GBA Thread: Make GBASyncWaitFrameStart time out

CHANGES

@@ -64,6 +64,7 @@ Misc:
  - Qt: Optimize logo drawing
  - Qt: Move frame upload back onto main thread
  - All: Enable link-time optimization
+ - GBA Thread: Make GBASyncWaitFrameStart time out
 
 0.1.1: (2015-01-24)
 Bugfixes:

src/gba/supervisor/thread.c

@@ -659,7 +659,9 @@ bool GBASyncWaitFrameStart(struct GBASync* sync, int frameskip) {
 		return false;
 	}
 	if (sync->videoFrameOn) {
-		ConditionWait(&sync->videoFrameAvailableCond, &sync->videoFrameMutex);
+		if (ConditionWaitTimed(&sync->videoFrameAvailableCond, &sync->videoFrameMutex, 20)) {
+			return false;
+		}
 	}
 	sync->videoFramePending = 0;
 	sync->videoFrameSkip = frameskip;

src/util/threading.h

@@ -10,6 +10,7 @@
 
 #ifdef USE_PTHREADS
 #include <pthread.h>
+#include <sys/time.h>
 
 #define THREAD_ENTRY void*
 typedef THREAD_ENTRY (*ThreadEntry)(void*);
@@ -46,6 +47,21 @@ static inline int ConditionWait(Condition* cond, Mutex* mutex) {
 	return pthread_cond_wait(cond, mutex);
 }
 
+static inline int ConditionWaitTimed(Condition* cond, Mutex* mutex, int32_t timeoutMs) {
+	struct timespec ts;
+	struct timeval tv;
+
+	gettimeofday(&tv, 0);
+	ts.tv_sec = tv.tv_sec;
+	ts.tv_nsec = (tv.tv_usec + timeoutMs * 1000L) * 1000L;
+	if (ts.tv_nsec >= 1000000000L) {
+		ts.tv_nsec -= 1000000000L;
+		++ts.tv_sec;
+	}
+
+	return pthread_cond_timedwait(cond, mutex, &ts);
+}
+
 static inline int ConditionWake(Condition* cond) {
 	return pthread_cond_broadcast(cond);
 }
@@ -104,6 +120,11 @@ static inline int ConditionWait(Condition* cond, Mutex* mutex) {
 	return GetLastError();
 }
 
+static inline int ConditionWaitTimed(Condition* cond, Mutex* mutex, int32_t timeoutMs) {
+	SleepConditionVariableCS(cond, mutex, timeoutMs);
+	return GetLastError();
+}
+
 static inline int ConditionWake(Condition* cond) {
 	WakeAllConditionVariable(cond);
 	return GetLastError();
@@ -163,6 +184,13 @@ static inline int ConditionWait(Condition* cond, Mutex* mutex) {
 	return 0;
 }
 
+static inline int ConditionWaitTimed(Condition* cond, Mutex* mutex, int32_t timeoutMs) {
+	UNUSED(cond);
+	UNUSED(mutex);
+	UNUSED(timeoutMs);
+	return 0;
+}
+
 static inline int ConditionWake(Condition* cond) {
 	UNUSED(cond);
 	return 0;