/* 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
* licence, 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 (__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/gatomic.h>
#include <glib/gerror.h>
G_BEGIN_DECLS
#define G_THREAD_ERROR g_thread_error_quark ()
GQuark g_thread_error_quark (void);
typedef enum
{
G_THREAD_ERROR_AGAIN /* Resource temporarily unavailable */
} GThreadError;
typedef gpointer (*GThreadFunc) (gpointer data);
typedef struct _GThread GThread;
typedef union _GMutex GMutex;
typedef struct _GRecMutex GRecMutex;
typedef struct _GRWLock GRWLock;
typedef struct _GCond GCond;
typedef struct _GPrivate GPrivate;
typedef struct _GOnce GOnce;
union _GMutex
{
/*< private >*/
gpointer p;
guint i[2];
};
struct _GRWLock
{
/*< private >*/
gpointer p;
guint i[2];
};
struct _GCond
{
/*< private >*/
gpointer p;
guint i[2];
};
struct _GRecMutex
{
/*< private >*/
gpointer p;
guint i[2];
};
#define G_PRIVATE_INIT(notify) { NULL, (notify), { NULL, NULL } }
struct _GPrivate
{
/*< private >*/
gpointer p;
GDestroyNotify notify;
gpointer future[2];
};
typedef enum
{
G_ONCE_STATUS_NOTCALLED,
G_ONCE_STATUS_PROGRESS,
G_ONCE_STATUS_READY
} GOnceStatus;
#define G_ONCE_INIT { G_ONCE_STATUS_NOTCALLED, NULL }
struct _GOnce
{
volatile GOnceStatus status;
volatile gpointer retval;
};
#define G_LOCK_NAME(name) g__ ## name ## _lock
#define G_LOCK_DEFINE_STATIC(name) static G_LOCK_DEFINE (name)
#define G_LOCK_DEFINE(name) GMutex G_LOCK_NAME (name)
#define G_LOCK_EXTERN(name) extern GMutex G_LOCK_NAME (name)
#ifdef G_DEBUG_LOCKS
# 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_STRFUNC, \
#name); \
g_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_STRFUNC, \
#name); \
g_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_STRFUNC, \
#name), g_mutex_trylock (&G_LOCK_NAME (name)))
#else /* !G_DEBUG_LOCKS */
# define G_LOCK(name) g_mutex_lock (&G_LOCK_NAME (name))
# define G_UNLOCK(name) g_mutex_unlock (&G_LOCK_NAME (name))
# define G_TRYLOCK(name) g_mutex_trylock (&G_LOCK_NAME (name))
#endif /* !G_DEBUG_LOCKS */
GThread * g_thread_ref (GThread *thread);
void g_thread_unref (GThread *thread);
GThread * g_thread_new (const gchar *name,
GThreadFunc func,
gpointer data);
GThread * g_thread_try_new (const gchar *name,
GThreadFunc func,
gpointer data,
GError **error);
GThread * g_thread_self (void);
void g_thread_exit (gpointer retval);
gpointer g_thread_join (GThread *thread);
void g_thread_yield (void);
void g_mutex_init (GMutex *mutex);
void g_mutex_clear (GMutex *mutex);
void g_mutex_lock (GMutex *mutex);
gboolean g_mutex_trylock (GMutex *mutex);
void g_mutex_unlock (GMutex *mutex);
void g_rw_lock_init (GRWLock *rw_lock);
void g_rw_lock_clear (GRWLock *rw_lock);
void g_rw_lock_writer_lock (GRWLock *rw_lock);
gboolean g_rw_lock_writer_trylock (GRWLock *rw_lock);
void g_rw_lock_writer_unlock (GRWLock *rw_lock);
void g_rw_lock_reader_lock (GRWLock *rw_lock);
gboolean g_rw_lock_reader_trylock (GRWLock *rw_lock);
void g_rw_lock_reader_unlock (GRWLock *rw_lock);
void g_rec_mutex_init (GRecMutex *rec_mutex);
void g_rec_mutex_clear (GRecMutex *rec_mutex);
void g_rec_mutex_lock (GRecMutex *rec_mutex);
gboolean g_rec_mutex_trylock (GRecMutex *rec_mutex);
void g_rec_mutex_unlock (GRecMutex *rec_mutex);
void g_cond_init (GCond *cond);
void g_cond_clear (GCond *cond);
void g_cond_wait (GCond *cond,
GMutex *mutex);
void g_cond_signal (GCond *cond);
void g_cond_broadcast (GCond *cond);
gboolean g_cond_wait_until (GCond *cond,
GMutex *mutex,
gint64 end_time);
gpointer g_private_get (GPrivate *key);
void g_private_set (GPrivate *key,
gpointer value);
void g_private_replace (GPrivate *key,
gpointer value);
gpointer g_once_impl (GOnce *once,
GThreadFunc func,
gpointer arg);
gboolean g_once_init_enter (volatile void *location);
void g_once_init_leave (volatile void *location,
gsize result);
#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 */
#ifdef __GNUC__
# define g_once_init_enter(location) \
(G_GNUC_EXTENSION ({ \
G_STATIC_ASSERT (sizeof *(location) == sizeof (gpointer)); \
(void) (0 ? (gpointer) *(location) : 0); \
(!g_atomic_pointer_get (location) && \
g_once_init_enter (location)); \
}))
# define g_once_init_leave(location, result) \
(G_GNUC_EXTENSION ({ \
G_STATIC_ASSERT (sizeof *(location) == sizeof (gpointer)); \
(void) (0 ? *(location) = (result) : 0); \
g_once_init_leave ((location), (gsize) (result)); \
}))
#else
# define g_once_init_enter(location) \
(g_once_init_enter((location)))
# define g_once_init_leave(location, result) \
(g_once_init_leave((location), (gsize) (result)))
#endif
G_END_DECLS
#endif /* __G_THREAD_H__ */