| /* 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 |
| * |
| * 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 |
| */ |
| |
| #include "config.h" |
| |
| #ifdef HAVE_UNISTD_H |
| #include <unistd.h> |
| #endif |
| |
| #include <string.h> |
| |
| #include "glib.h" |
| #include "gthreadprivate.h" |
| #include "galias.h" |
| |
| 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); |
| |
| /* Global variables */ |
| |
| static GSystemThread zero_thread; /* This is initialized to all zero */ |
| 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 */ |
| }; |
| |
| /* Local data */ |
| |
| 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; |
| |
| G_LOCK_DEFINE_STATIC (g_thread); |
| |
| #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. |
| */ |
| 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 */ |
| |
| 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; |
| } |
| |
| void |
| g_static_mutex_init (GStaticMutex *mutex) |
| { |
| static const GStaticMutex init_mutex = G_STATIC_MUTEX_INIT; |
| |
| g_return_if_fail (mutex); |
| |
| *mutex = init_mutex; |
| } |
| |
| 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; |
| } |
| |
| 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 */ |
| runtime_mutex = ((GMutex**)mutex); |
| |
| if (*runtime_mutex) |
| g_mutex_free (*runtime_mutex); |
| |
| *runtime_mutex = NULL; |
| } |
| |
| 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; |
| } |
| |
| 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; |
| } |
| |
| 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; |
| } |
| |
| 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); |
| } |
| |
| 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; |
| } |
| |
| 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; |
| } |
| |
| void |
| g_static_rec_mutex_free (GStaticRecMutex *mutex) |
| { |
| g_return_if_fail (mutex); |
| |
| g_static_mutex_free (&mutex->mutex); |
| } |
| |
| void |
| g_static_private_init (GStaticPrivate *private_key) |
| { |
| private_key->index = 0; |
| } |
| |
| 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; |
| } |
| |
| void |
| g_static_private_set (GStaticPrivate *private_key, |
| gpointer data, |
| GDestroyNotify notify) |
| { |
| GRealThread *self = (GRealThread*) g_thread_self (); |
| GArray *array; |
| static guint next_index = 0; |
| 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; |
| } |
| } |
| |
| void |
| g_static_private_free (GStaticPrivate *private_key) |
| { |
| guint index = private_key->index; |
| GRealThread *thread; |
| |
| if (!index) |
| 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 && index <= array->len) |
| { |
| GStaticPrivateNode *node = &g_array_index (array, |
| GStaticPrivateNode, |
| index - 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 (index)); |
| 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."); |
| } |
| |
| 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; |
| } |
| |
| 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)); |
| 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; |
| } |
| |
| void |
| g_thread_exit (gpointer retval) |
| { |
| GRealThread* real = (GRealThread*) g_thread_self (); |
| real->retval = retval; |
| G_THREAD_CF (thread_exit, (void)0, ()); |
| } |
| |
| 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; |
| } |
| |
| 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)); |
| } |
| |
| 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; |
| } |
| |
| 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); |
| } |
| |
| 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); |
| } |
| |
| 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; |
| } |
| |
| 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); |
| } |
| |
| 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); |
| } |
| |
| 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; |
| } |
| |
| 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); |
| } |
| |
| 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 |
| */ |
| 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); |
| } |
| } |
| |
| #define __G_THREAD_C__ |
| #include "galiasdef.c" |