* 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/.
+ * 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 <gerror.h>
-#include <gmain.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
-#ifndef GLIB_VAR
-# ifdef G_OS_WIN32
-# ifdef GLIB_COMPILATION
-# define GLIB_VAR __declspec(dllexport)
-# else /* !GLIB_COMPILATION */
-# define GLIB_VAR extern __declspec(dllimport)
-# endif /* !GLIB_COMPILATION */
-# else /* !G_OS_WIN32 */
-# define GLIB_VAR extern
-# endif /* !G_OS_WIN32 */
-#endif /* GLIB_VAR */
-
/* GLib Thread support
*/
-extern GQuark g_thread_error_quark();
-#define G_THREAD_ERROR g_thread_error_quark()
+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 void (*GThreadFunc) (gpointer value);
+typedef gpointer (*GThreadFunc) (gpointer data);
typedef enum
{
typedef struct _GThread GThread;
struct _GThread
{
- GThreadPriority priority;
- gboolean bound;
+ /*< private >*/
+ GThreadFunc func;
+ gpointer data;
gboolean joinable;
+ GThreadPriority priority;
};
typedef struct _GMutex GMutex;
gpointer (*private_get) (GPrivate *private_key);
void (*private_set) (GPrivate *private_key,
gpointer data);
- void (*thread_create) (GThreadFunc thread_func,
- gpointer arg,
+ void (*thread_create) (GThreadFunc func,
+ gpointer data,
gulong stack_size,
gboolean joinable,
gboolean bound,
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_with_errorcheck_mutexes (GThreadFunctions* vtable);
+/* Checks if thread support is initialized. Identical to the
+ * g_thread_supported macro but provided for language bindings.
+ */
+gboolean g_thread_get_initialized (void);
+
/* A random number to recognize debug calls to g_mutex_... */
#define G_MUTEX_DEBUG_MAGIC 0xf8e18ad7
/* 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 (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) \
+#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*, gulong, gchar*)) \
+ (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) \
+# define g_mutex_lock(mutex) \
G_THREAD_CF (mutex_lock, (void)0, (mutex))
-# define g_mutex_trylock(mutex) \
+# define g_mutex_trylock(mutex) \
G_THREAD_CF (mutex_trylock, TRUE, (mutex))
-# define g_mutex_unlock(mutex) \
+# define g_mutex_unlock(mutex) \
G_THREAD_CF (mutex_unlock, (void)0, (mutex))
-# define g_cond_wait(cond, 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) \
+# 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_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 () ? \
+# 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) \
+ g_thread_functions_for_glib_use.cond_timed_wait) \
(cond, mutex, abs_time, G_MUTEX_DEBUG_MAGIC, G_STRLOC) : TRUE)
#endif /* G_ERRORCHECK_MUTEXES */
+#if defined(G_THREADS_ENABLED) && defined(G_THREADS_MANDATORY)
+#define g_thread_supported() 1
+#else
#define g_thread_supported() (g_threads_got_initialized)
+#endif
#define g_mutex_new() G_THREAD_UF (mutex_new, ())
-#define g_mutex_free(mutex) G_THREAD_CF (mutex_free, (void)0, (mutex))
#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))
(GPrivate*) (value)), \
(private_key, value))
#define g_thread_yield() G_THREAD_CF (thread_yield, (void)0, ())
-#define g_thread_exit() G_THREAD_CF (thread_exit, (void)0, ())
-
-GThread* g_thread_create (GThreadFunc thread_func,
- gpointer arg,
- gulong stack_size,
- gboolean joinable,
- gboolean bound,
- GThreadPriority priority,
- GError **error);
-GThread* g_thread_self (void);
-void g_thread_join (GThread *thread);
-void g_thread_set_priority (GThread *thread,
- GThreadPriority priority);
+
+#define g_thread_create(func, data, joinable, error) \
+ (g_thread_create_full (func, data, 0, joinable, FALSE, \
+ G_THREAD_PRIORITY_NORMAL, error))
+
+GThread* g_thread_create_full (GThreadFunc func,
+ gpointer data,
+ gulong stack_size,
+ gboolean joinable,
+ gboolean bound,
+ GThreadPriority priority,
+ GError **error);
+GThread* g_thread_self (void);
+void g_thread_exit (gpointer retval);
+gpointer g_thread_join (GThread *thread);
+
+void g_thread_set_priority (GThread *thread,
+ GThreadPriority priority);
/* GStaticMutexes can be statically initialized with the value
* G_STATIC_MUTEX_INIT, and then they can directly be used, that is
g_mutex_trylock (g_static_mutex_get_mutex (mutex))
#define g_static_mutex_unlock(mutex) \
g_mutex_unlock (g_static_mutex_get_mutex (mutex))
+void g_static_mutex_init (GStaticMutex *mutex);
+void g_static_mutex_free (GStaticMutex *mutex);
struct _GStaticPrivate
{
+ /*< private >*/
guint index;
};
#define G_STATIC_PRIVATE_INIT { 0 }
-gpointer g_static_private_get (GStaticPrivate *private_key);
-void g_static_private_set (GStaticPrivate *private_key,
- gpointer data,
- GDestroyNotify notify);
-gpointer g_static_private_get_for_thread (GStaticPrivate *private_key,
- GThread *thread);
-void g_static_private_set_for_thread (GStaticPrivate *private_key,
- GThread *thread,
- gpointer data,
- GDestroyNotify notify);
+void g_static_private_init (GStaticPrivate *private_key);
+gpointer g_static_private_get (GStaticPrivate *private_key);
+void g_static_private_set (GStaticPrivate *private_key,
+ gpointer data,
+ GDestroyNotify notify);
+void g_static_private_free (GStaticPrivate *private_key);
typedef struct _GStaticRecMutex GStaticRecMutex;
struct _GStaticRecMutex
{
+ /*< private >*/
GStaticMutex mutex;
- unsigned int depth;
+ guint depth;
GSystemThread owner;
};
#define G_STATIC_REC_MUTEX_INIT { G_STATIC_MUTEX_INIT }
+void g_static_rec_mutex_init (GStaticRecMutex *mutex);
void g_static_rec_mutex_lock (GStaticRecMutex *mutex);
gboolean g_static_rec_mutex_trylock (GStaticRecMutex *mutex);
void g_static_rec_mutex_unlock (GStaticRecMutex *mutex);
void g_static_rec_mutex_lock_full (GStaticRecMutex *mutex,
guint depth);
guint g_static_rec_mutex_unlock_full (GStaticRecMutex *mutex);
+void g_static_rec_mutex_free (GStaticRecMutex *mutex);
typedef struct _GStaticRWLock GStaticRWLock;
struct _GStaticRWLock
{
+ /*< private >*/
GStaticMutex mutex;
GCond *read_cond;
GCond *write_cond;
guint read_counter;
- gboolean write;
+ gboolean have_writer;
+ guint want_to_read;
guint want_to_write;
};
-#define G_STATIC_RW_LOCK_INIT { G_STATIC_MUTEX_INIT, NULL, NULL, 0, FALSE, FALSE }
+#define G_STATIC_RW_LOCK_INIT { G_STATIC_MUTEX_INIT, NULL, NULL, 0, FALSE, 0, 0 }
+void g_static_rw_lock_init (GStaticRWLock* lock);
void g_static_rw_lock_reader_lock (GStaticRWLock* lock);
gboolean g_static_rw_lock_reader_trylock (GStaticRWLock* lock);
void g_static_rw_lock_reader_unlock (GStaticRWLock* lock);
void g_static_rw_lock_writer_lock (GStaticRWLock* lock);
gboolean g_static_rw_lock_writer_trylock (GStaticRWLock* lock);
void g_static_rw_lock_writer_unlock (GStaticRWLock* lock);
-void g_static_rw_lock_free (GStaticRWLock* lock);
+void g_static_rw_lock_free (GStaticRWLock* lock);
+
+void g_thread_foreach (GFunc thread_func,
+ gpointer user_data);
+
+typedef enum
+{
+ G_ONCE_STATUS_NOTCALLED,
+ G_ONCE_STATUS_PROGRESS,
+ G_ONCE_STATUS_READY
+} GOnceStatus;
+
+typedef struct _GOnce GOnce;
+struct _GOnce
+{
+ volatile GOnceStatus status;
+ volatile gpointer retval;
+};
+
+#define G_ONCE_INIT { G_ONCE_STATUS_NOTCALLED, NULL }
+
+gpointer g_once_impl (GOnce *once, GThreadFunc func, gpointer arg);
+
+#ifdef G_ATOMIC_OP_MEMORY_BARRIER_NEEDED
+# define g_once(once, func, arg) g_once_impl ((once), (func), (arg))
+#else /* !G_ATOMIC_OP_MEMORY_BARRIER_NEEDED*/
+# define g_once(once, func, arg) \
+ (((once)->status == G_ONCE_STATUS_READY) ? \
+ (once)->retval : \
+ g_once_impl ((once), (func), (arg)))
+#endif /* G_ATOMIC_OP_MEMORY_BARRIER_NEEDED */
+
+/* initialize-once guards, keyed by value_location */
+G_INLINE_FUNC gboolean g_once_init_enter (volatile gsize *value_location);
+gboolean g_once_init_enter_impl (volatile gsize *value_location);
+void g_once_init_leave (volatile gsize *value_location,
+ gsize initialization_value);
+#if defined (G_CAN_INLINE) || defined (__G_THREAD_C__)
+G_INLINE_FUNC gboolean
+g_once_init_enter (volatile gsize *value_location)
+{
+ if G_LIKELY ((gpointer) g_atomic_pointer_get (value_location) != NULL)
+ return FALSE;
+ else
+ return g_once_init_enter_impl (value_location);
+}
+#endif /* G_CAN_INLINE || __G_THREAD_C__ */
/* these are some convenience macros that expand to nothing if GLib
* was configured with --disable-threads. for using StaticMutexes,
# define G_LOCK(name) G_STMT_START{ \
g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, \
"file %s: line %d (%s): locking: %s ", \
- __FILE__, __LINE__, G_GNUC_PRETTY_FUNCTION, \
+ __FILE__, __LINE__, G_STRFUNC, \
#name); \
g_static_mutex_lock (&G_LOCK_NAME (name)); \
}G_STMT_END
# define G_UNLOCK(name) G_STMT_START{ \
g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, \
"file %s: line %d (%s): unlocking: %s ", \
- __FILE__, __LINE__, G_GNUC_PRETTY_FUNCTION, \
+ __FILE__, __LINE__, G_STRFUNC, \
#name); \
g_static_mutex_unlock (&G_LOCK_NAME (name)); \
}G_STMT_END
# define G_TRYLOCK(name) \
(g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, \
"file %s: line %d (%s): try locking: %s ", \
- __FILE__, __LINE__, G_GNUC_PRETTY_FUNCTION, \
+ __FILE__, __LINE__, G_STRFUNC, \
#name), g_static_mutex_trylock (&G_LOCK_NAME (name)))
# else /* !G_DEBUG_LOCKS */
# define G_LOCK(name) g_static_mutex_lock (&G_LOCK_NAME (name))
G_END_DECLS
#endif /* __G_THREAD_H__ */
-
projects / platform / upstream / glib.git / blobdiff