2003-10-21 Jerry Quinn <jlquinn@optonline.net>

        * posix-threads.cc (_Jv_CondNotify,_Jv_CondNotifyAll): Rename
        _Jv_PthreadCheckMonitor to _Jv_MutexCheckMonitor.
	* include/no-threads.h (_Jv_MutexCheckMonitor): New.
	* include/posix-threads.h (_Jv_MutexCheckMonitor): Rename from
        _Jv_PthreadCheckMonitor.  Simplify code.
	(_Jv_MutexUnlock): Use _Jv_MutexCheckMonitor.
	* include/win32-threads.h (_Jv_MutexCheckMonitor): New.
	* java/lang/Object.h (_Jv_ObjectCheckMonitor): Declare.
	* java/lang/Thread.java (holdsLock): New.
	* java/lang/natObject.cc (_Jv_ObjectCheckMonitor): New, with and
        without JV_HASH_SYNCHRONIZATION.
	* java/lang/natThread.cc (java::lang::Thread::holdsLock): New.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@72741 138bc75d-0d04-0410-961f-82ee72b054a4

3 files changed, 14 insertions, 6 deletions

diff --git a/libjava/include/no-threads.h b/libjava/include/no-threads.h
index 1cd2471b8cf..793cfadbf1b 100644
--- a/libjava/include/no-threads.h
+++ b/libjava/include/no-threads.h
@@ -75,6 +75,11 @@ _Jv_CondNotifyAll (_Jv_ConditionVariable_t *, _Jv_Mutex_t *)
 // Mutexes.
 //
 
+inline int _Jv_MutexCheckMonitor (_Jv_Mutex_t *mu)
+{
+  return 0;
+}
+
 inline void
 _Jv_MutexInit (_Jv_Mutex_t *)
 {
diff --git a/libjava/include/posix-threads.h b/libjava/include/posix-threads.h
index 6c8dcec933c..01606df021f 100644
--- a/libjava/include/posix-threads.h
+++ b/libjava/include/posix-threads.h
@@ -77,12 +77,9 @@ typedef struct
 // this out.  Returns 0 if the lock is held by the current thread, and
 // 1 otherwise.
 inline int
-_Jv_PthreadCheckMonitor (_Jv_Mutex_t *mu)
+_Jv_MutexCheckMonitor (_Jv_Mutex_t *mu)
 {
-  pthread_t self = pthread_self();
-  if (mu->owner == self)
-    return 0;
-  else return 1;
+  return (mu->owner != pthread_self());
 }
 
 //
@@ -155,7 +152,7 @@ _Jv_MutexLock (_Jv_Mutex_t *mu)
 inline int
 _Jv_MutexUnlock (_Jv_Mutex_t *mu)
 {
-  if (_Jv_PthreadCheckMonitor (mu))
+  if (_Jv_MutexCheckMonitor (mu))
     {
 #     ifdef LOCK_DEBUG
 	fprintf(stderr, "_Jv_MutexUnlock: Not owner\n");
diff --git a/libjava/include/win32-threads.h b/libjava/include/win32-threads.h
index ed5eb0047e0..fdd21c541b4 100644
--- a/libjava/include/win32-threads.h
+++ b/libjava/include/win32-threads.h
@@ -86,6 +86,12 @@ int _Jv_CondNotifyAll (_Jv_ConditionVariable_t *cv, _Jv_Mutex_t *);
 // We use CRITICAL_SECTIONs instead of CreateMutex() for better performance
 //
 
+// Returns 0 if the mutex lock is held by the current thread, and 1 otherwise.
+inline int _Jv_MutexCheckMonitor (_Jv_Mutex_t *mu)
+{
+  return (mu->owner != GetCurrentThreadId ( ));
+}
+
 inline void _Jv_MutexInit (_Jv_Mutex_t *mu)
 {
   mu->owner = 0UL;