* 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
*/
+/* 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 "glib.h"
-#include "gthreadinit.h"
#include "galias.h"
-#if GLIB_SIZEOF_SYSTEM_THREAD == SIZEOF_VOID_P
-# define g_system_thread_equal_simple(thread1, thread2) \
- ((thread1).dummy_pointer == (thread2).dummy_pointer)
-# define g_system_thread_assign(dest, src) \
- ((dest).dummy_pointer = (src).dummy_pointer)
-#else /* GLIB_SIZEOF_SYSTEM_THREAD != SIZEOF_VOID_P */
-# define g_system_thread_equal_simple(thread1, thread2) \
- (memcmp (&(thread1), &(thread2), GLIB_SIZEOF_SYSTEM_THREAD) == 0)
-# define g_system_thread_assign(dest, src) \
- (memcpy (&(dest), &(src), GLIB_SIZEOF_SYSTEM_THREAD))
-#endif /* GLIB_SIZEOF_SYSTEM_THREAD == SIZEOF_VOID_P */
-
-#define g_system_thread_equal(thread1, thread2) \
- (g_thread_functions_for_glib_use.thread_equal ? \
- g_thread_functions_for_glib_use.thread_equal (&(thread1), &(thread2)) :\
- g_system_thread_equal_simple((thread1), (thread2)))
-
-GQuark
+GQuark
g_thread_error_quark (void)
{
- static GQuark quark;
- if (!quark)
- quark = g_quark_from_static_string ("g_thread_error");
- return quark;
+ return g_quark_from_static_string ("g_thread_error");
}
/* Keep this in sync with GRealThread in gmain.c! */
{
GThread thread;
gpointer private_data;
- gpointer mem_private;
GRealThread *next;
gpointer retval;
GSystemThread system_thread;
GDestroyNotify destroy;
};
-static void g_thread_cleanup (gpointer data);
-static void g_thread_fail (void);
+static void g_thread_cleanup (gpointer data);
+static void g_thread_fail (void);
+static guint64 gettime (void);
+
+guint64 (*g_thread_gettime) (void) = gettime;
/* Global variables */
(GPrivate*(*)(GDestroyNotify))g_thread_fail, /* private_new */
NULL, /* private_get */
NULL, /* private_set */
- (void(*)(GThreadFunc, gpointer, gulong,
- gboolean, gboolean, GThreadPriority,
+ (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_self */
+ NULL /* thread_equal */
+};
/* Local data */
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);
/* This must be called only once, before any threads are created.
* It will only be called from g_thread_init() in -lgthread.
*/
-void
+void
g_thread_init_glib (void)
{
/* We let the main thread (the one that calls g_thread_init) inherit
*/
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 ();
- _g_convert_thread_init ();
- _g_rand_thread_init ();
- _g_main_thread_init ();
- _g_mem_thread_init ();
- _g_messages_thread_init ();
- _g_atomic_thread_init ();
- _g_utils_thread_init ();
-#ifdef G_OS_WIN32
- _g_win32_thread_init ();
-#endif
+ /* 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));
- _g_mem_thread_private_init ();
- _g_messages_thread_private_init ();
+ /* 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
+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
+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 ((void**) 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;
+}
+
+void
+g_once_init_leave (volatile gsize *value_location,
+ gsize initialization_value)
+{
+ g_return_if_fail (g_atomic_pointer_get ((void**) 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);
+}
+
+void
g_static_mutex_init (GStaticMutex *mutex)
{
static const GStaticMutex init_mutex = G_STATIC_MUTEX_INIT;
g_mutex_lock (g_once_mutex);
- if (!(*mutex))
- {
- GMutex *new_mutex = g_mutex_new ();
-
- /* The following is a memory barrier to avoid the write
- * to *new_mutex being reordered to after writing *mutex */
- g_mutex_lock (new_mutex);
- g_mutex_unlock (new_mutex);
-
- *mutex = new_mutex;
- }
+ if (!(*mutex))
+ g_atomic_pointer_set ((void**) mutex, g_mutex_new());
g_mutex_unlock (g_once_mutex);
-
+
return *mutex;
}
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 */
+ * 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;
}
-void
+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;
return;
}
g_system_thread_assign (mutex->owner, zero_thread);
- g_static_mutex_unlock (&mutex->mutex);
+ g_static_mutex_unlock (&mutex->mutex);
}
void
mutex->depth = depth;
}
-guint
+guint
g_static_rec_mutex_unlock_full (GStaticRecMutex *mutex)
{
guint depth;
g_static_mutex_free (&mutex->mutex);
}
-void
+void
g_static_private_init (GStaticPrivate *private_key)
{
private_key->index = 0;
if (!private_key->index)
return NULL;
else if (private_key->index <= array->len)
- return g_array_index (array, GStaticPrivateNode,
+ return g_array_index (array, GStaticPrivateNode,
private_key->index - 1).data;
else
return NULL;
}
void
-g_static_private_set (GStaticPrivate *private_key,
+g_static_private_set (GStaticPrivate *private_key,
gpointer data,
GDestroyNotify notify)
{
{
if (g_thread_free_indeces)
{
- private_key->index =
+ private_key->index =
GPOINTER_TO_UINT (g_thread_free_indeces->data);
- g_thread_free_indeces =
+ g_thread_free_indeces =
g_slist_delete_link (g_thread_free_indeces,
g_thread_free_indeces);
}
}
}
-void
+void
g_static_private_free (GStaticPrivate *private_key)
{
guint index = private_key->index;
if (!index)
return;
-
+
private_key->index = 0;
G_LOCK (g_thread);
-
+
thread = g_thread_all_threads;
while (thread)
{
if (array && index <= array->len)
{
- GStaticPrivateNode *node = &g_array_index (array,
- GStaticPrivateNode,
+ 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)
+ if (ddestroy)
{
G_UNLOCK (g_thread);
ddestroy (ddata);
}
}
}
- g_thread_free_indeces = g_slist_prepend (g_thread_free_indeces,
+ g_thread_free_indeces = g_slist_prepend (g_thread_free_indeces,
GUINT_TO_POINTER (index));
G_UNLOCK (g_thread);
}
{
GArray* array = thread->private_data;
guint i;
-
+
for (i = 0; i < array->len; i++ )
{
- GStaticPrivateNode *node =
+ GStaticPrivateNode *node =
&g_array_index (array, GStaticPrivateNode, i);
if (node->destroy)
node->destroy (node->data);
}
}
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);
+ g_free (thread);
}
}
}
g_error ("The thread system is not yet initialized.");
}
+#define G_NSEC_PER_SEC 1000000000
+
+static guint64
+gettime (void)
+{
+#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)
{
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*
+GThread*
g_thread_create_full (GThreadFunc func,
gpointer data,
gulong stack_size,
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;
+ result->private_data = NULL;
G_LOCK (g_thread);
- G_THREAD_UF (thread_create, (g_thread_create_proxy, result,
+ 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;
+ if (!local_error)
+ {
+ result->next = g_thread_all_threads;
+ g_thread_all_threads = result;
+ }
G_UNLOCK (g_thread);
if (local_error)
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,
+ g_return_val_if_fail (!g_system_thread_equal (real->system_thread,
zero_thread), NULL);
G_THREAD_UF (thread_join, (&real->system_thread));
}
void
-g_thread_set_priority (GThread* thread,
+g_thread_set_priority (GThread* thread,
GThreadPriority priority)
{
GRealThread* real = (GRealThread*) thread;
thread->priority = priority;
- G_THREAD_CF (thread_set_priority, (void)0,
+ G_THREAD_CF (thread_set_priority, (void)0,
(&real->system_thread, priority));
}
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. */
if (g_thread_supported ())
G_THREAD_UF (thread_self, (&thread->system_thread));
- g_private_set (g_thread_specific_private, 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;
}
*lock = init_lock;
}
-static void inline
+inline static void
g_static_rw_lock_wait (GCond** cond, GStaticMutex* mutex)
{
if (!*cond)
g_cond_wait (*cond, g_static_mutex_get_mutex (mutex));
}
-static void inline
+inline static void
g_static_rw_lock_signal (GStaticRWLock* lock)
{
if (lock->want_to_write && lock->write_cond)
g_cond_broadcast (lock->read_cond);
}
-void
+void
g_static_rw_lock_reader_lock (GStaticRWLock* lock)
{
g_return_if_fail (lock);
g_static_mutex_lock (&lock->mutex);
lock->want_to_read++;
- while (lock->have_writer || lock->want_to_write)
+ 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
+gboolean
g_static_rw_lock_reader_trylock (GStaticRWLock* lock)
{
gboolean ret_val = FALSE;
return ret_val;
}
-void
+void
g_static_rw_lock_reader_unlock (GStaticRWLock* lock)
{
g_return_if_fail (lock);
g_static_mutex_unlock (&lock->mutex);
}
-void
+void
g_static_rw_lock_writer_lock (GStaticRWLock* lock)
{
g_return_if_fail (lock);
g_static_mutex_unlock (&lock->mutex);
}
-gboolean
+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;
return ret_val;
}
-void
+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;
+ lock->have_writer = FALSE;
g_static_rw_lock_signal (lock);
g_static_mutex_unlock (&lock->mutex);
}
-void
+void
g_static_rw_lock_free (GStaticRWLock* lock)
{
g_return_if_fail (lock);
-
+
if (lock->read_cond)
{
g_cond_free (lock->read_cond);
g_static_mutex_free (&lock->mutex);
}
-/*
- * Memory allocation can't use the regular GPrivate
- * API, since that relies on GArray, which uses
- * chunked memory.
- */
-gpointer
-_g_thread_mem_private_get (GThread *thread)
-{
- GRealThread *real_thread = (GRealThread*) thread;
-
- return real_thread->mem_private;
-}
-
-void
-_g_thread_mem_private_set (GThread *thread,
- gpointer data)
-{
- GRealThread *real_thread = (GRealThread*) thread;
-
- real_thread->mem_private = data;
-}
-
/**
* g_thread_foreach
* @thread_func: function to call for all GThread structures
projects / platform / upstream / glib.git / blobdiff