]> git.sesse.net Git - vlc/blobdiff - include/vlc_threads_funcs.h
vlc_mutex_init_recursive: remove useless parameter
[vlc] / include / vlc_threads_funcs.h
index dc228a0453223f835ada6daa74bee918d9c029e0..dc632e9449197133788486a23601d9650f1f7650 100644 (file)
@@ -45,33 +45,21 @@ VLC_EXPORT( void,  __vlc_mutex_destroy, ( const char *, int, vlc_mutex_t * ) );
 VLC_EXPORT( int,  __vlc_cond_init,     ( vlc_cond_t * ) );
 VLC_EXPORT( void,  __vlc_cond_destroy,  ( const char *, int, vlc_cond_t * ) );
 VLC_EXPORT( int, __vlc_threadvar_create, (vlc_threadvar_t * ) );
-VLC_EXPORT( int,  __vlc_thread_create, ( vlc_object_t *, const char *, int, const char *, void * ( * ) ( void * ), int, vlc_bool_t ) );
+VLC_EXPORT( int,  __vlc_thread_create, ( vlc_object_t *, const char *, int, const char *, void * ( * ) ( void * ), int, bool ) );
 VLC_EXPORT( int,  __vlc_thread_set_priority, ( vlc_object_t *, const char *, int, int ) );
 VLC_EXPORT( void, __vlc_thread_ready,  ( vlc_object_t * ) );
 VLC_EXPORT( void, __vlc_thread_join,   ( vlc_object_t *, const char *, int ) );
 
-/*****************************************************************************
- * vlc_threads_init: initialize threads system
- *****************************************************************************/
-#define vlc_threads_init( P_THIS )                                          \
-    __vlc_threads_init( VLC_OBJECT(P_THIS) )
-
-/*****************************************************************************
- * vlc_threads_end: deinitialize threads system
- *****************************************************************************/
-#define vlc_threads_end( P_THIS )                                           \
-    __vlc_threads_end( VLC_OBJECT(P_THIS) )
-
 /*****************************************************************************
  * vlc_mutex_init: initialize a mutex
  *****************************************************************************/
-#define vlc_mutex_init( P_THIS, P_MUTEX )                                   \
+#define vlc_mutex_init( P_MUTEX )                                   \
     __vlc_mutex_init( P_MUTEX )
 
 /*****************************************************************************
  * vlc_mutex_init: initialize a recursive mutex (Don't use it)
  *****************************************************************************/
-#define vlc_mutex_init_recursive( P_THIS, P_MUTEX )                         \
+#define vlc_mutex_init_recursive( P_MUTEX )                         \
     __vlc_mutex_init_recursive( P_MUTEX )
 
 /*****************************************************************************
@@ -94,21 +82,22 @@ static inline void __vlc_mutex_lock( const char * psz_file, int i_line,
                                     vlc_mutex_t * p_mutex )
 {
 #if defined( UNDER_CE )
+    VLC_UNUSED( psz_file); VLC_UNUSED( i_line );
+
     EnterCriticalSection( &p_mutex->csection );
 
 #elif defined( WIN32 )
-    if( p_mutex->mutex )
-        WaitForSingleObject( p_mutex->mutex, INFINITE );
-    else
-        EnterCriticalSection( &p_mutex->csection );
+    VLC_UNUSED( psz_file); VLC_UNUSED( i_line );
+
+    WaitForSingleObject( *p_mutex, INFINITE );
 
 #elif defined( HAVE_KERNEL_SCHEDULER_H )
     acquire_sem( p_mutex->lock );
 
 #elif defined(LIBVLC_USE_PTHREAD)
 #   define vlc_assert_locked( m ) \
-           assert (pthread_mutex_lock (&((m)->mutex)) == EDEADLK)
-    int val = pthread_mutex_lock( &p_mutex->mutex );
+           assert (pthread_mutex_lock (m) == EDEADLK)
+    int val = pthread_mutex_lock( p_mutex );
     VLC_THREAD_ASSERT ("locking mutex");
 
 #endif
@@ -128,19 +117,20 @@ static inline void __vlc_mutex_unlock( const char * psz_file, int i_line,
                                       vlc_mutex_t *p_mutex )
 {
 #if defined( UNDER_CE )
+    VLC_UNUSED( psz_file); VLC_UNUSED( i_line );
+
     LeaveCriticalSection( &p_mutex->csection );
 
 #elif defined( WIN32 )
-    if( p_mutex->mutex )
-        ReleaseMutex( p_mutex->mutex );
-    else
-        LeaveCriticalSection( &p_mutex->csection );
+    VLC_UNUSED( psz_file); VLC_UNUSED( i_line );
+
+    ReleaseMutex( *p_mutex );
 
 #elif defined( HAVE_KERNEL_SCHEDULER_H )
     release_sem( p_mutex->lock );
 
 #elif defined(LIBVLC_USE_PTHREAD)
-    int val = pthread_mutex_unlock( &p_mutex->mutex );
+    int val = pthread_mutex_unlock( p_mutex );
     VLC_THREAD_ASSERT ("unlocking mutex");
 
 #endif
@@ -167,51 +157,16 @@ static inline void __vlc_mutex_unlock( const char * psz_file, int i_line,
 static inline void __vlc_cond_signal( const char * psz_file, int i_line,
                                       vlc_cond_t *p_condvar )
 {
-#if defined( UNDER_CE )
-    PulseEvent( p_condvar->event );
+#if defined( UNDER_CE ) || defined( WIN32 )
+    VLC_UNUSED( psz_file); VLC_UNUSED( i_line );
 
-#elif defined( WIN32 )
     /* Release one waiting thread if one is available. */
     /* For this trick to work properly, the vlc_cond_signal must be surrounded
      * by a mutex. This will prevent another thread from stealing the signal */
-    if( !p_condvar->semaphore )
-    {
-        /* PulseEvent() only works if none of the waiting threads is suspended.
-         * This is particularily problematic under a debug session.
-         * as documented in http://support.microsoft.com/kb/q173260/ */
-        PulseEvent( p_condvar->event );
-    }
-    else if( p_condvar->i_win9x_cv == 1 )
-    {
-        /* Wait for the gate to be open */
-        WaitForSingleObject( p_condvar->event, INFINITE );
-
-        if( p_condvar->i_waiting_threads )
-        {
-            /* Using a semaphore exposes us to a race condition. It is
-             * possible for another thread to start waiting on the semaphore
-             * just after we signaled it and thus steal the signal.
-             * We have to prevent new threads from entering the cond_wait(). */
-            ResetEvent( p_condvar->event );
-
-            /* A semaphore is used here because Win9x doesn't have
-             * SignalObjectAndWait() and thus a race condition exists
-             * during the time we release the mutex and the time we start
-             * waiting on the event (more precisely, the signal can sometimes
-             * be missed by the waiting thread if we use PulseEvent()). */
-            ReleaseSemaphore( p_condvar->semaphore, 1, 0 );
-        }
-    }
-    else
-    {
-        if( p_condvar->i_waiting_threads )
-        {
-            ReleaseSemaphore( p_condvar->semaphore, 1, 0 );
-
-            /* Wait for the last thread to be awakened */
-            WaitForSingleObject( p_condvar->event, INFINITE );
-        }
-    }
+    /* PulseEvent() only works if none of the waiting threads is suspended.
+     * This is particularily problematic under a debug session.
+     * as documented in http://support.microsoft.com/kb/q173260/ */
+    PulseEvent( p_condvar->event );
 
 #elif defined( HAVE_KERNEL_SCHEDULER_H )
     while( p_condvar->thread != -1 )
@@ -236,7 +191,7 @@ static inline void __vlc_cond_signal( const char * psz_file, int i_line,
     }
 
 #elif defined(LIBVLC_USE_PTHREAD)
-    int val = pthread_cond_signal( &p_condvar->cond );
+    int val = pthread_cond_signal( p_condvar );
     VLC_THREAD_ASSERT ("signaling condition variable");
 
 #endif
@@ -261,75 +216,12 @@ static inline void __vlc_cond_wait( const char * psz_file, int i_line,
     vlc_mutex_lock( p_mutex );
 
 #elif defined( WIN32 )
-    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(). */
-            p_condvar->SignalObjectAndWait( p_mutex->mutex,
-                                            p_condvar->event,
-                                            INFINITE, FALSE );
-        }
-        else
-        {
-            LeaveCriticalSection( &p_mutex->csection );
-            WaitForSingleObject( p_condvar->event, INFINITE );
-        }
-
-        p_condvar->i_waiting_threads--;
-    }
-    else if( p_condvar->i_win9x_cv == 1 )
-    {
-        int i_waiting_threads;
-
-        /* Wait for the gate to be open */
-        WaitForSingleObject( p_condvar->event, INFINITE );
-
-        /* Increase our wait count */
-        p_condvar->i_waiting_threads++;
-
-        LeaveCriticalSection( &p_mutex->csection );
-        WaitForSingleObject( p_condvar->semaphore, INFINITE );
-
-        /* 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 );
-        WaitForSingleObject( p_condvar->semaphore, INFINITE );
-
-        /* Decrement and test must be atomic */
-        EnterCriticalSection( &p_condvar->csection );
-
-        /* Decrease our wait count */
-        i_waiting_threads = --p_condvar->i_waiting_threads;
+    VLC_UNUSED( psz_file); VLC_UNUSED( i_line );
 
-        LeaveCriticalSection( &p_condvar->csection );
-
-        /* Signal that the last waiting thread just went through */
-        if( !i_waiting_threads )
-            SetEvent( p_condvar->event );
-    }
+    /* Increase our wait count */
+    p_condvar->i_waiting_threads++;
+    SignalObjectAndWait( *p_mutex, p_condvar->event, INFINITE, FALSE );
+    p_condvar->i_waiting_threads--;
 
     /* Reacquire the mutex before returning. */
     vlc_mutex_lock( p_mutex );
@@ -346,7 +238,7 @@ static inline void __vlc_cond_wait( const char * psz_file, int i_line,
     vlc_mutex_lock( p_mutex );
 
 #elif defined(LIBVLC_USE_PTHREAD)
-    int val = pthread_cond_wait( &p_condvar->cond, &p_mutex->mutex );
+    int val = pthread_cond_wait( p_condvar, p_mutex );
     VLC_THREAD_ASSERT ("waiting on condition");
 
 #endif
@@ -385,89 +277,19 @@ static inline int __vlc_cond_timedwait( const char * psz_file, int i_line,
        return ETIMEDOUT; /* this error is perfectly normal */
 
 #elif defined( WIN32 )
+    VLC_UNUSED( psz_file); VLC_UNUSED( i_line );
+
     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 );
-    }
+    /* Increase our wait count */
+    p_condvar->i_waiting_threads++;
+    result = SignalObjectAndWait( *p_mutex, p_condvar->event,
+                                  delay_ms, FALSE );
+    p_condvar->i_waiting_threads--;
 
     /* Reacquire the mutex before returning. */
     vlc_mutex_lock( p_mutex );
@@ -481,7 +303,7 @@ static inline int __vlc_cond_timedwait( const char * psz_file, int i_line,
     lldiv_t d = lldiv( deadline, 1000000 );
     struct timespec ts = { d.quot, d.rem * 1000 };
 
-    int val = pthread_cond_timedwait (&p_condvar->cond, &p_mutex->mutex, &ts);
+    int val = pthread_cond_timedwait (p_condvar, p_mutex, &ts);
     if (val == ETIMEDOUT)
         return ETIMEDOUT; /* this error is perfectly normal */
     VLC_THREAD_ASSERT ("timed-waiting on condition");
@@ -511,13 +333,13 @@ static inline int vlc_threadvar_set( vlc_threadvar_t * p_tls, void *p_value )
     int i_ret;
 
 #if defined( HAVE_KERNEL_SCHEDULER_H )
-    return -1;
+    i_ret = EINVAL;
 
 #elif defined( UNDER_CE ) || defined( WIN32 )
-    i_ret = ( TlsSetValue( p_tls->handle, p_value ) != 0 );
+    i_ret = TlsSetValue( *p_tls, p_value ) ? EINVAL : 0;
 
 #elif defined(LIBVLC_USE_PTHREAD)
-    i_ret = pthread_setspecific( p_tls->handle, p_value );
+    i_ret = pthread_setspecific( *p_tls, p_value );
 
 #endif
 
@@ -529,15 +351,16 @@ static inline int vlc_threadvar_set( vlc_threadvar_t * p_tls, void *p_value )
  *****************************************************************************/
 static inline void* vlc_threadvar_get( vlc_threadvar_t * p_tls )
 {
-    voidp_ret;
+    void *p_ret;
 
 #if defined( HAVE_KERNEL_SCHEDULER_H )
     p_ret = NULL;
+
 #elif defined( UNDER_CE ) || defined( WIN32 )
-    p_ret = TlsGetValue( p_tls->handle );
+    p_ret = TlsGetValue( *p_tls );
 
 #elif defined(LIBVLC_USE_PTHREAD)
-    p_ret = pthread_getspecific( p_tls->handle );
+    p_ret = pthread_getspecific( *p_tls );
 
 #endif
 
@@ -565,6 +388,7 @@ static inline void vlc_spin_lock (vlc_spinlock_t *spin)
 {
     int val = pthread_spin_lock (&spin->spin);
     assert (val == 0);
+    (void)val;
 }
 
 /**
@@ -574,6 +398,7 @@ static inline void vlc_spin_unlock (vlc_spinlock_t *spin)
 {
     int val = pthread_spin_unlock (&spin->spin);
     assert (val == 0);
+    (void)val;
 }
 
 /**
@@ -583,6 +408,7 @@ static inline void vlc_spin_destroy (vlc_spinlock_t *spin)
 {
     int val = pthread_spin_destroy (&spin->spin);
     assert (val == 0);
+    (void)val;
 }
 
 #elif defined( WIN32 )