* vlc_threads.h : threads implementation for the VideoLAN client
* This header provides portable declarations for mutexes & conditions
*****************************************************************************
- * Copyright (C) 1999, 2002 the VideoLAN team
+ * Copyright (C) 1999, 2002 VLC authors and VideoLAN
* Copyright © 2007-2008 Rémi Denis-Courmont
*
* Authors: Jean-Marc Dressler <polux@via.ecp.fr>
* Gildas Bazin <gbazin@netcourrier.com>
* Christophe Massiot <massiot@via.ecp.fr>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
*
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#ifndef VLC_THREADS_H_
*
*/
-#if defined( UNDER_CE )
-#elif defined( WIN32 )
+#if defined( WIN32 )
# include <process.h> /* Win32 API */
+#elif defined( __OS2__ ) /* OS/2 API */
+# include <errno.h>
+
+# define pthread_sigmask sigprocmask
+
#else /* pthreads (like Linux & BSD) */
# define LIBVLC_USE_PTHREAD 1
# define LIBVLC_USE_PTHREAD_CANCEL 1
# define VLC_THREAD_PRIORITY_OUTPUT 15
# define VLC_THREAD_PRIORITY_HIGHEST 20
-#elif defined(WIN32) || defined(UNDER_CE)
+#elif defined(WIN32)
/* Define different priorities for WinNT/2K/XP and Win9x/Me */
# define VLC_THREAD_PRIORITY_LOW 0
# define VLC_THREAD_PRIORITY_INPUT \
# define VLC_THREAD_PRIORITY_HIGHEST \
THREAD_PRIORITY_TIME_CRITICAL
+#elif defined(__OS2__)
+# define VLC_THREAD_PRIORITY_LOW 0
+# define VLC_THREAD_PRIORITY_INPUT MAKESHORT( PRTYD_MAXIMUM / 2, PRTYC_REGULAR )
+# define VLC_THREAD_PRIORITY_AUDIO MAKESHORT( PRTYD_MAXIMUM, PRTYC_REGULAR )
+# define VLC_THREAD_PRIORITY_VIDEO 0
+# define VLC_THREAD_PRIORITY_OUTPUT MAKESHORT( PRTYD_MAXIMUM / 2, PRTYC_REGULAR )
+# define VLC_THREAD_PRIORITY_HIGHEST MAKESHORT( 0, PRTYC_TIMECRITICAL )
+
#else
# define VLC_THREAD_PRIORITY_LOW 0
# define VLC_THREAD_PRIORITY_INPUT 0
typedef pthread_cond_t vlc_cond_t;
#define VLC_STATIC_COND PTHREAD_COND_INITIALIZER
typedef pthread_rwlock_t vlc_rwlock_t;
+#define VLC_STATIC_RWLOCK PTHREAD_RWLOCK_INITIALIZER
typedef pthread_key_t vlc_threadvar_t;
typedef struct vlc_timer *vlc_timer_t;
HANDLE handle;
unsigned clock;
} vlc_cond_t;
+#define VLC_STATIC_COND { 0, 0 }
typedef HANDLE vlc_sem_t;
typedef struct
{
vlc_mutex_t mutex;
- vlc_cond_t read_wait;
- vlc_cond_t write_wait;
+ vlc_cond_t wait;
unsigned long readers;
- unsigned long writers;
DWORD writer;
} vlc_rwlock_t;
+#define VLC_STATIC_RWLOCK \
+ { VLC_STATIC_MUTEX, VLC_STATIC_COND, 0, 0 }
+
+typedef struct vlc_threadvar *vlc_threadvar_t;
+typedef struct vlc_timer *vlc_timer_t;
+
+#elif defined( __OS2__ )
+typedef struct vlc_thread *vlc_thread_t;
+
+typedef struct
+{
+ bool dynamic;
+ union
+ {
+ struct
+ {
+ bool locked;
+ unsigned long contention;
+ };
+ HMTX hmtx;
+ };
+} vlc_mutex_t;
+
+#define VLC_STATIC_MUTEX { false, { { false, 0 } } }
+
+typedef struct
+{
+ HEV hev;
+ unsigned clock;
+} vlc_cond_t;
+
+#define VLC_STATIC_COND { 0, 0 }
+
+typedef struct
+{
+ HEV hev;
+ HMTX wait_mutex;
+ HMTX count_mutex;
+ int count;
+} vlc_sem_t;
+
+typedef struct
+{
+ vlc_mutex_t mutex;
+ vlc_cond_t wait;
+ unsigned long readers;
+ int writer;
+} vlc_rwlock_t;
+#define VLC_STATIC_RWLOCK \
+ { VLC_STATIC_MUTEX, VLC_STATIC_COND, 0, 0 }
typedef struct vlc_threadvar *vlc_threadvar_t;
typedef struct vlc_timer *vlc_timer_t;
+
#endif
#if defined( WIN32 ) && !defined ETIMEDOUT
VLC_API void vlc_join(vlc_thread_t, void **);
VLC_API void vlc_control_cancel (int cmd, ...);
+VLC_API mtime_t mdate(void);
+VLC_API void mwait(mtime_t deadline);
+VLC_API void msleep(mtime_t delay);
+
+#define VLC_HARD_MIN_SLEEP 10000 /* 10 milliseconds = 1 tick at 100Hz */
+#define VLC_SOFT_MIN_SLEEP 9000000 /* 9 seconds */
+
+#if VLC_GCC_VERSION(4,3)
+/* Linux has 100, 250, 300 or 1000Hz
+ *
+ * HZ=100 by default on FreeBSD, but some architectures use a 1000Hz timer
+ */
+
+static
+__attribute__((unused))
+__attribute__((noinline))
+__attribute__((error("sorry, cannot sleep for such short a time")))
+mtime_t impossible_delay( mtime_t delay )
+{
+ (void) delay;
+ return VLC_HARD_MIN_SLEEP;
+}
+
+static
+__attribute__((unused))
+__attribute__((noinline))
+__attribute__((warning("use proper event handling instead of short delay")))
+mtime_t harmful_delay( mtime_t delay )
+{
+ return delay;
+}
+
+# define check_delay( d ) \
+ ((__builtin_constant_p(d < VLC_HARD_MIN_SLEEP) \
+ && (d < VLC_HARD_MIN_SLEEP)) \
+ ? impossible_delay(d) \
+ : ((__builtin_constant_p(d < VLC_SOFT_MIN_SLEEP) \
+ && (d < VLC_SOFT_MIN_SLEEP)) \
+ ? harmful_delay(d) \
+ : d))
+
+static
+__attribute__((unused))
+__attribute__((noinline))
+__attribute__((error("deadlines can not be constant")))
+mtime_t impossible_deadline( mtime_t deadline )
+{
+ return deadline;
+}
+
+# define check_deadline( d ) \
+ (__builtin_constant_p(d) ? impossible_deadline(d) : d)
+#else
+# define check_delay(d) (d)
+# define check_deadline(d) (d)
+#endif
+
+#define msleep(d) msleep(check_delay(d))
+#define mwait(d) mwait(check_deadline(d))
+
VLC_API int vlc_timer_create(vlc_timer_t *, void (*) (void *), void *) VLC_USED;
VLC_API void vlc_timer_destroy(vlc_timer_t);
VLC_API void vlc_timer_schedule(vlc_timer_t, bool, mtime_t, mtime_t);
VLC_API unsigned vlc_timer_getoverrun(vlc_timer_t) VLC_USED;
+VLC_API unsigned vlc_GetCPUCount(void);
+
#ifndef LIBVLC_USE_PTHREAD_CANCEL
enum {
VLC_CLEANUP_PUSH,
vlc_cleanup_data.proc (vlc_cleanup_data.data); \
} while (0)
+/* poll() with cancellation */
+static inline int vlc_poll (struct pollfd *fds, unsigned nfds, int timeout)
+{
+ vlc_testcancel ();
+
+ while (timeout > 50)
+ {
+ int val = poll (fds, nfds, timeout);
+ if (val != 0)
+ return val;
+ timeout -= 50;
+ vlc_testcancel ();
+ }
+
+ return poll (fds, nfds, timeout);
+}
+# define poll(u,n,t) vlc_poll(u, n, t)
+
#endif /* LIBVLC_USE_PTHREAD_CANCEL */
static inline void vlc_cleanup_lock (void *lock)
pthread_spin_destroy (spin);
}
-#elif defined (WIN32) && !defined (UNDER_CE)
+#elif defined (WIN32)
typedef CRITICAL_SECTION vlc_spinlock_t;
VLC_AVCODEC_MUTEX = 0,
VLC_GCRYPT_MUTEX,
VLC_XLIB_MUTEX,
+ VLC_MOSAIC_MUTEX,
+ VLC_HIGHLIGHT_MUTEX,
+ VLC_ATOMIC_MUTEX,
/* Insert new entry HERE */
VLC_MAX_MUTEX
};
projects / vlc / blobdiff