--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/glib/glib/gthread.c Fri Apr 16 16:46:38 2010 +0300
@@ -0,0 +1,1125 @@
+/* GLIB - Library of useful routines for C programming
+ * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
+ *
+ * gthread.c: MT safety related functions
+ * Copyright 1998 Sebastian Wilhelmi; University of Karlsruhe
+ * Owen Taylor
+ * Portions copyright (c) 2006-2009 Nokia Corporation. All rights reserved.
+ *
+ * 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/.
+ */
+
+/*
+ * MT safe
+ */
+
+/* implement gthread.h's inline functions */
+#define G_IMPLEMENT_INLINES 1
+#define __G_THREAD_C__
+
+#include "config.h"
+
+#include "glib.h"
+#include "gthreadprivate.h"
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#ifndef G_OS_WIN32
+#include <sys/time.h>
+#include <time.h>
+#else
+#include <windows.h>
+#endif /* G_OS_WIN32 */
+
+#include <string.h>
+
+#include "galias.h"
+
+#ifdef __SYMBIAN32__
+#include "glib_wsd.h"
+#endif /* __SYMBIAN32__ */
+
+EXPORT_C GQuark
+g_thread_error_quark (void)
+{
+ return g_quark_from_static_string ("g_thread_error");
+}
+
+/* Keep this in sync with GRealThread in gmain.c! */
+typedef struct _GRealThread GRealThread;
+struct _GRealThread
+{
+ GThread thread;
+ gpointer private_data;
+ GRealThread *next;
+ gpointer retval;
+ GSystemThread system_thread;
+};
+
+typedef struct _GStaticPrivateNode GStaticPrivateNode;
+struct _GStaticPrivateNode
+{
+ gpointer data;
+ GDestroyNotify destroy;
+};
+
+static void g_thread_cleanup (gpointer data);
+static void g_thread_fail (void);
+#if EMULATOR
+guint64 gettime (void);
+#else
+static guint64 gettime (void);
+#endif
+#if EMULATOR
+PLS(g_thread_gettime,gthread,function_type)
+#define g_thread_gettime (*FUNCTION_NAME(g_thread_gettime,gthread)())
+#else
+guint64 (*g_thread_gettime) (void) = gettime;
+#endif//EMULATOR
+#ifdef __SYMBIAN32__
+EXPORT_C gettimetype *_g_thread_gettime()
+ {
+ return &g_thread_gettime;
+ }
+#endif//__SYMBIAN32__
+/* Global variables */
+
+
+#if EMULATOR
+
+PLS(zero_thread,gthread,GSystemThread)
+#define zero_thread (*FUNCTION_NAME(zero_thread,gthread)())
+
+#else
+
+static GSystemThread zero_thread; /* This is initialized to all zero */
+
+#endif /* EMULATOR */
+
+#if EMULATOR
+
+PLS(g_thread_use_default_impl,gthread,gboolean)
+PLS(g_threads_got_initialized,gthread,gboolean)
+PLS(g_thread_functions_for_glib_use,gthread,GThreadFunctions)
+
+#define g_thread_use_default_impl (*FUNCTION_NAME(g_thread_use_default_impl,gthread)())
+#define g_threads_got_initialized (*FUNCTION_NAME(g_threads_got_initialized,gthread)())
+#define g_thread_functions_for_glib_use (*FUNCTION_NAME(g_thread_functions_for_glib_use,gthread)())
+
+const GThreadFunctions temp_g_thread_functions_for_glib_use = {
+ (GMutex*(*)())g_thread_fail, /* mutex_new */
+ NULL, /* mutex_lock */
+ NULL, /* mutex_trylock */
+ NULL, /* mutex_unlock */
+ NULL, /* mutex_free */
+ (GCond*(*)())g_thread_fail, /* cond_new */
+ NULL, /* cond_signal */
+ NULL, /* cond_broadcast */
+ NULL, /* cond_wait */
+ NULL, /* cond_timed_wait */
+ NULL, /* cond_free */
+ (GPrivate*(*)(GDestroyNotify))g_thread_fail, /* private_new */
+ NULL, /* private_get */
+ NULL, /* private_set */
+ (void(*)(GThreadFunc, gpointer, gulong,
+ gboolean, gboolean, GThreadPriority,
+ gpointer, GError**))g_thread_fail, /* thread_create */
+ NULL, /* thread_yield */
+ NULL, /* thread_join */
+ NULL, /* thread_exit */
+ NULL, /* thread_set_priority */
+ NULL, /* thread_self */
+ NULL /* thread_equal */
+};
+
+#else
+
+gboolean g_thread_use_default_impl = TRUE;
+gboolean g_threads_got_initialized = FALSE;
+
+GThreadFunctions g_thread_functions_for_glib_use = {
+ (GMutex*(*)())g_thread_fail, /* mutex_new */
+ NULL, /* mutex_lock */
+ NULL, /* mutex_trylock */
+ NULL, /* mutex_unlock */
+ NULL, /* mutex_free */
+ (GCond*(*)())g_thread_fail, /* cond_new */
+ NULL, /* cond_signal */
+ NULL, /* cond_broadcast */
+ NULL, /* cond_wait */
+ NULL, /* cond_timed_wait */
+ NULL, /* cond_free */
+ (GPrivate*(*)(GDestroyNotify))g_thread_fail, /* private_new */
+ NULL, /* private_get */
+ NULL, /* private_set */
+ (void(*)(GThreadFunc, gpointer, gulong,
+ gboolean, gboolean, GThreadPriority,
+ gpointer, GError**))g_thread_fail, /* thread_create */
+ NULL, /* thread_yield */
+ NULL, /* thread_join */
+ NULL, /* thread_exit */
+ NULL, /* thread_set_priority */
+ NULL, /* thread_self */
+ NULL /* thread_equal */
+};
+#endif
+
+#ifdef __SYMBIAN32__
+EXPORT_C gboolean *_g_thread_use_default_impl(void)
+{
+ return &g_thread_use_default_impl;
+}
+
+EXPORT_C gboolean *_g_threads_got_initialized(void)
+{
+ return &g_threads_got_initialized;
+}
+
+EXPORT_C GThreadFunctions *_g_thread_functions_for_glib_use(void)
+{
+ return &g_thread_functions_for_glib_use;
+}
+
+EXPORT_C gboolean g_thread_supported (void)
+{
+ return g_threads_got_initialized;
+}
+
+#endif /* __SYMBIAN32__ */
+
+
+/* Local data */
+
+#if EMULATOR
+
+PLS(g_once_mutex,gthread,GMutex *)
+PLS(g_once_cond,gthread,GCond *)
+PLS(g_thread_specific_private ,gthread,GPrivate *)
+PLS(g_thread_all_threads,gthread,GRealThread *)
+PLS(g_thread_free_indeces,gthread,GSList *)
+PLS(g_once_init_list,gthread,GSList *)
+PLS_MACRO(g_thread,gthread,GStaticMutex)
+
+#define g_once_mutex (*FUNCTION_NAME(g_once_mutex,gthread)())
+#define g_once_cond (*FUNCTION_NAME(g_once_cond,gthread)())
+#define g_thread_specific_private (*FUNCTION_NAME(g_thread_specific_private ,gthread)())
+#define g_thread_all_threads (*FUNCTION_NAME(g_thread_all_threads,gthread)())
+#define g_thread_free_indeces (*FUNCTION_NAME(g_thread_free_indeces,gthread)())
+#define g_once_init_list (*FUNCTION_NAME(g_once_init_list,gthread)())
+#define g__g_thread_lock (*FUNCTION_NAME_MACRO(g_thread,gthread)())
+
+#else
+
+static GMutex *g_once_mutex = NULL;
+static GCond *g_once_cond = NULL;
+static GPrivate *g_thread_specific_private = NULL;
+static GRealThread *g_thread_all_threads = NULL;
+static GSList *g_thread_free_indeces = NULL;
+static GSList* g_once_init_list = NULL;
+
+G_LOCK_DEFINE_STATIC (g_thread);
+
+#endif /* EMULATOR */
+
+#ifdef G_THREADS_ENABLED
+/* This must be called only once, before any threads are created.
+ * It will only be called from g_thread_init() in -lgthread.
+ */
+EXPORT_C void
+g_thread_init_glib (void)
+{
+ /* We let the main thread (the one that calls g_thread_init) inherit
+ * the static_private data set before calling g_thread_init
+ */
+ GRealThread* main_thread = (GRealThread*) g_thread_self ();
+
+ /* mutex and cond creation works without g_threads_got_initialized */
+ g_once_mutex = g_mutex_new ();
+ g_once_cond = g_cond_new ();
+
+ /* we may only create mutex and cond in here */
+ _g_mem_thread_init_noprivate_nomessage ();
+
+ /* setup the basic threading system */
+ g_threads_got_initialized = TRUE;
+ g_thread_specific_private = g_private_new (g_thread_cleanup);
+ g_private_set (g_thread_specific_private, main_thread);
+ G_THREAD_UF (thread_self, (&main_thread->system_thread));
+
+ /* complete memory system initialization, g_private_*() works now */
+ _g_slice_thread_init_nomessage ();
+
+ /* accomplish log system initialization to enable messaging */
+ _g_messages_thread_init_nomessage ();
+
+ /* we may run full-fledged initializers from here */
+ _g_atomic_thread_init ();
+ _g_convert_thread_init ();
+ _g_rand_thread_init ();
+ _g_main_thread_init ();
+ _g_utils_thread_init ();
+#ifdef G_OS_WIN32
+ _g_win32_thread_init ();
+#endif
+}
+#endif /* G_THREADS_ENABLED */
+
+EXPORT_C gpointer
+g_once_impl (GOnce *once,
+ GThreadFunc func,
+ gpointer arg)
+{
+ g_mutex_lock (g_once_mutex);
+
+ while (once->status == G_ONCE_STATUS_PROGRESS)
+ g_cond_wait (g_once_cond, g_once_mutex);
+
+ if (once->status != G_ONCE_STATUS_READY)
+ {
+ once->status = G_ONCE_STATUS_PROGRESS;
+ g_mutex_unlock (g_once_mutex);
+
+ once->retval = func (arg);
+
+ g_mutex_lock (g_once_mutex);
+ once->status = G_ONCE_STATUS_READY;
+ g_cond_broadcast (g_once_cond);
+ }
+
+ g_mutex_unlock (g_once_mutex);
+
+ return once->retval;
+}
+
+EXPORT_C gboolean
+g_once_init_enter_impl (volatile gsize *value_location)
+{
+ gboolean need_init = FALSE;
+ g_mutex_lock (g_once_mutex);
+ if (g_atomic_pointer_get (value_location) == NULL)
+ {
+ if (!g_slist_find (g_once_init_list, (void*) value_location))
+ {
+ need_init = TRUE;
+ g_once_init_list = g_slist_prepend (g_once_init_list, (void*) value_location);
+ }
+ else
+ do
+ g_cond_wait (g_once_cond, g_once_mutex);
+ while (g_slist_find (g_once_init_list, (void*) value_location));
+ }
+ g_mutex_unlock (g_once_mutex);
+ return need_init;
+}
+
+EXPORT_C void
+g_once_init_leave (volatile gsize *value_location,
+ gsize initialization_value)
+{
+ g_return_if_fail (g_atomic_pointer_get (value_location) == NULL);
+ g_return_if_fail (initialization_value != 0);
+ g_return_if_fail (g_once_init_list != NULL);
+
+ g_atomic_pointer_set ((void**)value_location, (void*) initialization_value);
+ g_mutex_lock (g_once_mutex);
+ g_once_init_list = g_slist_remove (g_once_init_list, (void*) value_location);
+ g_cond_broadcast (g_once_cond);
+ g_mutex_unlock (g_once_mutex);
+}
+
+EXPORT_C void
+g_static_mutex_init (GStaticMutex *mutex)
+{
+ static const GStaticMutex init_mutex = G_STATIC_MUTEX_INIT;
+
+ g_return_if_fail (mutex);
+
+ *mutex = init_mutex;
+}
+
+EXPORT_C GMutex *
+g_static_mutex_get_mutex_impl (GMutex** mutex)
+{
+ if (!g_thread_supported ())
+ return NULL;
+
+ g_assert (g_once_mutex);
+
+ g_mutex_lock (g_once_mutex);
+
+ if (!(*mutex))
+ g_atomic_pointer_set (mutex, g_mutex_new());
+
+ g_mutex_unlock (g_once_mutex);
+
+ return *mutex;
+}
+
+EXPORT_C void
+g_static_mutex_free (GStaticMutex* mutex)
+{
+ GMutex **runtime_mutex;
+
+ g_return_if_fail (mutex);
+
+ /* The runtime_mutex is the first (or only) member of GStaticMutex,
+ * see both versions (of glibconfig.h) in configure.in. Note, that
+ * this variable is NULL, if g_thread_init() hasn't been called or
+ * if we're using the default thread implementation and it provides
+ * static mutexes. */
+ runtime_mutex = ((GMutex**)mutex);
+
+ if (*runtime_mutex)
+ g_mutex_free (*runtime_mutex);
+
+ *runtime_mutex = NULL;
+}
+
+EXPORT_C void
+g_static_rec_mutex_init (GStaticRecMutex *mutex)
+{
+ static const GStaticRecMutex init_mutex = G_STATIC_REC_MUTEX_INIT;
+
+ g_return_if_fail (mutex);
+
+ *mutex = init_mutex;
+}
+
+EXPORT_C void
+g_static_rec_mutex_lock (GStaticRecMutex* mutex)
+{
+ GSystemThread self;
+
+ g_return_if_fail (mutex);
+
+ if (!g_thread_supported ())
+ return;
+
+ G_THREAD_UF (thread_self, (&self));
+
+ if (g_system_thread_equal (self, mutex->owner))
+ {
+ mutex->depth++;
+ return;
+ }
+ g_static_mutex_lock (&mutex->mutex);
+ g_system_thread_assign (mutex->owner, self);
+ mutex->depth = 1;
+}
+
+EXPORT_C gboolean
+g_static_rec_mutex_trylock (GStaticRecMutex* mutex)
+{
+ GSystemThread self;
+
+ g_return_val_if_fail (mutex, FALSE);
+
+ if (!g_thread_supported ())
+ return TRUE;
+
+ G_THREAD_UF (thread_self, (&self));
+
+ if (g_system_thread_equal (self, mutex->owner))
+ {
+ mutex->depth++;
+ return TRUE;
+ }
+
+ if (!g_static_mutex_trylock (&mutex->mutex))
+ return FALSE;
+
+ g_system_thread_assign (mutex->owner, self);
+ mutex->depth = 1;
+ return TRUE;
+}
+
+EXPORT_C void
+g_static_rec_mutex_unlock (GStaticRecMutex* mutex)
+{
+ g_return_if_fail (mutex);
+
+ if (!g_thread_supported ())
+ return;
+
+ if (mutex->depth > 1)
+ {
+ mutex->depth--;
+ return;
+ }
+ g_system_thread_assign (mutex->owner, zero_thread);
+ g_static_mutex_unlock (&mutex->mutex);
+}
+
+EXPORT_C void
+g_static_rec_mutex_lock_full (GStaticRecMutex *mutex,
+ guint depth)
+{
+ GSystemThread self;
+ g_return_if_fail (mutex);
+
+ if (!g_thread_supported ())
+ return;
+
+ if (depth == 0)
+ return;
+
+ G_THREAD_UF (thread_self, (&self));
+
+ if (g_system_thread_equal (self, mutex->owner))
+ {
+ mutex->depth += depth;
+ return;
+ }
+ g_static_mutex_lock (&mutex->mutex);
+ g_system_thread_assign (mutex->owner, self);
+ mutex->depth = depth;
+}
+
+EXPORT_C guint
+g_static_rec_mutex_unlock_full (GStaticRecMutex *mutex)
+{
+ guint depth;
+
+ g_return_val_if_fail (mutex, 0);
+
+ if (!g_thread_supported ())
+ return 1;
+
+ depth = mutex->depth;
+
+ g_system_thread_assign (mutex->owner, zero_thread);
+ mutex->depth = 0;
+ g_static_mutex_unlock (&mutex->mutex);
+
+ return depth;
+}
+
+EXPORT_C void
+g_static_rec_mutex_free (GStaticRecMutex *mutex)
+{
+ g_return_if_fail (mutex);
+
+ g_static_mutex_free (&mutex->mutex);
+}
+
+EXPORT_C void
+g_static_private_init (GStaticPrivate *private_key)
+{
+ private_key->index = 0;
+}
+
+EXPORT_C gpointer
+g_static_private_get (GStaticPrivate *private_key)
+{
+ GRealThread *self = (GRealThread*) g_thread_self ();
+ GArray *array;
+
+ array = self->private_data;
+ if (!array)
+ return NULL;
+
+ if (!private_key->index)
+ return NULL;
+ else if (private_key->index <= array->len)
+ return g_array_index (array, GStaticPrivateNode,
+ private_key->index - 1).data;
+ else
+ return NULL;
+}
+
+#if EMULATOR
+
+PLS(next_index ,g_static_private_set,guint)
+#define next_index (*FUNCTION_NAME(next_index ,g_static_private_set)())
+
+#endif /* EMULATOR */
+
+EXPORT_C void
+g_static_private_set (GStaticPrivate *private_key,
+ gpointer data,
+ GDestroyNotify notify)
+{
+ GRealThread *self = (GRealThread*) g_thread_self ();
+ GArray *array;
+ #if !(EMULATOR)
+ static guint next_index = 0;
+ #endif /* EMULATOR */
+
+ GStaticPrivateNode *node;
+
+ array = self->private_data;
+ if (!array)
+ {
+ array = g_array_new (FALSE, TRUE, sizeof (GStaticPrivateNode));
+ self->private_data = array;
+ }
+
+ if (!private_key->index)
+ {
+ G_LOCK (g_thread);
+
+ if (!private_key->index)
+ {
+ if (g_thread_free_indeces)
+ {
+ private_key->index =
+ GPOINTER_TO_UINT (g_thread_free_indeces->data);
+ g_thread_free_indeces =
+ g_slist_delete_link (g_thread_free_indeces,
+ g_thread_free_indeces);
+ }
+ else
+ private_key->index = ++next_index;
+ }
+
+ G_UNLOCK (g_thread);
+ }
+
+ if (private_key->index > array->len)
+ g_array_set_size (array, private_key->index);
+
+ node = &g_array_index (array, GStaticPrivateNode, private_key->index - 1);
+ if (node->destroy)
+ {
+ gpointer ddata = node->data;
+ GDestroyNotify ddestroy = node->destroy;
+
+ node->data = data;
+ node->destroy = notify;
+
+ ddestroy (ddata);
+ }
+ else
+ {
+ node->data = data;
+ node->destroy = notify;
+ }
+}
+
+#if EMULATOR
+#undef next_index
+#endif /* EMULATOR */
+
+EXPORT_C void
+g_static_private_free (GStaticPrivate *private_key)
+{
+ guint idx = private_key->index;
+ GRealThread *thread;
+
+ if (!idx)
+ return;
+
+ private_key->index = 0;
+
+ G_LOCK (g_thread);
+
+ thread = g_thread_all_threads;
+ while (thread)
+ {
+ GArray *array = thread->private_data;
+ thread = thread->next;
+
+ if (array && idx <= array->len)
+ {
+ GStaticPrivateNode *node = &g_array_index (array,
+ GStaticPrivateNode,
+ idx - 1);
+ gpointer ddata = node->data;
+ GDestroyNotify ddestroy = node->destroy;
+
+ node->data = NULL;
+ node->destroy = NULL;
+
+ if (ddestroy)
+ {
+ G_UNLOCK (g_thread);
+ ddestroy (ddata);
+ G_LOCK (g_thread);
+ }
+ }
+ }
+ g_thread_free_indeces = g_slist_prepend (g_thread_free_indeces,
+ GUINT_TO_POINTER (idx));
+ G_UNLOCK (g_thread);
+}
+
+static void
+g_thread_cleanup (gpointer data)
+{
+ if (data)
+ {
+ GRealThread* thread = data;
+ if (thread->private_data)
+ {
+ GArray* array = thread->private_data;
+ guint i;
+
+ for (i = 0; i < array->len; i++ )
+ {
+ GStaticPrivateNode *node =
+ &g_array_index (array, GStaticPrivateNode, i);
+ if (node->destroy)
+ node->destroy (node->data);
+ }
+ g_array_free (array, TRUE);
+ }
+
+ /* We only free the thread structure, if it isn't joinable. If
+ it is, the structure is freed in g_thread_join */
+ if (!thread->thread.joinable)
+ {
+ GRealThread *t, *p;
+
+ G_LOCK (g_thread);
+ for (t = g_thread_all_threads, p = NULL; t; p = t, t = t->next)
+ {
+ if (t == thread)
+ {
+ if (p)
+ p->next = t->next;
+ else
+ g_thread_all_threads = t->next;
+ break;
+ }
+ }
+ G_UNLOCK (g_thread);
+
+ /* Just to make sure, this isn't used any more */
+ g_system_thread_assign (thread->system_thread, zero_thread);
+ g_free (thread);
+ }
+ }
+}
+
+static void
+g_thread_fail (void)
+{
+ g_error ("The thread system is not yet initialized.");
+}
+
+#define G_NSEC_PER_SEC 1000000000
+#if EMULATOR
+guint64
+gettime (void)
+#else
+static guint64
+gettime (void)
+#endif
+{
+#ifdef G_OS_WIN32
+ guint64 v;
+
+ /* Returns 100s of nanoseconds since start of 1601 */
+ GetSystemTimeAsFileTime ((FILETIME *)&v);
+
+ /* Offset to Unix epoch */
+ v -= G_GINT64_CONSTANT (116444736000000000);
+ /* Convert to nanoseconds */
+ v *= 100;
+
+ return v;
+#else
+ struct timeval tv;
+
+ gettimeofday (&tv, NULL);
+
+ return (guint64) tv.tv_sec * G_NSEC_PER_SEC + tv.tv_usec * (G_NSEC_PER_SEC / G_USEC_PER_SEC);
+#endif
+}
+
+static gpointer
+g_thread_create_proxy (gpointer data)
+{
+ GRealThread* thread = data;
+
+ g_assert (data);
+
+ /* This has to happen before G_LOCK, as that might call g_thread_self */
+ g_private_set (g_thread_specific_private, data);
+
+ /* the lock makes sure, that thread->system_thread is written,
+ before thread->thread.func is called. See g_thread_create. */
+ G_LOCK (g_thread);
+ G_UNLOCK (g_thread);
+
+ thread->retval = thread->thread.func (thread->thread.data);
+
+ return NULL;
+}
+
+EXPORT_C GThread*
+g_thread_create_full (GThreadFunc func,
+ gpointer data,
+ gulong stack_size,
+ gboolean joinable,
+ gboolean bound,
+ GThreadPriority priority,
+ GError **error)
+{
+ GRealThread* result;
+ GError *local_error = NULL;
+ g_return_val_if_fail (func, NULL);
+ g_return_val_if_fail (priority >= G_THREAD_PRIORITY_LOW, NULL);
+ g_return_val_if_fail (priority <= G_THREAD_PRIORITY_URGENT, NULL);
+
+ result = g_new0 (GRealThread, 1);
+
+ result->thread.joinable = joinable;
+ result->thread.priority = priority;
+ result->thread.func = func;
+ result->thread.data = data;
+ result->private_data = NULL;
+ G_LOCK (g_thread);
+ G_THREAD_UF (thread_create, (g_thread_create_proxy, result,
+ stack_size, joinable, bound, priority,
+ &result->system_thread, &local_error));
+ if (!local_error)
+ {
+ result->next = g_thread_all_threads;
+ g_thread_all_threads = result;
+ }
+ G_UNLOCK (g_thread);
+
+ if (local_error)
+ {
+ g_propagate_error (error, local_error);
+ g_free (result);
+ return NULL;
+ }
+
+ return (GThread*) result;
+}
+
+EXPORT_C void
+g_thread_exit (gpointer retval)
+{
+ GRealThread* real = (GRealThread*) g_thread_self ();
+ real->retval = retval;
+ G_THREAD_CF (thread_exit, (void)0, ());
+}
+
+EXPORT_C gpointer
+g_thread_join (GThread* thread)
+{
+ GRealThread* real = (GRealThread*) thread;
+ GRealThread *p, *t;
+ gpointer retval;
+
+ g_return_val_if_fail (thread, NULL);
+ g_return_val_if_fail (thread->joinable, NULL);
+ g_return_val_if_fail (!g_system_thread_equal (real->system_thread,
+ zero_thread), NULL);
+
+ G_THREAD_UF (thread_join, (&real->system_thread));
+
+ retval = real->retval;
+
+ G_LOCK (g_thread);
+ for (t = g_thread_all_threads, p = NULL; t; p = t, t = t->next)
+ {
+ if (t == (GRealThread*) thread)
+ {
+ if (p)
+ p->next = t->next;
+ else
+ g_thread_all_threads = t->next;
+ break;
+ }
+ }
+ G_UNLOCK (g_thread);
+
+ /* Just to make sure, this isn't used any more */
+ thread->joinable = 0;
+ g_system_thread_assign (real->system_thread, zero_thread);
+
+ /* the thread structure for non-joinable threads is freed upon
+ thread end. We free the memory here. This will leave a loose end,
+ if a joinable thread is not joined. */
+
+ g_free (thread);
+
+ return retval;
+}
+
+EXPORT_C void
+g_thread_set_priority (GThread* thread,
+ GThreadPriority priority)
+{
+ GRealThread* real = (GRealThread*) thread;
+
+ g_return_if_fail (thread);
+ g_return_if_fail (!g_system_thread_equal (real->system_thread, zero_thread));
+ g_return_if_fail (priority >= G_THREAD_PRIORITY_LOW);
+ g_return_if_fail (priority <= G_THREAD_PRIORITY_URGENT);
+
+ thread->priority = priority;
+
+ G_THREAD_CF (thread_set_priority, (void)0,
+ (&real->system_thread, priority));
+}
+
+EXPORT_C GThread*
+g_thread_self (void)
+{
+ GRealThread* thread = g_private_get (g_thread_specific_private);
+
+ if (!thread)
+ {
+ /* If no thread data is available, provide and set one. This
+ can happen for the main thread and for threads, that are not
+ created by GLib. */
+ thread = g_new0 (GRealThread, 1);
+ thread->thread.joinable = FALSE; /* This is a save guess */
+ thread->thread.priority = G_THREAD_PRIORITY_NORMAL; /* This is
+ just a guess */
+ thread->thread.func = NULL;
+ thread->thread.data = NULL;
+ thread->private_data = NULL;
+
+ if (g_thread_supported ())
+ G_THREAD_UF (thread_self, (&thread->system_thread));
+
+ g_private_set (g_thread_specific_private, thread);
+
+ G_LOCK (g_thread);
+ thread->next = g_thread_all_threads;
+ g_thread_all_threads = thread;
+ G_UNLOCK (g_thread);
+ }
+
+ return (GThread*)thread;
+}
+
+EXPORT_C void
+g_static_rw_lock_init (GStaticRWLock* lock)
+{
+ static const GStaticRWLock init_lock = G_STATIC_RW_LOCK_INIT;
+
+ g_return_if_fail (lock);
+
+ *lock = init_lock;
+}
+
+inline static void
+g_static_rw_lock_wait (GCond** cond, GStaticMutex* mutex)
+{
+ if (!*cond)
+ *cond = g_cond_new ();
+ g_cond_wait (*cond, g_static_mutex_get_mutex (mutex));
+}
+
+inline static void
+g_static_rw_lock_signal (GStaticRWLock* lock)
+{
+ if (lock->want_to_write && lock->write_cond)
+ g_cond_signal (lock->write_cond);
+ else if (lock->want_to_read && lock->read_cond)
+ g_cond_broadcast (lock->read_cond);
+}
+
+EXPORT_C void
+g_static_rw_lock_reader_lock (GStaticRWLock* lock)
+{
+ g_return_if_fail (lock);
+
+ if (!g_threads_got_initialized)
+ return;
+
+ g_static_mutex_lock (&lock->mutex);
+ lock->want_to_read++;
+ while (lock->have_writer || lock->want_to_write)
+ g_static_rw_lock_wait (&lock->read_cond, &lock->mutex);
+ lock->want_to_read--;
+ lock->read_counter++;
+ g_static_mutex_unlock (&lock->mutex);
+}
+
+EXPORT_C gboolean
+g_static_rw_lock_reader_trylock (GStaticRWLock* lock)
+{
+ gboolean ret_val = FALSE;
+
+ g_return_val_if_fail (lock, FALSE);
+
+ if (!g_threads_got_initialized)
+ return TRUE;
+
+ g_static_mutex_lock (&lock->mutex);
+ if (!lock->have_writer && !lock->want_to_write)
+ {
+ lock->read_counter++;
+ ret_val = TRUE;
+ }
+ g_static_mutex_unlock (&lock->mutex);
+ return ret_val;
+}
+
+EXPORT_C void
+g_static_rw_lock_reader_unlock (GStaticRWLock* lock)
+{
+ g_return_if_fail (lock);
+
+ if (!g_threads_got_initialized)
+ return;
+
+ g_static_mutex_lock (&lock->mutex);
+ lock->read_counter--;
+ if (lock->read_counter == 0)
+ g_static_rw_lock_signal (lock);
+ g_static_mutex_unlock (&lock->mutex);
+}
+
+EXPORT_C void
+g_static_rw_lock_writer_lock (GStaticRWLock* lock)
+{
+ g_return_if_fail (lock);
+
+ if (!g_threads_got_initialized)
+ return;
+
+ g_static_mutex_lock (&lock->mutex);
+ lock->want_to_write++;
+ while (lock->have_writer || lock->read_counter)
+ g_static_rw_lock_wait (&lock->write_cond, &lock->mutex);
+ lock->want_to_write--;
+ lock->have_writer = TRUE;
+ g_static_mutex_unlock (&lock->mutex);
+}
+
+EXPORT_C gboolean
+g_static_rw_lock_writer_trylock (GStaticRWLock* lock)
+{
+ gboolean ret_val = FALSE;
+
+ g_return_val_if_fail (lock, FALSE);
+
+ if (!g_threads_got_initialized)
+ return TRUE;
+
+ g_static_mutex_lock (&lock->mutex);
+ if (!lock->have_writer && !lock->read_counter)
+ {
+ lock->have_writer = TRUE;
+ ret_val = TRUE;
+ }
+ g_static_mutex_unlock (&lock->mutex);
+ return ret_val;
+}
+
+EXPORT_C void
+g_static_rw_lock_writer_unlock (GStaticRWLock* lock)
+{
+ g_return_if_fail (lock);
+
+ if (!g_threads_got_initialized)
+ return;
+
+ g_static_mutex_lock (&lock->mutex);
+ lock->have_writer = FALSE;
+ g_static_rw_lock_signal (lock);
+ g_static_mutex_unlock (&lock->mutex);
+}
+
+EXPORT_C void
+g_static_rw_lock_free (GStaticRWLock* lock)
+{
+ g_return_if_fail (lock);
+
+ if (lock->read_cond)
+ {
+ g_cond_free (lock->read_cond);
+ lock->read_cond = NULL;
+ }
+ if (lock->write_cond)
+ {
+ g_cond_free (lock->write_cond);
+ lock->write_cond = NULL;
+ }
+ g_static_mutex_free (&lock->mutex);
+}
+
+/**
+ * g_thread_foreach
+ * @thread_func: function to call for all GThread structures
+ * @user_data: second argument to @thread_func
+ *
+ * Call @thread_func on all existing #GThread structures. Note that
+ * threads may decide to exit while @thread_func is running, so
+ * without intimate knowledge about the lifetime of foreign threads,
+ * @thread_func shouldn't access the GThread* pointer passed in as
+ * first argument. However, @thread_func will not be called for threads
+ * which are known to have exited already.
+ *
+ * Due to thread lifetime checks, this function has an execution complexity
+ * which is quadratic in the number of existing threads.
+ *
+ * Since: 2.10
+ */
+EXPORT_C void
+g_thread_foreach (GFunc thread_func,
+ gpointer user_data)
+{
+ GSList *slist = NULL;
+ GRealThread *thread;
+ g_return_if_fail (thread_func != NULL);
+ /* snapshot the list of threads for iteration */
+ G_LOCK (g_thread);
+ for (thread = g_thread_all_threads; thread; thread = thread->next)
+ slist = g_slist_prepend (slist, thread);
+ G_UNLOCK (g_thread);
+ /* walk the list, skipping non-existant threads */
+ while (slist)
+ {
+ GSList *node = slist;
+ slist = node->next;
+ /* check whether the current thread still exists */
+ G_LOCK (g_thread);
+ for (thread = g_thread_all_threads; thread; thread = thread->next)
+ if (thread == node->data)
+ break;
+ G_UNLOCK (g_thread);
+ if (thread)
+ thread_func (thread, user_data);
+ g_slist_free_1 (node);
+ }
+}
+
+/**
+ * g_thread_get_initialized
+ *
+ * Indicates if g_thread_init() has been called.
+ *
+ * Returns: %TRUE if threads have been initialized.
+ *
+ * Since: 2.20
+ */
+EXPORT_C gboolean
+g_thread_get_initialized ()
+{
+ return g_thread_supported ();
+}
+
+#define __G_THREAD_C__
+#include "galiasdef.c"