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vlc-2-2
Commit e286442d authored by Rémi Denis-Courmont's avatar Rémi Denis-Courmont
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vlc_threads.h: gather per-platform support

parent f929e866
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Showing with 119 additions and 158 deletions
include/vlc_threads.h
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......@@ -34,127 +34,13 @@
*
*/
#if defined( WIN32 )
# include <process.h> /* Win32 API */
#elif defined( __OS2__ ) /* OS/2 API */
# include <errno.h>
# define pthread_sigmask sigprocmask
#elif defined( __ANDROID__ ) /* pthreads subset without pthread_cancel() */
# define LIBVLC_NEED_SEMAPHORE
# define LIBVLC_NEED_RWLOCK
# include <unistd.h> /* _POSIX_SPIN_LOCKS */
# include <pthread.h>
# include <poll.h>
#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 <unistd.h> /* _POSIX_SPIN_LOCKS */
# include <pthread.h>
/* Unnamed POSIX semaphores not supported on Mac OS X, use Mach semaphores instead */
# if defined (__APPLE__)
# include <mach/semaphore.h>
# include <mach/task.h>
# else
# include <semaphore.h>
#if defined (WIN32)
# include <process.h>
# ifndef ETIMEDOUT
# define ETIMEDOUT 10060 /* This is the value in winsock.h. */
# endif
#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) || defined(__ANDROID__)
# 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)
/* 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
#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
# define VLC_THREAD_PRIORITY_AUDIO 0
# define VLC_THREAD_PRIORITY_VIDEO 0
# define VLC_THREAD_PRIORITY_OUTPUT 0
# define VLC_THREAD_PRIORITY_HIGHEST 0
#endif
/*****************************************************************************
* Type definitions
*****************************************************************************/
#if defined (__ANDROID__)
typedef struct vlc_thread *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 pthread_key_t vlc_threadvar_t;
typedef struct vlc_timer *vlc_timer_t;
#elif 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 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;
#if defined (__APPLE__)
typedef semaphore_t vlc_sem_t;
#else
typedef sem_t vlc_sem_t;
#endif
#elif defined( WIN32 )
typedef struct vlc_thread *vlc_thread_t;
typedef struct
{
bool dynamic;
......@@ -169,22 +55,28 @@ typedef struct
};
} 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;
#elif defined( __OS2__ )
typedef struct vlc_thread *vlc_thread_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 <errno.h>
typedef struct vlc_thread *vlc_thread_t;
typedef struct
{
bool dynamic;
......@@ -199,19 +91,108 @@ typedef struct
};
} 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 <unistd.h>
# include <pthread.h>
# include <poll.h>
# 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 pthread_cond_t vlc_cond_t;
#define VLC_STATIC_COND PTHREAD_COND_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 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 <unistd.h>
# include <pthread.h>
/* Unnamed POSIX semaphores not supported on Mac OS X */
# include <mach/semaphore.h>
# include <mach/task.h>
# include <libkern/OSAtomic.h> /* OSMemoryBarrier() */
# define LIBVLC_USE_PTHREAD 1
# define LIBVLC_USE_PTHREAD_CLEANUP 1
# define LIBVLC_USE_PTHREAD_CANCEL 1
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 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 <unistd.h> /* _POSIX_SPIN_LOCKS */
# include <pthread.h>
# include <semaphore.h>
# define LIBVLC_USE_PTHREAD 1
# define LIBVLC_USE_PTHREAD_CLEANUP 1
# define LIBVLC_USE_PTHREAD_CANCEL 1
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 *vlc_timer_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
#endif
#ifdef LIBVLC_NEED_SEMAPHORE
......@@ -233,10 +214,6 @@ typedef struct vlc_rwlock
# define VLC_STATIC_RWLOCK { VLC_STATIC_MUTEX, VLC_STATIC_COND, 0 }
#endif
#if defined( WIN32 ) && !defined ETIMEDOUT
# define ETIMEDOUT 10060 /* This is the value in winsock.h. */
#endif
/*****************************************************************************
* Function definitions
*****************************************************************************/
......@@ -340,18 +317,11 @@ 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_POP,
};
#endif
VLC_API int vlc_savecancel(void);
VLC_API void vlc_restorecancel(int state);
VLC_API void vlc_testcancel(void);
#if defined (LIBVLC_USE_PTHREAD_CANCEL) || defined(__ANDROID__)
#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() <b>must</b> paired with a
......@@ -376,7 +346,13 @@ VLC_API 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
......@@ -402,9 +378,10 @@ struct vlc_cleanup_t
vlc_control_cancel (VLC_CLEANUP_POP); \
vlc_cleanup_data.proc (vlc_cleanup_data.data); \
} while (0)
#endif /* LIBVLC_USE_PTHREAD_CANCEL || __ANDROID__ */
#if !defined (LIBVLC_USE_PTHREAD_CANCEL)
#endif /* !LIBVLC_USE_PTHREAD_CLEANUO */
#ifndef LIBVLC_USE_PTHREAD_CANCEL
/* poll() with cancellation */
static inline int vlc_poll (struct pollfd *fds, unsigned nfds, int timeout)
{
......@@ -431,7 +408,7 @@ static inline void vlc_cleanup_lock (void *lock)
}
#define mutex_cleanup_push( lock ) vlc_cleanup_push (vlc_cleanup_lock, lock)
# if defined (_POSIX_SPIN_LOCKS) && ((_POSIX_SPIN_LOCKS - 0) > 0)
#if defined (_POSIX_SPIN_LOCKS) && ((_POSIX_SPIN_LOCKS - 0) > 0)
typedef pthread_spinlock_t vlc_spinlock_t;
/**
......@@ -468,44 +445,30 @@ static inline void vlc_spin_destroy (vlc_spinlock_t *spin)
}
#elif defined (WIN32)
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);
}
/**
* Releases a spinlock.
*/
static inline void vlc_spin_unlock (vlc_spinlock_t *spin)
{
LeaveCriticalSection(spin);
}
/**
* Deinitializes a spinlock.
*/
static inline void vlc_spin_destroy (vlc_spinlock_t *spin)
{
DeleteCriticalSection(spin);
}
#else
/* Fallback to plain mutexes if spinlocks are not available */
typedef vlc_mutex_t vlc_spinlock_t;
......@@ -522,9 +485,6 @@ static inline void vlc_spin_init (vlc_spinlock_t *spin)
/**
* Issues a full memory barrier.
*/
#if defined (__APPLE__)
# include <libkern/OSAtomic.h> /* OSMemoryBarrier() */
#endif
static inline void barrier (void)
{
#if defined (__GNUC__) && !defined (__APPLE__) && \
......@@ -568,7 +528,8 @@ class vlc_mutex_locker
};
#endif
enum {
enum
{
VLC_AVCODEC_MUTEX = 0,
VLC_GCRYPT_MUTEX,
VLC_XLIB_MUTEX,
......
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