gthread.h

windows平台下开发gtk程序所需要的库和头文件等

/* GLIB - Library of useful routines for C programming
 * Copyright (C) 1995-1997  Peter Mattis, Spencer Kimball and Josh MacDonald
 *
 * This library 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 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

/*
 * Modified by the GLib Team and others 1997-2000.  See the AUTHORS
 * file for a list of people on the GLib Team.  See the ChangeLog
 * files for a list of changes.  These files are distributed with
 * GLib at ftp://ftp.gtk.org/pub/gtk/.
 */

#if defined(G_DISABLE_SINGLE_INCLUDES) && !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
#error "Only <glib.h> can be included directly."
#endif

#ifndef __G_THREAD_H__
#define __G_THREAD_H__

#include <glib/gerror.h>
#include <glib/gtypes.h>
#include <glib/gutils.h>        /* for G_INLINE_FUNC */
#include <glib/gatomic.h>       /* for g_atomic_pointer_get */

G_BEGIN_DECLS

/* GLib Thread support
 */

extern GQuark g_thread_error_quark (void);
#define G_THREAD_ERROR g_thread_error_quark ()

typedef enum
{
  G_THREAD_ERROR_AGAIN /* Resource temporarily unavailable */
} GThreadError;

typedef gpointer (*GThreadFunc) (gpointer data);

typedef enum
{
  G_THREAD_PRIORITY_LOW,
  G_THREAD_PRIORITY_NORMAL,
  G_THREAD_PRIORITY_HIGH,
  G_THREAD_PRIORITY_URGENT
} GThreadPriority;

typedef struct _GThread         GThread;
struct  _GThread
{
  /*< private >*/
  GThreadFunc func;
  gpointer data;
  gboolean joinable;
  GThreadPriority priority;
};

typedef struct _GMutex          GMutex;
typedef struct _GCond           GCond;
typedef struct _GPrivate        GPrivate;
typedef struct _GStaticPrivate  GStaticPrivate;

typedef struct _GThreadFunctions GThreadFunctions;
struct _GThreadFunctions
{
  GMutex*  (*mutex_new)           (void);
  void     (*mutex_lock)          (GMutex               *mutex);
  gboolean (*mutex_trylock)       (GMutex               *mutex);
  void     (*mutex_unlock)        (GMutex               *mutex);
  void     (*mutex_free)          (GMutex               *mutex);
  GCond*   (*cond_new)            (void);
  void     (*cond_signal)         (GCond                *cond);
  void     (*cond_broadcast)      (GCond                *cond);
  void     (*cond_wait)           (GCond                *cond,
                                   GMutex               *mutex);
  gboolean (*cond_timed_wait)     (GCond                *cond,
                                   GMutex               *mutex,
                                   GTimeVal             *end_time);
  void      (*cond_free)          (GCond                *cond);
  GPrivate* (*private_new)        (GDestroyNotify        destructor);
  gpointer  (*private_get)        (GPrivate             *private_key);
  void      (*private_set)        (GPrivate             *private_key,
                                   gpointer              data);
  void      (*thread_create)      (GThreadFunc           func,
                                   gpointer              data,
                                   gulong                stack_size,
                                   gboolean              joinable,
                                   gboolean              bound,
                                   GThreadPriority       priority,
                                   gpointer              thread,
                                   GError              **error);
  void      (*thread_yield)       (void);
  void      (*thread_join)        (gpointer              thread);
  void      (*thread_exit)        (void);
  void      (*thread_set_priority)(gpointer              thread,
                                   GThreadPriority       priority);
  void      (*thread_self)        (gpointer              thread);
  gboolean  (*thread_equal)       (gpointer              thread1,
				   gpointer              thread2);
};

GLIB_VAR GThreadFunctions       g_thread_functions_for_glib_use;
GLIB_VAR gboolean               g_thread_use_default_impl;
GLIB_VAR gboolean               g_threads_got_initialized;

GLIB_VAR guint64   (*g_thread_gettime) (void);

/* initializes the mutex/cond/private implementation for glib, might
 * only be called once, and must not be called directly or indirectly
 * from another glib-function, e.g. as a callback.
 */
void    g_thread_init   (GThreadFunctions       *vtable);

/* Errorcheck mutexes. If you define G_ERRORCHECK_MUTEXES, then all
 * mutexes will check for re-locking and re-unlocking */

/* Initialize thread system with errorcheck mutexes. vtable must be
 * NULL. Do not call directly. Use #define G_ERRORCHECK_MUTEXES
 * instead.
 */
void    g_thread_init_with_errorcheck_mutexes (GThreadFunctions* vtable);

/* A random number to recognize debug calls to g_mutex_... */
#define G_MUTEX_DEBUG_MAGIC 0xf8e18ad7

#ifdef G_ERRORCHECK_MUTEXES
#define g_thread_init(vtable) g_thread_init_with_errorcheck_mutexes (vtable)
#endif

/* internal function for fallback static mutex implementation */
GMutex* g_static_mutex_get_mutex_impl   (GMutex **mutex);

#define g_static_mutex_get_mutex_impl_shortcut(mutex) \
  (g_atomic_pointer_get ((gpointer*)(void*)mutex) ? *(mutex) : \
   g_static_mutex_get_mutex_impl (mutex))

/* shorthands for conditional and unconditional function calls */

#define G_THREAD_UF(op, arglist)					\
    (*g_thread_functions_for_glib_use . op) arglist
#define G_THREAD_CF(op, fail, arg)					\
    (g_thread_supported () ? G_THREAD_UF (op, arg) : (fail))
#define G_THREAD_ECF(op, fail, mutex, type)				\
    (g_thread_supported () ? 						\
      ((type(*)(GMutex*, const gulong, gchar const*))			\
      (*g_thread_functions_for_glib_use . op))				\
     (mutex, G_MUTEX_DEBUG_MAGIC, G_STRLOC) : (fail))

#ifndef G_ERRORCHECK_MUTEXES
# define g_mutex_lock(mutex)						\
    G_THREAD_CF (mutex_lock,     (void)0, (mutex))
# define g_mutex_trylock(mutex)						\
    G_THREAD_CF (mutex_trylock,  TRUE,    (mutex))
# define g_mutex_unlock(mutex)						\
    G_THREAD_CF (mutex_unlock,   (void)0, (mutex))
# define g_mutex_free(mutex)						\
    G_THREAD_CF (mutex_free,     (void)0, (mutex))
# define g_cond_wait(cond, mutex)					\
    G_THREAD_CF (cond_wait,      (void)0, (cond, mutex))
# define g_cond_timed_wait(cond, mutex, abs_time)			\
    G_THREAD_CF (cond_timed_wait, TRUE,   (cond, mutex, abs_time))
#else /* G_ERRORCHECK_MUTEXES */
# define g_mutex_lock(mutex)						\
    G_THREAD_ECF (mutex_lock,    (void)0, (mutex), void)
# define g_mutex_trylock(mutex)						\
    G_THREAD_ECF (mutex_trylock, TRUE,    (mutex), gboolean)
# define g_mutex_unlock(mutex)						\
    G_THREAD_ECF (mutex_unlock,  (void)0, (mutex), void)
# define g_mutex_free(mutex)						\
    G_THREAD_ECF (mutex_free,    (void)0, (mutex), void)
# define g_cond_wait(cond, mutex)					\
    (g_thread_supported () ? ((void(*)(GCond*, GMutex*, gulong, gchar*))\
      g_thread_functions_for_glib_use.cond_wait)			\
        (cond, mutex, G_MUTEX_DEBUG_MAGIC, G_STRLOC) : (void) 0)
# define g_cond_timed_wait(cond, mutex, abs_time)			\
    (g_thread_supported () ?						\
      ((gboolean(*)(GCond*, GMutex*, GTimeVal*, gulong, gchar*))	\
        g_thread_functions_for_glib_use.cond_timed_wait)		\
          (cond, mutex, abs_time, G_MUTEX_DEBUG_MAGIC, G_STRLOC) : TRUE)
#endif /* G_ERRORCHECK_MUTEXES */

#define g_thread_supported()    (g_threads_got_initialized)
#define g_mutex_new()            G_THREAD_UF (mutex_new,      ())
#define g_cond_new()             G_THREAD_UF (cond_new,       ())
#define g_cond_signal(cond)      G_THREAD_CF (cond_signal,    (void)0, (cond))
#define g_cond_broadcast(cond)   G_THREAD_CF (cond_broadcast, (void)0, (cond))