#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
# define __gthrw(name) \
- extern __typeof(name) __gthrw_ ## name __attribute__ ((__weakref__(#name)))
+ static __typeof(name) __gthrw_ ## name __attribute__ ((__weakref__(#name)));
+# define __gthrw_(name) __gthrw_ ## name
#else
-# define __gthrw_asmname(cname) __gthrw_asmnamep (__USER_LABEL_PREFIX__, cname)
-# define __gthrw_asmnamep(prefix, cname) __gthrw_string (prefix) cname
-# define __gthrw_string(x) #x
-# define __gthrw(name) \
- extern __typeof(name) __gthrw_ ## name __asm (__gthrw_asmname (#name))
+# define __gthrw(name)
+# define __gthrw_(name) name
#endif
-__gthrw(pthread_once);
-__gthrw(pthread_key_create);
-__gthrw(pthread_key_delete);
-__gthrw(pthread_getspecific);
-__gthrw(pthread_setspecific);
-__gthrw(pthread_create);
-__gthrw(pthread_cancel);
-__gthrw(pthread_self);
+__gthrw(pthread_once)
+__gthrw(pthread_key_create)
+__gthrw(pthread_key_delete)
+__gthrw(pthread_getspecific)
+__gthrw(pthread_setspecific)
+__gthrw(pthread_create)
+__gthrw(pthread_cancel)
+__gthrw(pthread_self)
-__gthrw(pthread_mutex_lock);
-__gthrw(pthread_mutex_trylock);
-__gthrw(pthread_mutex_unlock);
-__gthrw(pthread_mutexattr_init);
-__gthrw(pthread_mutexattr_settype);
-__gthrw(pthread_mutexattr_destroy);
+__gthrw(pthread_mutex_lock)
+__gthrw(pthread_mutex_trylock)
+__gthrw(pthread_mutex_unlock)
+__gthrw(pthread_mutexattr_init)
+__gthrw(pthread_mutexattr_destroy)
-__gthrw(pthread_mutex_init);
+__gthrw(pthread_mutex_init)
#if defined(_LIBOBJC) || defined(_LIBOBJC_WEAK)
/* Objective-C. */
-__gthrw(pthread_cond_broadcast);
-__gthrw(pthread_cond_destroy);
-__gthrw(pthread_cond_init);
-__gthrw(pthread_cond_signal);
-__gthrw(pthread_cond_wait);
-__gthrw(pthread_exit);
-__gthrw(pthread_mutex_destroy);
-__gthrw(pthread_self);
+__gthrw(pthread_cond_broadcast)
+__gthrw(pthread_cond_destroy)
+__gthrw(pthread_cond_init)
+__gthrw(pthread_cond_signal)
+__gthrw(pthread_cond_wait)
+__gthrw(pthread_exit)
+__gthrw(pthread_mutex_destroy)
#ifdef _POSIX_PRIORITY_SCHEDULING
#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
-__gthrw(sched_get_priority_max);
-__gthrw(sched_get_priority_min);
+__gthrw(sched_get_priority_max)
+__gthrw(sched_get_priority_min)
#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
#endif /* _POSIX_PRIORITY_SCHEDULING */
-__gthrw(sched_yield);
-__gthrw(pthread_attr_destroy);
-__gthrw(pthread_attr_init);
-__gthrw(pthread_attr_setdetachstate);
+__gthrw(sched_yield)
+__gthrw(pthread_attr_destroy)
+__gthrw(pthread_attr_init)
+__gthrw(pthread_attr_setdetachstate)
#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
-__gthrw(pthread_getschedparam);
-__gthrw(pthread_setschedparam);
+__gthrw(pthread_getschedparam)
+__gthrw(pthread_setschedparam)
#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
#endif /* _LIBOBJC || _LIBOBJC_WEAK */
#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
+/* On Solaris 2.6 up to 9, the libc exposes a POSIX threads interface even if
+ -pthreads is not specified. The functions are dummies and most return an
+ error value. However pthread_once returns 0 without invoking the routine
+ it is passed so we cannot pretend that the interface is active if -pthreads
+ is not specified. On Solaris 2.5.1, the interface is not exposed at all so
+ we need to play the usual game with weak symbols. On Solaris 10 and up, a
+ working interface is always exposed. */
+
+#if defined(__sun) && defined(__svr4__)
+
+static volatile int __gthread_active = -1;
+
+static void
+__gthread_trigger (void)
+{
+ __gthread_active = 1;
+}
+
+static inline int
+__gthread_active_p (void)
+{
+ static pthread_mutex_t __gthread_active_mutex = PTHREAD_MUTEX_INITIALIZER;
+ static pthread_once_t __gthread_active_once = PTHREAD_ONCE_INIT;
+
+ /* Avoid reading __gthread_active twice on the main code path. */
+ int __gthread_active_latest_value = __gthread_active;
+
+ /* This test is not protected to avoid taking a lock on the main code
+ path so every update of __gthread_active in a threaded program must
+ be atomic with regard to the result of the test. */
+ if (__builtin_expect (__gthread_active_latest_value < 0, 0))
+ {
+ if (__gthrw_(pthread_once))
+ {
+ /* If this really is a threaded program, then we must ensure that
+ __gthread_active has been set to 1 before exiting this block. */
+ __gthrw_(pthread_mutex_lock) (&__gthread_active_mutex);
+ __gthrw_(pthread_once) (&__gthread_active_once, __gthread_trigger);
+ __gthrw_(pthread_mutex_unlock) (&__gthread_active_mutex);
+ }
+
+ /* Make sure we'll never enter this block again. */
+ if (__gthread_active < 0)
+ __gthread_active = 0;
+
+ __gthread_active_latest_value = __gthread_active;
+ }
+
+ return __gthread_active_latest_value != 0;
+}
+
+#else /* not Solaris */
+
static inline int
__gthread_active_p (void)
{
static void *const __gthread_active_ptr
- = __extension__ (void *) &__gthrw_pthread_cancel;
+ = __extension__ (void *) &__gthrw_(pthread_cancel);
return __gthread_active_ptr != 0;
}
+#endif /* Solaris */
+
#else /* not SUPPORTS_WEAK */
static inline int
if (__gthread_active_p ())
{
/* Initialize the thread storage key. */
- if (__gthrw_pthread_key_create (&_objc_thread_storage, NULL) == 0)
+ if (__gthrw_(pthread_key_create) (&_objc_thread_storage, NULL) == 0)
{
/* The normal default detach state for threads is
* PTHREAD_CREATE_JOINABLE which causes threads to not die
* when you think they should. */
- if (__gthrw_pthread_attr_init (&_objc_thread_attribs) == 0
- && __gthrw_pthread_attr_setdetachstate (&_objc_thread_attribs,
+ if (__gthrw_(pthread_attr_init) (&_objc_thread_attribs) == 0
+ && __gthrw_(pthread_attr_setdetachstate) (&_objc_thread_attribs,
PTHREAD_CREATE_DETACHED) == 0)
return 0;
}
__gthread_objc_close_thread_system (void)
{
if (__gthread_active_p ()
- && __gthrw_pthread_key_delete (_objc_thread_storage) == 0
- && __gthrw_pthread_attr_destroy (&_objc_thread_attribs) == 0)
+ && __gthrw_(pthread_key_delete) (_objc_thread_storage) == 0
+ && __gthrw_(pthread_attr_destroy) (&_objc_thread_attribs) == 0)
return 0;
return -1;
if (!__gthread_active_p ())
return NULL;
- if (!(__gthrw_pthread_create (&new_thread_handle, NULL, (void *) func, arg)))
+ if (!(__gthrw_(pthread_create) (&new_thread_handle, NULL, (void *) func, arg)))
thread_id = (objc_thread_t) new_thread_handle;
else
thread_id = NULL;
{
#ifdef _POSIX_PRIORITY_SCHEDULING
#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
- pthread_t thread_id = __gthrw_pthread_self ();
+ pthread_t thread_id = __gthrw_(pthread_self) ();
int policy;
struct sched_param params;
int priority_min, priority_max;
- if (__gthrw_pthread_getschedparam (thread_id, &policy, ¶ms) == 0)
+ if (__gthrw_(pthread_getschedparam) (thread_id, &policy, ¶ms) == 0)
{
- if ((priority_max = __gthrw_sched_get_priority_max (policy)) == -1)
+ if ((priority_max = __gthrw_(sched_get_priority_max) (policy)) == -1)
return -1;
- if ((priority_min = __gthrw_sched_get_priority_min (policy)) == -1)
+ if ((priority_min = __gthrw_(sched_get_priority_min) (policy)) == -1)
return -1;
if (priority > priority_max)
* this should be a pointer to policy but pthread.h is universally
* at odds with this.
*/
- if (__gthrw_pthread_setschedparam (thread_id, policy, ¶ms) == 0)
+ if (__gthrw_(pthread_setschedparam) (thread_id, policy, ¶ms) == 0)
return 0;
}
#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
int policy;
struct sched_param params;
- if (__gthrw_pthread_getschedparam (__gthrw_pthread_self (), &policy, ¶ms) == 0)
+ if (__gthrw_(pthread_getschedparam) (__gthrw_(pthread_self) (), &policy, ¶ms) == 0)
return params.sched_priority;
else
return -1;
__gthread_objc_thread_yield (void)
{
if (__gthread_active_p ())
- __gthrw_sched_yield ();
+ __gthrw_(sched_yield) ();
}
/* Terminate the current thread. */
{
if (__gthread_active_p ())
/* exit the thread */
- __gthrw_pthread_exit (&__objc_thread_exit_status);
+ __gthrw_(pthread_exit) (&__objc_thread_exit_status);
/* Failed if we reached here */
return -1;
__gthread_objc_thread_id (void)
{
if (__gthread_active_p ())
- return (objc_thread_t) __gthrw_pthread_self ();
+ return (objc_thread_t) __gthrw_(pthread_self) ();
else
return (objc_thread_t) 1;
}
__gthread_objc_thread_set_data (void *value)
{
if (__gthread_active_p ())
- return __gthrw_pthread_setspecific (_objc_thread_storage, value);
+ return __gthrw_(pthread_setspecific) (_objc_thread_storage, value);
else
{
thread_local_storage = value;
__gthread_objc_thread_get_data (void)
{
if (__gthread_active_p ())
- return __gthrw_pthread_getspecific (_objc_thread_storage);
+ return __gthrw_(pthread_getspecific) (_objc_thread_storage);
else
return thread_local_storage;
}
{
mutex->backend = objc_malloc (sizeof (pthread_mutex_t));
- if (__gthrw_pthread_mutex_init ((pthread_mutex_t *) mutex->backend, NULL))
+ if (__gthrw_(pthread_mutex_init) ((pthread_mutex_t *) mutex->backend, NULL))
{
objc_free (mutex->backend);
mutex->backend = NULL;
/*
* Posix Threads specifically require that the thread be unlocked
- * for __gthrw_pthread_mutex_destroy to work.
+ * for __gthrw_(pthread_mutex_destroy) to work.
*/
do
{
- count = __gthrw_pthread_mutex_unlock ((pthread_mutex_t *) mutex->backend);
+ count = __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend);
if (count < 0)
return -1;
}
while (count);
- if (__gthrw_pthread_mutex_destroy ((pthread_mutex_t *) mutex->backend))
+ if (__gthrw_(pthread_mutex_destroy) ((pthread_mutex_t *) mutex->backend))
return -1;
objc_free (mutex->backend);
__gthread_objc_mutex_lock (objc_mutex_t mutex)
{
if (__gthread_active_p ()
- && __gthrw_pthread_mutex_lock ((pthread_mutex_t *) mutex->backend) != 0)
+ && __gthrw_(pthread_mutex_lock) ((pthread_mutex_t *) mutex->backend) != 0)
{
return -1;
}
__gthread_objc_mutex_trylock (objc_mutex_t mutex)
{
if (__gthread_active_p ()
- && __gthrw_pthread_mutex_trylock ((pthread_mutex_t *) mutex->backend) != 0)
+ && __gthrw_(pthread_mutex_trylock) ((pthread_mutex_t *) mutex->backend) != 0)
{
return -1;
}
__gthread_objc_mutex_unlock (objc_mutex_t mutex)
{
if (__gthread_active_p ()
- && __gthrw_pthread_mutex_unlock ((pthread_mutex_t *) mutex->backend) != 0)
+ && __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend) != 0)
{
return -1;
}
{
condition->backend = objc_malloc (sizeof (pthread_cond_t));
- if (__gthrw_pthread_cond_init ((pthread_cond_t *) condition->backend, NULL))
+ if (__gthrw_(pthread_cond_init) ((pthread_cond_t *) condition->backend, NULL))
{
objc_free (condition->backend);
condition->backend = NULL;
{
if (__gthread_active_p ())
{
- if (__gthrw_pthread_cond_destroy ((pthread_cond_t *) condition->backend))
+ if (__gthrw_(pthread_cond_destroy) ((pthread_cond_t *) condition->backend))
return -1;
objc_free (condition->backend);
__gthread_objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex)
{
if (__gthread_active_p ())
- return __gthrw_pthread_cond_wait ((pthread_cond_t *) condition->backend,
+ return __gthrw_(pthread_cond_wait) ((pthread_cond_t *) condition->backend,
(pthread_mutex_t *) mutex->backend);
else
return 0;
__gthread_objc_condition_broadcast (objc_condition_t condition)
{
if (__gthread_active_p ())
- return __gthrw_pthread_cond_broadcast ((pthread_cond_t *) condition->backend);
+ return __gthrw_(pthread_cond_broadcast) ((pthread_cond_t *) condition->backend);
else
return 0;
}
__gthread_objc_condition_signal (objc_condition_t condition)
{
if (__gthread_active_p ())
- return __gthrw_pthread_cond_signal ((pthread_cond_t *) condition->backend);
+ return __gthrw_(pthread_cond_signal) ((pthread_cond_t *) condition->backend);
else
return 0;
}
__gthread_once (__gthread_once_t *once, void (*func) (void))
{
if (__gthread_active_p ())
- return __gthrw_pthread_once (once, func);
+ return __gthrw_(pthread_once) (once, func);
else
return -1;
}
static inline int
__gthread_key_create (__gthread_key_t *key, void (*dtor) (void *))
{
- return __gthrw_pthread_key_create (key, dtor);
+ return __gthrw_(pthread_key_create) (key, dtor);
}
static inline int
__gthread_key_delete (__gthread_key_t key)
{
- return __gthrw_pthread_key_delete (key);
+ return __gthrw_(pthread_key_delete) (key);
}
static inline void *
__gthread_getspecific (__gthread_key_t key)
{
- return __gthrw_pthread_getspecific (key);
+ return __gthrw_(pthread_getspecific) (key);
}
static inline int
__gthread_setspecific (__gthread_key_t key, const void *ptr)
{
- return __gthrw_pthread_setspecific (key, ptr);
+ return __gthrw_(pthread_setspecific) (key, ptr);
}
static inline int
__gthread_mutex_lock (__gthread_mutex_t *mutex)
{
if (__gthread_active_p ())
- return __gthrw_pthread_mutex_lock (mutex);
+ return __gthrw_(pthread_mutex_lock) (mutex);
else
return 0;
}
__gthread_mutex_trylock (__gthread_mutex_t *mutex)
{
if (__gthread_active_p ())
- return __gthrw_pthread_mutex_trylock (mutex);
+ return __gthrw_(pthread_mutex_trylock) (mutex);
else
return 0;
}
__gthread_mutex_unlock (__gthread_mutex_t *mutex)
{
if (__gthread_active_p ())
- return __gthrw_pthread_mutex_unlock (mutex);
+ return __gthrw_(pthread_mutex_unlock) (mutex);
else
return 0;
}
{
mutex->depth = 0;
mutex->owner = (pthread_t) 0;
- return __gthrw_pthread_mutex_init (&mutex->actual, NULL);
+ return __gthrw_(pthread_mutex_init) (&mutex->actual, NULL);
}
static inline int
{
if (__gthread_active_p ())
{
- pthread_t me = __gthrw_pthread_self ();
+ pthread_t me = __gthrw_(pthread_self) ();
if (mutex->owner != me)
{
- __gthrw_pthread_mutex_lock (&mutex->actual);
+ __gthrw_(pthread_mutex_lock) (&mutex->actual);
mutex->owner = me;
}
{
if (__gthread_active_p ())
{
- pthread_t me = __gthrw_pthread_self ();
+ pthread_t me = __gthrw_(pthread_self) ();
if (mutex->owner != me)
{
- if (__gthrw_pthread_mutex_trylock (&mutex->actual))
+ if (__gthrw_(pthread_mutex_trylock) (&mutex->actual))
return 1;
mutex->owner = me;
}
if (--mutex->depth == 0)
{
mutex->owner = (pthread_t) 0;
- __gthrw_pthread_mutex_unlock (&mutex->actual);
+ __gthrw_(pthread_mutex_unlock) (&mutex->actual);
}
}
return 0;
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