* 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.
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
/*
* 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/.
*/
-/*
+/*
* MT safe
*/
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
+#include "config.h"
#include <glib.h>
-#ifdef G_THREADS_ENABLED
-
-static gboolean thread_system_already_initialized = FALSE;
-static gint g_thread_priority_map [G_THREAD_PRIORITY_URGENT + 1];
-
-#include G_THREAD_SOURCE
-
-#ifndef PRIORITY_LOW_VALUE
-# define PRIORITY_LOW_VALUE 0
-#endif
-
-#ifndef PRIORITY_URGENT_VALUE
-# define PRIORITY_URGENT_VALUE 0
-#endif
-
-#ifndef PRIORITY_NORMAL_VALUE
-# define PRIORITY_NORMAL_VALUE \
- (PRIORITY_LOW_VALUE + (PRIORITY_URGENT_VALUE - PRIORITY_LOW_VALUE) * 4 / 10)
-#endif /* PRIORITY_NORMAL_VALUE */
-
-#ifndef PRIORITY_HIGH_VALUE
-# define PRIORITY_HIGH_VALUE \
- (PRIORITY_LOW_VALUE + (PRIORITY_URGENT_VALUE - PRIORITY_LOW_VALUE) * 8 / 10)
-#endif /* PRIORITY_HIGH_VALUE */
-
-void g_mutex_init (void);
-void g_mem_init (void);
-void g_messages_init (void);
-
-#define G_MUTEX_DEBUG_INFO(mutex) (*((gpointer*)(((char*)mutex)+G_MUTEX_SIZE)))
-
-typedef struct _ErrorCheckInfo ErrorCheckInfo;
-struct _ErrorCheckInfo
-{
- gchar *location;
- GThread *owner;
-};
-
-static GMutex *
-g_mutex_new_errorcheck_impl (void)
-{
- GMutex *retval = g_thread_functions_for_glib_use_default.mutex_new ();
- retval = g_realloc (retval, G_MUTEX_SIZE + sizeof (gpointer));
- G_MUTEX_DEBUG_INFO (retval) = NULL;
- return retval;
-}
-
-static void
-g_mutex_lock_errorcheck_impl (GMutex *mutex,
- gulong magic,
- gchar *location)
-{
- ErrorCheckInfo *info;
- GThread *self = g_thread_self ();
-
- if (magic != G_MUTEX_DEBUG_MAGIC)
- location = "unknown";
-
- if (G_MUTEX_DEBUG_INFO (mutex) == NULL)
- {
- /* if the debug info is NULL, we have not yet locked that mutex,
- * so we do it now */
- g_thread_functions_for_glib_use_default.mutex_lock (mutex);
- /* Now we have to check again, because another thread might have
- * tried to lock the mutex at the same time we did. This
- * technique is not 100% save on systems without decent cache
- * coherence, but we have no choice */
- if (G_MUTEX_DEBUG_INFO (mutex) == NULL)
- {
- info = G_MUTEX_DEBUG_INFO (mutex) = g_new0 (ErrorCheckInfo, 1);
- }
- g_thread_functions_for_glib_use_default.mutex_unlock (mutex);
- }
-
- info = G_MUTEX_DEBUG_INFO (mutex);
- if (info->owner == self)
- g_error ("Trying to recursivly lock a mutex at '%s', "
- "previously locked at '%s'",
- location, info->location);
-
- g_thread_functions_for_glib_use_default.mutex_lock (mutex);
-
- info->owner = self;
- info->location = location;
-}
-
-static gboolean
-g_mutex_trylock_errorcheck_impl (GMutex *mutex,
- gulong magic,
- gchar *location)
-{
- ErrorCheckInfo *info = G_MUTEX_DEBUG_INFO (mutex);
- GThread *self = g_thread_self ();
-
- if (magic != G_MUTEX_DEBUG_MAGIC)
- location = "unknown";
-
- if (!info)
- {
- /* This mutex has not yet been used, so simply lock and return TRUE */
- g_mutex_lock_errorcheck_impl (mutex, magic, location);
- return TRUE;
- }
-
- if (info->owner == self)
- g_error ("Trying to recursivly lock a mutex at '%s', "
- "previously locked at '%s'",
- location, info->location);
-
- if (!g_thread_functions_for_glib_use_default.mutex_trylock (mutex))
- return FALSE;
-
- info->owner = self;
- info->location = location;
-
- return TRUE;
-}
-
-static void
-g_mutex_unlock_errorcheck_impl (GMutex *mutex,
- gulong magic,
- gchar *location)
-{
- ErrorCheckInfo *info = G_MUTEX_DEBUG_INFO (mutex);
- GThread *self = g_thread_self ();
-
- if (magic != G_MUTEX_DEBUG_MAGIC)
- location = "unknown";
-
- if (!info || info->owner == NULL)
- g_error ("Trying to unlock an unlocked mutex at '%s'", location);
-
- if (info->owner != self)
- g_warning ("Trying to unlock a mutex at '%s', "
- "previously locked by a different thread at '%s'",
- location, info->location);
-
- info->owner = NULL;
- info->location = NULL;
-
- g_thread_functions_for_glib_use_default.mutex_unlock (mutex);
-}
-
-static void
-g_mutex_free_errorcheck_impl (GMutex *mutex,
- gulong magic,
- gchar *location)
-{
- ErrorCheckInfo *info = G_MUTEX_DEBUG_INFO (mutex);
-
- if (magic != G_MUTEX_DEBUG_MAGIC)
- location = "unknown";
-
- if (info && info->owner != NULL)
- g_error ("Trying to free a locked mutex at '%s', "
- "which was previously locked at '%s'",
- location, info->location);
-
- g_free (G_MUTEX_DEBUG_INFO (mutex));
- g_thread_functions_for_glib_use_default.mutex_free (mutex);
-}
-
-static void
-g_cond_wait_errorcheck_impl (GCond *cond,
- GMutex *mutex,
- gulong magic,
- gchar *location)
-{
-
- ErrorCheckInfo *info = G_MUTEX_DEBUG_INFO (mutex);
- GThread *self = g_thread_self ();
-
- if (magic != G_MUTEX_DEBUG_MAGIC)
- location = "unknown";
-
- if (!info || info->owner == NULL)
- g_error ("Trying to use an unlocked mutex in g_cond_wait() at '%s'",
- location);
-
- if (info->owner != self)
- g_error ("Trying to use a mutex locked by another thread in "
- "g_cond_wait() at '%s'", location);
-
- info->owner = NULL;
- location = info->location;
-
- g_thread_functions_for_glib_use_default.cond_wait (cond, mutex);
-
- info->owner = self;
- info->location = location;
-}
-
-
-static gboolean
-g_cond_timed_wait_errorcheck_impl (GCond *cond,
- GMutex *mutex,
- GTimeVal *end_time,
- gulong magic,
- gchar *location)
-{
- ErrorCheckInfo *info = G_MUTEX_DEBUG_INFO (mutex);
- GThread *self = g_thread_self ();
- gboolean retval;
-
- if (magic != G_MUTEX_DEBUG_MAGIC)
- location = "unknown";
-
- if (!info || info->owner == NULL)
- g_error ("Trying to use an unlocked mutex in g_cond_timed_wait() at '%s'",
- location);
-
- if (info->owner != self)
- g_error ("Trying to use a mutex locked by another thread in "
- "g_cond_timed_wait() at '%s'", location);
-
- info->owner = NULL;
- location = info->location;
-
- retval = g_thread_functions_for_glib_use_default.cond_timed_wait (cond,
- mutex,
- end_time);
-
- info->owner = self;
- info->location = location;
-
- return retval;
-}
-
-
-/* unshadow function declaration. See gthread.h */
-#undef g_thread_init
-
-void
-g_thread_init_with_errorcheck_mutexes (GThreadFunctions* init)
-{
- GThreadFunctions errorcheck_functions;
- if (init)
- g_error ("Errorcheck mutexes can only be used for native "
- "thread implementations. Sorry." );
-
-#ifdef HAVE_G_THREAD_IMPL_INIT
- /* This isn't called in g_thread_init, as it doesn't think to get
- * the default implementation, so we have to call it on our own.
- *
- * We must call this before copying
- * g_thread_functions_for_glib_use_default as the
- * implementation-specific init function might modify the contents
- * of g_thread_functions_for_glib_use_default based on operating
- * system version, C library version, or whatever. */
- g_thread_impl_init();
-#endif /* HAVE_G_THREAD_IMPL_INIT */
-
- errorcheck_functions = g_thread_functions_for_glib_use_default;
- errorcheck_functions.mutex_new = g_mutex_new_errorcheck_impl;
- errorcheck_functions.mutex_lock =
- (void (*)(GMutex *)) g_mutex_lock_errorcheck_impl;
- errorcheck_functions.mutex_trylock =
- (gboolean (*)(GMutex *)) g_mutex_trylock_errorcheck_impl;
- errorcheck_functions.mutex_unlock =
- (void (*)(GMutex *)) g_mutex_unlock_errorcheck_impl;
- errorcheck_functions.mutex_free =
- (void (*)(GMutex *)) g_mutex_free_errorcheck_impl;
- errorcheck_functions.cond_wait =
- (void (*)(GCond *, GMutex *)) g_cond_wait_errorcheck_impl;
- errorcheck_functions.cond_timed_wait =
- (gboolean (*)(GCond *, GMutex *, GTimeVal *))
- g_cond_timed_wait_errorcheck_impl;
-
- g_thread_init (&errorcheck_functions);
-}
-
void
-g_thread_init (GThreadFunctions* init)
+g_thread_init (gpointer init)
{
- gboolean supported;
-
- if (thread_system_already_initialized)
- g_error ("GThread system may only be initialized once.");
-
- thread_system_already_initialized = TRUE;
-
- if (init == NULL)
- {
-#ifdef HAVE_G_THREAD_IMPL_INIT
- /* now do any initialization stuff required by the
- * implementation, but only if called with a NULL argument, of
- * course. Otherwise it's up to the user to do so. */
- g_thread_impl_init();
-#endif /* HAVE_G_THREAD_IMPL_INIT */
- init = &g_thread_functions_for_glib_use_default;
- }
- else
- g_thread_use_default_impl = FALSE;
-
- g_thread_functions_for_glib_use = *init;
-
- /* It is important, that g_threads_got_initialized is not set before the
- * thread initialization functions of the different modules are called
- */
- supported = (init->mutex_new &&
- init->mutex_lock &&
- init->mutex_trylock &&
- init->mutex_unlock &&
- init->mutex_free &&
- init->cond_new &&
- init->cond_signal &&
- init->cond_broadcast &&
- init->cond_wait &&
- init->cond_timed_wait &&
- init->cond_free &&
- init->private_new &&
- init->private_get &&
- init->private_get &&
- init->thread_create &&
- init->thread_yield &&
- init->thread_join &&
- init->thread_exit &&
- init->thread_set_priority &&
- init->thread_self);
-
- /* if somebody is calling g_thread_init (), it means that he wants to
- * have thread support, so check this
- */
- if (!supported)
- {
- if (g_thread_use_default_impl)
- g_error ("Threads are not supported on this platform.");
- else
- g_error ("The supplied thread function vector is invalid.");
- }
-
- g_thread_priority_map [G_THREAD_PRIORITY_LOW] = PRIORITY_LOW_VALUE;
- g_thread_priority_map [G_THREAD_PRIORITY_NORMAL] = PRIORITY_NORMAL_VALUE;
- g_thread_priority_map [G_THREAD_PRIORITY_HIGH] = PRIORITY_HIGH_VALUE;
- g_thread_priority_map [G_THREAD_PRIORITY_URGENT] = PRIORITY_URGENT_VALUE;
-
- /* now call the thread initialization functions of the different
- * glib modules. order does matter, g_mutex_init MUST come first.
- */
- g_mutex_init ();
- g_mem_init ();
- g_messages_init ();
-
- /* now we can set g_threads_got_initialized and thus enable
- * all the thread functions
- */
- g_threads_got_initialized = TRUE;
-
- /* we want the main thread to run with normal priority */
- g_thread_set_priority (g_thread_self(), G_THREAD_PRIORITY_NORMAL);
+ if (init != NULL)
+ g_warning ("GThread system no longer supports custom thread implementations.");
}
-#else /* !G_THREADS_ENABLED */
-
void
-g_thread_init (GThreadFunctions* init)
+g_thread_init_with_errorcheck_mutexes (gpointer vtable)
{
- g_error ("GLib thread support is disabled.");
+ g_assert (vtable == NULL);
+ g_warning ("GThread system no longer supports errorcheck mutexes.");
}
-
-#endif /* !G_THREADS_ENABLED */
projects / platform / upstream / glib.git / blobdiff