X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=include%2Fvlc_threads.h;h=8cf3d37a5fab07ff262575bfe8afb26fc61df2e7;hb=e2c1b16917c657b054a19c0a14255d3daffd6e8d;hp=374d01d55e25c5a25dc062371a2a0cf5cf04346b;hpb=43b5fcef1b26f16914028b5954a846aff685c881;p=vlc

diff --git a/include/vlc_threads.h b/include/vlc_threads.h
index 374d01d55e..8cf3d37a5f 100644
--- a/include/vlc_threads.h
+++ b/include/vlc_threads.h
@@ -105,8 +105,16 @@
 #if defined (LIBVLC_USE_PTHREAD)
 typedef pthread_t       vlc_thread_t;
 typedef pthread_mutex_t vlc_mutex_t;
+#define VLC_STATIC_MUTEX PTHREAD_MUTEX_INITIALIZER
 typedef pthread_cond_t  vlc_cond_t;
 typedef pthread_key_t   vlc_threadvar_t;
+typedef struct vlc_timer_t vlc_timer_t;
+struct vlc_timer_t
+{
+    timer_t handle;
+    void (*func) (vlc_timer_t *, void *);
+    void *data;
+};
 
 #elif defined( WIN32 )
 typedef struct
@@ -114,15 +122,30 @@ typedef struct
     HANDLE handle;
     void  *(*entry) (void *);
     void  *data;
+#if defined( UNDER_CE )
+    HANDLE cancel_event;
+#endif
 } *vlc_thread_t;
 
 typedef struct
 {
+    LONG initialized;
     CRITICAL_SECTION mutex;
-}
-vlc_mutex_t;
+} vlc_mutex_t;
+#define VLC_STATIC_MUTEX { 0, }
+
 typedef HANDLE  vlc_cond_t;
 typedef DWORD   vlc_threadvar_t;
+typedef struct vlc_timer_t vlc_timer_t;
+struct vlc_timer_t
+{
+    HANDLE handle;
+    void (*func) (vlc_timer_t *, void *);
+    void *data;
+    unsigned overrun;
+    CRITICAL_SECTION serializer;
+    LONG volatile counter;
+};
 
 #endif
 
@@ -133,12 +156,13 @@ typedef DWORD   vlc_threadvar_t;
 /*****************************************************************************
  * Function definitions
  *****************************************************************************/
-VLC_EXPORT( int,  vlc_mutex_init,    ( vlc_mutex_t * ) );
-VLC_EXPORT( int,  vlc_mutex_init_recursive, ( vlc_mutex_t * ) );
+VLC_EXPORT( void, vlc_mutex_init,    ( vlc_mutex_t * ) );
+VLC_EXPORT( void, vlc_mutex_init_recursive, ( vlc_mutex_t * ) );
 VLC_EXPORT( void, vlc_mutex_destroy, ( vlc_mutex_t * ) );
 VLC_EXPORT( void, vlc_mutex_lock, ( vlc_mutex_t * ) );
+VLC_EXPORT( int,  vlc_mutex_trylock, ( vlc_mutex_t * ) LIBVLC_USED );
 VLC_EXPORT( void, vlc_mutex_unlock, ( vlc_mutex_t * ) );
-VLC_EXPORT( int,  vlc_cond_init,     ( vlc_cond_t * ) );
+VLC_EXPORT( void, vlc_cond_init,     ( vlc_cond_t * ) );
 VLC_EXPORT( void, vlc_cond_destroy,  ( vlc_cond_t * ) );
 VLC_EXPORT( void, vlc_cond_signal, (vlc_cond_t *) );
 VLC_EXPORT( void, vlc_cond_broadcast, (vlc_cond_t *) );
@@ -146,73 +170,33 @@ VLC_EXPORT( void, vlc_cond_wait, (vlc_cond_t *, vlc_mutex_t *) );
 VLC_EXPORT( int, vlc_cond_timedwait, (vlc_cond_t *, vlc_mutex_t *, mtime_t) );
 VLC_EXPORT( int, vlc_threadvar_create, (vlc_threadvar_t * , void (*) (void *) ) );
 VLC_EXPORT( void, vlc_threadvar_delete, (vlc_threadvar_t *) );
-VLC_EXPORT( int,  __vlc_thread_create, ( vlc_object_t *, const char *, int, const char *, void * ( * ) ( vlc_object_t * ), int, bool ) );
+VLC_EXPORT( int, vlc_threadvar_set, (vlc_threadvar_t, void *) );
+VLC_EXPORT( void *, vlc_threadvar_get, (vlc_threadvar_t) );
+VLC_EXPORT( int,  vlc_thread_create, ( vlc_object_t *, const char *, int, const char *, void * ( * ) ( vlc_object_t * ), int ) LIBVLC_USED );
 VLC_EXPORT( int,  __vlc_thread_set_priority, ( vlc_object_t *, const char *, int, int ) );
 VLC_EXPORT( void, __vlc_thread_join,   ( vlc_object_t * ) );
 
-VLC_EXPORT( int, vlc_clone, (vlc_thread_t *, void * (*) (void *), void *, int) );
+VLC_EXPORT( int, vlc_clone, (vlc_thread_t *, void * (*) (void *), void *, int) LIBVLC_USED );
 VLC_EXPORT( void, vlc_cancel, (vlc_thread_t) );
 VLC_EXPORT( void, vlc_join, (vlc_thread_t, void **) );
 VLC_EXPORT (void, vlc_control_cancel, (int cmd, ...));
 
+VLC_EXPORT( int, vlc_timer_create, (vlc_timer_t *, void (*) (vlc_timer_t *, void *), void *) LIBVLC_USED );
+VLC_EXPORT( void, vlc_timer_destroy, (vlc_timer_t *) );
+VLC_EXPORT( void, vlc_timer_schedule, (vlc_timer_t *, bool, mtime_t, mtime_t) );
+VLC_EXPORT( unsigned, vlc_timer_getoverrun, (const vlc_timer_t *) LIBVLC_USED );
+
 #ifndef LIBVLC_USE_PTHREAD_CANCEL
 enum {
-    VLC_SAVE_CANCEL,
-    VLC_RESTORE_CANCEL,
-    VLC_TEST_CANCEL,
     VLC_DO_CANCEL,
     VLC_CLEANUP_PUSH,
     VLC_CLEANUP_POP,
 };
 #endif
 
-VLC_EXPORT(void, vlc_thread_ready, (vlc_object_t *obj));
-#define vlc_thread_ready(o) vlc_thread_ready(VLC_OBJECT(o))
-
-/**
- * Save the cancellation state and disable cancellation for the calling thread.
- * This function must be called before entering a piece of code that is not
- * cancellation-safe.
- * @return Previous cancellation state (opaque value).
- */
-static inline int vlc_savecancel (void)
-{
-    int state;
-#if defined (LIBVLC_USE_PTHREAD_CANCEL)
-    (void) pthread_setcancelstate (PTHREAD_CANCEL_DISABLE, &state);
-#else
-    vlc_control_cancel (VLC_SAVE_CANCEL, &state);
-#endif
-    return state;
-}
-
-/**
- * Restore the cancellation state for the calling thread.
- * @param state previous state as returned by vlc_savecancel().
- * @return Nothing, always succeeds.
- */
-static inline void vlc_restorecancel (int state)
-{
-#if defined (LIBVLC_USE_PTHREAD_CANCEL)
-    (void) pthread_setcancelstate (state, NULL);
-#else
-    vlc_control_cancel (VLC_RESTORE_CANCEL, state);
-#endif
-}
-
-/**
- * Issues an explicit deferred cancellation point.
- * This has no effect if thread cancellation is disabled.
- * This can be called when there is a rather slow non-sleeping operation.
- */
-static inline void vlc_testcancel (void)
-{
-#if defined (LIBVLC_USE_PTHREAD_CANCEL)
-    pthread_testcancel ();
-#else
-    vlc_control_cancel (VLC_TEST_CANCEL);
-#endif
-}
+VLC_EXPORT( int, vlc_savecancel, (void) );
+VLC_EXPORT( void, vlc_restorecancel, (int state) );
+VLC_EXPORT( void, vlc_testcancel, (void) );
 
 #if defined (LIBVLC_USE_PTHREAD_CANCEL)
 /**
@@ -274,51 +258,16 @@ static inline void vlc_cleanup_lock (void *lock)
 }
 #define mutex_cleanup_push( lock ) vlc_cleanup_push (vlc_cleanup_lock, lock)
 
-/*****************************************************************************
- * vlc_threadvar_set: create: set the value of a thread-local variable
- *****************************************************************************/
-static inline int vlc_threadvar_set( vlc_threadvar_t * p_tls, void *p_value )
-{
-    int i_ret;
-
-#if defined(LIBVLC_USE_PTHREAD)
-    i_ret = pthread_setspecific( *p_tls, p_value );
-
-#elif defined( UNDER_CE ) || defined( WIN32 )
-    i_ret = TlsSetValue( *p_tls, p_value ) ? EINVAL : 0;
-
-#endif
-
-    return i_ret;
-}
-
-/*****************************************************************************
- * vlc_threadvar_get: create: get the value of a thread-local variable
- *****************************************************************************/
-static inline void* vlc_threadvar_get( vlc_threadvar_t * p_tls )
-{
-    void *p_ret;
-
-#if defined(LIBVLC_USE_PTHREAD)
-    p_ret = pthread_getspecific( *p_tls );
-
-#elif defined( UNDER_CE ) || defined( WIN32 )
-    p_ret = TlsGetValue( *p_tls );
-
-#endif
-
-    return p_ret;
-}
-
 # if defined (_POSIX_SPIN_LOCKS) && ((_POSIX_SPIN_LOCKS - 0) > 0)
 typedef pthread_spinlock_t vlc_spinlock_t;
 
 /**
  * Initializes a spinlock.
  */
-static inline int vlc_spin_init (vlc_spinlock_t *spin)
+static inline void vlc_spin_init (vlc_spinlock_t *spin)
 {
-    return pthread_spin_init (spin, PTHREAD_PROCESS_PRIVATE);
+    if (pthread_spin_init (spin, PTHREAD_PROCESS_PRIVATE))
+        abort ();
 }
 
 /**
@@ -345,21 +294,17 @@ static inline void vlc_spin_destroy (vlc_spinlock_t *spin)
     pthread_spin_destroy (spin);
 }
 
-#elif defined( WIN32 )
+#elif defined (WIN32) && !defined (UNDER_CE)
 
 typedef CRITICAL_SECTION vlc_spinlock_t;
 
 /**
  * Initializes a spinlock.
  */
-static inline int vlc_spin_init (vlc_spinlock_t *spin)
+static inline void vlc_spin_init (vlc_spinlock_t *spin)
 {
-#ifdef UNDER_CE
-    InitializeCriticalSection(spin);
-    return 0;
-#else
-    return !InitializeCriticalSectionAndSpinCount(spin, 4000);
-#endif
+    if (!InitializeCriticalSectionAndSpinCount(spin, 4000))
+        abort ();
 }
 
 /**
@@ -391,9 +336,9 @@ static inline void vlc_spin_destroy (vlc_spinlock_t *spin)
 /* Fallback to plain mutexes if spinlocks are not available */
 typedef vlc_mutex_t vlc_spinlock_t;
 
-static inline int vlc_spin_init (vlc_spinlock_t *spin)
+static inline void vlc_spin_init (vlc_spinlock_t *spin)
 {
-    return vlc_mutex_init (spin);
+    vlc_mutex_init (spin);
 }
 
 # define vlc_spin_lock    vlc_mutex_lock
@@ -409,7 +354,7 @@ static inline int vlc_spin_init (vlc_spinlock_t *spin)
 #endif
 static inline void barrier (void)
 {
-#if defined (__GNUC__) && \
+#if defined (__GNUC__) && !defined (__APPLE__) && \
             ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1))
     __sync_synchronize ();
 #elif defined(__APPLE__)
@@ -430,8 +375,8 @@ static inline void barrier (void)
 /*****************************************************************************
  * vlc_thread_create: create a thread
  *****************************************************************************/
-#define vlc_thread_create( P_THIS, PSZ_NAME, FUNC, PRIORITY, WAIT )         \
-    __vlc_thread_create( VLC_OBJECT(P_THIS), __FILE__, __LINE__, PSZ_NAME, FUNC, PRIORITY, WAIT )
+#define vlc_thread_create( P_THIS, PSZ_NAME, FUNC, PRIORITY )         \
+    vlc_thread_create( VLC_OBJECT(P_THIS), __FILE__, __LINE__, PSZ_NAME, FUNC, PRIORITY )
 
 /*****************************************************************************
  * vlc_thread_set_priority: set the priority of the calling thread
@@ -445,4 +390,27 @@ static inline void barrier (void)
 #define vlc_thread_join( P_THIS )                                           \
     __vlc_thread_join( VLC_OBJECT(P_THIS) )
 
+#ifdef __cplusplus
+/**
+ * Helper C++ class to lock a mutex.
+ * The mutex is locked when the object is created, and unlocked when the object
+ * is destroyed.
+ */
+class vlc_mutex_locker
+{
+    private:
+        vlc_mutex_t *lock;
+    public:
+        vlc_mutex_locker (vlc_mutex_t *m) : lock (m)
+        {
+            vlc_mutex_lock (lock);
+        }
+
+        ~vlc_mutex_locker (void)
+        {
+            vlc_mutex_unlock (lock);
+        }
+};
+#endif
+
 #endif /* !_VLC_THREADS_H */