+
+/*****************************************************************************
+ * vlc_cond_timedwait: wait until condition completion or expiration
+ *****************************************************************************
+ * Returns 0 if object signaled, an error code in case of timeout or error.
+ *****************************************************************************/
+#define vlc_cond_timedwait( P_COND, P_MUTEX, DEADLINE ) \
+ __vlc_cond_timedwait( __FILE__, __LINE__, P_COND, P_MUTEX, DEADLINE )
+
+static inline int __vlc_cond_timedwait( const char * psz_file, int i_line,
+ vlc_cond_t *p_condvar,
+ vlc_mutex_t *p_mutex,
+ mtime_t deadline )
+{
+ int i_res;
+ unsigned long int i_thread = 0;
+
+#if defined( PTH_INIT_IN_PTH_H )
+# error Unimplemented
+#elif defined( ST_INIT_IN_ST_H )
+# error Unimplemented
+#elif defined( UNDER_CE )
+ mtime_t delay_ms = (deadline - mdate())/1000;
+
+ DWORD result;
+ if( delay_ms < 0 )
+ delay_ms = 0;
+
+ p_condvar->i_waiting_threads++;
+ LeaveCriticalSection( &p_mutex->csection );
+ result = WaitForSingleObject( p_condvar->event, delay_ms );
+ p_condvar->i_waiting_threads--;
+
+ /* Reacquire the mutex before returning. */
+ vlc_mutex_lock( p_mutex );
+
+ i_res = (int)result;
+
+#elif defined( WIN32 )
+ DWORD result;
+
+ mtime_t delay_ms = (deadline - mdate())/1000;
+ if( delay_ms < 0 )
+ delay_ms = 0;
+
+ if( !p_condvar->semaphore )
+ {
+ /* Increase our wait count */
+ p_condvar->i_waiting_threads++;
+
+ if( p_mutex->mutex )
+ {
+ /* It is only possible to atomically release the mutex and
+ * initiate the waiting on WinNT/2K/XP. Win9x doesn't have
+ * SignalObjectAndWait(). */
+ result = p_condvar->SignalObjectAndWait( p_mutex->mutex,
+ p_condvar->event,
+ delay_ms, FALSE );
+ }
+ else
+ {
+ LeaveCriticalSection( &p_mutex->csection );
+ result = WaitForSingleObject( p_condvar->event, delay_ms );
+ }
+
+ p_condvar->i_waiting_threads--;
+ }
+ else if( p_condvar->i_win9x_cv == 1 )
+ {
+ int i_waiting_threads;
+
+ /* Wait for the gate to be open */
+ result = WaitForSingleObject( p_condvar->event, delay_ms );
+
+ /* Increase our wait count */
+ p_condvar->i_waiting_threads++;
+
+ LeaveCriticalSection( &p_mutex->csection );
+ if( !result )
+ {
+ /* recaculate remaining delay */
+ delay_ms = (deadline - mdate())/1000;
+ if( delay_ms < 0 )
+ delay_ms = 0;
+
+ result = WaitForSingleObject( p_condvar->semaphore, delay_ms );
+ }
+
+ /* Decrement and test must be atomic */
+ EnterCriticalSection( &p_condvar->csection );
+
+ /* Decrease our wait count */
+ i_waiting_threads = --p_condvar->i_waiting_threads;
+
+ LeaveCriticalSection( &p_condvar->csection );
+
+ /* Reopen the gate if we were the last waiting thread */
+ if( !i_waiting_threads )
+ SetEvent( p_condvar->event );
+ }
+ else
+ {
+ int i_waiting_threads;
+
+ /* Increase our wait count */
+ p_condvar->i_waiting_threads++;
+
+ LeaveCriticalSection( &p_mutex->csection );
+ result = WaitForSingleObject( p_condvar->semaphore, delay_ms );
+
+ /* Decrement and test must be atomic */
+ EnterCriticalSection( &p_condvar->csection );
+
+ /* Decrease our wait count */
+ i_waiting_threads = --p_condvar->i_waiting_threads;
+
+ LeaveCriticalSection( &p_condvar->csection );
+
+ /* Signal that the last waiting thread just went through */
+ if( !i_waiting_threads )
+ SetEvent( p_condvar->event );
+ }
+
+ /* Reacquire the mutex before returning. */
+ vlc_mutex_lock( p_mutex );
+
+ i_res = (int)result;
+
+#elif defined( HAVE_KERNEL_SCHEDULER_H )
+# error Unimplemented
+#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
+ lldiv_t d = lldiv( deadline, 1000000 );
+ struct timespec ts = { d.quot, d.rem * 1000 };
+
+ i_res = pthread_cond_timedwait( &p_condvar->cond, &p_mutex->mutex, &ts );
+ if( i_res == ETIMEDOUT )
+ return ETIMEDOUT; /* this error is perfectly normal */
+ else
+ if ( i_res ) /* other errors = bug */
+ {
+ i_thread = CAST_PTHREAD_TO_INT(pthread_self());
+ errno = i_res;
+ }
+
+#elif defined( HAVE_CTHREADS_H )
+# error Unimplemented
+#endif
+
+ if( i_res )
+ {
+ msg_Err( p_condvar->p_this,
+ "thread %li: cond_wait failed at %s:%d (%d:%m)",
+ i_thread, psz_file, i_line, i_res );
+ }
+
+ return i_res;
+}
+