changeset 3092:dcc292399a39 hs23-b11

Merge
author amurillo
date Fri, 20 Jan 2012 16:56:31 -0800
parents 338d438ee229 50d9b7a0072c
children e850d8e7ea54
files src/os/bsd/vm/decoder_bsd.cpp
diffstat 68 files changed, 918 insertions(+), 490 deletions(-) [+]
line wrap: on
line diff
--- a/make/Makefile	Fri Jan 20 13:08:43 2012 -0800
+++ b/make/Makefile	Fri Jan 20 16:56:31 2012 -0800
@@ -367,7 +367,7 @@
 $(EXPORT_LIB_DIR)/%.jar: $(GEN_DIR)/%.jar
 	$(install-file)
 
-# Include files (jvmti.h, jvmticmlr.h, jni.h, $(JDK_INCLUDE_SUBDIR)/jni_md.h, jmm.h)
+# Include files (jvmti.h, jvmticmlr.h, jni.h, $(JDK_INCLUDE_SUBDIR)/jni_md.h, jmm.h, jfr.h)
 $(EXPORT_INCLUDE_DIR)/%: $(GEN_DIR)/jvmtifiles/%
 	$(install-file)
 
@@ -384,6 +384,16 @@
 $(EXPORT_INCLUDE_DIR)/%: $(HS_SRC_DIR)/share/vm/services/%
 	$(install-file)
 
+JFR_EXISTS=$(shell if [ -d $(HS_ALT_SRC) ]; then echo 1; else echo 0; fi)
+# export jfr.h
+ifeq ($JFR_EXISTS,1)
+$(EXPORT_INCLUDE_DIR)/%: $(HS_ALT_SRC)/share/vm/jfr/agent/%
+	$(install-file)
+else
+$(EXPORT_INCLUDE_DIR)/jfr.h:
+	
+endif
+
 # Doc files (jvmti.html)
 $(EXPORT_DOCS_DIR)/platform/jvmti/%: $(DOCS_DIR)/%
 	$(install-file)
--- a/make/bsd/makefiles/vm.make	Fri Jan 20 13:08:43 2012 -0800
+++ b/make/bsd/makefiles/vm.make	Fri Jan 20 16:56:31 2012 -0800
@@ -96,6 +96,10 @@
 CPPFLAGS += -DDEFAULT_LIBPATH="\"$(DEFAULT_LIBPATH)\""
 endif
 
+ifndef JAVASE_EMBEDDED
+CFLAGS += -DINCLUDE_TRACE
+endif
+
 # CFLAGS_WARN holds compiler options to suppress/enable warnings.
 CFLAGS += $(CFLAGS_WARN/BYFILE)
 
@@ -147,6 +151,12 @@
 SOURCE_PATHS+=$(HS_COMMON_SRC)/cpu/$(Platform_arch)/vm
 SOURCE_PATHS+=$(HS_COMMON_SRC)/os_cpu/$(Platform_os_arch)/vm
 
+ifndef JAVASE_EMBEDDED
+SOURCE_PATHS+=$(shell if [ -d $(HS_ALT_SRC)/share/vm/jfr ]; then \
+  find $(HS_ALT_SRC)/share/vm/jfr -type d; \
+  fi)
+endif
+
 CORE_PATHS=$(foreach path,$(SOURCE_PATHS),$(call altsrc,$(path)) $(path))
 CORE_PATHS+=$(GENERATED)/jvmtifiles
 
--- a/make/defs.make	Fri Jan 20 13:08:43 2012 -0800
+++ b/make/defs.make	Fri Jan 20 16:56:31 2012 -0800
@@ -294,3 +294,7 @@
 EXPORT_LIST += $(EXPORT_INCLUDE_DIR)/jni.h
 EXPORT_LIST += $(EXPORT_INCLUDE_DIR)/$(JDK_INCLUDE_SUBDIR)/jni_md.h
 EXPORT_LIST += $(EXPORT_INCLUDE_DIR)/jmm.h
+
+ifndef JAVASE_EMBEDDED
+EXPORT_LIST += $(EXPORT_INCLUDE_DIR)/jfr.h
+endif
--- a/make/hotspot_version	Fri Jan 20 13:08:43 2012 -0800
+++ b/make/hotspot_version	Fri Jan 20 16:56:31 2012 -0800
@@ -35,7 +35,7 @@
 
 HS_MAJOR_VER=23
 HS_MINOR_VER=0
-HS_BUILD_NUMBER=10
+HS_BUILD_NUMBER=11
 
 JDK_MAJOR_VER=1
 JDK_MINOR_VER=8
--- a/make/linux/makefiles/vm.make	Fri Jan 20 13:08:43 2012 -0800
+++ b/make/linux/makefiles/vm.make	Fri Jan 20 16:56:31 2012 -0800
@@ -98,6 +98,10 @@
   ${JRE_VERSION}     \
   ${VM_DISTRO}
 
+ifndef JAVASE_EMBEDDED
+CFLAGS += -DINCLUDE_TRACE
+endif
+
 # CFLAGS_WARN holds compiler options to suppress/enable warnings.
 CFLAGS += $(CFLAGS_WARN/BYFILE)
 
@@ -143,6 +147,12 @@
 SOURCE_PATHS+=$(HS_COMMON_SRC)/cpu/$(Platform_arch)/vm
 SOURCE_PATHS+=$(HS_COMMON_SRC)/os_cpu/$(Platform_os_arch)/vm
 
+ifndef JAVASE_EMBEDDED
+SOURCE_PATHS+=$(shell if [ -d $(HS_ALT_SRC)/share/vm/jfr ]; then \
+  find $(HS_ALT_SRC)/share/vm/jfr -type d; \
+  fi)
+endif
+
 CORE_PATHS=$(foreach path,$(SOURCE_PATHS),$(call altsrc,$(path)) $(path))
 CORE_PATHS+=$(GENERATED)/jvmtifiles
 
--- a/make/solaris/makefiles/vm.make	Fri Jan 20 13:08:43 2012 -0800
+++ b/make/solaris/makefiles/vm.make	Fri Jan 20 16:56:31 2012 -0800
@@ -93,7 +93,7 @@
 CFLAGS += $(CFLAGS/NOEX)
 
 # Extra flags from gnumake's invocation or environment
-CFLAGS += $(EXTRA_CFLAGS)
+CFLAGS += $(EXTRA_CFLAGS) -DINCLUDE_TRACE
 
 # Math Library (libm.so), do not use -lm.
 #    There might be two versions of libm.so on the build system:
@@ -160,6 +160,10 @@
 SOURCE_PATHS+=$(HS_COMMON_SRC)/cpu/$(Platform_arch)/vm
 SOURCE_PATHS+=$(HS_COMMON_SRC)/os_cpu/$(Platform_os_arch)/vm
 
+SOURCE_PATHS+=$(shell if [ -d $(HS_ALT_SRC)/share/vm/jfr ]; then \
+  find $(HS_ALT_SRC)/share/vm/jfr -type d; \
+  fi)
+
 CORE_PATHS=$(foreach path,$(SOURCE_PATHS),$(call altsrc,$(path)) $(path))
 CORE_PATHS+=$(GENERATED)/jvmtifiles
 
--- a/make/windows/build.bat	Fri Jan 20 13:08:43 2012 -0800
+++ b/make/windows/build.bat	Fri Jan 20 16:56:31 2012 -0800
@@ -35,6 +35,8 @@
 if %errorlevel% == 0 goto isia64
 cl 2>&1 | grep "AMD64" >NUL
 if %errorlevel% == 0 goto amd64
+cl 2>&1 | grep "x64" >NUL
+if %errorlevel% == 0 goto amd64
 set ARCH=x86
 set BUILDARCH=i486
 set Platform_arch=x86
--- a/make/windows/create_obj_files.sh	Fri Jan 20 13:08:43 2012 -0800
+++ b/make/windows/create_obj_files.sh	Fri Jan 20 16:56:31 2012 -0800
@@ -73,6 +73,13 @@
 
 BASE_PATHS="${BASE_PATHS} ${GENERATED}/jvmtifiles"
 
+if [ -d "${ALTSRC}/share/vm/jfr" ]; then
+  BASE_PATHS="${BASE_PATHS} ${ALTSRC}/share/vm/jfr/agent"
+  BASE_PATHS="${BASE_PATHS} ${ALTSRC}/share/vm/jfr/agent/isolated_deps/util"
+  BASE_PATHS="${BASE_PATHS} ${ALTSRC}/share/vm/jfr/jvm"
+  BASE_PATHS="${BASE_PATHS} ${ALTSRC}/share/vm/jfr"
+fi
+
 CORE_PATHS="${BASE_PATHS}"
 # shared is already in BASE_PATHS. Should add vm/memory but that one is also in BASE_PATHS.
 if [ -d "${ALTSRC}/share/vm/gc_implementation" ]; then
--- a/make/windows/makefiles/projectcreator.make	Fri Jan 20 13:08:43 2012 -0800
+++ b/make/windows/makefiles/projectcreator.make	Fri Jan 20 16:56:31 2012 -0800
@@ -58,7 +58,8 @@
         -absoluteInclude $(HOTSPOTBUILDSPACE)/%f/generated \
         -ignorePath $(HOTSPOTBUILDSPACE)/%f/generated \
         -ignorePath src\share\vm\adlc \
-        -ignorePath src\share\vm\shark
+        -ignorePath src\share\vm\shark \
+        -ignorePath posix
 
 # This is referenced externally by both the IDE and batch builds
 ProjectCreatorOptions=
@@ -88,7 +89,7 @@
         -jdkTargetRoot $(HOTSPOTJDKDIST) \
         -define ALIGN_STACK_FRAMES \
         -define VM_LITTLE_ENDIAN \
-        -prelink  "" "Generating vm.def..." "cd $(HOTSPOTBUILDSPACE)\%f\%b	set HOTSPOTMKSHOME=$(HOTSPOTMKSHOME)	$(HOTSPOTMKSHOME)\sh $(HOTSPOTWORKSPACE)\make\windows\build_vm_def.sh $(LINK_VER)" \
+        -prelink  "" "Generating vm.def..." "cd $(HOTSPOTBUILDSPACE)\%f\%b	set HOTSPOTMKSHOME=$(HOTSPOTMKSHOME)	set JAVA_HOME=$(HOTSPOTJDKDIST)	$(HOTSPOTMKSHOME)\sh $(HOTSPOTWORKSPACE)\make\windows\build_vm_def.sh $(LINK_VER)" \
         -postbuild "" "Building hotspot.exe..." "cd $(HOTSPOTBUILDSPACE)\%f\%b	set HOTSPOTMKSHOME=$(HOTSPOTMKSHOME)	nmake -f $(HOTSPOTWORKSPACE)\make\windows\projectfiles\common\Makefile LOCAL_MAKE=$(HOTSPOTBUILDSPACE)\%f\local.make JAVA_HOME=$(HOTSPOTJDKDIST) launcher" \
         -ignoreFile jsig.c \
         -ignoreFile jvmtiEnvRecommended.cpp \
--- a/make/windows/makefiles/vm.make	Fri Jan 20 13:08:43 2012 -0800
+++ b/make/windows/makefiles/vm.make	Fri Jan 20 16:56:31 2012 -0800
@@ -19,7 +19,7 @@
 # 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.
-#  
+#
 #
 
 # Resource file containing VERSIONINFO
@@ -30,7 +30,7 @@
 COMMONSRC=$(WorkSpace)\src
 ALTSRC=$(WorkSpace)\src\closed
 
-!ifdef RELEASE 
+!ifdef RELEASE
 !ifdef DEVELOP
 CPP_FLAGS=$(CPP_FLAGS) /D "DEBUG"
 !else
@@ -74,6 +74,10 @@
 CPP_FLAGS=$(CPP_FLAGS) /D "HOTSPOT_BUILD_USER=\"$(BuildUser)\""
 CPP_FLAGS=$(CPP_FLAGS) /D "HOTSPOT_VM_DISTRO=\"$(HOTSPOT_VM_DISTRO)\""
 
+!ifndef JAVASE_EMBEDDED
+CPP_FLAGS=$(CPP_FLAGS) /D "INCLUDE_TRACE"
+!endif
+
 CPP_FLAGS=$(CPP_FLAGS) $(CPP_INCLUDE_DIRS)
 
 # Define that so jni.h is on correct side
@@ -97,7 +101,7 @@
 !endif
 
 # If you modify exports below please do the corresponding changes in
-# src/share/tools/ProjectCreator/WinGammaPlatformVC7.java 
+# src/share/tools/ProjectCreator/WinGammaPlatformVC7.java
 LINK_FLAGS=$(LINK_FLAGS) $(STACK_SIZE) /subsystem:windows /dll /base:0x8000000 \
   /export:JNI_GetDefaultJavaVMInitArgs       \
   /export:JNI_CreateJavaVM                   \
@@ -170,6 +174,7 @@
 VM_PATH=$(VM_PATH);$(WorkSpace)/src/share/vm/prims
 VM_PATH=$(VM_PATH);$(WorkSpace)/src/share/vm/runtime
 VM_PATH=$(VM_PATH);$(WorkSpace)/src/share/vm/services
+VM_PATH=$(VM_PATH);$(WorkSpace)/src/share/vm/trace
 VM_PATH=$(VM_PATH);$(WorkSpace)/src/share/vm/utilities
 VM_PATH=$(VM_PATH);$(WorkSpace)/src/share/vm/libadt
 VM_PATH=$(VM_PATH);$(WorkSpace)/src/os/windows/vm
@@ -177,6 +182,13 @@
 VM_PATH=$(VM_PATH);$(WorkSpace)/src/cpu/$(Platform_arch)/vm
 VM_PATH=$(VM_PATH);$(WorkSpace)/src/share/vm/opto
 
+!if exists($(ALTSRC)\share\vm\jfr)
+VM_PATH=$(VM_PATH);$(ALTSRC)/share/vm/jfr/agent
+VM_PATH=$(VM_PATH);$(ALTSRC)/share/vm/jfr/agent/isolated_deps/util
+VM_PATH=$(VM_PATH);$(ALTSRC)/share/vm/jfr/jvm
+VM_PATH=$(VM_PATH);$(ALTSRC)/share/vm/jfr
+!endif
+
 VM_PATH={$(VM_PATH)}
 
 # Special case files not using precompiled header files.
@@ -263,6 +275,9 @@
 {$(COMMONSRC)\share\vm\services}.cpp.obj::
         $(CPP) $(CPP_FLAGS) $(CPP_USE_PCH) /c $<
 
+{$(COMMONSRC)\share\vm\trace}.cpp.obj::
+        $(CPP) $(CPP_FLAGS) $(CPP_USE_PCH) /c $<
+
 {$(COMMONSRC)\share\vm\utilities}.cpp.obj::
         $(CPP) $(CPP_FLAGS) $(CPP_USE_PCH) /c $<
 
@@ -340,6 +355,9 @@
 {$(ALTSRC)\share\vm\services}.cpp.obj::
         $(CPP) $(CPP_FLAGS) $(CPP_USE_PCH) /c $<
 
+{$(ALTSRC)\share\vm\trace}.cpp.obj::
+        $(CPP) $(CPP_FLAGS) $(CPP_USE_PCH) /c $<
+
 {$(ALTSRC)\share\vm\utilities}.cpp.obj::
         $(CPP) $(CPP_FLAGS) $(CPP_USE_PCH) /c $<
 
@@ -371,6 +389,18 @@
 {..\generated\jvmtifiles}.cpp.obj::
         $(CPP) $(CPP_FLAGS) $(CPP_USE_PCH) /c $<
 
+{$(ALTSRC)\share\vm\jfr}.cpp.obj::
+        $(CPP) $(CPP_FLAGS) $(CPP_USE_PCH) /c $<
+
+{$(ALTSRC)\share\vm\jfr\agent}.cpp.obj::
+        $(CPP) $(CPP_FLAGS) $(CPP_USE_PCH) /c $<
+
+{$(ALTSRC)\share\vm\jfr\agent\isolated_deps\util}.cpp.obj::
+        $(CPP) $(CPP_FLAGS) $(CPP_USE_PCH) /c $<
+
+{$(ALTSRC)\share\vm\jfr\jvm}.cpp.obj::
+        $(CPP) $(CPP_FLAGS) $(CPP_USE_PCH) /c $<
+
 default::
 
 _build_pch_file.obj:
--- a/src/cpu/sparc/vm/c1_LIRAssembler_sparc.cpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/cpu/sparc/vm/c1_LIRAssembler_sparc.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -391,7 +391,7 @@
   __ call(Runtime1::entry_for(Runtime1::handle_exception_from_callee_id), relocInfo::runtime_call_type);
   __ delayed()->nop();
   __ should_not_reach_here();
-  assert(code_offset() - offset <= exception_handler_size, "overflow");
+  guarantee(code_offset() - offset <= exception_handler_size, "overflow");
   __ end_a_stub();
 
   return offset;
@@ -474,8 +474,7 @@
   AddressLiteral deopt_blob(SharedRuntime::deopt_blob()->unpack());
   __ JUMP(deopt_blob, G3_scratch, 0); // sethi;jmp
   __ delayed()->nop();
-  assert(code_offset() - offset <= deopt_handler_size, "overflow");
-  debug_only(__ stop("should have gone to the caller");)
+  guarantee(code_offset() - offset <= deopt_handler_size, "overflow");
   __ end_a_stub();
 
   return offset;
--- a/src/cpu/sparc/vm/c1_LIRAssembler_sparc.hpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/cpu/sparc/vm/c1_LIRAssembler_sparc.hpp	Fri Jan 20 16:56:31 2012 -0800
@@ -69,7 +69,7 @@
 #else
          call_stub_size = 20,
 #endif // _LP64
-         exception_handler_size = DEBUG_ONLY(1*K) NOT_DEBUG(10*4),
-         deopt_handler_size = DEBUG_ONLY(1*K) NOT_DEBUG(10*4) };
+         exception_handler_size = DEBUG_ONLY(1*K) NOT_DEBUG(128),
+         deopt_handler_size = DEBUG_ONLY(1*K) NOT_DEBUG(64)  };
 
 #endif // CPU_SPARC_VM_C1_LIRASSEMBLER_SPARC_HPP
--- a/src/cpu/sparc/vm/frame_sparc.inline.hpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/cpu/sparc/vm/frame_sparc.inline.hpp	Fri Jan 20 16:56:31 2012 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2012, 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
@@ -82,6 +82,8 @@
 
 inline intptr_t*    frame::sender_sp() const  { return fp(); }
 
+inline intptr_t* frame::real_fp() const { return fp(); }
+
 // Used only in frame::oopmapreg_to_location
 // This return a value in VMRegImpl::slot_size
 inline int frame::pd_oop_map_offset_adjustment() const {
--- a/src/cpu/sparc/vm/methodHandles_sparc.cpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/cpu/sparc/vm/methodHandles_sparc.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -1045,7 +1045,7 @@
          |(1<<java_lang_invoke_AdapterMethodHandle::OP_DROP_ARGS)
           // OP_COLLECT_ARGS is below...
          |(1<<java_lang_invoke_AdapterMethodHandle::OP_SPREAD_ARGS)
-         |(!UseRicochetFrames ? 0 :
+         |(
            java_lang_invoke_MethodTypeForm::vmlayout_offset_in_bytes() <= 0 ? 0 :
            ((1<<java_lang_invoke_AdapterMethodHandle::OP_PRIM_TO_REF)
            |(1<<java_lang_invoke_AdapterMethodHandle::OP_COLLECT_ARGS)
--- a/src/cpu/x86/vm/c1_LIRAssembler_x86.cpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/cpu/x86/vm/c1_LIRAssembler_x86.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -406,7 +406,7 @@
   // search an exception handler (rax: exception oop, rdx: throwing pc)
   __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::handle_exception_from_callee_id)));
   __ should_not_reach_here();
-  assert(code_offset() - offset <= exception_handler_size, "overflow");
+  guarantee(code_offset() - offset <= exception_handler_size, "overflow");
   __ end_a_stub();
 
   return offset;
@@ -490,8 +490,7 @@
 
   __ pushptr(here.addr());
   __ jump(RuntimeAddress(SharedRuntime::deopt_blob()->unpack()));
-
-  assert(code_offset() - offset <= deopt_handler_size, "overflow");
+  guarantee(code_offset() - offset <= deopt_handler_size, "overflow");
   __ end_a_stub();
 
   return offset;
--- a/src/cpu/x86/vm/frame_x86.cpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/cpu/x86/vm/frame_x86.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2012, 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
@@ -675,3 +675,21 @@
   // used to reset the saved FP
   return fp();
 }
+
+intptr_t* frame::real_fp() const {
+  if (_cb != NULL) {
+    // use the frame size if valid
+    int size = _cb->frame_size();
+    if ((size > 0) &&
+        (! is_ricochet_frame())) {
+      // Work-around: ricochet explicitly excluded because frame size is not
+      // constant for the ricochet blob but its frame_size could not, for
+      // some reasons, be declared as <= 0. This potentially confusing
+      // size declaration should be fixed as another CR.
+      return unextended_sp() + size;
+    }
+  }
+  // else rely on fp()
+  assert(! is_compiled_frame(), "unknown compiled frame size");
+  return fp();
+}
--- a/src/cpu/x86/vm/frame_x86.hpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/cpu/x86/vm/frame_x86.hpp	Fri Jan 20 16:56:31 2012 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2012, 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
@@ -188,6 +188,7 @@
   frame(intptr_t* sp, intptr_t* fp);
 
   // accessors for the instance variables
+  // Note: not necessarily the real 'frame pointer' (see real_fp)
   intptr_t*   fp() const { return _fp; }
 
   inline address* sender_pc_addr() const;
--- a/src/cpu/x86/vm/methodHandles_x86.cpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/cpu/x86/vm/methodHandles_x86.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -1005,7 +1005,7 @@
   intptr_t* base_sp = last_sp;
   typedef MethodHandles::RicochetFrame RicochetFrame;
   RicochetFrame* rfp = (RicochetFrame*)((address)saved_bp - RicochetFrame::sender_link_offset_in_bytes());
-  if (!UseRicochetFrames || Universe::heap()->is_in((address) rfp->saved_args_base())) {
+  if (Universe::heap()->is_in((address) rfp->saved_args_base())) {
     // Probably an interpreter frame.
     base_sp = (intptr_t*) saved_bp[frame::interpreter_frame_monitor_block_top_offset];
   }
@@ -1104,7 +1104,7 @@
          |(1<<java_lang_invoke_AdapterMethodHandle::OP_DROP_ARGS)
           //OP_COLLECT_ARGS is below...
          |(1<<java_lang_invoke_AdapterMethodHandle::OP_SPREAD_ARGS)
-         |(!UseRicochetFrames ? 0 :
+         |(
            java_lang_invoke_MethodTypeForm::vmlayout_offset_in_bytes() <= 0 ? 0 :
            ((1<<java_lang_invoke_AdapterMethodHandle::OP_PRIM_TO_REF)
            |(1<<java_lang_invoke_AdapterMethodHandle::OP_COLLECT_ARGS)
--- a/src/cpu/zero/vm/frame_zero.inline.hpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/cpu/zero/vm/frame_zero.inline.hpp	Fri Jan 20 16:56:31 2012 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
  * Copyright 2007, 2008, 2009, 2010 Red Hat, Inc.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -72,6 +72,10 @@
   return fp() + 1;
 }
 
+inline intptr_t* frame::real_fp() const {
+  return fp();
+}
+
 inline intptr_t* frame::link() const {
   ShouldNotCallThis();
 }
--- a/src/cpu/zero/vm/methodHandles_zero.hpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/cpu/zero/vm/methodHandles_zero.hpp	Fri Jan 20 16:56:31 2012 -0800
@@ -29,43 +29,3 @@
   adapter_code_size = 0
 };
 
-#define TARGET_ARCH_NYI_6939861 1
-// ..#ifdef TARGET_ARCH_NYI_6939861
-// ..  // Here are some backward compatible declarations until the 6939861 ports are updated.
-// ..  #define _adapter_flyby    (_EK_LIMIT + 10)
-// ..  #define _adapter_ricochet (_EK_LIMIT + 11)
-// ..  #define _adapter_opt_spread_1    _adapter_opt_spread_1_ref
-// ..  #define _adapter_opt_spread_more _adapter_opt_spread_ref
-// ..  enum {
-// ..    _INSERT_NO_MASK   = -1,
-// ..    _INSERT_REF_MASK  = 0,
-// ..    _INSERT_INT_MASK  = 1,
-// ..    _INSERT_LONG_MASK = 3
-// ..  };
-// ..  static void get_ek_bound_mh_info(EntryKind ek, BasicType& arg_type, int& arg_mask, int& arg_slots) {
-// ..    arg_type = ek_bound_mh_arg_type(ek);
-// ..    arg_mask = 0;
-// ..    arg_slots = type2size[arg_type];;
-// ..  }
-// ..  static void get_ek_adapter_opt_swap_rot_info(EntryKind ek, int& swap_bytes, int& rotate) {
-// ..    int swap_slots = ek_adapter_opt_swap_slots(ek);
-// ..    rotate = ek_adapter_opt_swap_mode(ek);
-// ..    swap_bytes = swap_slots * Interpreter::stackElementSize;
-// ..  }
-// ..  static int get_ek_adapter_opt_spread_info(EntryKind ek) {
-// ..    return ek_adapter_opt_spread_count(ek);
-// ..  }
-// ..
-// ..  static void insert_arg_slots(MacroAssembler* _masm,
-// ..                               RegisterOrConstant arg_slots,
-// ..                               int arg_mask,
-// ..                               Register argslot_reg,
-// ..                               Register temp_reg, Register temp2_reg, Register temp3_reg = noreg);
-// ..
-// ..  static void remove_arg_slots(MacroAssembler* _masm,
-// ..                               RegisterOrConstant arg_slots,
-// ..                               Register argslot_reg,
-// ..                               Register temp_reg, Register temp2_reg, Register temp3_reg = noreg);
-// ..
-// ..  static void trace_method_handle(MacroAssembler* _masm, const char* adaptername) PRODUCT_RETURN;
-// ..#endif //TARGET_ARCH_NYI_6939861
--- a/src/os/bsd/vm/decoder_bsd.cpp	Fri Jan 20 13:08:43 2012 -0800
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,66 +0,0 @@
-/*
- * Copyright (c) 1997, 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 "prims/jvm.h"
-#include "utilities/decoder.hpp"
-
-#include <cxxabi.h>
-
-#ifdef __APPLE__
-
-void Decoder::initialize() {
-  _initialized = true;
-}
-
-void Decoder::uninitialize() {
-  _initialized = false;
-}
-
-bool Decoder::can_decode_C_frame_in_vm() {
-  return false;
-}
-
-Decoder::decoder_status Decoder::decode(address addr, const char* filepath, char *buf, int buflen, int *offset) {
-  return symbol_not_found;
-}
-
-
-#endif
-
-bool Decoder::demangle(const char* symbol, char *buf, int buflen) {
-  int   status;
-  char* result;
-  size_t size = (size_t)buflen;
-
-  // Don't pass buf to __cxa_demangle. In case of the 'buf' is too small,
-  // __cxa_demangle will call system "realloc" for additional memory, which
-  // may use different malloc/realloc mechanism that allocates 'buf'.
-  if ((result = abi::__cxa_demangle(symbol, NULL, NULL, &status)) != NULL) {
-    jio_snprintf(buf, buflen, "%s", result);
-      // call c library's free
-      ::free(result);
-      return true;
-  }
-  return false;
-}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/os/bsd/vm/decoder_machO.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2011, 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 "precompiled.hpp"
+
+#ifdef __APPLE__
+#include "decoder_machO.hpp"
+#endif
+
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/os/bsd/vm/decoder_machO.hpp	Fri Jan 20 16:56:31 2012 -0800
@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2011, 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.
+ *
+ */
+
+#ifndef OS_BSD_VM_DECODER_MACHO_HPP
+#define OS_BSD_VM_DECODER_MACHO_HPP
+
+#ifdef __APPLE__
+
+#include "utilities/decoder.hpp"
+
+// Just a placehold for now
+class MachODecoder: public NullDecoder {
+public:
+  MachODecoder() { }
+  ~MachODecoder() { }
+};
+
+#endif
+
+#endif // OS_BSD_VM_DECODER_MACHO_HPP
+
--- a/src/os/bsd/vm/os_bsd.cpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/os/bsd/vm/os_bsd.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -1920,7 +1920,7 @@
     return true;
   } else if (dlinfo.dli_fname != NULL && dlinfo.dli_fbase != 0) {
     if (Decoder::decode((address)(addr - (address)dlinfo.dli_fbase),
-       dlinfo.dli_fname, buf, buflen, offset) == Decoder::no_error) {
+       buf, buflen, offset, dlinfo.dli_fname)) {
        return true;
     }
   }
--- a/src/os/linux/vm/decoder_linux.cpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/os/linux/vm/decoder_linux.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -23,11 +23,11 @@
  */
 
 #include "prims/jvm.h"
-#include "utilities/decoder.hpp"
+#include "utilities/decoder_elf.hpp"
 
 #include <cxxabi.h>
 
-bool Decoder::demangle(const char* symbol, char *buf, int buflen) {
+bool ElfDecoder::demangle(const char* symbol, char *buf, int buflen) {
   int   status;
   char* result;
   size_t size = (size_t)buflen;
@@ -43,3 +43,4 @@
   }
   return false;
 }
+
--- a/src/os/linux/vm/os_linux.cpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/os/linux/vm/os_linux.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -1732,7 +1732,7 @@
     return true;
   } else if (dlinfo.dli_fname != NULL && dlinfo.dli_fbase != 0) {
     if (Decoder::decode((address)(addr - (address)dlinfo.dli_fbase),
-       dlinfo.dli_fname, buf, buflen, offset) == Decoder::no_error) {
+        buf, buflen, offset, dlinfo.dli_fname)) {
        return true;
     }
   }
--- a/src/os/solaris/vm/decoder_solaris.cpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/os/solaris/vm/decoder_solaris.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -22,10 +22,11 @@
  *
  */
 
-#include "utilities/decoder.hpp"
+#include "utilities/decoder_elf.hpp"
 
 #include <demangle.h>
 
-bool Decoder::demangle(const char* symbol, char *buf, int buflen) {
+bool ElfDecoder::demangle(const char* symbol, char *buf, int buflen) {
   return !cplus_demangle(symbol, buf, (size_t)buflen);
 }
+
--- a/src/os/solaris/vm/os_solaris.cpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/os/solaris/vm/os_solaris.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -1997,7 +1997,7 @@
       }
       if (dlinfo.dli_fname != NULL && dlinfo.dli_fbase != 0) {
         if (Decoder::decode((address)(addr - (address)dlinfo.dli_fbase),
-          dlinfo.dli_fname, buf, buflen, offset) == Decoder::no_error) {
+           buf, buflen, offset, dlinfo.dli_fname)) {
           return true;
         }
       }
@@ -2015,7 +2015,7 @@
         return true;
       } else if (dlinfo.dli_fname != NULL && dlinfo.dli_fbase != 0) {
         if (Decoder::decode((address)(addr - (address)dlinfo.dli_fbase),
-          dlinfo.dli_fname, buf, buflen, offset) == Decoder::no_error) {
+          buf, buflen, offset, dlinfo.dli_fname)) {
           return true;
         }
       }
--- a/src/os/windows/vm/decoder_windows.cpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/os/windows/vm/decoder_windows.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2011, 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
@@ -24,22 +24,24 @@
 
 #include "precompiled.hpp"
 #include "prims/jvm.h"
-#include "runtime/os.hpp"
-#include "utilities/decoder.hpp"
+#include "decoder_windows.hpp"
 
-HMODULE                   Decoder::_dbghelp_handle = NULL;
-bool                      Decoder::_can_decode_in_vm = false;
-pfn_SymGetSymFromAddr64   Decoder::_pfnSymGetSymFromAddr64 = NULL;
-pfn_UndecorateSymbolName  Decoder::_pfnUndecorateSymbolName = NULL;
+WindowsDecoder::WindowsDecoder() {
+  _dbghelp_handle = NULL;
+  _can_decode_in_vm = false;
+  _pfnSymGetSymFromAddr64 = NULL;
+  _pfnUndecorateSymbolName = NULL;
 
-void Decoder::initialize() {
-  if (!_initialized) {
-    _initialized = true;
+  _decoder_status = no_error;
+  initialize();
+}
 
-    HINSTANCE handle = os::win32::load_Windows_dll("dbghelp.dll", NULL, 0);
+void WindowsDecoder::initialize() {
+  if (!has_error() && _dbghelp_handle == NULL) {
+    HMODULE handle = ::LoadLibrary("dbghelp.dll");
     if (!handle) {
       _decoder_status = helper_not_found;
-        return;
+      return;
     }
 
     _dbghelp_handle = handle;
@@ -70,32 +72,29 @@
 
      // find out if jvm.dll contains private symbols, by decoding
      // current function and comparing the result
-     address addr = (address)Decoder::initialize;
+     address addr = (address)Decoder::decode;
      char buf[MAX_PATH];
-     if (decode(addr, buf, sizeof(buf), NULL) == no_error) {
-       _can_decode_in_vm = !strcmp(buf, "Decoder::initialize");
+     if (decode(addr, buf, sizeof(buf), NULL)) {
+       _can_decode_in_vm = !strcmp(buf, "Decoder::decode");
      }
   }
 }
 
-void Decoder::uninitialize() {
-  assert(_initialized, "Decoder not yet initialized");
+void WindowsDecoder::uninitialize() {
   _pfnSymGetSymFromAddr64 = NULL;
   _pfnUndecorateSymbolName = NULL;
   if (_dbghelp_handle != NULL) {
     ::FreeLibrary(_dbghelp_handle);
   }
-  _initialized = false;
+  _dbghelp_handle = NULL;
 }
 
-bool Decoder::can_decode_C_frame_in_vm() {
-  initialize();
-  return  _can_decode_in_vm;
+bool WindowsDecoder::can_decode_C_frame_in_vm() const {
+  return  (!has_error() && _can_decode_in_vm);
 }
 
 
-Decoder::decoder_status Decoder::decode(address addr, char *buf, int buflen, int *offset) {
-  assert(_initialized, "Decoder not yet initialized");
+bool WindowsDecoder::decode(address addr, char *buf, int buflen, int* offset, const char* modulepath)  {
   if (_pfnSymGetSymFromAddr64 != NULL) {
     PIMAGEHLP_SYMBOL64 pSymbol;
     char symbolInfo[MAX_PATH + sizeof(IMAGEHLP_SYMBOL64)];
@@ -105,19 +104,20 @@
     DWORD64 displacement;
     if (_pfnSymGetSymFromAddr64(::GetCurrentProcess(), (DWORD64)addr, &displacement, pSymbol)) {
       if (buf != NULL) {
-        if (!demangle(pSymbol->Name, buf, buflen)) {
+        if (demangle(pSymbol->Name, buf, buflen)) {
           jio_snprintf(buf, buflen, "%s", pSymbol->Name);
         }
       }
-      if (offset != NULL) *offset = (int)displacement;
-      return no_error;
+      if(offset != NULL) *offset = (int)displacement;
+      return true;
     }
   }
-  return helper_not_found;
+  if (buf != NULL && buflen > 0) buf[0] = '\0';
+  if (offset != NULL) *offset = -1;
+  return false;
 }
 
-bool Decoder::demangle(const char* symbol, char *buf, int buflen) {
-  assert(_initialized, "Decoder not yet initialized");
+bool WindowsDecoder::demangle(const char* symbol, char *buf, int buflen) {
   return _pfnUndecorateSymbolName != NULL &&
          _pfnUndecorateSymbolName(symbol, buf, buflen, UNDNAME_COMPLETE);
 }
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/os/windows/vm/decoder_windows.hpp	Fri Jan 20 16:56:31 2012 -0800
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2011, 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.
+ *
+ */
+
+#ifndef OS_WINDOWS_VM_DECODER_WINDOWS_HPP
+#define OS_WINDOWS_VM_DECIDER_WINDOWS_HPP
+
+#include <windows.h>
+#include <imagehlp.h>
+
+#include "utilities/decoder.hpp"
+
+// functions needed for decoding symbols
+typedef DWORD (WINAPI *pfn_SymSetOptions)(DWORD);
+typedef BOOL  (WINAPI *pfn_SymInitialize)(HANDLE, PCTSTR, BOOL);
+typedef BOOL  (WINAPI *pfn_SymGetSymFromAddr64)(HANDLE, DWORD64, PDWORD64, PIMAGEHLP_SYMBOL64);
+typedef DWORD (WINAPI *pfn_UndecorateSymbolName)(const char*, char*, DWORD, DWORD);
+
+class WindowsDecoder: public NullDecoder {
+
+public:
+  WindowsDecoder();
+  ~WindowsDecoder() { uninitialize(); };
+
+  bool can_decode_C_frame_in_vm() const;
+  bool demangle(const char* symbol, char *buf, int buflen);
+  bool decode(address addr, char *buf, int buflen, int* offset, const char* modulepath = NULL);
+
+private:
+  void initialize();
+  void uninitialize();
+
+private:
+  HMODULE                   _dbghelp_handle;
+  bool                      _can_decode_in_vm;
+  pfn_SymGetSymFromAddr64   _pfnSymGetSymFromAddr64;
+  pfn_UndecorateSymbolName  _pfnUndecorateSymbolName;
+};
+
+#endif // OS_WINDOWS_VM_DECODER_WINDOWS_HPP
+
--- a/src/os/windows/vm/os_windows.cpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/os/windows/vm/os_windows.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -1391,7 +1391,7 @@
 
 bool os::dll_address_to_function_name(address addr, char *buf,
                                       int buflen, int *offset) {
-  if (Decoder::decode(addr, buf, buflen, offset) == Decoder::no_error) {
+  if (Decoder::decode(addr, buf, buflen, offset)) {
     return true;
   }
   if (offset != NULL)  *offset  = -1;
--- a/src/share/vm/classfile/symbolTable.cpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/classfile/symbolTable.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -204,6 +204,24 @@
   return s;
 }
 
+// Look up the address of the literal in the SymbolTable for this Symbol*
+// Do not create any new symbols
+// Do not increment the reference count to keep this alive
+Symbol** SymbolTable::lookup_symbol_addr(Symbol* sym){
+  unsigned int hash = hash_symbol((char*)sym->bytes(), sym->utf8_length());
+  int index = the_table()->hash_to_index(hash);
+
+  for (HashtableEntry<Symbol*>* e = the_table()->bucket(index); e != NULL; e = e->next()) {
+    if (e->hash() == hash) {
+      Symbol* literal_sym = e->literal();
+      if (sym == literal_sym) {
+        return e->literal_addr();
+      }
+    }
+  }
+  return NULL;
+}
+
 // Suggestion: Push unicode-based lookup all the way into the hashing
 // and probing logic, so there is no need for convert_to_utf8 until
 // an actual new Symbol* is created.
--- a/src/share/vm/classfile/symbolTable.hpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/classfile/symbolTable.hpp	Fri Jan 20 16:56:31 2012 -0800
@@ -144,6 +144,9 @@
 
   static void release(Symbol* sym);
 
+  // Look up the address of the literal in the SymbolTable for this Symbol*
+  static Symbol** lookup_symbol_addr(Symbol* sym);
+
   // jchar (utf16) version of lookups
   static Symbol* lookup_unicode(const jchar* name, int len, TRAPS);
   static Symbol* lookup_only_unicode(const jchar* name, int len, unsigned int& hash);
--- a/src/share/vm/classfile/systemDictionary.cpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/classfile/systemDictionary.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -2131,6 +2131,12 @@
     }
   }
 
+  // Assign a classid if one has not already been assigned.  The
+  // counter does not need to be atomically incremented since this
+  // is only done while holding the SystemDictionary_lock.
+  // All loaded classes get a unique ID.
+  TRACE_INIT_ID(k);
+
   // Check for a placeholder. If there, remove it and make a
   // new system dictionary entry.
   placeholders()->find_and_remove(p_index, p_hash, name, class_loader, THREAD);
--- a/src/share/vm/oops/klass.cpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/oops/klass.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -158,6 +158,9 @@
   kl->set_next_sibling(NULL);
   kl->set_alloc_count(0);
   kl->set_alloc_size(0);
+#ifdef TRACE_SET_KLASS_TRACE_ID
+  TRACE_SET_KLASS_TRACE_ID(kl, 0);
+#endif
 
   kl->set_prototype_header(markOopDesc::prototype());
   kl->set_biased_lock_revocation_count(0);
--- a/src/share/vm/oops/klass.hpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/oops/klass.hpp	Fri Jan 20 16:56:31 2012 -0800
@@ -33,6 +33,7 @@
 #include "oops/klassPS.hpp"
 #include "oops/oop.hpp"
 #include "runtime/orderAccess.hpp"
+#include "trace/traceMacros.hpp"
 #include "utilities/accessFlags.hpp"
 #ifndef SERIALGC
 #include "gc_implementation/concurrentMarkSweep/cmsOopClosures.hpp"
@@ -80,6 +81,7 @@
 //    [last_biased_lock_bulk_revocation_time] (64 bits)
 //    [prototype_header]
 //    [biased_lock_revocation_count]
+//    [trace_id]
 
 
 // Forward declarations.
@@ -263,6 +265,9 @@
   markOop  _prototype_header;   // Used when biased locking is both enabled and disabled for this type
   jint     _biased_lock_revocation_count;
 
+#ifdef TRACE_DEFINE_KLASS_TRACE_ID
+  TRACE_DEFINE_KLASS_TRACE_ID;
+#endif
  public:
 
   // returns the enclosing klassOop
@@ -683,6 +688,9 @@
   jlong last_biased_lock_bulk_revocation_time() { return _last_biased_lock_bulk_revocation_time; }
   void  set_last_biased_lock_bulk_revocation_time(jlong cur_time) { _last_biased_lock_bulk_revocation_time = cur_time; }
 
+#ifdef TRACE_DEFINE_KLASS_METHODS
+  TRACE_DEFINE_KLASS_METHODS;
+#endif
 
   // garbage collection support
   virtual void follow_weak_klass_links(
--- a/src/share/vm/oops/methodKlass.cpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/oops/methodKlass.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -83,6 +83,7 @@
   m->set_max_stack(0);
   m->set_max_locals(0);
   m->set_intrinsic_id(vmIntrinsics::_none);
+  m->set_jfr_towrite(false);
   m->set_method_data(NULL);
   m->set_interpreter_throwout_count(0);
   m->set_vtable_index(methodOopDesc::garbage_vtable_index);
--- a/src/share/vm/oops/methodOop.hpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/oops/methodOop.hpp	Fri Jan 20 16:56:31 2012 -0800
@@ -77,7 +77,7 @@
 // | method_size             | max_stack                  |
 // | max_locals              | size_of_parameters         |
 // |------------------------------------------------------|
-// | intrinsic_id, (unused)  |  throwout_count            |
+// |intrinsic_id|   flags    |  throwout_count            |
 // |------------------------------------------------------|
 // | num_breakpoints         |  (unused)                  |
 // |------------------------------------------------------|
@@ -124,6 +124,8 @@
   u2                _max_locals;                 // Number of local variables used by this method
   u2                _size_of_parameters;         // size of the parameter block (receiver + arguments) in words
   u1                _intrinsic_id;               // vmSymbols::intrinsic_id (0 == _none)
+  u1                _jfr_towrite : 1,            // Flags
+                                 : 7;
   u2                _interpreter_throwout_count; // Count of times method was exited via exception while interpreting
   u2                _number_of_breakpoints;      // fullspeed debugging support
   InvocationCounter _invocation_counter;         // Incremented before each activation of the method - used to trigger frequency-based optimizations
@@ -225,6 +227,7 @@
   void clear_number_of_breakpoints()             { _number_of_breakpoints = 0; }
 
   // index into instanceKlass methods() array
+  // note: also used by jfr
   u2 method_idnum() const           { return constMethod()->method_idnum(); }
   void set_method_idnum(u2 idnum)   { constMethod()->set_method_idnum(idnum); }
 
@@ -650,6 +653,9 @@
   void init_intrinsic_id();     // updates from _none if a match
   static vmSymbols::SID klass_id_for_intrinsics(klassOop holder);
 
+  bool jfr_towrite()                 { return _jfr_towrite; }
+  void set_jfr_towrite(bool towrite) { _jfr_towrite = towrite; }
+
   // On-stack replacement support
   bool has_osr_nmethod(int level, bool match_level) {
    return instanceKlass::cast(method_holder())->lookup_osr_nmethod(this, InvocationEntryBci, level, match_level) != NULL;
--- a/src/share/vm/prims/jni.cpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/prims/jni.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -48,6 +48,7 @@
 #include "oops/typeArrayOop.hpp"
 #include "prims/jni.h"
 #include "prims/jniCheck.hpp"
+#include "prims/jniExport.hpp"
 #include "prims/jniFastGetField.hpp"
 #include "prims/jvm.h"
 #include "prims/jvm_misc.hpp"
@@ -66,6 +67,8 @@
 #include "runtime/signature.hpp"
 #include "runtime/vm_operations.hpp"
 #include "services/runtimeService.hpp"
+#include "trace/tracing.hpp"
+#include "trace/traceEventTypes.hpp"
 #include "utilities/defaultStream.hpp"
 #include "utilities/dtrace.hpp"
 #include "utilities/events.hpp"
@@ -5139,6 +5142,11 @@
     if (JvmtiExport::should_post_thread_life()) {
        JvmtiExport::post_thread_start(thread);
     }
+
+    EVENT_BEGIN(TraceEventThreadStart, event);
+    EVENT_COMMIT(event,
+        EVENT_SET(event, javalangthread, java_lang_Thread::thread_id(thread->threadObj())));
+
     // Check if we should compile all classes on bootclasspath
     NOT_PRODUCT(if (CompileTheWorld) ClassLoader::compile_the_world();)
     // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving.
@@ -5337,6 +5345,10 @@
     JvmtiExport::post_thread_start(thread);
   }
 
+  EVENT_BEGIN(TraceEventThreadStart, event);
+  EVENT_COMMIT(event,
+      EVENT_SET(event, javalangthread, java_lang_Thread::thread_id(thread->threadObj())));
+
   *(JNIEnv**)penv = thread->jni_environment();
 
   // Now leaving the VM, so change thread_state. This is normally automatically taken care
@@ -5464,8 +5476,7 @@
     return ret;
   }
 
-  if (JvmtiExport::is_jvmti_version(version)) {
-    ret = JvmtiExport::get_jvmti_interface(vm, penv, version);
+  if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) {
     return ret;
   }
 
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/vm/prims/jniExport.hpp	Fri Jan 20 16:56:31 2012 -0800
@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 1997, 2011, 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.
+ *
+ */
+
+#ifndef SHARE_VM_PRIMS_JNI_EXPORT_HPP
+#define SHARE_VM_PRIMS_JNI_EXPORT_HPP
+
+#include "prims/jni.h"
+#include "prims/jvmtiExport.hpp"
+
+class JniExportedInterface {
+ public:
+  static bool GetExportedInterface(JavaVM* vm, void** penv, jint version, jint* iface) {
+    if (JvmtiExport::is_jvmti_version(version)) {
+      *iface = JvmtiExport::get_jvmti_interface(vm, penv, version);
+      return true;
+    }
+    return false;
+  }
+};
+
+#endif // SHARE_VM_PRIMS_JNI_EXPORT_HPP
--- a/src/share/vm/prims/methodHandles.cpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/prims/methodHandles.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -194,9 +194,6 @@
 // MethodHandles::generate_adapters
 //
 void MethodHandles::generate_adapters() {
-#ifdef TARGET_ARCH_NYI_6939861
-  if (FLAG_IS_DEFAULT(UseRicochetFrames))  UseRicochetFrames = false;
-#endif
   if (!EnableInvokeDynamic || SystemDictionary::MethodHandle_klass() == NULL)  return;
 
   assert(_adapter_code == NULL, "generate only once");
@@ -230,18 +227,6 @@
 }
 
 
-#ifdef TARGET_ARCH_NYI_6939861
-// these defs belong in methodHandles_<arch>.cpp
-frame MethodHandles::ricochet_frame_sender(const frame& fr, RegisterMap *map) {
-  ShouldNotCallThis();
-  return fr;
-}
-void MethodHandles::ricochet_frame_oops_do(const frame& fr, OopClosure* f, const RegisterMap* reg_map) {
-  ShouldNotCallThis();
-}
-#endif //TARGET_ARCH_NYI_6939861
-
-
 //------------------------------------------------------------------------------
 // MethodHandles::ek_supported
 //
@@ -251,28 +236,11 @@
   case _adapter_unused_13:
     return false;  // not defined yet
   case _adapter_prim_to_ref:
-    return UseRicochetFrames && conv_op_supported(java_lang_invoke_AdapterMethodHandle::OP_PRIM_TO_REF);
+    return conv_op_supported(java_lang_invoke_AdapterMethodHandle::OP_PRIM_TO_REF);
   case _adapter_collect_args:
-    return UseRicochetFrames && conv_op_supported(java_lang_invoke_AdapterMethodHandle::OP_COLLECT_ARGS);
+    return conv_op_supported(java_lang_invoke_AdapterMethodHandle::OP_COLLECT_ARGS);
   case _adapter_fold_args:
-    return UseRicochetFrames && conv_op_supported(java_lang_invoke_AdapterMethodHandle::OP_FOLD_ARGS);
-  case _adapter_opt_return_any:
-    return UseRicochetFrames;
-#ifdef TARGET_ARCH_NYI_6939861
-  // ports before 6939861 supported only three kinds of spread ops
-  case _adapter_spread_args:
-    // restrict spreads to three kinds:
-    switch (ek) {
-    case _adapter_opt_spread_0:
-    case _adapter_opt_spread_1:
-    case _adapter_opt_spread_more:
-      break;
-    default:
-      return false;
-      break;
-    }
-    break;
-#endif //TARGET_ARCH_NYI_6939861
+    return conv_op_supported(java_lang_invoke_AdapterMethodHandle::OP_FOLD_ARGS);
   }
   return true;
 }
@@ -1988,9 +1956,6 @@
     case _adapter_prim_to_ref:    // boxer MH to use
     case _adapter_collect_args:   // method handle which collects the args
     case _adapter_fold_args:      // method handle which collects the args
-      if (!UseRicochetFrames) {
-        { err = "box/collect/fold operators are not supported"; break; }
-      }
       if (!java_lang_invoke_MethodHandle::is_instance(argument()))
         { err = "MethodHandle adapter argument required"; break; }
       arg_mtype = Handle(THREAD, java_lang_invoke_MethodHandle::type(argument()));
@@ -2370,7 +2335,6 @@
 
   case _adapter_prim_to_ref:
     {
-      assert(UseRicochetFrames, "else don't come here");
       // vminfo will be the location to insert the return value
       vminfo = argslot;
       ek_opt = _adapter_opt_collect_ref;
@@ -2436,20 +2400,6 @@
 
   case _adapter_spread_args:
     {
-#ifdef TARGET_ARCH_NYI_6939861
-      // ports before 6939861 supported only three kinds of spread ops
-      if (!UseRicochetFrames) {
-        int array_size   = slots_pushed + 1;
-        assert(array_size >= 0, "");
-        vminfo = array_size;
-        switch (array_size) {
-        case 0:   ek_opt = _adapter_opt_spread_0;       break;
-        case 1:   ek_opt = _adapter_opt_spread_1;       break;
-        default:  ek_opt = _adapter_opt_spread_more;    break;
-        }
-        break;
-      }
-#endif //TARGET_ARCH_NYI_6939861
       // vminfo will be the required length of the array
       int array_size = (slots_pushed + 1) / (type2size[dest] == 2 ? 2 : 1);
       vminfo = array_size;
@@ -2494,7 +2444,6 @@
 
   case _adapter_collect_args:
     {
-      assert(UseRicochetFrames, "else don't come here");
       int elem_slots = argument_slot_count(java_lang_invoke_MethodHandle::type(argument()));
       // vminfo will be the location to insert the return value
       vminfo = argslot;
@@ -2563,7 +2512,6 @@
 
   case _adapter_fold_args:
     {
-      assert(UseRicochetFrames, "else don't come here");
       int elem_slots = argument_slot_count(java_lang_invoke_MethodHandle::type(argument()));
       // vminfo will be the location to insert the return value
       vminfo = argslot + elem_slots;
--- a/src/share/vm/prims/methodHandles.hpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/prims/methodHandles.hpp	Fri Jan 20 16:56:31 2012 -0800
@@ -738,46 +738,6 @@
 #ifdef TARGET_ARCH_ppc
 # include "methodHandles_ppc.hpp"
 #endif
-
-#ifdef TARGET_ARCH_NYI_6939861
-  // Here are some backward compatible declarations until the 6939861 ports are updated.
-  #define _adapter_flyby    (_EK_LIMIT + 10)
-  #define _adapter_ricochet (_EK_LIMIT + 11)
-  #define _adapter_opt_spread_1    _adapter_opt_spread_1_ref
-  #define _adapter_opt_spread_more _adapter_opt_spread_ref
-  enum {
-    _INSERT_NO_MASK   = -1,
-    _INSERT_REF_MASK  = 0,
-    _INSERT_INT_MASK  = 1,
-    _INSERT_LONG_MASK = 3
-  };
-  static void get_ek_bound_mh_info(EntryKind ek, BasicType& arg_type, int& arg_mask, int& arg_slots) {
-    arg_type = ek_bound_mh_arg_type(ek);
-    arg_mask = 0;
-    arg_slots = type2size[arg_type];;
-  }
-  static void get_ek_adapter_opt_swap_rot_info(EntryKind ek, int& swap_bytes, int& rotate) {
-    int swap_slots = ek_adapter_opt_swap_slots(ek);
-    rotate = ek_adapter_opt_swap_mode(ek);
-    swap_bytes = swap_slots * Interpreter::stackElementSize;
-  }
-  static int get_ek_adapter_opt_spread_info(EntryKind ek) {
-    return ek_adapter_opt_spread_count(ek);
-  }
-
-  static void insert_arg_slots(MacroAssembler* _masm,
-                               RegisterOrConstant arg_slots,
-                               int arg_mask,
-                               Register argslot_reg,
-                               Register temp_reg, Register temp2_reg, Register temp3_reg = noreg);
-
-  static void remove_arg_slots(MacroAssembler* _masm,
-                               RegisterOrConstant arg_slots,
-                               Register argslot_reg,
-                               Register temp_reg, Register temp2_reg, Register temp3_reg = noreg);
-
-  static void trace_method_handle(MacroAssembler* _masm, const char* adaptername) PRODUCT_RETURN;
-#endif //TARGET_ARCH_NYI_6939861
 };
 
 
--- a/src/share/vm/runtime/frame.cpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/runtime/frame.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2012, 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
@@ -1334,24 +1334,21 @@
 
 
 void frame::describe(FrameValues& values, int frame_no) {
+  intptr_t* frame_pointer = real_fp();
   if (is_entry_frame() || is_compiled_frame() || is_interpreted_frame() || is_native_frame()) {
     // Label values common to most frames
     values.describe(-1, unextended_sp(), err_msg("unextended_sp for #%d", frame_no));
     values.describe(-1, sp(), err_msg("sp for #%d", frame_no));
-    if (is_compiled_frame()) {
-      values.describe(-1, sp() + _cb->frame_size(), err_msg("computed fp for #%d", frame_no));
-    } else {
-      values.describe(-1, fp(), err_msg("fp for #%d", frame_no));
-    }
+    values.describe(-1, frame_pointer, err_msg("frame pointer for #%d", frame_no));
   }
   if (is_interpreted_frame()) {
     methodOop m = interpreter_frame_method();
     int bci = interpreter_frame_bci();
 
     // Label the method and current bci
-    values.describe(-1, MAX2(sp(), fp()),
+    values.describe(-1, MAX2(sp(), frame_pointer),
                     FormatBuffer<1024>("#%d method %s @ %d", frame_no, m->name_and_sig_as_C_string(), bci), 2);
-    values.describe(-1, MAX2(sp(), fp()),
+    values.describe(-1, MAX2(sp(), frame_pointer),
                     err_msg("- %d locals %d max stack", m->max_locals(), m->max_stack()), 1);
     if (m->max_locals() > 0) {
       intptr_t* l0 = interpreter_frame_local_at(0);
@@ -1383,18 +1380,18 @@
     }
   } else if (is_entry_frame()) {
     // For now just label the frame
-    values.describe(-1, MAX2(sp(), fp()), err_msg("#%d entry frame", frame_no), 2);
+    values.describe(-1, MAX2(sp(), frame_pointer), err_msg("#%d entry frame", frame_no), 2);
   } else if (is_compiled_frame()) {
     // For now just label the frame
     nmethod* nm = cb()->as_nmethod_or_null();
-    values.describe(-1, MAX2(sp(), fp()),
+    values.describe(-1, MAX2(sp(), frame_pointer),
                     FormatBuffer<1024>("#%d nmethod " INTPTR_FORMAT " for method %s%s", frame_no,
                                        nm, nm->method()->name_and_sig_as_C_string(),
                                        is_deoptimized_frame() ? " (deoptimized" : ""), 2);
   } else if (is_native_frame()) {
     // For now just label the frame
     nmethod* nm = cb()->as_nmethod_or_null();
-    values.describe(-1, MAX2(sp(), fp()),
+    values.describe(-1, MAX2(sp(), frame_pointer),
                     FormatBuffer<1024>("#%d nmethod " INTPTR_FORMAT " for native method %s", frame_no,
                                        nm, nm->method()->name_and_sig_as_C_string()), 2);
   }
--- a/src/share/vm/runtime/frame.hpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/runtime/frame.hpp	Fri Jan 20 16:56:31 2012 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2012, 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
@@ -221,6 +221,15 @@
   // returns the stack pointer of the calling frame
   intptr_t* sender_sp() const;
 
+  // Returns the real 'frame pointer' for the current frame.
+  // This is the value expected by the platform ABI when it defines a
+  // frame pointer register. It may differ from the effective value of
+  // the FP register when that register is used in the JVM for other
+  // purposes (like compiled frames on some platforms).
+  // On other platforms, it is defined so that the stack area used by
+  // this frame goes from real_fp() to sp().
+  intptr_t* real_fp() const;
+
   // Deoptimization info, if needed (platform dependent).
   // Stored in the initial_info field of the unroll info, to be used by
   // the platform dependent deoptimization blobs.
--- a/src/share/vm/runtime/globals.hpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/runtime/globals.hpp	Fri Jan 20 16:56:31 2012 -0800
@@ -3826,10 +3826,6 @@
   develop(bool, StressMethodHandleWalk, false,                              \
           "Process all method handles with MethodHandleWalk")               \
                                                                             \
-  diagnostic(bool, UseRicochetFrames, true,                                 \
-          "use ricochet stack frames for method handle combination, "       \
-          "if the platform supports them")                                  \
-                                                                            \
   experimental(bool, TrustFinalNonStaticFields, false,                      \
           "trust final non-static declarations for constant folding")       \
                                                                             \
--- a/src/share/vm/runtime/java.cpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/runtime/java.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -57,6 +57,8 @@
 #include "runtime/task.hpp"
 #include "runtime/timer.hpp"
 #include "runtime/vm_operations.hpp"
+#include "trace/tracing.hpp"
+#include "trace/traceEventTypes.hpp"
 #include "utilities/dtrace.hpp"
 #include "utilities/globalDefinitions.hpp"
 #include "utilities/histogram.hpp"
@@ -502,6 +504,11 @@
   if (JvmtiExport::should_post_thread_life()) {
     JvmtiExport::post_thread_end(thread);
   }
+
+  EVENT_BEGIN(TraceEventThreadEnd, event);
+  EVENT_COMMIT(event,
+      EVENT_SET(event, javalangthread, java_lang_Thread::thread_id(thread->threadObj())));
+
   // Always call even when there are not JVMTI environments yet, since environments
   // may be attached late and JVMTI must track phases of VM execution
   JvmtiExport::post_vm_death();
--- a/src/share/vm/runtime/mutexLocker.cpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/runtime/mutexLocker.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -132,7 +132,13 @@
 Monitor* GCTaskManager_lock           = NULL;
 
 Mutex*   Management_lock              = NULL;
-Monitor* Service_lock               = NULL;
+Monitor* Service_lock                 = NULL;
+Mutex*   Stacktrace_lock              = NULL;
+
+Monitor* JfrQuery_lock                = NULL;
+Monitor* JfrMsg_lock                  = NULL;
+Mutex*   JfrBuffer_lock               = NULL;
+Mutex*   JfrStream_lock               = NULL;
 
 #define MAX_NUM_MUTEX 128
 static Monitor * _mutex_array[MAX_NUM_MUTEX];
@@ -207,6 +213,7 @@
   def(Patching_lock                , Mutex  , special,     true ); // used for safepointing and code patching.
   def(ObjAllocPost_lock            , Monitor, special,     false);
   def(Service_lock                 , Monitor, special,     true ); // used for service thread operations
+  def(Stacktrace_lock              , Mutex,   special,     true ); // used for JFR stacktrace database
   def(JmethodIdCreation_lock       , Mutex  , leaf,        true ); // used for creating jmethodIDs.
 
   def(SystemDictionary_lock        , Monitor, leaf,        true ); // lookups done by VM thread
@@ -271,6 +278,11 @@
   def(Debug3_lock                  , Mutex  , nonleaf+4,   true );
   def(ProfileVM_lock               , Monitor, nonleaf+4,   false); // used for profiling of the VMThread
   def(CompileThread_lock           , Monitor, nonleaf+5,   false );
+
+  def(JfrQuery_lock                , Monitor, nonleaf,     true);  // JFR locks, keep these in consecutive order
+  def(JfrMsg_lock                  , Monitor, nonleaf+2,   true);
+  def(JfrBuffer_lock               , Mutex,   nonleaf+3,   true);
+  def(JfrStream_lock               , Mutex,   nonleaf+4,   true);
 }
 
 GCMutexLocker::GCMutexLocker(Monitor * mutex) {
--- a/src/share/vm/runtime/mutexLocker.hpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/runtime/mutexLocker.hpp	Fri Jan 20 16:56:31 2012 -0800
@@ -135,6 +135,12 @@
 
 extern Mutex*   Management_lock;                 // a lock used to serialize JVM management
 extern Monitor* Service_lock;                    // a lock used for service thread operation
+extern Mutex*   Stacktrace_lock;                 // used to guard access to the stacktrace table
+
+extern Monitor* JfrQuery_lock;                   // protects JFR use
+extern Monitor* JfrMsg_lock;                     // protects JFR messaging
+extern Mutex*   JfrBuffer_lock;                  // protects JFR buffer operations
+extern Mutex*   JfrStream_lock;                  // protects JFR stream access
 
 // A MutexLocker provides mutual exclusion with respect to a given mutex
 // for the scope which contains the locker.  The lock is an OS lock, not
--- a/src/share/vm/runtime/os.cpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/runtime/os.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -1101,6 +1101,7 @@
         "%/lib/jsse.jar:"
         "%/lib/jce.jar:"
         "%/lib/charsets.jar:"
+        "%/lib/jfr.jar:"
 #ifdef __APPLE__
         "%/lib/JObjC.jar:"
 #endif
--- a/src/share/vm/runtime/sharedRuntime.cpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/runtime/sharedRuntime.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -121,7 +121,6 @@
 void SharedRuntime::generate_ricochet_blob() {
   if (!EnableInvokeDynamic)  return;  // leave it as a null
 
-#ifndef TARGET_ARCH_NYI_6939861
   // allocate space for the code
   ResourceMark rm;
   // setup code generation tools
@@ -142,7 +141,6 @@
   }
 
   _ricochet_blob = RicochetBlob::create(&buffer, bounce_offset, exception_offset, frame_size_in_words);
-#endif
 }
 
 
--- a/src/share/vm/runtime/thread.cpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/runtime/thread.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -73,6 +73,7 @@
 #include "services/attachListener.hpp"
 #include "services/management.hpp"
 #include "services/threadService.hpp"
+#include "trace/traceEventTypes.hpp"
 #include "utilities/defaultStream.hpp"
 #include "utilities/dtrace.hpp"
 #include "utilities/events.hpp"
@@ -232,6 +233,7 @@
   CHECK_UNHANDLED_OOPS_ONLY(_gc_locked_out_count = 0;)
   _jvmti_env_iteration_count = 0;
   set_allocated_bytes(0);
+  set_trace_buffer(NULL);
   _vm_operation_started_count = 0;
   _vm_operation_completed_count = 0;
   _current_pending_monitor = NULL;
@@ -1512,6 +1514,10 @@
     JvmtiExport::post_thread_start(this);
   }
 
+  EVENT_BEGIN(TraceEventThreadStart, event);
+  EVENT_COMMIT(event,
+     EVENT_SET(event, javalangthread, java_lang_Thread::thread_id(this->threadObj())));
+
   // We call another function to do the rest so we are sure that the stack addresses used
   // from there will be lower than the stack base just computed
   thread_main_inner();
@@ -1641,6 +1647,15 @@
       }
     }
 
+    // Called before the java thread exit since we want to read info
+    // from java_lang_Thread object
+    EVENT_BEGIN(TraceEventThreadEnd, event);
+    EVENT_COMMIT(event,
+        EVENT_SET(event, javalangthread, java_lang_Thread::thread_id(this->threadObj())));
+
+    // Call after last event on thread
+    EVENT_THREAD_EXIT(this);
+
     // Call Thread.exit(). We try 3 times in case we got another Thread.stop during
     // the execution of the method. If that is not enough, then we don't really care. Thread.stop
     // is deprecated anyhow.
@@ -3186,6 +3201,11 @@
     return status;
   }
 
+  // Must be run after init_ft which initializes ft_enabled
+  if (TRACE_INITIALIZE() != JNI_OK) {
+    vm_exit_during_initialization("Failed to initialize tracing backend");
+  }
+
   // Should be done after the heap is fully created
   main_thread->cache_global_variables();
 
@@ -3423,6 +3443,10 @@
     create_vm_init_libraries();
   }
 
+  if (!TRACE_START()) {
+    vm_exit_during_initialization(Handle(THREAD, PENDING_EXCEPTION));
+  }
+
   // Notify JVMTI agents that VM initialization is complete - nop if no agents.
   JvmtiExport::post_vm_initialized();
 
--- a/src/share/vm/runtime/thread.hpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/runtime/thread.hpp	Fri Jan 20 16:56:31 2012 -0800
@@ -41,6 +41,7 @@
 #include "runtime/stubRoutines.hpp"
 #include "runtime/threadLocalStorage.hpp"
 #include "runtime/unhandledOops.hpp"
+#include "trace/tracing.hpp"
 #include "utilities/exceptions.hpp"
 #include "utilities/top.hpp"
 #ifndef SERIALGC
@@ -246,6 +247,8 @@
   jlong _allocated_bytes;                       // Cumulative number of bytes allocated on
                                                 // the Java heap
 
+  TRACE_BUFFER _trace_buffer;                   // Thread-local buffer for tracing
+
   int   _vm_operation_started_count;            // VM_Operation support
   int   _vm_operation_completed_count;          // VM_Operation support
 
@@ -414,6 +417,9 @@
     return allocated_bytes;
   }
 
+  TRACE_BUFFER trace_buffer()              { return _trace_buffer; }
+  void set_trace_buffer(TRACE_BUFFER buf)  { _trace_buffer = buf; }
+
   // VM operation support
   int vm_operation_ticket()                      { return ++_vm_operation_started_count; }
   int vm_operation_completed_count()             { return _vm_operation_completed_count; }
--- a/src/share/vm/runtime/vm_operations.hpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/runtime/vm_operations.hpp	Fri Jan 20 16:56:31 2012 -0800
@@ -93,6 +93,7 @@
   template(HeapWalkOperation)                     \
   template(HeapIterateOperation)                  \
   template(ReportJavaOutOfMemory)                 \
+  template(JFRCheckpoint)                         \
   template(Exit)                                  \
 
 class VM_Operation: public CHeapObj {
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/vm/trace/traceEventTypes.hpp	Fri Jan 20 16:56:31 2012 -0800
@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 1997, 2012, 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.
+ *
+ */
+
+#ifndef SHARE_VM_TRACE_TRACE_EVENT_TYPES_HPP
+#define SHARE_VM_TRACE_TRACE_EVENT_TYPES_HPP
+
+/* Empty, just a placeholder for tracing events */
+
+#endif
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/vm/trace/traceMacros.hpp	Fri Jan 20 16:56:31 2012 -0800
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 1997, 2011, 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.
+ *
+ */
+
+#ifndef SHARE_VM_TRACE_TRACE_MACRO_HPP
+#define SHARE_VM_TRACE_TRACE_MACRO_HPP
+
+#define EVENT_BEGIN(type, name)
+#define EVENT_SET(name, field, value)
+#define EVENT_COMMIT(name, ...)
+#define EVENT_STARTED(name, time)
+#define EVENT_ENDED(name, time)
+#define EVENT_THREAD_EXIT(thread)
+
+#define TRACE_ENABLED 0
+
+#define TRACE_INIT_ID(k)
+#define TRACE_BUFFER void*
+
+#define TRACE_START() true
+#define TRACE_INITIALIZE() 0
+
+#endif
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/vm/trace/tracing.hpp	Fri Jan 20 16:56:31 2012 -0800
@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 1997, 2011, 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.
+ *
+ */
+
+#ifndef SHARE_VM_TRACE_TRACING_HPP
+#define SHARE_VM_TRACE_TRACING_HPP
+
+#include "trace/traceMacros.hpp"
+
+#endif
--- a/src/share/vm/utilities/decoder.cpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/utilities/decoder.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -24,80 +24,85 @@
 
 #include "precompiled.hpp"
 #include "prims/jvm.h"
+#include "runtime/mutexLocker.hpp"
 #include "utilities/decoder.hpp"
 
-Decoder::decoder_status  Decoder::_decoder_status = Decoder::no_error;
-bool                     Decoder::_initialized = false;
+#if defined(_WINDOWS)
+  #include "decoder_windows.hpp"
+#elif defined(__APPLE__)
+  #include "decoder_machO.hpp"
+#else
+  #include "decoder_elf.hpp"
+#endif
 
-#if !defined(_WINDOWS) && !defined(__APPLE__)
+NullDecoder*  Decoder::_decoder = NULL;
+NullDecoder   Decoder::_do_nothing_decoder;
+Mutex*           Decoder::_decoder_lock = new Mutex(Mutex::safepoint,
+                                "DecoderLock");
 
-// Implementation of common functionalities among Solaris and Linux
-#include "utilities/elfFile.hpp"
+// _decoder_lock should already acquired before enter this method
+NullDecoder* Decoder::get_decoder() {
+  assert(_decoder_lock != NULL && _decoder_lock->owned_by_self(),
+    "Require DecoderLock to enter");
 
-ElfFile* Decoder::_opened_elf_files = NULL;
+  if (_decoder != NULL) {
+    return _decoder;
+  }
+
+  // Decoder is a secondary service. Although, it is good to have,
+  // but we can live without it.
+#if defined(_WINDOWS)
+  _decoder = new (std::nothrow) WindowsDecoder();
+#elif defined (__APPLE__)
+    _decoder = new (std::nothrow)MachODecoder();
+#else
+    _decoder = new (std::nothrow)ElfDecoder();
+#endif
+
+  if (_decoder == NULL || _decoder->has_error()) {
+    if (_decoder != NULL) {
+      delete _decoder;
+    }
+    _decoder = &_do_nothing_decoder;
+  }
+  return _decoder;
+}
+
+bool Decoder::decode(address addr, char* buf, int buflen, int* offset, const char* modulepath) {
+  assert(_decoder_lock != NULL, "Just check");
+  MutexLockerEx locker(_decoder_lock, true);
+  NullDecoder* decoder = get_decoder();
+  assert(decoder != NULL, "null decoder");
+
+  return decoder->decode(addr, buf, buflen, offset, modulepath);
+}
+
+bool Decoder::demangle(const char* symbol, char* buf, int buflen) {
+  assert(_decoder_lock != NULL, "Just check");
+  MutexLockerEx locker(_decoder_lock, true);
+  NullDecoder* decoder = get_decoder();
+  assert(decoder != NULL, "null decoder");
+  return decoder->demangle(symbol, buf, buflen);
+}
 
 bool Decoder::can_decode_C_frame_in_vm() {
-  return true;
+  assert(_decoder_lock != NULL, "Just check");
+  MutexLockerEx locker(_decoder_lock, true);
+  NullDecoder* decoder = get_decoder();
+  assert(decoder != NULL, "null decoder");
+  return decoder->can_decode_C_frame_in_vm();
 }
 
-void Decoder::initialize() {
-  _initialized = true;
+// shutdown real decoder and replace it with
+// _do_nothing_decoder
+void Decoder::shutdown() {
+  assert(_decoder_lock != NULL, "Just check");
+  MutexLockerEx locker(_decoder_lock, true);
+
+  if (_decoder != NULL && _decoder != &_do_nothing_decoder) {
+    delete _decoder;
+  }
+
+  _decoder = &_do_nothing_decoder;
 }
 
-void Decoder::uninitialize() {
-  if (_opened_elf_files != NULL) {
-    delete _opened_elf_files;
-    _opened_elf_files = NULL;
-  }
-  _initialized = false;
-}
-
-Decoder::decoder_status Decoder::decode(address addr, const char* filepath, char *buf, int buflen, int *offset) {
-  if (_decoder_status != no_error) {
-    return _decoder_status;
-  }
-
-  ElfFile* file = get_elf_file(filepath);
-  if (_decoder_status != no_error) {
-    return _decoder_status;
-  }
-
-  const char* symbol = file->decode(addr, offset);
-  if (file->get_status() == out_of_memory) {
-    _decoder_status = out_of_memory;
-    return _decoder_status;
-  } else if (symbol != NULL) {
-    if (!demangle(symbol, buf, buflen)) {
-      jio_snprintf(buf, buflen, "%s", symbol);
-    }
-    return no_error;
-  } else {
-    return symbol_not_found;
-  }
-}
-
-ElfFile* Decoder::get_elf_file(const char* filepath) {
-  if (_decoder_status != no_error) {
-    return NULL;
-  }
-  ElfFile* file = _opened_elf_files;
-  while (file != NULL) {
-    if (file->same_elf_file(filepath)) {
-      return file;
-    }
-    file = file->m_next;
-  }
-
-  file = new ElfFile(filepath);
-  if (file == NULL) {
-    _decoder_status = out_of_memory;
-  }
-  if (_opened_elf_files != NULL) {
-    file->m_next = _opened_elf_files;
-  }
-
-  _opened_elf_files = file;
-  return file;
-}
-
-#endif
--- a/src/share/vm/utilities/decoder.hpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/utilities/decoder.hpp	Fri Jan 20 16:56:31 2012 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2011, 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
@@ -23,83 +23,78 @@
  */
 
 
-#ifndef __DECODER_HPP
-#define __DECODER_HPP
+#ifndef SHARE_VM_UTILITIES_DECODER_HPP
+#define SHARE_VM_UTILITIES_DECODER_HPP
 
 #include "memory/allocation.hpp"
+#include "runtime/mutex.hpp"
 
-#ifdef _WINDOWS
-#include <windows.h>
-#include <imagehlp.h>
-
-// functions needed for decoding symbols
-typedef DWORD (WINAPI *pfn_SymSetOptions)(DWORD);
-typedef BOOL  (WINAPI *pfn_SymInitialize)(HANDLE, PCTSTR, BOOL);
-typedef BOOL  (WINAPI *pfn_SymGetSymFromAddr64)(HANDLE, DWORD64, PDWORD64, PIMAGEHLP_SYMBOL64);
-typedef DWORD (WINAPI *pfn_UndecorateSymbolName)(const char*, char*, DWORD, DWORD);
-
-#elif defined(__APPLE__)
-
-#else
-
-class ElfFile;
-
-#endif // _WINDOWS
-
-
-class Decoder: public StackObj {
-
- public:
+class NullDecoder: public CHeapObj {
+public:
   // status code for decoding native C frame
   enum decoder_status {
-         no_error,             // successfully decoded frames
+         not_available = -10,  // real decoder is not available
+         no_error = 0,         // successfully decoded frames
          out_of_memory,        // out of memory
          file_invalid,         // invalid elf file
          file_not_found,       // could not found symbol file (on windows), such as jvm.pdb or jvm.map
          helper_not_found,     // could not load dbghelp.dll (Windows only)
          helper_func_error,    // decoding functions not found (Windows only)
-         helper_init_error,    // SymInitialize failed (Windows only)
-         symbol_not_found      // could not find the symbol
+         helper_init_error     // SymInitialize failed (Windows only)
   };
 
- public:
-  Decoder() { initialize(); };
-  ~Decoder() { uninitialize(); };
+  NullDecoder() {
+    _decoder_status = not_available;
+  }
 
+  ~NullDecoder() {};
+
+  virtual bool decode(address pc, char* buf, int buflen, int* offset,
+    const char* modulepath = NULL) {
+    return false;
+  }
+
+  virtual bool demangle(const char* symbol, char* buf, int buflen) {
+    return false;
+  }
+
+  virtual bool can_decode_C_frame_in_vm() const {
+    return false;
+  }
+
+  virtual decoder_status status() const {
+    return _decoder_status;
+  }
+
+  virtual bool has_error() const {
+    return is_error(_decoder_status);
+  }
+
+  static bool is_error(decoder_status status) {
+    return (status > 0);
+  }
+
+protected:
+  decoder_status  _decoder_status;
+};
+
+
+class Decoder: AllStatic {
+public:
+  static bool decode(address pc, char* buf, int buflen, int* offset, const char* modulepath = NULL);
+  static bool demangle(const char* symbol, char* buf, int buflen);
   static bool can_decode_C_frame_in_vm();
 
-  static void initialize();
-  static void uninitialize();
+  static void shutdown();
+protected:
+  static NullDecoder* get_decoder();
 
-#ifdef _WINDOWS
-  static decoder_status    decode(address addr, char *buf, int buflen, int *offset);
-#else
-  static decoder_status    decode(address addr, const char* filepath, char *buf, int buflen, int *offset);
-#endif
+private:
+  static NullDecoder*     _decoder;
+  static NullDecoder      _do_nothing_decoder;
 
-  static bool              demangle(const char* symbol, char *buf, int buflen);
-
-  static decoder_status    get_status() { return _decoder_status; };
-
-#if !defined(_WINDOWS) && !defined(__APPLE__)
- private:
-  static ElfFile*         get_elf_file(const char* filepath);
-#endif // _WINDOWS
-
-
- private:
-  static decoder_status     _decoder_status;
-  static bool               _initialized;
-
-#ifdef _WINDOWS
-  static HMODULE                   _dbghelp_handle;
-  static bool                      _can_decode_in_vm;
-  static pfn_SymGetSymFromAddr64   _pfnSymGetSymFromAddr64;
-  static pfn_UndecorateSymbolName  _pfnUndecorateSymbolName;
-#elif __APPLE__
-#else
-  static ElfFile*                  _opened_elf_files;
-#endif // _WINDOWS
+protected:
+  static Mutex*       _decoder_lock;
 };
 
-#endif // __DECODER_HPP
+#endif // SHARE_VM_UTILITIES_DECODER_HPP
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/vm/utilities/decoder_elf.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2011, 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 "precompiled.hpp"
+
+#if !defined(_WINDOWS) && !defined(__APPLE__)
+#include "decoder_elf.hpp"
+
+ElfDecoder::~ElfDecoder() {
+  if (_opened_elf_files != NULL) {
+    delete _opened_elf_files;
+    _opened_elf_files = NULL;
+  }
+}
+
+bool ElfDecoder::decode(address addr, char *buf, int buflen, int* offset, const char* filepath) {
+  assert(filepath, "null file path");
+  assert(buf != NULL && buflen > 0, "Invalid buffer");
+  if (has_error()) return false;
+  ElfFile* file = get_elf_file(filepath);
+  if (file == NULL) {
+    return false;
+  }
+
+  if (!file->decode(addr, buf, buflen, offset)) {
+    return false;
+  }
+  if (buf[0] != '\0') {
+    demangle(buf, buf, buflen);
+  }
+  return true;
+}
+
+ElfFile* ElfDecoder::get_elf_file(const char* filepath) {
+  ElfFile* file;
+
+  file = _opened_elf_files;
+  while (file != NULL) {
+    if (file->same_elf_file(filepath)) {
+      return file;
+    }
+    file = file->next();
+  }
+
+  file = new (std::nothrow)ElfFile(filepath);
+  if (file != NULL) {
+    if (_opened_elf_files != NULL) {
+      file->set_next(_opened_elf_files);
+    }
+    _opened_elf_files = file;
+  }
+
+  return file;
+}
+#endif
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/vm/utilities/decoder_elf.hpp	Fri Jan 20 16:56:31 2012 -0800
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2011, 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.
+ *
+ */
+
+#ifndef SHARE_VM_UTILITIES_DECODER_ELF_HPP
+#define SHARE_VM_UTILITIES_DECODER_ELF_HPP
+
+#if !defined(_WINDOWS) && !defined(__APPLE__)
+
+#include "utilities/decoder.hpp"
+#include "utilities/elfFile.hpp"
+
+class ElfDecoder: public NullDecoder {
+
+public:
+  ElfDecoder() {
+    _opened_elf_files = NULL;
+    _decoder_status = no_error;
+  }
+  ~ElfDecoder();
+
+  bool can_decode_C_frame_in_vm() const { return true; }
+
+  bool demangle(const char* symbol, char *buf, int buflen);
+  bool decode(address addr, char *buf, int buflen, int* offset, const char* filepath = NULL);
+
+private:
+  ElfFile*         get_elf_file(const char* filepath);
+
+private:
+  ElfFile*         _opened_elf_files;
+};
+
+#endif
+#endif // SHARE_VM_UTILITIES_DECODER_ELF_HPP
--- a/src/share/vm/utilities/elfFile.cpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/utilities/elfFile.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -44,7 +44,7 @@
   m_string_tables = NULL;
   m_symbol_tables = NULL;
   m_next = NULL;
-  m_status = Decoder::no_error;
+  m_status = NullDecoder::no_error;
 
   int len = strlen(filepath) + 1;
   m_filepath = (const char*)os::malloc(len * sizeof(char));
@@ -54,10 +54,10 @@
     if (m_file != NULL) {
       load_tables();
     } else {
-      m_status = Decoder::file_not_found;
+      m_status = NullDecoder::file_not_found;
     }
   } else {
-    m_status = Decoder::out_of_memory;
+    m_status = NullDecoder::out_of_memory;
   }
 }
 
@@ -96,41 +96,41 @@
 
 bool ElfFile::load_tables() {
   assert(m_file, "file not open");
-  assert(m_status == Decoder::no_error, "already in error");
+  assert(!NullDecoder::is_error(m_status), "already in error");
 
   // read elf file header
   if (fread(&m_elfHdr, sizeof(m_elfHdr), 1, m_file) != 1) {
-    m_status = Decoder::file_invalid;
+    m_status = NullDecoder::file_invalid;
     return false;
   }
 
   if (!is_elf_file(m_elfHdr)) {
-    m_status = Decoder::file_invalid;
+    m_status = NullDecoder::file_invalid;
     return false;
   }
 
   // walk elf file's section headers, and load string tables
   Elf_Shdr shdr;
   if (!fseek(m_file, m_elfHdr.e_shoff, SEEK_SET)) {
-    if (m_status != Decoder::no_error) return false;
+    if (NullDecoder::is_error(m_status)) return false;
 
     for (int index = 0; index < m_elfHdr.e_shnum; index ++) {
       if (fread((void*)&shdr, sizeof(Elf_Shdr), 1, m_file) != 1) {
-        m_status = Decoder::file_invalid;
+        m_status = NullDecoder::file_invalid;
         return false;
       }
       // string table
       if (shdr.sh_type == SHT_STRTAB) {
         ElfStringTable* table = new (std::nothrow) ElfStringTable(m_file, shdr, index);
         if (table == NULL) {
-          m_status = Decoder::out_of_memory;
+          m_status = NullDecoder::out_of_memory;
           return false;
         }
         add_string_table(table);
       } else if (shdr.sh_type == SHT_SYMTAB || shdr.sh_type == SHT_DYNSYM) {
         ElfSymbolTable* table = new (std::nothrow) ElfSymbolTable(m_file, shdr);
         if (table == NULL) {
-          m_status = Decoder::out_of_memory;
+          m_status = NullDecoder::out_of_memory;
           return false;
         }
         add_symbol_table(table);
@@ -140,32 +140,33 @@
   return true;
 }
 
-const char* ElfFile::decode(address addr, int* offset) {
+bool ElfFile::decode(address addr, char* buf, int buflen, int* offset) {
   // something already went wrong, just give up
-  if (m_status != Decoder::no_error) {
-    return NULL;
+  if (NullDecoder::is_error(m_status)) {
+    return false;
   }
-
   ElfSymbolTable* symbol_table = m_symbol_tables;
   int string_table_index;
   int pos_in_string_table;
   int off = INT_MAX;
   bool found_symbol = false;
   while (symbol_table != NULL) {
-    if (Decoder::no_error == symbol_table->lookup(addr, &string_table_index, &pos_in_string_table, &off)) {
+    if (symbol_table->lookup(addr, &string_table_index, &pos_in_string_table, &off)) {
       found_symbol = true;
     }
     symbol_table = symbol_table->m_next;
   }
-  if (!found_symbol) return NULL;
+  if (!found_symbol) return false;
 
   ElfStringTable* string_table = get_string_table(string_table_index);
+
   if (string_table == NULL) {
-    m_status = Decoder::file_invalid;
-    return NULL;
+    m_status = NullDecoder::file_invalid;
+    return false;
   }
   if (offset) *offset = off;
-  return string_table->string_at(pos_in_string_table);
+
+  return string_table->string_at(pos_in_string_table, buf, buflen);
 }
 
 
--- a/src/share/vm/utilities/elfFile.hpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/utilities/elfFile.hpp	Fri Jan 20 16:56:31 2012 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2011, 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
@@ -22,8 +22,8 @@
  *
  */
 
-#ifndef __ELF_FILE_HPP
-#define __ELF_FILE_HPP
+#ifndef SHARE_VM_UTILITIES_ELF_FILE_HPP
+#define SHARE_VM_UTILITIES_ELF_FILE_HPP
 
 #if !defined(_WINDOWS) && !defined(__APPLE__)
 
@@ -83,12 +83,12 @@
 // part of code to be very defensive, and bait out if anything went wrong.
 
 class ElfFile: public CHeapObj {
-  friend class Decoder;
+  friend class ElfDecoder;
  public:
   ElfFile(const char* filepath);
   ~ElfFile();
 
-  const char* decode(address addr, int* offset);
+  bool decode(address addr, char* buf, int buflen, int* offset);
   const char* filepath() {
     return m_filepath;
   }
@@ -99,7 +99,7 @@
     return (m_filepath && !strcmp(filepath, m_filepath));
   }
 
-  Decoder::decoder_status get_status() {
+  NullDecoder::decoder_status get_status() {
     return m_status;
   }
 
@@ -119,8 +119,9 @@
   // return a string table at specified section index
   ElfStringTable* get_string_table(int index);
 
-  // look up an address and return the nearest symbol
-  const char* look_up(Elf_Shdr shdr, address addr, int* offset);
+protected:
+   ElfFile*  next() const { return m_next; }
+   void set_next(ElfFile* file) { m_next = file; }
 
  protected:
     ElfFile*         m_next;
@@ -131,17 +132,17 @@
   FILE* m_file;
 
   // Elf header
-  Elf_Ehdr            m_elfHdr;
+  Elf_Ehdr                     m_elfHdr;
 
   // symbol tables
-  ElfSymbolTable*     m_symbol_tables;
+  ElfSymbolTable*              m_symbol_tables;
 
   // string tables
-  ElfStringTable*     m_string_tables;
+  ElfStringTable*              m_string_tables;
 
-  Decoder::decoder_status  m_status;
+  NullDecoder::decoder_status  m_status;
 };
 
 #endif // _WINDOWS
 
-#endif // __ELF_FILE_HPP
+#endif // SHARE_VM_UTILITIES_ELF_FILE_HPP
--- a/src/share/vm/utilities/elfStringTable.cpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/utilities/elfStringTable.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -38,7 +38,7 @@
   m_index = index;
   m_next = NULL;
   m_file = file;
-  m_status = Decoder::no_error;
+  m_status = NullDecoder::no_error;
 
   // try to load the string table
   long cur_offset = ftell(file);
@@ -48,7 +48,7 @@
     if (fseek(file, shdr.sh_offset, SEEK_SET) ||
       fread((void*)m_table, shdr.sh_size, 1, file) != 1 ||
       fseek(file, cur_offset, SEEK_SET)) {
-      m_status = Decoder::file_invalid;
+      m_status = NullDecoder::file_invalid;
       os::free((void*)m_table);
       m_table = NULL;
     }
@@ -67,22 +67,23 @@
   }
 }
 
-const char* ElfStringTable::string_at(int pos) {
-  if (m_status != Decoder::no_error) {
-    return NULL;
+bool ElfStringTable::string_at(int pos, char* buf, int buflen) {
+  if (NullDecoder::is_error(m_status)) {
+    return false;
   }
   if (m_table != NULL) {
-    return (const char*)(m_table + pos);
+    jio_snprintf(buf, buflen, "%s", (const char*)(m_table + pos));
+    return true;
   } else {
     long cur_pos = ftell(m_file);
     if (cur_pos == -1 ||
       fseek(m_file, m_shdr.sh_offset + pos, SEEK_SET) ||
-      fread(m_symbol, 1, MAX_SYMBOL_LEN, m_file) <= 0 ||
+      fread(buf, 1, buflen, m_file) <= 0 ||
       fseek(m_file, cur_pos, SEEK_SET)) {
-      m_status = Decoder::file_invalid;
-      return NULL;
+      m_status = NullDecoder::file_invalid;
+      return false;
     }
-    return (const char*)m_symbol;
+    return true;
   }
 }
 
--- a/src/share/vm/utilities/elfStringTable.hpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/utilities/elfStringTable.hpp	Fri Jan 20 16:56:31 2012 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2011, 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
@@ -22,8 +22,8 @@
  *
  */
 
-#ifndef __ELF_STRING_TABLE_HPP
-#define __ELF_STRING_TABLE_HPP
+#ifndef SHARE_VM_UTILITIES_ELF_STRING_TABLE_HPP
+#define SHARE_VM_UTILITIES_ELF_STRING_TABLE_HPP
 
 #if !defined(_WINDOWS) && !defined(__APPLE__)
 
@@ -35,9 +35,6 @@
 // The string table represents a string table section in an elf file.
 // Whenever there is enough memory, it will load whole string table as
 // one blob. Otherwise, it will load string from file when requested.
-
-#define MAX_SYMBOL_LEN  256
-
 class ElfStringTable: CHeapObj {
   friend class ElfFile;
  public:
@@ -48,10 +45,10 @@
   int index() { return m_index; };
 
   // get string at specified offset
-  const char* string_at(int offset);
+  bool string_at(int offset, char* buf, int buflen);
 
   // get status code
-  Decoder::decoder_status get_status() { return m_status; };
+  NullDecoder::decoder_status get_status() { return m_status; };
 
  protected:
   ElfStringTable*        m_next;
@@ -69,13 +66,10 @@
   // section header
   Elf_Shdr                 m_shdr;
 
-  // buffer for reading individual string
-  char                     m_symbol[MAX_SYMBOL_LEN];
-
   // error code
-  Decoder::decoder_status  m_status;
+  NullDecoder::decoder_status  m_status;
 };
 
-#endif // _WINDOWS
+#endif // _WINDOWS and _APPLE
 
-#endif // __ELF_STRING_TABLE_HPP
+#endif // SHARE_VM_UTILITIES_ELF_STRING_TABLE_HPP
--- a/src/share/vm/utilities/elfSymbolTable.cpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/utilities/elfSymbolTable.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -34,7 +34,7 @@
   m_symbols = NULL;
   m_next = NULL;
   m_file = file;
-  m_status = Decoder::no_error;
+  m_status = NullDecoder::no_error;
 
   // try to load the string table
   long cur_offset = ftell(file);
@@ -45,16 +45,16 @@
       if (fseek(file, shdr.sh_offset, SEEK_SET) ||
         fread((void*)m_symbols, shdr.sh_size, 1, file) != 1 ||
         fseek(file, cur_offset, SEEK_SET)) {
-        m_status = Decoder::file_invalid;
+        m_status = NullDecoder::file_invalid;
         os::free(m_symbols);
         m_symbols = NULL;
       }
     }
-    if (m_status == Decoder::no_error) {
+    if (!NullDecoder::is_error(m_status)) {
       memcpy(&m_shdr, &shdr, sizeof(Elf_Shdr));
     }
   } else {
-    m_status = Decoder::file_invalid;
+    m_status = NullDecoder::file_invalid;
   }
 }
 
@@ -68,13 +68,13 @@
   }
 }
 
-Decoder::decoder_status ElfSymbolTable::lookup(address addr, int* stringtableIndex, int* posIndex, int* offset) {
+bool ElfSymbolTable::lookup(address addr, int* stringtableIndex, int* posIndex, int* offset) {
   assert(stringtableIndex, "null string table index pointer");
   assert(posIndex, "null string table offset pointer");
   assert(offset, "null offset pointer");
 
-  if (m_status != Decoder::no_error) {
-    return m_status;
+  if (NullDecoder::is_error(m_status)) {
+    return false;
   }
 
   address pc = 0;
@@ -97,8 +97,8 @@
     long cur_pos;
     if ((cur_pos = ftell(m_file)) == -1 ||
       fseek(m_file, m_shdr.sh_offset, SEEK_SET)) {
-      m_status = Decoder::file_invalid;
-      return m_status;
+      m_status = NullDecoder::file_invalid;
+      return false;
     }
 
     Elf_Sym sym;
@@ -114,13 +114,13 @@
           }
         }
       } else {
-        m_status = Decoder::file_invalid;
-        return m_status;
+        m_status = NullDecoder::file_invalid;
+        return false;
       }
     }
     fseek(m_file, cur_pos, SEEK_SET);
   }
-  return m_status;
+  return true;
 }
 
 #endif // _WINDOWS
--- a/src/share/vm/utilities/elfSymbolTable.hpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/utilities/elfSymbolTable.hpp	Fri Jan 20 16:56:31 2012 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2011, 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
@@ -22,8 +22,8 @@
  *
  */
 
-#ifndef __ELF_SYMBOL_TABLE_HPP
-#define __ELF_SYMBOL_TABLE_HPP
+#ifndef SHARE_VM_UTILITIES_ELF_SYMBOL_TABLE_HPP
+#define SHARE_VM_UTILITIES_ELF_SYMBOL_TABLE_HPP
 
 #if !defined(_WINDOWS) && !defined(__APPLE__)
 
@@ -45,9 +45,9 @@
   ~ElfSymbolTable();
 
   // search the symbol that is nearest to the specified address.
-  Decoder::decoder_status lookup(address addr, int* stringtableIndex, int* posIndex, int* offset);
+  bool lookup(address addr, int* stringtableIndex, int* posIndex, int* offset);
 
-  Decoder::decoder_status get_status() { return m_status; };
+  NullDecoder::decoder_status get_status() { return m_status; };
 
  protected:
   ElfSymbolTable*  m_next;
@@ -62,9 +62,9 @@
   // section header
   Elf_Shdr            m_shdr;
 
-  Decoder::decoder_status  m_status;
+  NullDecoder::decoder_status  m_status;
 };
 
-#endif // _WINDOWS
+#endif // _WINDOWS and _APPLE
 
-#endif // __ELF_SYMBOL_TABLE_HPP
+#endif // SHARE_VM_UTILITIES_ELF_SYMBOL_TABLE_HPP
--- a/src/share/vm/utilities/globalDefinitions.hpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/utilities/globalDefinitions.hpp	Fri Jan 20 16:56:31 2012 -0800
@@ -298,6 +298,11 @@
 const juint   max_juint   = (juint)-1;   // 0xFFFFFFFF largest juint
 const julong  max_julong  = (julong)-1;  // 0xFF....FF largest julong
 
+typedef jbyte  s1;
+typedef jshort s2;
+typedef jint   s4;
+typedef jlong  s8;
+
 //----------------------------------------------------------------------------------------------------
 // JVM spec restrictions
 
--- a/src/share/vm/utilities/vmError.cpp	Fri Jan 20 13:08:43 2012 -0800
+++ b/src/share/vm/utilities/vmError.cpp	Fri Jan 20 16:56:31 2012 -0800
@@ -571,8 +571,6 @@
        if (fr.pc()) {
           st->print_cr("Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)");
 
-          // initialize decoder to decode C frames
-          Decoder decoder;
 
           int count = 0;
           while (count++ < StackPrintLimit) {