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/include/jvmti-int.h

@@ -0,0 +1,85 @@
+/* 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__ */