Added Condition Variables to thread library

git-svn-id: svn://svn.code.sf.net/p/sc2/code/trunk@383 8092fc87-c524-0410-9efc-e669fe64eaf9

sc2/src/sc2code/libs/threadlib.h

@@ -83,7 +83,6 @@ extern Thread CreateThreadAux (ThreadFunction func, void *data,
 #	define CreateThread(func, data, stackSize, name) \
 		CreateThreadAux ((func), (data), (stackSize))
 #endif  /* !defined(THREAD_NAMES) */
-extern void KillThread (Thread thread);
 extern void SleepThread (TimePeriod timePeriod);
 extern void SleepThreadUntil (TimeCount wakeTime);
 extern void TaskSwitch (void);
@@ -106,6 +105,12 @@ extern void DestroyMutex (Mutex sem);
 extern int LockMutex (Mutex sem);
 extern void UnlockMutex (Mutex sem);
 
+typedef void *CondVar;
+extern CondVar CreateCondVar (void);
+extern void DestroyCondVar (CondVar);
+extern void WaitCondVar (CondVar);
+extern void SignalCondVar (CondVar);
+extern void BroadcastCondVar (CondVar);
 
 #endif  /* _THREADLIB_H */
 

sc2/src/sc2code/libs/threads/sdl/sdlthreads.c

@@ -66,3 +66,15 @@ SDLWrapper_TaskSwitch (void) {
 	SDL_Delay (1);
 }
 
+void
+SDLWrapper_WaitCondVar (CondVar cv) {
+	int result;
+	Mutex temp = CreateMutex ();
+	LockMutex (temp);
+	result = SDL_CondWait (cv, temp);
+	UnlockMutex (temp);
+	DestroyMutex (temp);
+	if (result != 0) {
+		fprintf (stderr, "Error result from SDL_CondWait: %d\n", result);
+	}
+}

sc2/src/sc2code/libs/threads/sdl/sdlthreads.h

@@ -77,5 +77,18 @@ typedef SDL_mutex *NativeMutex;
 #define NativeUnlockMutex(mutex) \
 		SDL_mutexV ((mutex))
 
+typedef SDL_cond *NativeCondVar;
+#define NativeCreateCondVar() \
+		SDL_CreateCond ()
+#define NativeDestroyCondVar(condvar) \
+		SDL_DestroyCond((condvar))
+#define NativeWaitCondVar(condvar) \
+		SDLWrapper_WaitCondVar((condvar))
+#define NativeSignalCondVar(condvar) \
+		SDL_CondSignal((condvar))
+#define NativeBroadcastCondVar(condvar) \
+		SDL_CondBroadcast((condvar))
+
+
 #endif  /* _SDLTHREAD_H */
 

sc2/src/sc2code/libs/threads/thrcommon.c

@@ -353,4 +353,27 @@ UnlockMutex (Mutex sem)
 	NativeUnlockMutex ((NativeMutex) sem);
 }
 
+CondVar
+CreateCondVar ()
+{
+	return NativeCreateCondVar ();
+}
+void DestroyCondVar (CondVar cv)
+{
+	NativeDestroyCondVar (cv);
+}
 
+void WaitCondVar (CondVar cv)
+{
+	NativeWaitCondVar (cv);
+}
+
+void SignalCondVar (CondVar cv)
+{
+	NativeSignalCondVar (cv);
+}
+
+void BroadcastCondVar (CondVar cv)
+{
+	NativeBroadcastCondVar (cv);
+}