jvmti.cc (_Jv_JVMTI_DisposeEnvironment): Check for enabled events.

        * jvmti.cc (_Jv_JVMTI_DisposeEnvironment): Check for enabled
        events.
        (check_enabled_event): New function.
        (check_enabled_events): New function.
        (post_event): New function.
        (_Jv_JVMTI_SetEventNotificationMode): New function.
        (_Jv_JVMTI_SetEventCallbacks): New function.
        (_Jv_JVMTI_Interface): Define SetEventNotificationMode and
        SetEventCallbacks members.
        * include/jvmti-int.h: New file.
        * include/jvmti_md.h (EVENT_SLOTS) [__GCJ_JNI_IMP__]: Define.
        (_CLASSPATH_JVMTIENV_CONTENTS) [__GCJ_JNI_IMPL__]: Define.
        * testsuite/libjava.jvmti/events.java: New file.
        * testsuite/libjava.jvmti/events.out: New file.
        * testsuite/libjava.jvmti/natevents.cc: New file.

From-SVN: r117133

libjava/ChangeLog

+2006-09-21  Keith Seitz  <keiths@redhat.com>
+
+	* jvmti.cc (_Jv_JVMTI_DisposeEnvironment): Check for enabled
+	events.
+	(check_enabled_event): New function.
+	(check_enabled_events): New function.
+	(post_event): New function.
+	(_Jv_JVMTI_SetEventNotificationMode): New function.
+	(_Jv_JVMTI_SetEventCallbacks): New function.
+	(_Jv_JVMTI_Interface): Define SetEventNotificationMode and
+	SetEventCallbacks members.
+	* include/jvmti-int.h: New file.
+	* include/jvmti_md.h (EVENT_SLOTS) [__GCJ_JNI_IMP__]: Define.
+	(_CLASSPATH_JVMTIENV_CONTENTS) [__GCJ_JNI_IMPL__]: Define.
+	* testsuite/libjava.jvmti/events.java: New file.
+	* testsuite/libjava.jvmti/events.out: New file.
+	* testsuite/libjava.jvmti/natevents.cc: New file. 
+
 2006-09-21  Sandro Tolaini  <tolaini@libero.it>
 
 	* configure.ac: Don't use darwin-signal.h as signal handler for

libjava/include/jvmti-int.h

+/* jvmti-int.h -- Internal JVMTI definitions
+   Copyright (C) 2006 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+ 
+GNU Classpath 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 for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+As a special exception, if you link this library with other files to
+produce an executable, this library does not by itself cause the
+resulting executable to be covered by the GNU General Public License.
+This exception does not however invalidate any other reasons why the
+executable file might be covered by the GNU General Public License. */
+
+#ifndef __GCJ_JVTMI_INT_H__
+#define __GCJ_JVMTI_INT_H__
+
+/* A macro to map jvmtiEvent to an index in thread[] and enabled[]
+   in the jvmtiEnv. This will only work if the order of events listed
+   in jvmtiEvent and jvmtiEventCallbacks is kept the same (which should
+   not be a problem). */
+#define EVENT_INDEX(jvmtievent) (int)(jvmtievent - JVMTI_EVENT_VM_INIT)
+
+/* A few globals to help limit the impact of JVMTI on normal operations.
+   False means no JVMTI environment requested that event type. */
+namespace JVMTI
+{
+  bool VMInit;
+  bool VMDeath;
+  bool ThreadStart;
+  bool ThreadEnd;
+  bool ClassFileLoadHook;
+  bool ClassLoad;
+  bool ClassPrepare;
+  bool VMStart;
+  bool Exception;
+  bool ExceptionCatch;
+  bool SingleStep;
+  bool FramePop;
+  bool Breakpoint;
+  bool FieldAccess;
+  bool FieldModification;
+  bool MethodEntry;
+  bool MethodExit;
+  bool NativeMethodBind;
+  bool CompiledMethodLoad;
+  bool CompiledMethodUnload;
+  bool DynamicCodeGenerated;
+  bool DataDumpRequest;
+  bool reserved72;
+  bool MonitorWait;
+  bool MonitorWaited;
+  bool MonitorContendedEnter;
+  bool MonitorContendedEntered;
+  bool reserved77;
+  bool reserved78;
+  bool reserved79;
+  bool reserved80;
+  bool GarbageCollectionStart;
+  bool GarbageCollectionFinish;
+  bool ObjectFree;
+  bool VMObjectAlloc;
+};
+
+/* A macro to test whether an event should be posted to JVMTI.*/
+#define JVMTI_REQUESTED_EVENT(Event) __builtin_expect (JVMTI::Event, false)
+
+/* Post the event to requesting JVMTI environments.
+
+   For speed, this function should only be called after 
+   JVMTI_REQUESTED_EVENT is checked. */
+extern void _Jv_JVMTI_PostEvent (jvmtiEvent type, jthread event_thread,				 ...);
+#endif /* __GCJ_JVMTI_INT_H__ */

libjava/include/jvmti_md.h

@@ -27,6 +27,32 @@ executable file might be covered by the GNU General Public License. */
 #ifndef __GCJ_JVMTI_MD_H__
 #define __GCJ_JVMTI_MD_H__
 
-// nothing
+#ifdef __GCJ_JNI_IMPL__
+
+/* If __GCJ_JNI_IMPL__ is defined, then we assume that we're building
+   libgcj itself, and we include functions which should not be exposed
+   to JVMTI users. */
+
+/* The number of event slots needed to keep track of event reporting
+   constraints for an environment. This will only work if the order of
+   events listed in jvmtiEvent and jvmtiEventCallbacks is kept the same
+   (which should not be a problem). */
+#define EVENT_SLOTS \
+  (int)(JVMTI_EVENT_VM_OBJECT_ALLOC - JVMTI_EVENT_VM_INIT + 1)
+
+/* Contents of the jvmtiEnv; but only inside the implementation. */
+#define _CLASSPATH_JVMTIENV_CONTENTS					\
+  /* Event handlers registered via SetEventCallbacks */			\
+  jvmtiEventCallbacks callbacks;					\
+									\
+  /* Array of event thread for which to report event. */		\
+  /* NULL means all threads. One for each callback.   */		\
+  jthread thread[EVENT_SLOTS];						\
+  									\
+  /* Array of notification modes for callbacks. */			\
+  /* One for each callback.                     */			\
+  bool enabled[EVENT_SLOTS];
+
+#endif /* __GCJ_JNI_IMPL__ */
 
 #endif /* __GCJ_JVMTI_MD_H__ */

libjava/jvmti.cc

@@ -15,6 +15,7 @@ details.  */
 #include <java-threads.h>
 #include <java-gc.h>
 #include <jvmti.h>
+#include "jvmti-int.h"
 
 #include <gcj/method.h>
 
@@ -32,6 +33,9 @@ details.  */
 #include <java/util/HashMap.h>
 #include <java/net/URL.h>
 
+static void check_enabled_events (void);
+static void check_enabled_event (jvmtiEvent);
+
 extern struct JNINativeInterface _Jv_JNIFunctions;
 
 struct _Jv_rawMonitorID
@@ -519,6 +523,9 @@ _Jv_JVMTI_DisposeEnvironment (jvmtiEnv *env)
     }
 
   _Jv_Free (env);
+
+  check_enabled_events ();
+
   return JVMTI_ERROR_NONE;
 }
 
@@ -665,6 +672,300 @@ _Jv_JVMTI_GetObjectSize (MAYBE_UNUSED jvmtiEnv *env, jobject object,
   return JVMTI_ERROR_NONE;
 }
 
+/* An event is enabled only if it has both an event handler
+   and it is enabled in the environment. */
+static void
+check_enabled_event (jvmtiEvent type)
+{
+  bool *enabled;
+  int offset;
+
+#define GET_OFFSET(Event)				\
+  do							\
+    {							\
+      enabled = &JVMTI::Event;				\
+      offset = offsetof (jvmtiEventCallbacks, Event);	\
+    }							\
+  while (0)
+
+  switch (type)
+    {
+    case JVMTI_EVENT_VM_INIT:
+      GET_OFFSET (VMInit);
+      break;
+
+    case JVMTI_EVENT_VM_DEATH:
+      GET_OFFSET (VMDeath);
+      break;
+
+    case JVMTI_EVENT_THREAD_START:
+      GET_OFFSET (ThreadStart);
+      break;
+
+    case JVMTI_EVENT_THREAD_END:
+      GET_OFFSET (ThreadEnd);
+      break;
+
+    case JVMTI_EVENT_CLASS_FILE_LOAD_HOOK:
+      GET_OFFSET (ClassFileLoadHook);
+      break;
+
+    case JVMTI_EVENT_CLASS_LOAD:
+      GET_OFFSET (ClassLoad);
+      break;
+
+    case JVMTI_EVENT_CLASS_PREPARE:
+      GET_OFFSET (ClassPrepare);
+      break;
+
+    case JVMTI_EVENT_VM_START:
+      GET_OFFSET (VMStart);
+      break;
+
+    case JVMTI_EVENT_EXCEPTION:
+      GET_OFFSET (Exception);
+      break;
+
+    case JVMTI_EVENT_EXCEPTION_CATCH:
+      GET_OFFSET (ExceptionCatch);
+      break;
+
+    case JVMTI_EVENT_SINGLE_STEP:
+      GET_OFFSET (SingleStep);
+      break;
+
+    case JVMTI_EVENT_FRAME_POP:
+      GET_OFFSET (FramePop);
+      break;
+
+    case JVMTI_EVENT_BREAKPOINT:
+      GET_OFFSET (Breakpoint);
+      break;
+
+    case JVMTI_EVENT_FIELD_ACCESS:
+      GET_OFFSET (FieldAccess);
+      break;
+
+    case JVMTI_EVENT_FIELD_MODIFICATION:
+      GET_OFFSET (FieldModification);
+      break;
+
+    case JVMTI_EVENT_METHOD_ENTRY:
+      GET_OFFSET (MethodEntry);
+      break;
+
+    case JVMTI_EVENT_METHOD_EXIT:
+      GET_OFFSET (MethodExit);
+      break;
+
+    case JVMTI_EVENT_NATIVE_METHOD_BIND:
+      GET_OFFSET (NativeMethodBind);
+      break;
+
+    case JVMTI_EVENT_COMPILED_METHOD_LOAD:
+      GET_OFFSET (CompiledMethodLoad);
+      break;
+
+    case JVMTI_EVENT_COMPILED_METHOD_UNLOAD:
+      GET_OFFSET (CompiledMethodUnload);
+      break;
+
+    case JVMTI_EVENT_DYNAMIC_CODE_GENERATED:
+      GET_OFFSET (DynamicCodeGenerated);
+      break;
+
+    case JVMTI_EVENT_DATA_DUMP_REQUEST:
+      GET_OFFSET (DataDumpRequest);
+      break;
+
+    case JVMTI_EVENT_MONITOR_WAIT:
+      GET_OFFSET (MonitorWait);
+      break;
+
+    case JVMTI_EVENT_MONITOR_WAITED:
+      GET_OFFSET (MonitorWaited);
+      break;
+
+    case JVMTI_EVENT_MONITOR_CONTENDED_ENTER:
+      GET_OFFSET (MonitorContendedEnter);
+      break;
+
+    case JVMTI_EVENT_MONITOR_CONTENDED_ENTERED:
+      GET_OFFSET (MonitorContendedEntered);
+      break;
+
+    case JVMTI_EVENT_GARBAGE_COLLECTION_START:
+      GET_OFFSET (GarbageCollectionStart);
+      break;
+
+    case JVMTI_EVENT_GARBAGE_COLLECTION_FINISH:
+      GET_OFFSET (GarbageCollectionFinish);
+      break;
+
+    case JVMTI_EVENT_OBJECT_FREE:
+      GET_OFFSET (ObjectFree);
+      break;
+
+    case JVMTI_EVENT_VM_OBJECT_ALLOC:
+      GET_OFFSET (VMObjectAlloc);
+      break;
+
+    default:
+      fprintf (stderr,
+	       "libgcj: check_enabled_event for unknown JVMTI event (%d)\n",
+	       (int) type);
+      return;
+    }
+#undef GET_OFFSET
+
+  int index = EVENT_INDEX (type); // safe since caller checks this
+
+  JvSynchronize dummy (_envListLock);
+  struct jvmti_env_list *e;
+  FOREACH_ENVIRONMENT (e)
+    {
+      char *addr
+	= reinterpret_cast<char *> (&e->env->callbacks) + offset;
+      void **callback = reinterpret_cast<void **> (addr);
+      if (e->env->enabled[index] && *callback != NULL)
+	{
+	  *enabled = true;
+	  return;
+	}
+    }
+
+  *enabled = false;
+}
+
+static void
+check_enabled_events ()
+{
+  check_enabled_event (JVMTI_EVENT_VM_INIT);
+  check_enabled_event (JVMTI_EVENT_VM_DEATH);
+  check_enabled_event (JVMTI_EVENT_THREAD_START);
+  check_enabled_event (JVMTI_EVENT_THREAD_END);
+  check_enabled_event (JVMTI_EVENT_CLASS_FILE_LOAD_HOOK);
+  check_enabled_event (JVMTI_EVENT_CLASS_LOAD);
+  check_enabled_event (JVMTI_EVENT_CLASS_PREPARE);
+  check_enabled_event (JVMTI_EVENT_VM_START);
+  check_enabled_event (JVMTI_EVENT_EXCEPTION);
+  check_enabled_event (JVMTI_EVENT_EXCEPTION_CATCH);
+  check_enabled_event (JVMTI_EVENT_SINGLE_STEP);
+  check_enabled_event (JVMTI_EVENT_FRAME_POP);
+  check_enabled_event (JVMTI_EVENT_BREAKPOINT);
+  check_enabled_event (JVMTI_EVENT_FIELD_ACCESS);
+  check_enabled_event (JVMTI_EVENT_FIELD_MODIFICATION);
+  check_enabled_event (JVMTI_EVENT_METHOD_ENTRY);
+  check_enabled_event (JVMTI_EVENT_METHOD_EXIT);
+  check_enabled_event (JVMTI_EVENT_NATIVE_METHOD_BIND);
+  check_enabled_event (JVMTI_EVENT_COMPILED_METHOD_LOAD);
+  check_enabled_event (JVMTI_EVENT_COMPILED_METHOD_UNLOAD);
+  check_enabled_event (JVMTI_EVENT_DYNAMIC_CODE_GENERATED);
+  check_enabled_event (JVMTI_EVENT_DATA_DUMP_REQUEST);
+  check_enabled_event (JVMTI_EVENT_MONITOR_WAIT);
+  check_enabled_event (JVMTI_EVENT_MONITOR_WAITED);
+  check_enabled_event (JVMTI_EVENT_MONITOR_CONTENDED_ENTER);
+  check_enabled_event (JVMTI_EVENT_MONITOR_CONTENDED_ENTERED);
+  check_enabled_event (JVMTI_EVENT_GARBAGE_COLLECTION_START);
+  check_enabled_event (JVMTI_EVENT_GARBAGE_COLLECTION_FINISH);
+  check_enabled_event (JVMTI_EVENT_OBJECT_FREE);
+  check_enabled_event (JVMTI_EVENT_VM_OBJECT_ALLOC);
+}
+
+static jvmtiError JNICALL
+_Jv_JVMTI_SetEventNotificationMode (jvmtiEnv *env, jvmtiEventMode mode,
+				    jvmtiEvent type, jthread event_thread, ...)
+{
+  REQUIRE_PHASE (env, JVMTI_PHASE_ONLOAD | JVMTI_PHASE_LIVE);
+
+  if (event_thread != NULL)
+    {
+      using namespace java::lang;
+      Thread *t = reinterpret_cast<Thread *> (event_thread);
+      THREAD_CHECK_VALID (t);
+      THREAD_CHECK_IS_ALIVE (t);
+    }
+
+  bool enabled;
+  switch (mode)
+    {
+    case JVMTI_DISABLE:
+      enabled = false;
+      break;
+    case JVMTI_ENABLE:
+      enabled = true;
+      break;
+
+    default:
+      return JVMTI_ERROR_ILLEGAL_ARGUMENT;
+    }
+
+  switch (type)
+    {
+    case JVMTI_EVENT_VM_INIT:
+    case JVMTI_EVENT_VM_DEATH:
+    case JVMTI_EVENT_THREAD_START:
+    case JVMTI_EVENT_VM_START:
+    case JVMTI_EVENT_COMPILED_METHOD_LOAD:
+    case JVMTI_EVENT_COMPILED_METHOD_UNLOAD:
+    case JVMTI_EVENT_DYNAMIC_CODE_GENERATED:
+    case JVMTI_EVENT_DATA_DUMP_REQUEST:
+      ILLEGAL_ARGUMENT (event_thread != NULL);
+      break;
+
+    case JVMTI_EVENT_THREAD_END:
+    case JVMTI_EVENT_CLASS_FILE_LOAD_HOOK:
+    case JVMTI_EVENT_CLASS_LOAD:
+    case JVMTI_EVENT_CLASS_PREPARE:
+    case JVMTI_EVENT_EXCEPTION:
+    case JVMTI_EVENT_EXCEPTION_CATCH:
+    case JVMTI_EVENT_SINGLE_STEP:
+    case JVMTI_EVENT_FRAME_POP:
+    case JVMTI_EVENT_BREAKPOINT:
+    case JVMTI_EVENT_FIELD_ACCESS:
+    case JVMTI_EVENT_FIELD_MODIFICATION:
+    case JVMTI_EVENT_METHOD_ENTRY:
+    case JVMTI_EVENT_METHOD_EXIT:
+    case JVMTI_EVENT_NATIVE_METHOD_BIND:
+    case JVMTI_EVENT_MONITOR_WAIT:
+    case JVMTI_EVENT_MONITOR_WAITED:
+    case JVMTI_EVENT_MONITOR_CONTENDED_ENTER:
+    case JVMTI_EVENT_MONITOR_CONTENDED_ENTERED:
+    case JVMTI_EVENT_GARBAGE_COLLECTION_START:
+    case JVMTI_EVENT_GARBAGE_COLLECTION_FINISH:
+    case JVMTI_EVENT_OBJECT_FREE:
+    case JVMTI_EVENT_VM_OBJECT_ALLOC:
+      break;
+
+    default:
+      return JVMTI_ERROR_INVALID_EVENT_TYPE;
+    }
+
+  env->thread[EVENT_INDEX(type)] = event_thread;
+  env->enabled[EVENT_INDEX(type)] = enabled;
+  check_enabled_event (type);
+  return JVMTI_ERROR_NONE;
+}
+
+static jvmtiError JNICALL
+_Jv_JVMTI_SetEventCallbacks (jvmtiEnv *env,
+			     const jvmtiEventCallbacks *callbacks,
+			     jint size_of_callbacks)
+{
+  REQUIRE_PHASE (env, JVMTI_PHASE_ONLOAD | JVMTI_PHASE_LIVE);
+  ILLEGAL_ARGUMENT (size_of_callbacks < 0);
+
+  // Copy the list of callbacks into the environment
+  memcpy (&env->callbacks, callbacks, sizeof (jvmtiEventCallbacks));
+
+  /* Check which events are now enabeld (JVMTI makes no requirements
+     about the order in which SetEventCallbacks and SetEventNotifications
+     are called. So we must check all events here. */
+  check_enabled_events ();
+
+  return JVMTI_ERROR_NONE;
+}
+
 jvmtiError
 _Jv_JVMTI_GetErrorName (MAYBE_UNUSED jvmtiEnv *env, jvmtiError error,
 			char **name_ptr)
@@ -884,7 +1185,7 @@ _Jv_JVMTI_GetErrorName (MAYBE_UNUSED jvmtiEnv *env, jvmtiError error,
 struct _Jv_jvmtiEnv _Jv_JVMTI_Interface =
 {
   RESERVED,			// reserved1
-  UNIMPLEMENTED,		// SetEventNotification
+  _Jv_JVMTI_SetEventNotificationMode, // SetEventNotificationMode
   RESERVED,			// reserved3
   UNIMPLEMENTED,		// GetAllThreads
   _Jv_JVMTI_SuspendThread,	// SuspendThread
@@ -1004,7 +1305,7 @@ struct _Jv_jvmtiEnv _Jv_JVMTI_Interface =
   RESERVED,			// reserved119
   _Jv_JVMTI_SetJNIFunctionTable, // SetJNIFunctionTable
   _Jv_JVMTI_GetJNIFunctionTable, // GetJNIFunctionTable
-  UNIMPLEMENTED,		// SetEventCallbacks
+  _Jv_JVMTI_SetEventCallbacks,	// SetEventCallbacks
   UNIMPLEMENTED,		// GenerateEvents
   UNIMPLEMENTED,		// GetExtensionFunctions
   UNIMPLEMENTED,		// GetExtensionEvents
@@ -1072,4 +1373,385 @@ _Jv_JVMTI_Init ()
 {
   _jvmtiEnvironments = NULL;
   _envListLock = new java::lang::Object ();
+
+  // No environments, so this should set all JVMTI:: members to false
+  check_enabled_events ();
+}
+
+static void
+post_event (jvmtiEnv *env, jvmtiEvent type, jthread event_thread, va_list args)
+{
+#define ARG(Type,Name) Type Name = (Type) va_arg (args, Type)
+
+#define GET_BOOLEAN_ARG(Name)			\
+  ARG (int, b);					\
+  jboolean Name = (b == 0) ? false : true
+
+#define GET_CHAR_ARG(Name)			\
+  ARG (int, c);					\
+  char Name = static_cast<char> (c)
+
+  switch (type)
+    {
+    case JVMTI_EVENT_VM_INIT:
+      if (env->callbacks.VMInit != NULL)
+	{
+	  ARG (JNIEnv *, jni_env);
+	  env->callbacks.VMInit (env, jni_env, event_thread);
+	}
+      break;
+
+    case JVMTI_EVENT_VM_DEATH:
+      if (env->callbacks.VMDeath != NULL)
+	{
+	  ARG (JNIEnv *, jni_env);
+	  env->callbacks.VMDeath (env, jni_env);
+	}
+      break;
+
+    case JVMTI_EVENT_THREAD_START:
+      if (env->callbacks.ThreadStart != NULL)
+	{
+	  ARG (JNIEnv *, jni_env);
+	  env->callbacks.ThreadStart (env, jni_env, event_thread);
+	}
+      break;
+
+    case JVMTI_EVENT_THREAD_END:
+      if (env->callbacks.ThreadEnd != NULL)
+	{
+	  ARG (JNIEnv *, jni_env);
+	  env->callbacks.ThreadEnd (env, jni_env, event_thread);
+	}
+      break;
+
+    case JVMTI_EVENT_CLASS_FILE_LOAD_HOOK:
+      if (env->callbacks.ClassFileLoadHook != NULL)
+	{
+	  ARG (JNIEnv *, jni_env);
+	  ARG (jclass, class_being_redefined);
+	  ARG (jobject, loader);
+	  ARG (const char *, name);
+	  ARG (jobject, protection_domain);
+	  ARG (jint, class_data_len);
+	  ARG (const unsigned char *, class_data);
+	  ARG (jint *, new_class_data_len);
+	  ARG (unsigned char **, new_class_data);
+	  env->callbacks.ClassFileLoadHook (env, jni_env,
+					    class_being_redefined, loader,
+					    name, protection_domain,
+					    class_data_len, class_data,
+					    new_class_data_len,
+					    new_class_data);
+	}
+      break;
+
+    case JVMTI_EVENT_CLASS_LOAD:
+      if (env->callbacks.ClassLoad != NULL)
+	{
+	  ARG (JNIEnv *, jni_env);
+	  ARG (jclass, klass);
+	  env->callbacks.ClassLoad (env, jni_env, event_thread, klass);
+	}
+      break;
+
+    case JVMTI_EVENT_CLASS_PREPARE:
+      if (env->callbacks.ClassPrepare != NULL)
+	{
+	  ARG (JNIEnv *, jni_env);
+	  ARG (jclass, klass);
+	  env->callbacks.ClassPrepare (env, jni_env, event_thread, klass);
+	}
+      break;
+
+    case JVMTI_EVENT_VM_START:
+      if (env->callbacks.VMStart != NULL)
+	{
+	  ARG (JNIEnv *, jni_env);
+	  env->callbacks.VMStart (env, jni_env);
+	}
+      break;
+
+    case JVMTI_EVENT_EXCEPTION:
+      if (env->callbacks.Exception != NULL)
+	{
+	  ARG (JNIEnv *, jni_env);
+	  ARG (jmethodID, method);
+	  ARG (jlocation, location);
+	  ARG (jobject, exception);
+	  ARG (jmethodID, catch_method);
+	  ARG (jlocation, catch_location);
+	  env->callbacks.Exception (env, jni_env, event_thread, method,
+				    location, exception, catch_method,
+				    catch_location);
+	}
+      break;
+
+    case JVMTI_EVENT_EXCEPTION_CATCH:
+      if (env->callbacks.ExceptionCatch != NULL)
+	{
+	  ARG (JNIEnv *, jni_env);
+	  ARG (jmethodID, method);
+	  ARG (jlocation, location);
+	  ARG (jobject, exception);
+	  env->callbacks.ExceptionCatch (env, jni_env, event_thread, method,
+					 location, exception);
+	}
+      break;
+
+    case JVMTI_EVENT_SINGLE_STEP:
+      if (env->callbacks.SingleStep != NULL)
+	{
+	  ARG (JNIEnv *, jni_env);
+	  ARG (jmethodID, method);
+	  ARG (jlocation, location);
+	  env->callbacks.SingleStep (env, jni_env, event_thread, method,
+				     location);
+	}
+      break;
+
+    case JVMTI_EVENT_FRAME_POP:
+      if (env->callbacks.FramePop != NULL)
+	{
+	  ARG (JNIEnv *, jni_env);
+	  ARG (jmethodID, method);
+	  GET_BOOLEAN_ARG (was_popped_by_exception);
+	  env->callbacks.FramePop (env, jni_env, event_thread, method,
+				   was_popped_by_exception);
+	}
+      break;
+
+    case JVMTI_EVENT_BREAKPOINT:
+      if (env->callbacks.Breakpoint != NULL)
+	{
+	  ARG (JNIEnv *, jni_env);
+	  ARG (jmethodID, method);
+	  ARG (jlocation, location);
+	  env->callbacks.Breakpoint (env, jni_env, event_thread, method,
+				     location);
+	}
+      break;
+
+    case JVMTI_EVENT_FIELD_ACCESS:
+      if (env->callbacks.FieldAccess != NULL)
+	{
+	  ARG (JNIEnv *, jni_env);
+	  ARG (jmethodID, method);
+	  ARG (jlocation, location);
+	  ARG (jclass, field_class);
+	  ARG (jobject, object);
+	  ARG (jfieldID, field);
+	  env->callbacks.FieldAccess (env, jni_env, event_thread, method,
+				      location, field_class, object, field);
+	}
+      break;
+
+    case JVMTI_EVENT_FIELD_MODIFICATION:
+      if (env->callbacks.FieldModification != NULL)
+	{
+	  ARG (JNIEnv *, jni_env);
+	  ARG (jmethodID, method);
+	  ARG (jlocation, location);
+	  ARG (jclass, field_class);
+	  ARG (jobject, object);
+	  ARG (jfieldID, field);
+	  GET_CHAR_ARG (signature_type);
+	  ARG (jvalue, new_value);
+	  env->callbacks.FieldModification (env, jni_env, event_thread, method,
+					    location, field_class, object,
+					    field, signature_type, new_value);
+	}
+      break;
+
+    case JVMTI_EVENT_METHOD_ENTRY:
+      if (env->callbacks.MethodEntry != NULL)
+	{
+	  ARG (JNIEnv *, jni_env);
+	  ARG (jmethodID, method);
+	  env->callbacks.MethodEntry (env, jni_env, event_thread, method);
+	}
+      break;
+
+    case JVMTI_EVENT_METHOD_EXIT:
+      if (env->callbacks.MethodExit != NULL)
+	{
+	  ARG (JNIEnv *, jni_env);
+	  ARG (jmethodID, method);
+	  GET_BOOLEAN_ARG (was_popped_by_exception);
+	  ARG (jvalue, return_value);
+	  env->callbacks.MethodExit (env, jni_env, event_thread, method,
+				     was_popped_by_exception, return_value);
+	}
+      break;
+
+    case JVMTI_EVENT_NATIVE_METHOD_BIND:
+      if (env->callbacks.NativeMethodBind != NULL)
+	{
+	  ARG (JNIEnv *, jni_env);
+	  ARG (jmethodID, method);
+	  ARG (void *, address);
+	  ARG (void **, new_address_ptr);
+	  env->callbacks.NativeMethodBind (env, jni_env, event_thread, method,
+					   address, new_address_ptr);
+	}
+      break;
+
+    case JVMTI_EVENT_COMPILED_METHOD_LOAD:
+      if (env->callbacks.CompiledMethodLoad != NULL)
+	{
+	  ARG (jmethodID, method);
+	  ARG (jint, code_size);
+	  ARG (const void *, code_addr);
+	  ARG (jint, map_length);
+	  ARG (const jvmtiAddrLocationMap *, map);
+	  ARG (const void *, compile_info);
+	  env->callbacks.CompiledMethodLoad (env, method, code_size, code_addr,
+					     map_length, map, compile_info);
+	}
+      break;
+
+    case JVMTI_EVENT_COMPILED_METHOD_UNLOAD:
+      if (env->callbacks.CompiledMethodUnload != NULL)
+	{
+	  ARG (jmethodID, method);
+	  ARG (const void *, code_addr);
+	  env->callbacks.CompiledMethodUnload (env, method, code_addr);
+	}
+      break;
+
+    case JVMTI_EVENT_DYNAMIC_CODE_GENERATED:
+      if (env->callbacks.DynamicCodeGenerated != NULL)
+	{
+	  ARG (const char *, name);
+	  ARG (const void *, address);
+	  ARG (jint, length);
+	  env->callbacks.DynamicCodeGenerated (env, name, address, length);
+	}
+      break;
+
+    case JVMTI_EVENT_DATA_DUMP_REQUEST:
+      if (env->callbacks.DataDumpRequest != NULL)
+	{
+	  env->callbacks.DataDumpRequest (env);
+	}
+      break;
+
+    case JVMTI_EVENT_MONITOR_WAIT:
+      if (env->callbacks.MonitorWait != NULL)
+	{
+	  ARG (JNIEnv *, jni_env);
+	  ARG (jobject, object);
+	  ARG (jlong, timeout);
+	  env->callbacks.MonitorWait (env, jni_env, event_thread, object,
+				      timeout);
+	}
+      break;
+
+    case JVMTI_EVENT_MONITOR_WAITED:
+      if (env->callbacks.MonitorWaited != NULL)
+	{
+	  ARG (JNIEnv *, jni_env);
+	  ARG (jobject, object);
+	  GET_BOOLEAN_ARG (timed_out);
+	  env->callbacks.MonitorWaited (env, jni_env, event_thread, object,
+					timed_out);
+	}
+      break;
+
+    case JVMTI_EVENT_MONITOR_CONTENDED_ENTER:
+      if (env->callbacks.MonitorContendedEnter != NULL)
+	{
+	  ARG (JNIEnv *, jni_env);
+	  ARG (jobject, object);
+	  env->callbacks.MonitorContendedEnter (env, jni_env, event_thread,
+						object);
+	}
+      break;
+
+    case JVMTI_EVENT_MONITOR_CONTENDED_ENTERED:
+      if (env->callbacks.MonitorContendedEntered != NULL)
+	{
+	  ARG (JNIEnv *, jni_env);
+	  ARG (jobject, object);
+	  env->callbacks.MonitorContendedEntered (env, jni_env, event_thread,
+						  object);
+	}
+      break;
+
+    case JVMTI_EVENT_GARBAGE_COLLECTION_START:
+      if (env->callbacks.GarbageCollectionStart != NULL)
+	{
+	  env->callbacks.GarbageCollectionStart (env);
+	}
+      break;
+
+    case JVMTI_EVENT_GARBAGE_COLLECTION_FINISH:
+      if (env->callbacks.GarbageCollectionFinish != NULL)
+	{
+	  env->callbacks.GarbageCollectionFinish (env);
+	}
+      break;
+
+    case JVMTI_EVENT_OBJECT_FREE:
+      if (env->callbacks.ObjectFree != NULL)
+	{
+	  ARG (jlong, tag);
+	  env->callbacks.ObjectFree (env, tag);
+	}
+      break;
+
+    case JVMTI_EVENT_VM_OBJECT_ALLOC:
+      if (env->callbacks.VMObjectAlloc != NULL)
+	{
+	  ARG (JNIEnv *, jni_env);
+	  ARG (jobject, object);
+	  ARG (jclass, object_class);
+	  ARG (jlong, size);
+	  env->callbacks.VMObjectAlloc (env, jni_env, event_thread,
+					object, object_class, size);
+	}
+      break;
+
+    default:
+      fprintf (stderr, "libgcj: post of unknown JVMTI event (%d)\n",
+	       (int) type);
+      break;
+    }
+  va_end (args);
+#undef ARG
+#undef GET_BOOLEAN_ARG
+#undef GET_CHAR_ARG
+}
+
+/* Post an event to requesting JVMTI environments
+ *
+ * This function should not be called without consulting the
+ * JVMTI_REQUESTED_EVENT macro first (for speed). It does no real
+ * harm (other than kill speed), since this function will still
+ * only send the event if it was properly requested by an environment.
+ */ 
+void
+_Jv_JVMTI_PostEvent (jvmtiEvent type, jthread event_thread, ...)
+{
+  va_list args;
+  va_start (args, event_thread);
+
+  JvSynchronize dummy (_envListLock);
+  struct jvmti_env_list *e;
+  FOREACH_ENVIRONMENT (e)
+    {
+      /* Events are only posted if the event was explicitly enabled,
+	 it has a registered event handler, and the event thread
+	 matches (either globally or restricted to a specific thread).
+	 Here we check all but the event handler, which will be handled
+	 by post_event. */
+      if (e->env->enabled[EVENT_INDEX(type)]
+	  && (e->env->thread[EVENT_INDEX(type)] == NULL
+	      || e->env->thread[EVENT_INDEX(type)] == event_thread))
+	{
+	  post_event (e->env, type, event_thread, args);
+	}
+    }
+
+  va_end (args);
 }

libjava/testsuite/libjava.jvmti/events.java

+// Test JVMTI event notifications
+
+public class events
+{
+  public static native void do_events_tests ();
+
+  public static void main (String[] args)
+  {
+    System.out.println ("JVMTI event notification tests");
+    do_events_tests ();
+  }
+}

libjava/testsuite/libjava.jvmti/events.out

+JVMTI event notification tests
+- enable tests -
+created JVMTI environment #0
+created JVMTI environment #1
+created JVMTI environment #2
+setting callbacks for envs
+RequestedEvents: 
+enable VM_INIT for env0, env1, env2
+RequestedEvents: VMInit,
+enable VM_DEATH for env1,env2
+RequestedEvents: VMInit,VMDeath,
+enable THREAD_END for env2
+RequestedEvents: VMInit,VMDeath,ThreadEnd,
+disposing of env1
+RequestedEvents: VMInit,VMDeath,ThreadEnd,
+disposing of env0
+RequestedEvents: VMInit,VMDeath,ThreadEnd,
+disable VMInit in env2
+RequestedEvents: VMDeath,ThreadEnd,
+clear VMDeath callback in env2
+RequestedEvents: ThreadEnd,
+sending VMInit
+sending ThreadEnd
+ThreadEndCB jni_env=0x5678 thread=0x1234
+sending VMDeath
+disposing of env2
+RequestedEvents: 
+- callback arg tests -
+RequestedEvents: VMInit,VMDeath,ThreadStart,ThreadEnd,ClassFileLoadHook,ClassLoad,ClassPrepare,VMStart,Exception,ExceptionCatch,SingleStep,FramePop,Breakpoint,FieldAccess,FieldModification,MethodEntry,MethodExit,NativeMethodBind,CompiledMethodLoad,CompiledMethodUnload,DynamicCodeGenerated,DataDumpRequest,MonitorWait,MonitorWaited,MonitorContendedEnter,MonitorContendedEntered,GarbageCollectionStart,GarbageCollectionFinish,ObjectFree,VMObjectAlloc,
+VMInitCB jni_env=0x1 thread=0x2
+VMDeathCB jni_env=0x1
+ThreadStartCB jni_env=0x1 thread=0x2
+ThreadEndCB jni_env=0x1 thread=0x2
+ClassFileLoadHookCB jni_env=0x1 class_being_redefined=0x2 loader=0x3 name=4 protection_domain=0x5 class_data_len=6 class_data=0x7 new_class_data_len=0x8 new_class_data=0x9
+ClassLoadCB jni_env=0x1 thread=0x2 klass=0x3
+ClassPrepareCB jni_env=0x1 thread=0x2 klass=0x3
+VMStartCB jni_env=0x1
+ExceptionCB jni_env=0x1 thread=0x2 method=0x3 location=0x4 exception=0x5 catch_method=0x6 catch_location=0x7
+ExceptionCatchCB jni_env=0x1 thread=0x2 method=0x3 location=0x4 exception=0x5
+SingleStepCB jni_env=0x1 thread=0x2 method=0x3 location=0x4
+FramePopCB jni_env=0x1 thread=0x2 method=0x3 was_pooped_by_exception=1
+BreakpointCB  jni_env=0x1 thread=0x2 method=0x3 location=0x4
+FieldAccessCB jni_env=0x1 thread=0x2 method=0x3 location=0x4 field_klass=0x5 object=0x6 field=0x7
+FieldModificationCB  jni_env=0x1 thread=0x2 method=0x3 location=0x4 field_klass=0x5 object=0x6 field=0x7 signature_type=8 new_value=9
+MethodEntryCB jni_env=0x1 thread=0x2 method=0x3
+MethodExitCB jni_env=0x1 thread=0x2 method=0x3 was_popped_by_exception=1 return_value=5
+NativeMethodBindCB jni_env=0x1 thread=0x2 method=0x3 address=0x4 new_address_ptr=0x5
+CompiledMethodLoadCB method=0x1 code_size=0x2 code_addr=0x3 map_length=4 map=0x5 compile_info=0x6
+CompiledMethodUnloadCB method=0x1 code_addr=0x2
+DynamicCodeGeneratedCB name=1 address=0x2 length=3
+DataDumpRequestCB
+MonitorWaitCB jni_env=0x1 thread=0x2 object=0x3 timeout=4
+MonitorWaitedCB jni_env=0x1 thread=0x2 object=0x3 timed_out=1
+MonitorContendedEnterCB jni_env=0x1 thread=0x2 object=0x3
+MonitorContendedEnteredCB jni_env=0x1 thread=0x2 object=0x3
+GarbageCollectionStartCB
+GarbageCollectionFinishCB
+ObjectFreeCB tag=1
+VMObjectAllocCB jni_env=0x1 thread=0x2 object=0x3 object_klass=0x4 size=5

libjava/testsuite/libjava.jvmti/natevents.cc

+#include <gcj/cni.h>
+
+#include <jvm.h>
+#include <jvmti.h>
+#include <stdio.h>
+
+#include "jvmti-int.h"
+#include "events.h"
+
+static jvmtiEnv *env = NULL;
+
+void
+print_events ()
+{
+#define DO(X)					\
+  do						\
+    {						\
+      if (JVMTI_REQUESTED_EVENT (X))		\
+	printf (#X ",");			\
+    }						\
+  while (0)
+
+  printf ("RequestedEvents: ");
+  DO (VMInit);
+  DO (VMDeath);
+  DO (ThreadStart);
+  DO (ThreadEnd);
+  DO (ClassFileLoadHook);
+  DO (ClassLoad);
+  DO (ClassPrepare);
+  DO (VMStart);
+  DO (Exception);
+  DO (ExceptionCatch);
+  DO (SingleStep);
+  DO (FramePop);
+  DO (Breakpoint);
+  DO (FieldAccess);
+  DO (FieldModification);
+  DO (MethodEntry);
+  DO (MethodExit);
+  DO (NativeMethodBind);
+  DO (CompiledMethodLoad);
+  DO (CompiledMethodUnload);
+  DO (DynamicCodeGenerated);
+  DO (DataDumpRequest);
+  DO (MonitorWait);
+  DO (MonitorWaited);
+  DO (MonitorContendedEnter);
+  DO (MonitorContendedEntered);
+  DO (GarbageCollectionStart);
+  DO (GarbageCollectionFinish);
+  DO (ObjectFree);
+  DO (VMObjectAlloc);
+  printf ("\n");
+#undef DO
+}
+
+static void
+VMInitCB (jvmtiEnv *env, JNIEnv *jni_env, jthread thread)
+{
+  printf ("VMInitCB jni_env=%p thread=%p\n", jni_env, thread);
+}
+
+static void
+VMDeathCB (jvmtiEnv *env, JNIEnv *jni_env)
+{
+  printf ("VMDeathCB jni_env=%p\n", jni_env);
+}
+
+static void
+ThreadStartCB (jvmtiEnv *env, JNIEnv *jni_env, jthread thread)
+{
+  printf ("ThreadStartCB jni_env=%p thread=%p\n", jni_env, thread);
+}
+
+static void
+ThreadEndCB (jvmtiEnv *env, JNIEnv *jni_env, jthread thread)
+{
+  printf ("ThreadEndCB jni_env=%p thread=%p\n", jni_env, thread);
+}
+
+static void
+ClassFileLoadHookCB (jvmtiEnv *env, JNIEnv *jni_env,
+		     jclass class_being_redefined, jobject loader,
+		     const char *name, jobject protection_domain,
+		     jint class_data_len, const unsigned char *class_data,
+		     jint *new_class_data_len, unsigned char **new_class_data)
+{
+  printf ("ClassFileLoadHookCB jni_env=%p class_being_redefined=%p loader=%p",
+	  jni_env, class_being_redefined, loader);
+  printf (" name=%s protection_domain=%p class_data_len=%d class_data=%p",
+	  name, protection_domain, (int) class_data_len, class_data);
+  printf (" new_class_data_len=%p new_class_data=%p\n", new_class_data_len,
+	  new_class_data);
+}
+
+static void
+ClassLoadCB (jvmtiEnv *env, JNIEnv *jni_env, jthread thread, jclass klass)
+{
+  printf ("ClassLoadCB jni_env=%p thread=%p klass=%p\n", jni_env, thread,
+	  klass);
+}
+
+static void
+ClassPrepareCB (jvmtiEnv *env, JNIEnv *jni_env, jthread thread, jclass klass)
+{
+  printf ("ClassPrepareCB jni_env=%p thread=%p klass=%p\n", jni_env,
+	  thread, klass);
+}
+
+static void
+VMStartCB (jvmtiEnv *env, JNIEnv *jni_env)
+{
+  printf ("VMStartCB jni_env=%p\n", jni_env);
+}
+
+static void
+ExceptionCB (jvmtiEnv *env, JNIEnv *jni_env, jthread thread, jmethodID method,
+	     jlocation location, jobject exception, jmethodID catch_method,
+	     jlocation catch_location)
+{
+  printf ("ExceptionCB jni_env=%p thread=%p method=%p location=%p", jni_env,
+	  thread, method, location);
+  printf (" exception=%p catch_method=%p catch_location=%p\n", exception,
+	  catch_method, catch_location);
+}
+
+static void
+ExceptionCatchCB (jvmtiEnv *env, JNIEnv *jni_env, jthread thread,
+		  jmethodID method, jlocation location, jobject exception)
+{
+  printf ("ExceptionCatchCB jni_env=%p thread=%p method=%p location=%p",
+	  jni_env, thread, method, location);
+  printf (" exception=%p\n", exception);
+}
+
+static void
+SingleStepCB (jvmtiEnv *env, JNIEnv *jni_env, jthread thread, jmethodID method,
+	      jlocation location)
+{
+  printf ("SingleStepCB jni_env=%p thread=%p method=%p location=%p\n", 
+	  jni_env, thread, method, location);
+}
+
+static void
+FramePopCB (jvmtiEnv *env, JNIEnv *jni_env, jthread thread, jmethodID method,
+	    jboolean was_popped_by_exception)
+{
+  printf ("FramePopCB jni_env=%p thread=%p method=%p", jni_env, thread,
+	  method);
+  printf (" was_pooped_by_exception=%d\n", (was_popped_by_exception ?
+					    1 : 0));
+}
+
+static void
+BreakpointCB (jvmtiEnv *env, JNIEnv *jni_env, jthread thread, jmethodID method,
+	      jlocation location)
+{
+  printf ("BreakpointCB  jni_env=%p thread=%p method=%p location=%p\n",
+	  jni_env, thread, method, location);
+}
+
+static void
+FieldAccessCB (jvmtiEnv *env, JNIEnv *jni_env, jthread thread,
+	       jmethodID method, jlocation location, jclass field_klass,
+	       jobject object, jfieldID field)
+{
+  printf ("FieldAccessCB jni_env=%p thread=%p method=%p location=%p",
+	  jni_env, thread, method, location);
+  printf (" field_klass=%p object=%p field=%p\n", field_klass, object, field);
+}
+
+static void
+FieldModificationCB (jvmtiEnv *env, JNIEnv *jni_env, jthread thread,
+		     jmethodID method, jlocation location, jclass field_klass,
+		     jobject object, jfieldID field, char signature_type,
+		     jvalue new_value)
+
+{
+  printf ("FieldModificationCB  jni_env=%p thread=%p method=%p location=%p",
+	  jni_env, thread, method, location);
+  printf (" field_klass=%p object=%p field=%p signature_type=%c", field_klass,
+	  object, field, signature_type);
+  printf (" new_value=%d\n", (int) new_value.i);
+}
+
+static void
+MethodEntryCB (jvmtiEnv *env, JNIEnv *jni_env, jthread thread,
+	       jmethodID method)
+{
+  printf ("MethodEntryCB jni_env=%p thread=%p method=%p\n", jni_env, thread,
+	  method);
+}
+
+static void
+MethodExitCB (jvmtiEnv *env, JNIEnv *jni_env, jthread thread,
+	      jmethodID method, jboolean was_popped_by_exception,
+	      jvalue return_value)
+{
+  printf ("MethodExitCB jni_env=%p thread=%p method=%p", jni_env, thread,
+	  method);
+  printf (" was_popped_by_exception=%d return_value=%d\n",
+	  (was_popped_by_exception) ? 1 : 0, (int) return_value.i);
+}
+
+static void
+NativeMethodBindCB (jvmtiEnv *env, JNIEnv *jni_env, jthread thread,
+		    jmethodID method, void *address, void **new_address_ptr)
+{
+  printf ("NativeMethodBindCB jni_env=%p thread=%p method=%p", jni_env,
+	  thread, method);
+  printf (" address=%p new_address_ptr=%p\n", address, new_address_ptr);
+}
+
+static void
+CompiledMethodLoadCB (jvmtiEnv *env, jmethodID method, jint code_size,
+		      const void *code_addr, jint map_length,
+		      const jvmtiAddrLocationMap *map,
+		      const void *compile_info)
+{
+  printf ("CompiledMethodLoadCB method=%p code_size=%p code_addr=%p",
+	  method, code_size, code_addr);
+  printf (" map_length=%d map=%p compile_info=%p\n", (int) map_length, map,
+	  compile_info);
+}
+
+static void
+CompiledMethodUnloadCB (jvmtiEnv *env, jmethodID method, const void *code_addr)
+{
+  printf ("CompiledMethodUnloadCB method=%p code_addr=%p\n", method, 
+	  code_addr);
+}
+
+static void
+DynamicCodeGeneratedCB (jvmtiEnv *env, const char *name, const void *address,
+			jint length)
+{
+  printf ("DynamicCodeGeneratedCB name=%s address=%p length=%d\n", name,
+	  address, (int) length);
+}
+
+static void
+DataDumpRequestCB (jvmtiEnv *env)
+{
+  printf ("DataDumpRequestCB\n");
+}
+
+static void
+MonitorWaitCB (jvmtiEnv *env, JNIEnv *jni_env, jthread thread, jobject object,
+	       jlong timeout)
+{
+  printf ("MonitorWaitCB jni_env=%p thread=%p object=%p timeout=%ld\n",
+	  jni_env, thread, object, (long) timeout);
+}
+
+static void
+MonitorWaitedCB (jvmtiEnv *env, JNIEnv *jni_env, jthread thread,
+		 jobject object, jboolean timed_out)
+{
+  printf ("MonitorWaitedCB jni_env=%p thread=%p object=%p timed_out=%d\n",
+	  jni_env, thread, object, (timed_out) ? 1 : 0);
+}
+
+static void
+MonitorContendedEnterCB (jvmtiEnv *env, JNIEnv *jni_env, jthread thread,
+			 jobject object)
+{
+  printf ("MonitorContendedEnterCB jni_env=%p thread=%p object=%p\n",
+	  jni_env, thread, object);
+}
+
+static void
+MonitorContendedEnteredCB (jvmtiEnv *env, JNIEnv *jni_env, jthread thread,
+			   jobject object)
+{
+  printf ("MonitorContendedEnteredCB jni_env=%p thread=%p object=%p\n",
+	  jni_env, thread, object);
+}
+
+static void
+GarbageCollectionStartCB (jvmtiEnv *env)
+{
+  printf ("GarbageCollectionStartCB\n");
+}
+
+static void
+GarbageCollectionFinishCB (jvmtiEnv *env)
+{
+  printf ("GarbageCollectionFinishCB\n");
+}
+
+static void
+ObjectFreeCB (jvmtiEnv *env, jlong tag)
+{
+  printf ("ObjectFreeCB tag=%ld\n", (long) tag);
+}
+
+static void
+VMObjectAllocCB (jvmtiEnv *env, JNIEnv *jni_env, jthread thread,
+		 jobject object, jclass object_klass, jlong size)
+{
+  printf ("VMObjectAllocCB jni_env=%p thread=%p object=%p", jni_env,
+	  thread, object);
+  printf (" object_klass=%p size=%ld\n", object_klass, (long) size);
+}
+
+static void
+do_enable_tests ()
+{
+  printf ("- enable tests -\n");
+  JavaVM *vm = _Jv_GetJavaVM ();
+  jvmtiEnv *env[3];
+  int i;
+  for (i = 0; i < 3; ++i)
+    {
+      vm->GetEnv (reinterpret_cast<void **> (&env[i]), JVMTI_VERSION_1_0);
+      printf ("created JVMTI environment #%d\n", i);
+    }
+
+  jvmtiEventCallbacks callbacks;
+  memset (&callbacks, 0, sizeof (jvmtiEventCallbacks));
+
+  printf ("setting callbacks for envs\n");
+  callbacks.VMInit = VMInitCB;
+  env[0]->SetEventCallbacks (&callbacks, sizeof (callbacks));
+  callbacks.VMDeath = VMDeathCB;
+  env[1]->SetEventCallbacks (&callbacks, sizeof (callbacks));
+  callbacks.ThreadEnd = ThreadEndCB;
+  env[2]->SetEventCallbacks (&callbacks, sizeof (callbacks));
+  print_events ();
+
+  printf ("enable VM_INIT for env0, env1, env2\n");
+  env[0]->SetEventNotificationMode (JVMTI_ENABLE, JVMTI_EVENT_VM_INIT, NULL);
+  env[1]->SetEventNotificationMode (JVMTI_ENABLE, JVMTI_EVENT_VM_INIT, NULL);
+  env[2]->SetEventNotificationMode (JVMTI_ENABLE, JVMTI_EVENT_VM_INIT, NULL);
+  print_events ();
+
+  printf ("enable VM_DEATH for env1,env2\n");
+  env[1]->SetEventNotificationMode (JVMTI_ENABLE, JVMTI_EVENT_VM_DEATH, NULL);
+  env[2]->SetEventNotificationMode (JVMTI_ENABLE, JVMTI_EVENT_VM_DEATH, NULL);
+  print_events ();
+
+  /* Used to use a non-NULL event thread, but that causes problems
+     when SetEventNotificationMode tries to validate the thread. */
+  printf ("enable THREAD_END for env2\n");
+  env[2]->SetEventNotificationMode (JVMTI_ENABLE, JVMTI_EVENT_THREAD_END,
+				    NULL);
+  print_events ();
+
+  printf ("disposing of env1\n");
+  env[1]->DisposeEnvironment ();
+  print_events ();
+
+  printf ("disposing of env0\n");
+  env[0]->DisposeEnvironment ();
+  print_events ();
+
+  printf ("disable VMInit in env2\n");
+  env[2]->SetEventNotificationMode (JVMTI_DISABLE, JVMTI_EVENT_VM_INIT, NULL);
+  print_events ();
+
+  printf ("clear VMDeath callback in env2\n");
+  callbacks.VMDeath = NULL;
+  env[2]->SetEventCallbacks (&callbacks, sizeof (callbacks));
+  print_events ();
+
+  printf ("sending VMInit\n");
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_VM_INIT, (jthread) 0x1234,
+		       (JNIEnv *) 0x5678);
+
+  printf ("sending ThreadEnd\n");
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_THREAD_END, (jthread) 0x1234,
+		       (JNIEnv *) 0x5678);
+
+  /* See comment above re: SetEventNotificationMode and validity
+     checking
+  printf ("sending ThreadEnd (no match)\n");
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_THREAD_END, (jthread) 0x4321,
+		       (JNIEnv *) 0x5678);
+  */
+
+  printf ("sending VMDeath\n");
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_VM_DEATH, (jthread) NULL,
+		       (JNIEnv *) 0x5678);
+
+  printf ("disposing of env2\n");
+  env[2]->DisposeEnvironment ();
+  print_events ();
+}
+
+static void
+do_callback_arg_tests ()
+{
+  printf ("- callback arg tests -\n");
+  JavaVM *vm = _Jv_GetJavaVM ();
+  jvmtiEnv *env;
+  vm->GetEnv (reinterpret_cast<void **> (&env), JVMTI_VERSION_1_0);
+
+  // Define all the callbacks
+#define DEFINE(Event) callbacks.Event = Event ## CB;
+  jvmtiEventCallbacks callbacks;
+  DEFINE(VMInit);
+  DEFINE(VMDeath);
+  DEFINE(ThreadStart);
+  DEFINE(ThreadEnd);
+  DEFINE(ClassFileLoadHook);
+  DEFINE(ClassLoad);
+  DEFINE(ClassPrepare);
+  DEFINE(VMStart);
+  DEFINE(Exception);
+  DEFINE(ExceptionCatch);
+  DEFINE(SingleStep);
+  DEFINE(FramePop);
+  DEFINE(Breakpoint);
+  DEFINE(FieldAccess);
+  DEFINE(FieldModification);
+  DEFINE(MethodEntry);
+  DEFINE(MethodExit);
+  DEFINE(NativeMethodBind);
+  DEFINE(CompiledMethodLoad);
+  DEFINE(CompiledMethodUnload);
+  DEFINE(DynamicCodeGenerated);
+  DEFINE(DataDumpRequest);
+  DEFINE(MonitorWait);
+  DEFINE(MonitorWaited);
+  DEFINE(MonitorContendedEnter);
+  DEFINE(MonitorContendedEntered);
+  DEFINE(GarbageCollectionStart);
+  DEFINE(GarbageCollectionFinish);
+  DEFINE(ObjectFree);
+  DEFINE(VMObjectAlloc);
+#undef DEFINE
+  env->SetEventCallbacks (&callbacks, sizeof (callbacks));
+
+  // Enable all the callbacks
+#define ENABLE(Event)							\
+  env->SetEventNotificationMode (JVMTI_ENABLE, JVMTI_EVENT_ ## Event, NULL)
+  ENABLE (VM_INIT);
+  ENABLE (VM_DEATH);
+  ENABLE (THREAD_START);
+  ENABLE (THREAD_END);
+  ENABLE (CLASS_FILE_LOAD_HOOK);
+  ENABLE (CLASS_LOAD);
+  ENABLE (CLASS_PREPARE);
+  ENABLE (VM_START);
+  ENABLE (EXCEPTION);
+  ENABLE (EXCEPTION_CATCH);
+  ENABLE (SINGLE_STEP);
+  ENABLE (FRAME_POP);
+  ENABLE (BREAKPOINT);
+  ENABLE (FIELD_ACCESS);
+  ENABLE (FIELD_MODIFICATION);
+  ENABLE (METHOD_ENTRY);
+  ENABLE (METHOD_EXIT);
+  ENABLE (NATIVE_METHOD_BIND);
+  ENABLE (COMPILED_METHOD_LOAD);
+  ENABLE (COMPILED_METHOD_UNLOAD);
+  ENABLE (DYNAMIC_CODE_GENERATED);
+  ENABLE (DATA_DUMP_REQUEST);
+  ENABLE (MONITOR_WAIT);
+  ENABLE (MONITOR_WAITED);
+  ENABLE (MONITOR_CONTENDED_ENTER);
+  ENABLE (MONITOR_CONTENDED_ENTERED);
+  ENABLE (GARBAGE_COLLECTION_START);
+  ENABLE (GARBAGE_COLLECTION_FINISH);
+  ENABLE (OBJECT_FREE);
+  ENABLE (VM_OBJECT_ALLOC);
+
+  // All events should now be enabled.
+  print_events ();
+
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_VM_INIT, (jthread) 0x2, (JNIEnv *) 0x1);
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_VM_DEATH, (jthread) 0x2, (JNIEnv *) 0x1);
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_THREAD_START, (jthread) 0x2,
+		       (JNIEnv *) 0x1);
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_THREAD_END, (jthread) 0x2,
+		       (JNIEnv *) 0x1);
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_CLASS_FILE_LOAD_HOOK, (jthread) 0xb00,
+		       (JNIEnv *) 0x1, (jclass) 0x2, (jobject) 0x3,
+		       "4", (jobject) 0x5, (jint) 6,
+		       (const unsigned char *) 0x7, (jint *) 0x8,
+		       (unsigned char **) 0x9);
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_CLASS_LOAD, (jthread) 0x2, (JNIEnv *) 0x1,
+		       (jclass) 0x3);
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_CLASS_PREPARE, (jthread) 0x2,
+		       (JNIEnv *) 0x1, (jclass) 0x3);
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_VM_START, (jthread) 0xb00, (JNIEnv *) 0x1);
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_EXCEPTION, (jthread) 0x2, (JNIEnv *) 0x1,
+		       (jmethodID) 0x3, (jlocation) 0x4, (jobject) 0x5,
+		       (jmethodID) 0x6, (jlocation) 0x7);
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_EXCEPTION_CATCH, (jthread) 0x2,
+		       (JNIEnv *) 0x1, (jmethodID) 0x3, (jlocation) 0x4,
+		       (jobject) 0x5);
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_SINGLE_STEP, (jthread) 0x2, (JNIEnv *) 0x1,
+		       (jmethodID) 0x3, (jlocation) 0x4);
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_FRAME_POP, (jthread) 0x2, (JNIEnv *) 0x1,
+		       (jmethodID) 0x3, 4);
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_BREAKPOINT, (jthread) 0x2, (JNIEnv *) 0x1,
+		       (jmethodID) 0x3, (jlocation) 0x4);
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_FIELD_ACCESS, (jthread) 0x2,
+		       (JNIEnv *) 0x1, (jmethodID) 0x3, (jlocation) 0x4,
+		       (jclass) 0x5, (jobject) 0x6, (jfieldID) 0x7);
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_FIELD_MODIFICATION, (jthread) 0x2,
+		       (JNIEnv *) 0x1, (jmethodID) 0x3, (jlocation) 0x4,
+		       (jclass) 0x5, (jobject) 0x6, (jfieldID) 0x7,
+		       (int) '8', (/*jvalue*/ jobject) 0x9);
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_METHOD_ENTRY, (jthread) 0x2,
+		       (JNIEnv *) 0x1, (jmethodID) 0x3);
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_METHOD_EXIT, (jthread) 0x2,
+		       (JNIEnv *) 0x1, (jmethodID) 0x3, 4, /*jvalue*/ 5);
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_NATIVE_METHOD_BIND, (jthread) 0x2,
+		       (JNIEnv *) 0x1, (jmethodID) 0x3, (void *) 0x4,
+		       (void **) 0x5);
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_COMPILED_METHOD_LOAD, (jthread) 0xb00,
+		       (jmethodID) 0x1, (jint) 2, (const void *) 0x3,
+		       (jint) 4, (const jvmtiAddrLocationMap *) 0x5,
+		       (const void *) 0x6);
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_COMPILED_METHOD_UNLOAD, (jthread) 0xb00,
+		       (jmethodID) 0x1, (const void *) 0x2);
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_DYNAMIC_CODE_GENERATED, (jthread) 0xb00,
+		       "1", (const void *) 0x2, (jint) 3);
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_DATA_DUMP_REQUEST, (jthread) 0xb00);
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_MONITOR_WAIT, (jthread) 0x2,
+		       (JNIEnv *) 0x1, (jobject) 0x3, (jlong) 4);
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_MONITOR_WAITED, (jthread) 0x2,
+		       (JNIEnv *) 0x1, (jobject) 0x3, (int) 4);
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_MONITOR_CONTENDED_ENTER, (jthread) 0x2,
+		       (JNIEnv *) 0x1, (jobject) 0x3);
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_MONITOR_CONTENDED_ENTERED, (jthread) 0x2,
+		       (JNIEnv *) 0x1, (jobject) 0x3);
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_GARBAGE_COLLECTION_START, (jthread) 0xb00);
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_GARBAGE_COLLECTION_FINISH, (jthread) 0xb00);
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_OBJECT_FREE, (jthread) 0xb00, (jlong) 1);
+  _Jv_JVMTI_PostEvent (JVMTI_EVENT_VM_OBJECT_ALLOC, (jthread) 0x2,
+		       (JNIEnv *) 0x1, (jobject) 0x3, (jclass) 0x4,
+		       (jlong) 5);
+}
+
+void
+events::do_events_tests ()
+{
+  do_enable_tests ();
+  do_callback_arg_tests ();
+}