parNew/parCardTableModRefBS.cpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/vm/gc_implementation/parNew/parCardTableModRefBS.cpp	Fri Apr 05 10:32:51 2013 -0700
@@ -373,6 +373,8 @@
                          " does not exceed used.end() = " PTR_FORMAT ","
                          " yet last_chunk_index_to_check " INTPTR_FORMAT
                          " exceeds last_chunk_index " INTPTR_FORMAT,
+                         last_block, last_block + last_block_size,
+                         used.end(),
                          last_chunk_index_to_check, last_chunk_index));
           assert(sp->used_region().end() > used.end(),
                  err_msg("Expansion did not happen: "
--- a/src/share/vm/gc_implementation/shared/gcHeapSummary.hpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/vm/gc_implementation/shared/gcHeapSummary.hpp	Fri Apr 05 10:32:51 2013 -0700
@@ -32,6 +32,8 @@
   HeapWord* _committed_end;
   HeapWord* _reserved_end;
 public:
+  VirtualSpaceSummary() :
+      _start(NULL), _committed_end(NULL), _reserved_end(NULL) { }
   VirtualSpaceSummary(HeapWord* start, HeapWord* committed_end, HeapWord* reserved_end) :
       _start(start), _committed_end(committed_end), _reserved_end(reserved_end) { }
 
@@ -47,6 +49,8 @@
   HeapWord* _end;
   size_t    _used;
 public:
+  SpaceSummary() :
+      _start(NULL), _end(NULL), _used(0) { }
   SpaceSummary(HeapWord* start, HeapWord* end, size_t used) :
       _start(start), _end(end), _used(used) { }
 
@@ -70,6 +74,8 @@
   size_t _used;
 
  public:
+   GCHeapSummary() :
+       _heap(), _used(0) { }
    GCHeapSummary(VirtualSpaceSummary& heap_space, size_t used) :
        _heap(heap_space), _used(used) { }
 
@@ -108,6 +114,8 @@
   SpaceSummary        _object_space;
 
  public:
+  PermGenSummary() :
+       _perm_space(), _object_space() { }
   PermGenSummary(const VirtualSpaceSummary& perm_space, const SpaceSummary& object_space) :
        _perm_space(perm_space), _object_space(object_space) { }
 
--- a/src/share/vm/gc_implementation/shared/gcTrace.cpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/vm/gc_implementation/shared/gcTrace.cpp	Fri Apr 05 10:32:51 2013 -0700
@@ -126,6 +126,12 @@
   _parallel_old_gc_info.report_dense_prefix(dense_prefix);
 }
 
+void CMSTracer::report_concurrent_mode_failure() {
+  assert_set_gc_id();
+
+  send_concurrent_mode_failure_event();
+}
+
 #ifndef SERIALGC
 void G1NewTracer::report_yc_type(G1YCType type) {
   assert_set_gc_id();
--- a/src/share/vm/gc_implementation/shared/gcTrace.hpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/vm/gc_implementation/shared/gcTrace.hpp	Fri Apr 05 10:32:51 2013 -0700
@@ -211,6 +211,11 @@
 class CMSTracer : public OldGCTracer {
  public:
   CMSTracer() : OldGCTracer(ConcurrentMarkSweep) {}
+
+  void report_concurrent_mode_failure();
+
+ private:
+  void send_concurrent_mode_failure_event();
 };
 
 class G1OldTracer : public OldGCTracer {
--- a/src/share/vm/gc_implementation/shared/gcTraceSend.cpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/vm/gc_implementation/shared/gcTraceSend.cpp	Fri Apr 05 10:32:51 2013 -0700
@@ -111,6 +111,14 @@
   }
 }
 
+void CMSTracer::send_concurrent_mode_failure_event() {
+  EventConcurrentModeFailure e;
+  if (e.should_commit()) {
+    e.set_gcId(_shared_gc_info.id());
+    e.commit();
+  }
+}
+
 #ifndef SERIALGC
 void G1NewTracer::send_g1_young_gc_event() {
   EventGCG1GarbageCollection e(UNTIMED);
--- a/src/share/vm/memory/cardTableModRefBS.cpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/vm/memory/cardTableModRefBS.cpp	Fri Apr 05 10:32:51 2013 -0700
@@ -693,7 +693,7 @@
     if (failed) {
       if (!failures) {
         tty->cr();
-        tty->print_cr("== CT verification failed: ["PTR_FORMAT","PTR_FORMAT"]");
+        tty->print_cr("== CT verification failed: ["PTR_FORMAT","PTR_FORMAT"]", start, end);
         tty->print_cr("==   %sexpecting value: %d",
                       (val_equals) ? "" : "not ", val);
         failures = true;
--- a/src/share/vm/memory/cardTableRS.cpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/vm/memory/cardTableRS.cpp	Fri Apr 05 10:32:51 2013 -0700
@@ -369,7 +369,7 @@
     assert(jp >= _begin && jp < _end,
            err_msg("Error: jp " PTR_FORMAT " should be within "
                    "[_begin, _end) = [" PTR_FORMAT "," PTR_FORMAT ")",
-                   _begin, _end));
+                   jp, _begin, _end));
     oop obj = oopDesc::load_decode_heap_oop(p);
     guarantee(obj == NULL || (HeapWord*)obj >= _boundary,
               err_msg("pointer " PTR_FORMAT " at " PTR_FORMAT " on "
--- a/src/share/vm/memory/heapInspection.cpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/vm/memory/heapInspection.cpp	Fri Apr 05 10:32:51 2013 -0700
@@ -87,7 +87,7 @@
     }
     elt = elt->next();
   }
-  elt = new KlassInfoEntry(k, list());
+  elt = new (std::nothrow) KlassInfoEntry(k, list());
   // We may be out of space to allocate the new entry.
   if (elt != NULL) {
     set_list(elt);
@@ -113,12 +113,12 @@
   }
 }
 
-KlassInfoTable::KlassInfoTable(int size, HeapWord* ref) {
+KlassInfoTable::KlassInfoTable(HeapWord* ref) {
   _size = 0;
   _ref = ref;
-  _buckets = NEW_C_HEAP_ARRAY(KlassInfoBucket, size, mtInternal);
+  _buckets = (KlassInfoBucket *) os::malloc(sizeof(KlassInfoBucket) * _num_buckets, mtInternal);
   if (_buckets != NULL) {
-    _size = size;
+    _size = _num_buckets;
     for (int index = 0; index < _size; index++) {
       _buckets[index].initialize();
     }
@@ -177,9 +177,9 @@
   return (*e1)->compare(*e1,*e2);
 }
 
-KlassInfoHisto::KlassInfoHisto(const char* title, int estimatedCount) :
+KlassInfoHisto::KlassInfoHisto(const char* title) :
   _title(title) {
-  _elements = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<KlassInfoEntry*>(estimatedCount,true);
+  _elements = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<KlassInfoEntry*>(_histo_initial_size, true);
 }
 
 KlassInfoHisto::~KlassInfoHisto() {
@@ -228,82 +228,104 @@
  private:
   KlassInfoTable* _cit;
   size_t _missed_count;
+  BoolObjectClosure* _filter;
  public:
-  RecordInstanceClosure(KlassInfoTable* cit) :
-    _cit(cit), _missed_count(0) {}
+  RecordInstanceClosure(KlassInfoTable* cit, BoolObjectClosure* filter) :
+    _cit(cit), _missed_count(0), _filter(filter) {}
 
   void do_object(oop obj) {
-    if (!_cit->record_instance(obj)) {
-      _missed_count++;
+    if (should_visit(obj)) {
+      if (!_cit->record_instance(obj)) {
+        _missed_count++;
+      }
     }
   }
 
   size_t missed_count() { return _missed_count; }
+ private:
+  bool should_visit(oop obj) {
+    return _filter == NULL || _filter->do_object_b(obj);
+  }
 };
 
+HeapWord* HeapInspection::start_of_perm_gen() {
+  if (is_shared_heap()) {
+    SharedHeap* sh = SharedHeap::heap();
+    return sh->perm_gen()->used_region().start();
+  }
+#ifndef SERIALGC
+  ParallelScavengeHeap* psh = (ParallelScavengeHeap*)Universe::heap();
+  return psh->perm_gen()->object_space()->used_region().start();
+#else
+  ShouldNotReachHere();
+  return NULL;
+#endif // SERIALGC
+}
+
+bool HeapInspection::is_shared_heap() {
+  CollectedHeap* heap = Universe::heap();
+  return heap->kind() == CollectedHeap::G1CollectedHeap ||
+         heap->kind() == CollectedHeap::GenCollectedHeap;
+}
+
+void HeapInspection::prologue() {
+  if (is_shared_heap()) {
+    SharedHeap* sh = SharedHeap::heap();
+    sh->gc_prologue(false /* !full */); // get any necessary locks, etc.
+  }
+}
+
+void HeapInspection::epilogue() {
+  if (is_shared_heap()) {
+    SharedHeap* sh = SharedHeap::heap();
+    sh->gc_epilogue(false /* !full */); // release all acquired locks, etc.
+  }
+}
+
+size_t HeapInspection::instance_inspection(KlassInfoTable* cit,
+                                           KlassInfoClosure* cl,
+                                           bool need_prologue,
+                                           BoolObjectClosure* filter) {
+  ResourceMark rm;
+
+  if (need_prologue) {
+    prologue();
+  }
+
+  RecordInstanceClosure ric(cit, filter);
+  Universe::heap()->object_iterate(&ric);
+  cit->iterate(cl);
+
+  // need to run epilogue if we run prologue
+  if (need_prologue) {
+    epilogue();
+  }
+
+  return ric.missed_count();
+}
+
 void HeapInspection::heap_inspection(outputStream* st, bool need_prologue) {
   ResourceMark rm;
-  HeapWord* ref;
 
-  CollectedHeap* heap = Universe::heap();
-  bool is_shared_heap = false;
-  switch (heap->kind()) {
-    case CollectedHeap::G1CollectedHeap:
-    case CollectedHeap::GenCollectedHeap: {
-      is_shared_heap = true;
-      SharedHeap* sh = (SharedHeap*)heap;
-      if (need_prologue) {
-        sh->gc_prologue(false /* !full */); // get any necessary locks, etc.
-      }
-      ref = sh->perm_gen()->used_region().start();
-      break;
-    }
-#ifndef SERIALGC
-    case CollectedHeap::ParallelScavengeHeap: {
-      ParallelScavengeHeap* psh = (ParallelScavengeHeap*)heap;
-      ref = psh->perm_gen()->object_space()->used_region().start();
-      break;
-    }
-#endif // SERIALGC
-    default:
-      ShouldNotReachHere(); // Unexpected heap kind for this op
-  }
-  // Collect klass instance info
-  KlassInfoTable cit(KlassInfoTable::cit_size, ref);
+  KlassInfoTable cit(start_of_perm_gen());
   if (!cit.allocation_failed()) {
-    // Iterate over objects in the heap
-    RecordInstanceClosure ric(&cit);
-    // If this operation encounters a bad object when using CMS,
-    // consider using safe_object_iterate() which avoids perm gen
-    // objects that may contain bad references.
-    Universe::heap()->object_iterate(&ric);
+    KlassInfoHisto histo("\n"
+                     " num     #instances         #bytes  class name\n"
+                     "----------------------------------------------");
+    HistoClosure hc(&histo);
 
-    // Report if certain classes are not counted because of
-    // running out of C-heap for the histogram.
-    size_t missed_count = ric.missed_count();
+    size_t missed_count = instance_inspection(&cit, &hc, need_prologue);
     if (missed_count != 0) {
       st->print_cr("WARNING: Ran out of C-heap; undercounted " SIZE_FORMAT
                    " total instances in data below",
                    missed_count);
     }
-    // Sort and print klass instance info
-    KlassInfoHisto histo("\n"
-                     " num     #instances         #bytes  class name\n"
-                     "----------------------------------------------",
-                     KlassInfoHisto::histo_initial_size);
-    HistoClosure hc(&histo);
-    cit.iterate(&hc);
     histo.sort();
     histo.print_on(st);
   } else {
     st->print_cr("WARNING: Ran out of C-heap; histogram not generated");
   }
   st->flush();
-
-  if (need_prologue && is_shared_heap) {
-    SharedHeap* sh = (SharedHeap*)heap;
-    sh->gc_epilogue(false /* !full */); // release all acquired locks, etc.
-  }
 }
 
 class FindInstanceClosure : public ObjectClosure {
--- a/src/share/vm/memory/heapInspection.hpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/vm/memory/heapInspection.hpp	Fri Apr 05 10:32:51 2013 -0700
@@ -85,6 +85,7 @@
 class KlassInfoTable: public StackObj {
  private:
   int _size;
+  static const int _num_buckets = 20011;
 
   // An aligned reference address (typically the least
   // address in the perm gen) used for hashing klass
@@ -96,11 +97,7 @@
   KlassInfoEntry* lookup(const klassOop k);
 
  public:
-  // Table size
-  enum {
-    cit_size = 20011
-  };
-  KlassInfoTable(int size, HeapWord* ref);
+  KlassInfoTable(HeapWord* ref);
   ~KlassInfoTable();
   bool record_instance(const oop obj);
   void iterate(KlassInfoClosure* cic);
@@ -115,12 +112,9 @@
   const char* title() const { return _title; }
   static int sort_helper(KlassInfoEntry** e1, KlassInfoEntry** e2);
   void print_elements(outputStream* st) const;
+  static const int _histo_initial_size = 1000;
  public:
-  enum {
-    histo_initial_size = 1000
-  };
-  KlassInfoHisto(const char* title,
-             int estimatedCount);
+  KlassInfoHisto(const char* title);
   ~KlassInfoHisto();
   void add(KlassInfoEntry* cie);
   void print_on(outputStream* st) const;
@@ -131,7 +125,16 @@
 class HeapInspection : public AllStatic {
  public:
   static void heap_inspection(outputStream* st, bool need_prologue);
+  static size_t instance_inspection(KlassInfoTable* cit,
+                                    KlassInfoClosure* cl,
+                                    bool need_prologue,
+                                    BoolObjectClosure* filter = NULL);
+  static HeapWord* start_of_perm_gen();
   static void find_instances_at_safepoint(klassOop k, GrowableArray<oop>* result);
+ private:
+  static bool is_shared_heap();
+  static void prologue();
+  static void epilogue();
 };
 
 #endif // SHARE_VM_MEMORY_HEAPINSPECTION_HPP
--- a/src/share/vm/opto/compile.cpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/vm/opto/compile.cpp	Fri Apr 05 10:32:51 2013 -0700
@@ -2892,6 +2892,13 @@
       }
     }
     break;
+  case Op_MemBarStoreStore:
+    // Break the link with AllocateNode: it is no longer useful and
+    // confuses register allocation.
+    if (n->req() > MemBarNode::Precedent) {
+      n->set_req(MemBarNode::Precedent, top());
+    }
+    break;
   default:
     assert( !n->is_Call(), "" );
     assert( !n->is_Mem(), "" );
--- a/src/share/vm/opto/graphKit.cpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/vm/opto/graphKit.cpp	Fri Apr 05 10:32:51 2013 -0700
@@ -3445,7 +3445,6 @@
 
 void GraphKit::final_sync(IdealKit& ideal) {
   // Final sync IdealKit and graphKit.
-  __ drain_delay_transform();
   sync_kit(ideal);
 }
 
--- a/src/share/vm/opto/idealKit.cpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/vm/opto/idealKit.cpp	Fri Apr 05 10:32:51 2013 -0700
@@ -48,9 +48,9 @@
   _cvstate = NULL;
   // We can go memory state free or else we need the entire memory state
   assert(_initial_memory == NULL || _initial_memory->Opcode() == Op_MergeMem, "memory must be pre-split");
+  assert(!_gvn.is_IterGVN(), "IdealKit can't be used during Optimize phase");
   int init_size = 5;
   _pending_cvstates = new (C->node_arena()) GrowableArray<Node*>(C->node_arena(), init_size, 0, 0);
-  _delay_transform  = new (C->node_arena()) GrowableArray<Node*>(C->node_arena(), init_size, 0, 0);
   DEBUG_ONLY(_state = new (C->node_arena()) GrowableArray<int>(C->node_arena(), init_size, 0, 0));
   if (!has_declarations) {
      declarations_done();
@@ -296,19 +296,16 @@
     return delay_transform(n);
   } else {
     n = gvn().transform(n);
-    if (!gvn().is_IterGVN()) {
-      C->record_for_igvn(n);
-    }
+    C->record_for_igvn(n);
     return n;
   }
 }
 
 //-----------------------------delay_transform-----------------------------------
 Node* IdealKit::delay_transform(Node* n) {
-  if (!gvn().is_IterGVN() || !gvn().is_IterGVN()->delay_transform()) {
-    gvn().set_type(n, n->bottom_type());
-  }
-  _delay_transform->push(n);
+  // Delay transform until IterativeGVN
+  gvn().set_type(n, n->bottom_type());
+  C->record_for_igvn(n);
   return n;
 }
 
@@ -332,17 +329,6 @@
   for (uint i = 0; i < m->req(); i++) m->set_req(i, NULL);
 }
 
-//-----------------------------drain_delay_transform----------------------------
-void IdealKit::drain_delay_transform() {
-  while (_delay_transform->length() > 0) {
-    Node* n = _delay_transform->pop();
-    gvn().transform(n);
-    if (!gvn().is_IterGVN()) {
-      C->record_for_igvn(n);
-    }
-  }
-}
-
 //-----------------------------IdealVariable----------------------------
 IdealVariable::IdealVariable(IdealKit &k) {
   k.declare(this);
@@ -351,9 +337,7 @@
 Node* IdealKit::memory(uint alias_idx) {
   MergeMemNode* mem = merged_memory();
   Node* p = mem->memory_at(alias_idx);
-  if (!gvn().is_IterGVN() || !gvn().is_IterGVN()->delay_transform()) {
-    _gvn.set_type(p, Type::MEMORY);  // must be mapped
-  }
+  _gvn.set_type(p, Type::MEMORY);  // must be mapped
   return p;
 }
 
--- a/src/share/vm/opto/idealKit.hpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/vm/opto/idealKit.hpp	Fri Apr 05 10:32:51 2013 -0700
@@ -102,7 +102,6 @@
   Compile * const C;
   PhaseGVN &_gvn;
   GrowableArray<Node*>* _pending_cvstates; // stack of cvstates
-  GrowableArray<Node*>* _delay_transform;  // delay invoking gvn.transform until drain
   Node* _cvstate;                          // current cvstate (control, memory and variables)
   uint _var_ct;                            // number of variables
   bool _delay_all_transforms;              // flag forcing all transforms to be delayed
@@ -121,7 +120,7 @@
   void clear(Node* m);                     // clear a cvstate
   void stop() { clear(_cvstate); }         // clear current cvstate
   Node* delay_transform(Node* n);
-  Node* transform(Node* n);                // gvn.transform or push node on delay list
+  Node* transform(Node* n);                // gvn.transform or skip it
   Node* promote_to_phi(Node* n, Node* reg);// Promote "n" to a phi on region "reg"
   bool was_promoted_to_phi(Node* n, Node* reg) {
     return (n->is_Phi() && n->in(0) == reg);
@@ -146,7 +145,6 @@
   IdealKit(GraphKit* gkit, bool delay_all_transforms = false, bool has_declarations = false);
   ~IdealKit() {
     stop();
-    drain_delay_transform();
   }
   void sync_kit(GraphKit* gkit);
 
@@ -173,7 +171,6 @@
   void bind(Node* lab);
   void goto_(Node* lab, bool bind = false);
   void declarations_done();
-  void drain_delay_transform();
 
   Node* IfTrue(IfNode* iff)  { return transform(new (C) IfTrueNode(iff)); }
   Node* IfFalse(IfNode* iff) { return transform(new (C) IfFalseNode(iff)); }
@@ -198,7 +195,11 @@
   Node* thread()  {  return gvn().transform(new (C) ThreadLocalNode()); }
 
   // Pointers
-  Node* AddP(Node *base, Node *ptr, Node *off) { return transform(new (C) AddPNode(base, ptr, off)); }
+
+  // Raw address should be transformed regardless 'delay_transform' flag
+  // to produce canonical form CastX2P(offset).
+  Node* AddP(Node *base, Node *ptr, Node *off) { return _gvn.transform(new (C) AddPNode(base, ptr, off)); }
+
   Node* CmpP(Node* l, Node* r) { return transform(new (C) CmpPNode(l, r)); }
 #ifdef _LP64
   Node* XorX(Node* l, Node* r) { return transform(new (C) XorLNode(l, r)); }
@@ -208,8 +209,6 @@
   Node* URShiftX(Node* l, Node* r) { return transform(new (C) URShiftXNode(l, r)); }
   Node* ConX(jint k) { return (Node*)gvn().MakeConX(k); }
   Node* CastPX(Node* ctl, Node* p) { return transform(new (C) CastP2XNode(ctl, p)); }
-  // Add a fixed offset to a pointer
-  Node* basic_plus_adr(Node* base, Node* ptr, intptr_t offset);
 
   // Memory operations
 
--- a/src/share/vm/opto/loopnode.cpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/vm/opto/loopnode.cpp	Fri Apr 05 10:32:51 2013 -0700
@@ -2251,6 +2251,11 @@
     return;
   }
 
+  // clear out the dead code after build_loop_late
+  while (_deadlist.size()) {
+    _igvn.remove_globally_dead_node(_deadlist.pop());
+  }
+
   if (stop_early) {
     assert(do_expensive_nodes, "why are we here?");
     if (process_expensive_nodes()) {
@@ -2260,9 +2265,7 @@
       // nodes again.
       C->set_major_progress();
     }
-
     _igvn.optimize();
-
     return;
   }
 
@@ -2273,11 +2276,6 @@
     eliminate_useless_predicates();
   }
 
-  // clear out the dead code
-  while(_deadlist.size()) {
-    _igvn.remove_globally_dead_node(_deadlist.pop());
-  }
-
 #ifndef PRODUCT
   C->verify_graph_edges();
   if (_verify_me) {             // Nested verify pass?
--- a/src/share/vm/opto/macro.cpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/vm/opto/macro.cpp	Fri Apr 05 10:32:51 2013 -0700
@@ -1094,12 +1094,6 @@
   Node* klass_node        = alloc->in(AllocateNode::KlassNode);
   Node* initial_slow_test = alloc->in(AllocateNode::InitialTest);
 
-  Node* storestore = alloc->storestore();
-  if (storestore != NULL) {
-    // Break this link that is no longer useful and confuses register allocation
-    storestore->set_req(MemBarNode::Precedent, top());
-  }
-
   assert(ctrl != NULL, "must have control");
   // We need a Region and corresponding Phi's to merge the slow-path and fast-path results.
   // they will not be used if "always_slow" is set
@@ -1317,7 +1311,7 @@
         // No InitializeNode or no stores captured by zeroing
         // elimination. Simply add the MemBarStoreStore after object
         // initialization.
-        MemBarNode* mb = MemBarNode::make(C, Op_MemBarStoreStore, Compile::AliasIdxBot, fast_oop_rawmem);
+        MemBarNode* mb = MemBarNode::make(C, Op_MemBarStoreStore, Compile::AliasIdxBot);
         transform_later(mb);
 
         mb->init_req(TypeFunc::Memory, fast_oop_rawmem);
--- a/src/share/vm/opto/phaseX.cpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/vm/opto/phaseX.cpp	Fri Apr 05 10:32:51 2013 -0700
@@ -1166,31 +1166,30 @@
     if (progress_state == PROCESS_INPUTS) {
       // After following inputs, continue to outputs
       _stack.set_index(PROCESS_OUTPUTS);
-      // Remove from iterative worklist
-      _worklist.remove(dead);
       if (!dead->is_Con()) { // Don't kill cons but uses
         bool recurse = false;
         // Remove from hash table
         _table.hash_delete( dead );
         // Smash all inputs to 'dead', isolating him completely
-        for( uint i = 0; i < dead->req(); i++ ) {
+        for (uint i = 0; i < dead->req(); i++) {
           Node *in = dead->in(i);
-          if( in ) {                 // Points to something?
-            dead->set_req(i,NULL);  // Kill the edge
-            if (in->outcnt() == 0 && in != C->top()) {// Made input go dead?
+          if (in != NULL && in != C->top()) {  // Points to something?
+            int nrep = dead->replace_edge(in, NULL);  // Kill edges
+            assert((nrep > 0), "sanity");
+            if (in->outcnt() == 0) { // Made input go dead?
               _stack.push(in, PROCESS_INPUTS); // Recursively remove
               recurse = true;
             } else if (in->outcnt() == 1 &&
                        in->has_special_unique_user()) {
               _worklist.push(in->unique_out());
             } else if (in->outcnt() <= 2 && dead->is_Phi()) {
-              if( in->Opcode() == Op_Region )
+              if (in->Opcode() == Op_Region) {
                 _worklist.push(in);
-              else if( in->is_Store() ) {
+              } else if (in->is_Store()) {
                 DUIterator_Fast imax, i = in->fast_outs(imax);
                 _worklist.push(in->fast_out(i));
                 i++;
-                if(in->outcnt() == 2) {
+                if (in->outcnt() == 2) {
                   _worklist.push(in->fast_out(i));
                   i++;
                 }
@@ -1209,38 +1208,42 @@
                 }
               }
             }
-          }
-        }
-        C->record_dead_node(dead->_idx);
-        if (dead->is_macro()) {
-          C->remove_macro_node(dead);
-        }
-        if (dead->is_expensive()) {
-          C->remove_expensive_node(dead);
-        }
-
+          } // if (in != NULL && in != C->top())
+        } // for (uint i = 0; i < dead->req(); i++)
         if (recurse) {
           continue;
         }
-      }
-      // Constant node that has no out-edges and has only one in-edge from
-      // root is usually dead. However, sometimes reshaping walk makes
-      // it reachable by adding use edges. So, we will NOT count Con nodes
-      // as dead to be conservative about the dead node count at any
-      // given time.
-    }
+      } // if (!dead->is_Con())
+    } // if (progress_state == PROCESS_INPUTS)
 
     // Aggressively kill globally dead uses
     // (Rather than pushing all the outs at once, we push one at a time,
     // plus the parent to resume later, because of the indefinite number
     // of edge deletions per loop trip.)
     if (dead->outcnt() > 0) {
-      // Recursively remove
+      // Recursively remove output edges
       _stack.push(dead->raw_out(0), PROCESS_INPUTS);
     } else {
+      // Finished disconnecting all input and output edges.
       _stack.pop();
+      // Remove dead node from iterative worklist
+      _worklist.remove(dead);
+      // Constant node that has no out-edges and has only one in-edge from
+      // root is usually dead. However, sometimes reshaping walk makes
+      // it reachable by adding use edges. So, we will NOT count Con nodes
+      // as dead to be conservative about the dead node count at any
+      // given time.
+      if (!dead->is_Con()) {
+        C->record_dead_node(dead->_idx);
+      }
+      if (dead->is_macro()) {
+        C->remove_macro_node(dead);
+      }
+      if (dead->is_expensive()) {
+        C->remove_expensive_node(dead);
+      }
     }
-  }
+  } // while (_stack.is_nonempty())
 }
 
 //------------------------------subsume_node-----------------------------------
--- a/src/share/vm/prims/jvmtiEnter.xsl	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/vm/prims/jvmtiEnter.xsl	Fri Apr 05 10:32:51 2013 -0700
@@ -770,7 +770,7 @@
 </xsl:text>
     <xsl:apply-templates select=".." mode="traceError">     
       <xsl:with-param name="err">JVMTI_ERROR_INVALID_THREAD</xsl:with-param>
-      <xsl:with-param name="comment"> - jthread resolved to NULL - jthread = %0x%x</xsl:with-param>
+      <xsl:with-param name="comment"> - jthread resolved to NULL - jthread = 0x%x</xsl:with-param>
       <xsl:with-param name="extraValue">, <xsl:value-of select="$name"/></xsl:with-param>
     </xsl:apply-templates>
     <xsl:text>
@@ -779,7 +779,7 @@
 </xsl:text>
     <xsl:apply-templates select=".." mode="traceError">     
       <xsl:with-param name="err">JVMTI_ERROR_INVALID_THREAD</xsl:with-param>
-      <xsl:with-param name="comment"> - oop is not a thread - jthread = %0x%x</xsl:with-param>
+      <xsl:with-param name="comment"> - oop is not a thread - jthread = 0x%x</xsl:with-param>
       <xsl:with-param name="extraValue">, <xsl:value-of select="$name"/></xsl:with-param>
     </xsl:apply-templates>
     <xsl:text>
@@ -791,7 +791,7 @@
       <xsl:with-param name="err">
         <xsl:text>JVMTI_ERROR_THREAD_NOT_ALIVE</xsl:text>
       </xsl:with-param>
-      <xsl:with-param name="comment"> - not a Java thread - jthread = %0x%x</xsl:with-param>
+      <xsl:with-param name="comment"> - not a Java thread - jthread = 0x%x</xsl:with-param>
       <xsl:with-param name="extraValue">, <xsl:value-of select="$name"/></xsl:with-param>
     </xsl:apply-templates>
     <xsl:text>
@@ -835,7 +835,7 @@
 </xsl:text>
     <xsl:apply-templates select=".." mode="traceError">     
       <xsl:with-param name="err">JVMTI_ERROR_ILLEGAL_ARGUMENT</xsl:with-param>
-      <xsl:with-param name="comment"> - negative depth - jthread = %0x%x</xsl:with-param>
+      <xsl:with-param name="comment"> - negative depth - jthread = 0x%x</xsl:with-param>
       <xsl:with-param name="extraValue">, <xsl:value-of select="$name"/></xsl:with-param>
     </xsl:apply-templates>
     <xsl:text>
--- a/src/share/vm/runtime/thread.hpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/vm/runtime/thread.hpp	Fri Apr 05 10:32:51 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
@@ -1274,6 +1274,7 @@
   void enable_stack_red_zone();
   void disable_stack_red_zone();
 
+  inline bool stack_guard_zone_unused();
   inline bool stack_yellow_zone_disabled();
   inline bool stack_yellow_zone_enabled();
 
@@ -1741,6 +1742,10 @@
   return (CompilerThread*)this;
 }
 
+inline bool JavaThread::stack_guard_zone_unused() {
+  return _stack_guard_state == stack_guard_unused;
+}
+
 inline bool JavaThread::stack_yellow_zone_disabled() {
   return _stack_guard_state == stack_guard_yellow_disabled;
 }
--- a/src/share/vm/runtime/vm_operations.hpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/vm/runtime/vm_operations.hpp	Fri Apr 05 10:32:51 2013 -0700
@@ -95,6 +95,7 @@
   template(ReportJavaOutOfMemory)                 \
   template(JFRCheckpoint)                         \
   template(Exit)                                  \
+  template(LinuxDllLoad)                          \
 
 class VM_Operation: public CHeapObj<mtInternal> {
  public:
--- a/src/share/vm/services/memReporter.cpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/vm/services/memReporter.cpp	Fri Apr 05 10:32:51 2013 -0700
@@ -419,7 +419,7 @@
       _output->print_cr("[" PTR_FORMAT "] %s+0x%x", pc, buf, offset);
       _output->print("%28s", " ");
     } else {
-      _output->print("[" PTR_FORMAT "]%18s", " ");
+      _output->print("[" PTR_FORMAT "]%18s", pc, " ");
     }
 
     _output->print_cr("(mmap: reserved=%d%s, committed=%d%s)",
@@ -596,7 +596,7 @@
         _output->print_cr("[" PTR_FORMAT "] %s+0x%x", pc, buf, offset);
         _output->print("%28s", " ");
       } else {
-        _output->print("[" PTR_FORMAT "]%18s", " ");
+        _output->print("[" PTR_FORMAT "]%18s", pc, " ");
       }
     }
 
--- a/src/share/vm/trace/trace.xml	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/vm/trace/trace.xml	Fri Apr 05 10:32:51 2013 -0700
@@ -203,6 +203,11 @@
       <structvalue type="CopyFailed" field="data" label="data"/>
     </event>
 
+    <event id="ConcurrentModeFailure" path="vm/gc/detailed/concurrent_mode_failure" label="Concurrent Mode Failure"
+           is_instant="true" description="Concurrent Mode failed">
+      <value type="ULONG" field="gcId" label="GC ID" relation="GC_ID"/>
+    </event>
+
     <event id="GCPhasePause" path="vm/gc/phases/pause" label="GC Phase Pause">
       <value type="ULONG" field="gcId" label="GC ID" relation="GC_ID"/>
       <value type="UTF8" field="name" label="Name" />
--- a/src/share/vm/utilities/elfFile.cpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/vm/utilities/elfFile.cpp	Fri Apr 05 10:32:51 2013 -0700
@@ -197,4 +197,28 @@
   return NULL;
 }
 
+#ifdef LINUX
+bool ElfFile::specifies_noexecstack() {
+  Elf_Phdr phdr;
+  if (!m_file)  return true;
+
+  if (!fseek(m_file, m_elfHdr.e_phoff, SEEK_SET)) {
+    for (int index = 0; index < m_elfHdr.e_phnum; index ++) {
+      if (fread((void*)&phdr, sizeof(Elf_Phdr), 1, m_file) != 1) {
+        m_status = NullDecoder::file_invalid;
+        return false;
+      }
+      if (phdr.p_type == PT_GNU_STACK) {
+        if (phdr.p_flags == (PF_R | PF_W))  {
+          return true;
+        } else {
+          return false;
+        }
+      }
+    }
+  }
+  return false;
+}
+#endif
+
 #endif // _WINDOWS
--- a/src/share/vm/utilities/elfFile.hpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/vm/utilities/elfFile.hpp	Fri Apr 05 10:32:51 2013 -0700
@@ -43,6 +43,7 @@
 
 typedef Elf64_Ehdr      Elf_Ehdr;
 typedef Elf64_Shdr      Elf_Shdr;
+typedef Elf64_Phdr      Elf_Phdr;
 typedef Elf64_Sym       Elf_Sym;
 
 #if !defined(_ALLBSD_SOURCE) || defined(__APPLE__)
@@ -59,6 +60,7 @@
 
 typedef Elf32_Ehdr      Elf_Ehdr;
 typedef Elf32_Shdr      Elf_Shdr;
+typedef Elf32_Phdr      Elf_Phdr;
 typedef Elf32_Sym       Elf_Sym;
 
 #if !defined(_ALLBSD_SOURCE) || defined(__APPLE__)
@@ -123,6 +125,14 @@
    ElfFile*  next() const { return m_next; }
    void set_next(ElfFile* file) { m_next = file; }
 
+ public:
+  // Returns true if the elf file is marked NOT to require an executable stack,
+  // or if the file could not be opened.
+  // Returns false if the elf file requires an executable stack, the stack flag
+  // is not set at all, or if the file can not be read.
+  // On systems other than linux it always returns false.
+  bool specifies_noexecstack() NOT_LINUX({ return false; });
+
  protected:
     ElfFile*         m_next;
 
--- a/src/share/vm/utilities/numberSeq.cpp	Fri Apr 05 09:10:28 2013 -0700
+++ b/src/share/vm/utilities/numberSeq.cpp	Fri Apr 05 10:32:51 2013 -0700
@@ -245,7 +245,7 @@
 
 void NumberSeq::dump_on(outputStream* s) {
   AbsSeq::dump_on(s);
-  s->print_cr("\t\t _last = %7.3f, _maximum = %7.3f");
+  s->print_cr("\t\t _last = %7.3f, _maximum = %7.3f", _last, _maximum);
 }
 
 void TruncatedSeq::dump_on(outputStream* s) {
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/gc/heap_inspection/TestPrintClassHistogram.java	Fri Apr 05 10:32:51 2013 -0700
@@ -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.
+ */
+
+/*
+ * @test TestPrintClassHistogram
+ * @bug 8010294
+ * @summary Checks that a class histogram can be printed both before and after
+ *          a GC
+ * @library /testlibrary
+ * @run main/othervm TestPrintClassHistogram launch BeforeGC
+ * @run main/othervm TestPrintClassHistogram launch AfterGC
+ * @run main/othervm TestPrintClassHistogram launch BeforeGC AfterGC
+ */
+
+import java.util.List;
+import java.util.ArrayList;
+import java.util.Arrays;
+
+import com.oracle.java.testlibrary.OutputAnalyzer;
+import com.oracle.java.testlibrary.ProcessTools;
+
+/* This test uses a "trick" to be able to analyze the output of the test:
+ *
+ *   The test starts a java process that runs the same code, but the first
+ *   argument is different ("run" instead of "launch"). The change of flags
+ *   will run the test code instead of launching the test again.
+ */
+public class TestPrintClassHistogram {
+    public static void main(String[] args) throws Exception {
+        if (shouldLaunchTest(args)) {
+            launchTest(args);
+            return;
+        }
+
+        // This is the actual test code
+        System.gc();
+    }
+
+    private static boolean shouldLaunchTest(String[] cmdlineArguments) {
+        return cmdlineArguments[0].equals("launch");
+    }
+
+    private static void launchTest(String[] args) throws Exception {
+        String[] testArgs = createTestArguments(args);
+        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(testArgs);
+
+        OutputAnalyzer output = new OutputAnalyzer(pb.start());
+        output.shouldNotContain("WARNING");
+
+        // There will always be at least one java.lang.Class instance
+        output.shouldContain("java.lang.Class");
+
+        // There will always be at least one java.lang.String instance
+        output.shouldContain("java.lang.String");
+
+        output.shouldHaveExitValue(0);
+    }
+
+    private static String[] createTestArguments(String[] cmdlineArguments) {
+        List<String> cmdlineArgs = Arrays.asList(cmdlineArguments);
+        List<String> testArgs = new ArrayList<String>();
+
+        if (cmdlineArgs.contains("BeforeGC")) {
+            testArgs.add("-XX:+PrintClassHistogramBeforeFullGC");
+        }
+        if (cmdlineArgs.contains("AfterGC")) {
+            testArgs.add("-XX:+PrintClassHistogramAfterFullGC");
+        }
+
+        testArgs.add("TestPrintClassHistogram");
+        testArgs.add("run");
+
+        return testArgs.toArray(new String[testArgs.size()]);
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/runtime/7107135/Test.java	Fri Apr 05 10:32:51 2013 -0700
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2002-2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011 SAP AG.  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.
+ */
+
+class Test {
+
+    static boolean loadLib(String libName){
+        try {
+            System.loadLibrary(libName);
+            System.out.println("Loaded library "+ libName + ".");
+            return true;
+        } catch (SecurityException e) {
+            System.out.println("loadLibrary(\"" + libName + "\") throws: " + e + "\n");
+        } catch (UnsatisfiedLinkError e) {
+            System.out.println("loadLibrary(\"" + libName + "\") throws: " + e + "\n");
+        }
+        return false;
+    }
+
+    public static int counter = 1;
+
+    static int Runner() {
+        counter = counter * -1;
+        int i = counter;
+        if(counter < 2) counter += Runner();
+        return i;
+    }
+
+    public static int run() {
+        try{
+            Runner();
+        } catch (StackOverflowError e) {
+            System.out.println("Caught stack overflow error.");
+            return 0;
+        } catch (OutOfMemoryError e) {
+            return 0;
+        }
+        return 2;
+    }
+
+    public static void main(String argv[]) {
+        loadLib(argv[0]);
+        System.exit(run());
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/runtime/7107135/Test7107135.sh	Fri Apr 05 10:32:51 2013 -0700
@@ -0,0 +1,98 @@
+#!/bin/sh
+
+#
+#  Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
+#  Copyright (c) 2011 SAP AG.  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 Test7107135.sh
+## @bug 7107135
+## @summary Stack guard pages lost after loading library with executable stack.
+## @run shell Test7107135.sh
+##
+
+if [ "${TESTSRC}" = "" ]
+then TESTSRC=.
+fi
+
+if [ "${TESTJAVA}" = "" ]
+then
+  PARENT=`dirname \`which java\``
+  TESTJAVA=`dirname ${PARENT}`
+  echo "TESTJAVA not set, selecting " ${TESTJAVA}
+  echo "If this is incorrect, try setting the variable manually."
+fi
+
+BIT_FLAG=""
+
+# set platform-dependent variables
+OS=`uname -s`
+case "$OS" in
+  Linux)
+    NULL=/dev/null
+    PS=":"
+    FS="/"
+    ;;
+  *)
+    NULL=NUL
+    PS=";"
+    FS="\\"
+    echo "Test passed; only valid for Linux"
+    exit 0;
+    ;;
+esac
+
+ARCH=`uname -m`
+
+THIS_DIR=`pwd`
+
+cp ${TESTSRC}${FS}*.java ${THIS_DIR}
+${TESTJAVA}${FS}bin${FS}javac *.java
+
+gcc -fPIC -shared -c -o test.o -I${TESTJAVA}${FS}include -I${TESTJAVA}${FS}include${FS}linux ${TESTSRC}${FS}test.c
+ld -shared -z   execstack -o libtest-rwx.so test.o
+ld -shared -z noexecstack -o libtest-rw.so  test.o
+
+
+LD_LIBRARY_PATH=${THIS_DIR}
+echo   LD_LIBRARY_PATH = ${LD_LIBRARY_PATH}
+export LD_LIBRARY_PATH
+
+# This should not fail.
+echo Check testprogram. Expected to pass:
+echo ${TESTJAVA}${FS}bin${FS}java -cp ${THIS_DIR} Test test-rw
+${TESTJAVA}${FS}bin${FS}java -cp ${THIS_DIR} Test test-rw
+
+echo
+echo Test changing of stack protection:
+echo ${TESTJAVA}${FS}bin${FS}java -cp ${THIS_DIR} Test test-rw
+${TESTJAVA}${FS}bin${FS}java -cp ${THIS_DIR} Test test-rwx
+
+if [ "$?" == "0" ]
+then
+  echo
+  echo ${TESTJAVA}${FS}bin${FS}java -cp ${THIS_DIR} TestMT test-rwx
+  ${TESTJAVA}${FS}bin${FS}java -cp ${THIS_DIR} TestMT test-rwx
+fi
+
+exit $?
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/runtime/7107135/TestMT.java	Fri Apr 05 10:32:51 2013 -0700
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2002-2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011 SAP AG.  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.
+ */
+
+class TestMT {
+
+    static boolean loadLib(String libName) {
+        try {
+            System.loadLibrary(libName);
+            System.out.println("Loaded library "+ libName + ".");
+            return true;
+        } catch (SecurityException e) {
+            System.out.println("loadLibrary(\"" + libName + "\") throws: " + e + "\n");
+        } catch (UnsatisfiedLinkError e) {
+            System.out.println("loadLibrary(\"" + libName + "\") throws: " + e + "\n");
+        }
+        return false;
+    }
+
+    public static int counter        = 1;
+    static int Runner() {
+        counter = counter * -1;
+        int i = counter;
+        if (counter < 2) counter += Runner();
+        return i;
+    }
+
+    public static int run(String msg) {
+        try {
+            Runner();
+        } catch (StackOverflowError e) {
+            System.out.println(msg + " caught stack overflow error.");
+            return 0;
+        } catch (OutOfMemoryError e) {
+            return 0;
+        }
+        return 2;
+    }
+
+    public static void main(String argv[]) {
+        try {
+            for (int i = 0; i < 20; i++) {
+                Thread t = new DoStackOverflow("SpawnedThread " + i);
+                t.start();
+            }
+            run("Main thread");
+            loadLib("test-rwx");
+            run("Main thread");
+        } catch (Exception e) {
+            System.out.println(e);
+        }
+    }
+
+    static class DoStackOverflow extends Thread {
+        public DoStackOverflow(String name) {
+            super(name);
+        }
+        public void run() {
+            for (int i = 0; i < 10; ++i) {
+                TestMT.run(getName());
+                yield();
+            }
+        }
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/runtime/7107135/test.c	Fri Apr 05 10:32:51 2013 -0700
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2002-2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011 SAP AG.  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.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include "jni.h"
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+JNIEXPORT jint JNICALL Java_Test_someMethod(JNIEnv *env, jobject mainObject) {
+  return 3;
+}
+
+#ifdef __cplusplus
+}
+#endif
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/runtime/8010389/VMThreadDlopen.java	Fri Apr 05 10:32:51 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
+        }
+    }
+}