X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=include%2Fvlc_threads.h;h=d3f021bb40b1a1bda32fa79aabc3066139f161f2;hb=refs%2Fheads%2Fmaster;hp=8cf3d37a5fab07ff262575bfe8afb26fc61df2e7;hpb=e2c1b16917c657b054a19c0a14255d3daffd6e8d;p=vlc diff --git a/include/vlc_threads.h b/include/vlc_threads.h index 8cf3d37a5f..d3f021bb40 100644 --- a/include/vlc_threads.h +++ b/include/vlc_threads.h @@ -2,7 +2,7 @@ * 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 @@ -10,19 +10,19 @@ * Gildas Bazin * Christophe Massiot * - * 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_ @@ -34,171 +34,301 @@ * */ -#if defined( UNDER_CE ) -# include /* WinCE API */ -#elif defined( WIN32 ) -# include /* Win32 API */ -# include - -#else /* pthreads (like Linux & BSD) */ -# define LIBVLC_USE_PTHREAD 1 -# define LIBVLC_USE_PTHREAD_CANCEL 1 -# define _APPLE_C_SOURCE 1 /* Proper pthread semantics on OSX */ - -# include /* lldiv_t definition (only in C99) */ -# include /* _POSIX_SPIN_LOCKS */ -# include - /* Needed for pthread_cond_timedwait */ -# include -# include - -#endif - -/***************************************************************************** - * Constants - *****************************************************************************/ - -/* Thread priorities */ -#ifdef __APPLE__ -# define VLC_THREAD_PRIORITY_LOW 0 -# define VLC_THREAD_PRIORITY_INPUT 22 -# define VLC_THREAD_PRIORITY_AUDIO 22 -# define VLC_THREAD_PRIORITY_VIDEO 0 -# define VLC_THREAD_PRIORITY_OUTPUT 22 -# define VLC_THREAD_PRIORITY_HIGHEST 22 - -#elif defined(LIBVLC_USE_PTHREAD) -# define VLC_THREAD_PRIORITY_LOW 0 -# define VLC_THREAD_PRIORITY_INPUT 10 -# define VLC_THREAD_PRIORITY_AUDIO 5 -# define VLC_THREAD_PRIORITY_VIDEO 0 -# define VLC_THREAD_PRIORITY_OUTPUT 15 -# define VLC_THREAD_PRIORITY_HIGHEST 20 - -#elif defined(WIN32) || defined(UNDER_CE) -/* Define different priorities for WinNT/2K/XP and Win9x/Me */ -# define VLC_THREAD_PRIORITY_LOW 0 -# define VLC_THREAD_PRIORITY_INPUT \ - THREAD_PRIORITY_ABOVE_NORMAL -# define VLC_THREAD_PRIORITY_AUDIO \ - THREAD_PRIORITY_HIGHEST -# define VLC_THREAD_PRIORITY_VIDEO 0 -# define VLC_THREAD_PRIORITY_OUTPUT \ - THREAD_PRIORITY_ABOVE_NORMAL -# define VLC_THREAD_PRIORITY_HIGHEST \ - THREAD_PRIORITY_TIME_CRITICAL +#if defined (_WIN32) +# include +# ifndef ETIMEDOUT +# define ETIMEDOUT 10060 /* This is the value in winsock.h. */ +# endif -#else -# define VLC_THREAD_PRIORITY_LOW 0 -# define VLC_THREAD_PRIORITY_INPUT 0 -# define VLC_THREAD_PRIORITY_AUDIO 0 -# define VLC_THREAD_PRIORITY_VIDEO 0 -# define VLC_THREAD_PRIORITY_OUTPUT 0 -# define VLC_THREAD_PRIORITY_HIGHEST 0 +typedef struct vlc_thread *vlc_thread_t; +typedef struct +{ + bool dynamic; + union + { + struct + { + bool locked; + unsigned long contention; + }; + CRITICAL_SECTION mutex; + }; +} vlc_mutex_t; +#define VLC_STATIC_MUTEX { false, { { false, 0 } } } +typedef struct +{ + HANDLE handle; + unsigned clock; +} vlc_cond_t; +#define VLC_STATIC_COND { 0, 0 } +typedef HANDLE vlc_sem_t; +#define LIBVLC_NEED_RWLOCK +typedef struct vlc_threadvar *vlc_threadvar_t; +typedef struct vlc_timer *vlc_timer_t; + +# define VLC_THREAD_PRIORITY_LOW 0 +# define VLC_THREAD_PRIORITY_INPUT THREAD_PRIORITY_ABOVE_NORMAL +# define VLC_THREAD_PRIORITY_AUDIO THREAD_PRIORITY_HIGHEST +# define VLC_THREAD_PRIORITY_VIDEO 0 +# define VLC_THREAD_PRIORITY_OUTPUT THREAD_PRIORITY_ABOVE_NORMAL +# define VLC_THREAD_PRIORITY_HIGHEST THREAD_PRIORITY_TIME_CRITICAL + +#elif defined (__OS2__) +# include + +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 } +#define LIBVLC_NEED_SEMAPHORE +#define LIBVLC_NEED_RWLOCK +typedef struct vlc_threadvar *vlc_threadvar_t; +typedef struct vlc_timer *vlc_timer_t; + +# 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) + +# define pthread_sigmask sigprocmask + +#elif defined (__ANDROID__) /* pthreads subset without pthread_cancel() */ +# include +# include +# include +# define LIBVLC_USE_PTHREAD_CLEANUP 1 +# define LIBVLC_NEED_SEMAPHORE +# define LIBVLC_NEED_RWLOCK + +typedef struct vlc_thread *vlc_thread_t; +typedef pthread_mutex_t vlc_mutex_t; +#define VLC_STATIC_MUTEX PTHREAD_MUTEX_INITIALIZER +typedef struct +{ + pthread_cond_t cond; + unsigned clock; +} vlc_cond_t; +#define VLC_STATIC_COND { PTHREAD_COND_INITIALIZER, CLOCK_REALTIME } -#endif +typedef pthread_key_t vlc_threadvar_t; +typedef struct vlc_timer *vlc_timer_t; + +# define VLC_THREAD_PRIORITY_LOW 0 +# define VLC_THREAD_PRIORITY_INPUT 0 +# define VLC_THREAD_PRIORITY_AUDIO 0 +# define VLC_THREAD_PRIORITY_VIDEO 0 +# define VLC_THREAD_PRIORITY_OUTPUT 0 +# define VLC_THREAD_PRIORITY_HIGHEST 0 + +#elif defined (__APPLE__) +# define _APPLE_C_SOURCE 1 /* Proper pthread semantics on OSX */ +# include +# include +/* Unnamed POSIX semaphores not supported on Mac OS X */ +# include +# include +# define LIBVLC_USE_PTHREAD 1 +# define LIBVLC_USE_PTHREAD_CLEANUP 1 +# define LIBVLC_USE_PTHREAD_CANCEL 1 -/***************************************************************************** - * Type definitions - *****************************************************************************/ +typedef pthread_t vlc_thread_t; +typedef pthread_mutex_t vlc_mutex_t; +#define VLC_STATIC_MUTEX PTHREAD_MUTEX_INITIALIZER +typedef struct +{ + pthread_cond_t cond; + unsigned clock; +} vlc_cond_t; +#define VLC_STATIC_COND { PTHREAD_COND_INITIALIZER, 0 } +typedef semaphore_t vlc_sem_t; +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; + +# define VLC_THREAD_PRIORITY_LOW 0 +# define VLC_THREAD_PRIORITY_INPUT 22 +# define VLC_THREAD_PRIORITY_AUDIO 22 +# define VLC_THREAD_PRIORITY_VIDEO 0 +# define VLC_THREAD_PRIORITY_OUTPUT 22 +# define VLC_THREAD_PRIORITY_HIGHEST 22 + +#else /* POSIX threads */ +# include /* _POSIX_SPIN_LOCKS */ +# include +# include +# define LIBVLC_USE_PTHREAD 1 +# define LIBVLC_USE_PTHREAD_CLEANUP 1 +# define LIBVLC_USE_PTHREAD_CANCEL 1 -#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; +#define VLC_STATIC_COND PTHREAD_COND_INITIALIZER +typedef sem_t vlc_sem_t; +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_t vlc_timer_t; -struct vlc_timer_t -{ - timer_t handle; - void (*func) (vlc_timer_t *, void *); - void *data; -}; +typedef struct vlc_timer *vlc_timer_t; -#elif defined( WIN32 ) -typedef struct -{ - HANDLE handle; - void *(*entry) (void *); - void *data; -#if defined( UNDER_CE ) - HANDLE cancel_event; -#endif -} *vlc_thread_t; +# define VLC_THREAD_PRIORITY_LOW 0 +# define VLC_THREAD_PRIORITY_INPUT 10 +# define VLC_THREAD_PRIORITY_AUDIO 5 +# define VLC_THREAD_PRIORITY_VIDEO 0 +# define VLC_THREAD_PRIORITY_OUTPUT 15 +# define VLC_THREAD_PRIORITY_HIGHEST 20 -typedef struct -{ - LONG initialized; - CRITICAL_SECTION mutex; -} vlc_mutex_t; -#define VLC_STATIC_MUTEX { 0, } +#endif -typedef HANDLE vlc_cond_t; -typedef DWORD vlc_threadvar_t; -typedef struct vlc_timer_t vlc_timer_t; -struct vlc_timer_t +#ifdef LIBVLC_NEED_SEMAPHORE +typedef struct vlc_sem { - HANDLE handle; - void (*func) (vlc_timer_t *, void *); - void *data; - unsigned overrun; - CRITICAL_SECTION serializer; - LONG volatile counter; -}; - + vlc_mutex_t lock; + vlc_cond_t wait; + unsigned value; +} vlc_sem_t; #endif -#if defined( WIN32 ) && !defined ETIMEDOUT -# define ETIMEDOUT 10060 /* This is the value in winsock.h. */ +#ifdef LIBVLC_NEED_RWLOCK +typedef struct vlc_rwlock +{ + vlc_mutex_t mutex; + vlc_cond_t wait; + long state; +} vlc_rwlock_t; +# define VLC_STATIC_RWLOCK { VLC_STATIC_MUTEX, VLC_STATIC_COND, 0 } #endif /***************************************************************************** * Function definitions *****************************************************************************/ -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( 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 *) ); -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_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) 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 ); +VLC_API void vlc_mutex_init( vlc_mutex_t * ); +VLC_API void vlc_mutex_init_recursive( vlc_mutex_t * ); +VLC_API void vlc_mutex_destroy( vlc_mutex_t * ); +VLC_API void vlc_mutex_lock( vlc_mutex_t * ); +VLC_API int vlc_mutex_trylock( vlc_mutex_t * ) VLC_USED; +VLC_API void vlc_mutex_unlock( vlc_mutex_t * ); +VLC_API void vlc_cond_init( vlc_cond_t * ); +VLC_API void vlc_cond_init_daytime( vlc_cond_t * ); +VLC_API void vlc_cond_destroy( vlc_cond_t * ); +VLC_API void vlc_cond_signal(vlc_cond_t *); +VLC_API void vlc_cond_broadcast(vlc_cond_t *); +VLC_API void vlc_cond_wait(vlc_cond_t *, vlc_mutex_t *); +VLC_API int vlc_cond_timedwait(vlc_cond_t *, vlc_mutex_t *, mtime_t); +VLC_API void vlc_sem_init(vlc_sem_t *, unsigned); +VLC_API void vlc_sem_destroy(vlc_sem_t *); +VLC_API int vlc_sem_post(vlc_sem_t *); +VLC_API void vlc_sem_wait(vlc_sem_t *); + +VLC_API void vlc_rwlock_init(vlc_rwlock_t *); +VLC_API void vlc_rwlock_destroy(vlc_rwlock_t *); +VLC_API void vlc_rwlock_rdlock(vlc_rwlock_t *); +VLC_API void vlc_rwlock_wrlock(vlc_rwlock_t *); +VLC_API void vlc_rwlock_unlock(vlc_rwlock_t *); +VLC_API int vlc_threadvar_create(vlc_threadvar_t * , void (*) (void *) ); +VLC_API void vlc_threadvar_delete(vlc_threadvar_t *); +VLC_API int vlc_threadvar_set(vlc_threadvar_t, void *); +VLC_API void * vlc_threadvar_get(vlc_threadvar_t); + +VLC_API int vlc_clone(vlc_thread_t *, void * (*) (void *), void *, int) VLC_USED; +VLC_API void vlc_cancel(vlc_thread_t); +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 + */ -#ifndef LIBVLC_USE_PTHREAD_CANCEL -enum { - VLC_DO_CANCEL, - VLC_CLEANUP_PUSH, - VLC_CLEANUP_POP, -}; +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 -VLC_EXPORT( int, vlc_savecancel, (void) ); -VLC_EXPORT( void, vlc_restorecancel, (int state) ); -VLC_EXPORT( void, vlc_testcancel, (void) ); +#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; -#if defined (LIBVLC_USE_PTHREAD_CANCEL) +VLC_API unsigned vlc_GetCPUCount(void); + +VLC_API int vlc_savecancel(void); +VLC_API void vlc_restorecancel(int state); +VLC_API void vlc_testcancel(void); + +#if defined (LIBVLC_USE_PTHREAD_CLEANUP) /** * Registers a new procedure to run if the thread is cancelled (or otherwise * exits prematurely). Any call to vlc_cleanup_push() must paired with a @@ -223,7 +353,13 @@ VLC_EXPORT( void, vlc_testcancel, (void) ); * vlc_cleanup_push(), and executes it. */ # define vlc_cleanup_run( ) pthread_cleanup_pop (1) + #else +enum +{ + VLC_CLEANUP_PUSH, + VLC_CLEANUP_POP, +}; typedef struct vlc_cleanup_t vlc_cleanup_t; struct vlc_cleanup_t @@ -234,7 +370,7 @@ struct vlc_cleanup_t }; /* This macros opens a code block on purpose. This is needed for multiple - * calls within a single function. This also prevent Win32 developpers from + * calls within a single function. This also prevent Win32 developers from * writing code that would break on POSIX (POSIX opens a block as well). */ # define vlc_cleanup_push( routine, arg ) \ do { \ @@ -250,145 +386,58 @@ struct vlc_cleanup_t vlc_cleanup_data.proc (vlc_cleanup_data.data); \ } while (0) -#endif /* LIBVLC_USE_PTHREAD_CANCEL */ +#endif /* !LIBVLC_USE_PTHREAD_CLEANUP */ -static inline void vlc_cleanup_lock (void *lock) +#ifndef LIBVLC_USE_PTHREAD_CANCEL +/* poll() with cancellation */ +# ifdef __OS2__ +static inline int vlc_poll (struct pollfd *fds, unsigned nfds, int timeout) { - vlc_mutex_unlock ((vlc_mutex_t *)lock); -} -#define mutex_cleanup_push( lock ) vlc_cleanup_push (vlc_cleanup_lock, lock) + static int (*vlc_poll_os2)(struct pollfd *, unsigned, int) = NULL; -# if defined (_POSIX_SPIN_LOCKS) && ((_POSIX_SPIN_LOCKS - 0) > 0) -typedef pthread_spinlock_t vlc_spinlock_t; + if (!vlc_poll_os2) + { + HMODULE hmod; + CHAR szFailed[CCHMAXPATH]; -/** - * Initializes a spinlock. - */ -static inline void vlc_spin_init (vlc_spinlock_t *spin) -{ - if (pthread_spin_init (spin, PTHREAD_PROCESS_PRIVATE)) - abort (); -} + if (DosLoadModule(szFailed, sizeof(szFailed), "vlccore", &hmod)) + return -1; -/** - * Acquires a spinlock. - */ -static inline void vlc_spin_lock (vlc_spinlock_t *spin) -{ - pthread_spin_lock (spin); -} + if (DosQueryProcAddr(hmod, 0, "_vlc_poll_os2", (PFN *)&vlc_poll_os2)) + return -1; + } -/** - * Releases a spinlock. - */ -static inline void vlc_spin_unlock (vlc_spinlock_t *spin) -{ - pthread_spin_unlock (spin); + return (*vlc_poll_os2)(fds, nfds, timeout); } - -/** - * Deinitializes a spinlock. - */ -static inline void vlc_spin_destroy (vlc_spinlock_t *spin) +# else +static inline int vlc_poll (struct pollfd *fds, unsigned nfds, int timeout) { - pthread_spin_destroy (spin); -} - -#elif defined (WIN32) && !defined (UNDER_CE) + int val; -typedef CRITICAL_SECTION vlc_spinlock_t; - -/** - * Initializes a spinlock. - */ -static inline void vlc_spin_init (vlc_spinlock_t *spin) -{ - if (!InitializeCriticalSectionAndSpinCount(spin, 4000)) - abort (); -} - -/** - * Acquires a spinlock. - */ -static inline void vlc_spin_lock (vlc_spinlock_t *spin) -{ - EnterCriticalSection(spin); -} + do + { + int ugly_timeout = ((unsigned)timeout >= 50) ? 50 : timeout; + if (timeout >= 0) + timeout -= ugly_timeout; -/** - * Releases a spinlock. - */ -static inline void vlc_spin_unlock (vlc_spinlock_t *spin) -{ - LeaveCriticalSection(spin); -} + vlc_testcancel (); + val = poll (fds, nfds, ugly_timeout); + } + while (val == 0 && timeout != 0); -/** - * Deinitializes a spinlock. - */ -static inline void vlc_spin_destroy (vlc_spinlock_t *spin) -{ - DeleteCriticalSection(spin); + return val; } +# endif -#else - -/* Fallback to plain mutexes if spinlocks are not available */ -typedef vlc_mutex_t vlc_spinlock_t; +# define poll(u,n,t) vlc_poll(u, n, t) -static inline void vlc_spin_init (vlc_spinlock_t *spin) -{ - vlc_mutex_init (spin); -} - -# define vlc_spin_lock vlc_mutex_lock -# define vlc_spin_unlock vlc_mutex_unlock -# define vlc_spin_destroy vlc_mutex_destroy -#endif +#endif /* LIBVLC_USE_PTHREAD_CANCEL */ -/** - * Issues a full memory barrier. - */ -#if defined (__APPLE__) -# include /* OSMemoryBarrier() */ -#endif -static inline void barrier (void) +static inline void vlc_cleanup_lock (void *lock) { -#if defined (__GNUC__) && !defined (__APPLE__) && \ - ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1)) - __sync_synchronize (); -#elif defined(__APPLE__) - OSMemoryBarrier (); -#elif defined(__powerpc__) - asm volatile ("sync":::"memory"); -#elif 0 // defined(__i386__) /* Requires SSE2 support */ - asm volatile ("mfence":::"memory"); -#else - vlc_spinlock_t spin; - vlc_spin_init (&spin); - vlc_spin_lock (&spin); - vlc_spin_unlock (&spin); - vlc_spin_destroy (&spin); -#endif + vlc_mutex_unlock ((vlc_mutex_t *)lock); } - -/***************************************************************************** - * vlc_thread_create: create a thread - *****************************************************************************/ -#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 - *****************************************************************************/ -#define vlc_thread_set_priority( P_THIS, PRIORITY ) \ - __vlc_thread_set_priority( VLC_OBJECT(P_THIS), __FILE__, __LINE__, PRIORITY ) - -/***************************************************************************** - * vlc_thread_join: wait until a thread exits - *****************************************************************************/ -#define vlc_thread_join( P_THIS ) \ - __vlc_thread_join( VLC_OBJECT(P_THIS) ) +#define mutex_cleanup_push( lock ) vlc_cleanup_push (vlc_cleanup_lock, lock) #ifdef __cplusplus /** @@ -413,4 +462,20 @@ class vlc_mutex_locker }; #endif +enum +{ + 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 +}; + +VLC_API void vlc_global_mutex( unsigned, bool ); +#define vlc_global_lock( n ) vlc_global_mutex( n, true ) +#define vlc_global_unlock( n ) vlc_global_mutex( n, false ) + #endif /* !_VLC_THREADS_H */