Add GL_ExtensionSupported in vid_null.c because vid_shared.c relies on

[xonotic/darkplaces.git] / thread_pthread.c

diff --git a/thread_pthread.c b/thread_pthread.c
index 9340403ebb91cbc39a992401004a9de8bb1e7fe6..7bded93dec2d6426c71bc190d7b70e500dfca777 100644 (file)
--- a/thread_pthread.c
+++ b/thread_pthread.c
@@ -31,8 +31,10 @@ void *_Thread_CreateMutex(const char *filename, int fileline)
        Sys_PrintfToTerminal("%p mutex create %s:%i\n" , mutexp, filename, fileline);
 #endif
 #ifdef THREADRECURSIVE
+       pthread_mutexattr_init(&attr);
        pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
        pthread_mutex_init(mutexp, &attr);
+       pthread_mutexattr_destroy(&attr);
 #else
        pthread_mutex_init(mutexp, NULL);
 #endif
@@ -142,4 +144,83 @@ int _Thread_WaitThread(void *thread, int retval, const char *filename, int filel
        return (int) (intptr_t) status;
 }
 
+#ifdef PTHREAD_BARRIER_SERIAL_THREAD
+void *_Thread_CreateBarrier(unsigned int count, const char *filename, int fileline)
+{
+       pthread_barrier_t *b = (pthread_barrier_t *) Z_Malloc(sizeof(pthread_barrier_t));
+#ifdef THREADDEBUG
+       Sys_PrintfToTerminal("%p barrier create(%d) %s:%i\n", b, count, filename, fileline);
+#endif
+       pthread_barrier_init(b, NULL, count);
+       return (void *) b;
+}
+
+void _Thread_DestroyBarrier(void *barrier, const char *filename, int fileline)
+{
+       pthread_barrier_t *b = (pthread_barrier_t *) barrier;
+#ifdef THREADDEBUG
+       Sys_PrintfToTerminal("%p barrier destroy %s:%i\n", b, filename, fileline);
+#endif
+       pthread_barrier_destroy(b);
+}
+
+void _Thread_WaitBarrier(void *barrier, const char *filename, int fileline)
+{
+       pthread_barrier_t *b = (pthread_barrier_t *) barrier;
+#ifdef THREADDEBUG
+       Sys_PrintfToTerminal("%p barrier wait %s:%i\n", b, filename, fileline);
+#endif
+       pthread_barrier_wait(b);
+}
+#else
+// standard barrier implementation using conds and mutexes
+// see: http://www.howforge.com/implementing-barrier-in-pthreads
+typedef struct {
+       unsigned int needed;
+       unsigned int called;
+       void *mutex;
+       void *cond;
+} barrier_t;
+
+void *_Thread_CreateBarrier(unsigned int count, const char *filename, int fileline)
+{
+       volatile barrier_t *b = (volatile barrier_t *) Z_Malloc(sizeof(barrier_t));
+#ifdef THREADDEBUG
+       Sys_PrintfToTerminal("%p barrier create(%d) %s:%i\n", b, count, filename, fileline);
+#endif
+       b->needed = count;
+       b->called = 0;
+       b->mutex = Thread_CreateMutex();
+       b->cond = Thread_CreateCond();
+       return (void *) b;
+}
 
+void _Thread_DestroyBarrier(void *barrier, const char *filename, int fileline)
+{
+       volatile barrier_t *b = (volatile barrier_t *) barrier;
+#ifdef THREADDEBUG
+       Sys_PrintfToTerminal("%p barrier destroy %s:%i\n", b, filename, fileline);
+#endif
+       Thread_DestroyMutex(b->mutex);
+       Thread_DestroyCond(b->cond);
+}
+
+void _Thread_WaitBarrier(void *barrier, const char *filename, int fileline)
+{
+       volatile barrier_t *b = (volatile barrier_t *) barrier;
+#ifdef THREADDEBUG
+       Sys_PrintfToTerminal("%p barrier wait %s:%i\n", b, filename, fileline);
+#endif
+       Thread_LockMutex(b->mutex);
+       b->called++;
+       if (b->called == b->needed) {
+               b->called = 0;
+               Thread_CondBroadcast(b->cond);
+       } else {
+               do {
+                       Thread_CondWait(b->cond, b->mutex);
+               } while(b->called);
+       }
+       Thread_UnlockMutex(b->mutex);
+}
+#endif