/* Threads compatibility routines for libgcc2 and libobjc. */
/* Compile this one with gcc. */
-/* Copyright (C) 1997, 1999, 2000, 2001 Free Software Foundation, Inc.
+/* Copyright (C) 1997, 1999, 2000, 2001, 2002, 2003, 2004, 2005
+ Free Software Foundation, Inc.
This file is part of GCC.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301, USA. */
/* As a special exception, if you link this library with other files,
some of which are compiled with GCC, to produce an executable,
#define __GTHREADS 1
+/* Some implementations of <pthread.h> require this to be defined. */
+#ifndef _REENTRANT
+#define _REENTRANT 1
+#endif
+
#include <pthread.h>
+#include <unistd.h>
typedef pthread_key_t __gthread_key_t;
typedef pthread_once_t __gthread_once_t;
typedef pthread_mutex_t __gthread_mutex_t;
+typedef pthread_mutex_t __gthread_recursive_mutex_t;
#define __GTHREAD_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
#define __GTHREAD_ONCE_INIT PTHREAD_ONCE_INIT
+#if defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER)
+#define __GTHREAD_RECURSIVE_MUTEX_INIT PTHREAD_RECURSIVE_MUTEX_INITIALIZER
+#elif defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP)
+#define __GTHREAD_RECURSIVE_MUTEX_INIT PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
+#else
+#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function
+#endif
#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
+# define __gthrw(name) \
+ extern __typeof(name) __gthrw_ ## name __attribute__ ((__weakref__(#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))
+#endif
-#pragma weak pthread_once
-#pragma weak pthread_key_create
-#pragma weak pthread_key_delete
-#pragma weak pthread_getspecific
-#pragma weak pthread_setspecific
-#pragma weak pthread_create
+__gthrw(pthread_once);
+__gthrw(pthread_key_create);
+__gthrw(pthread_key_delete);
+__gthrw(pthread_getspecific);
+__gthrw(pthread_setspecific);
+__gthrw(pthread_create);
+__gthrw(pthread_cancel);
-#pragma weak pthread_mutex_lock
-#pragma weak pthread_mutex_trylock
-#pragma weak pthread_mutex_unlock
+__gthrw(pthread_mutex_lock);
+__gthrw(pthread_mutex_trylock);
+__gthrw(pthread_mutex_unlock);
+__gthrw(pthread_mutexattr_init);
+__gthrw(pthread_mutexattr_settype);
+__gthrw(pthread_mutexattr_destroy);
-#ifdef _LIBOBJC
+__gthrw(pthread_mutex_init);
+
+#if defined(_LIBOBJC) || defined(_LIBOBJC_WEAK)
/* Objective-C. */
-#pragma weak pthread_cond_broadcast
-#pragma weak pthread_cond_destroy
-#pragma weak pthread_cond_init
-#pragma weak pthread_cond_signal
-#pragma weak pthread_cond_wait
-#pragma weak pthread_exit
-#pragma weak pthread_mutex_init
-#pragma weak pthread_mutex_destroy
-#pragma weak pthread_self
-#pragma weak sched_get_priority_max
-#pragma weak sched_get_priority_min
-#pragma weak sched_yield
-#pragma weak pthread_attr_destroy
-#pragma weak pthread_attr_init
-#pragma weak pthread_attr_setdetachstate
-#pragma weak pthread_getschedparam
-#pragma weak pthread_setschedparam
-#endif
+__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);
+#ifdef _POSIX_PRIORITY_SCHEDULING
+#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
+__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);
+#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
+__gthrw(pthread_getschedparam);
+__gthrw(pthread_setschedparam);
+#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
+#endif /* _LIBOBJC || _LIBOBJC_WEAK */
+
+#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
static inline int
__gthread_active_p (void)
{
- static void *const __gthread_active_ptr = (void *) &pthread_create;
+ static void *const __gthread_active_ptr
+ = __extension__ (void *) &__gthrw_pthread_cancel;
return __gthread_active_ptr != 0;
}
/* Initialize the threads subsystem. */
static inline int
-__gthread_objc_init_thread_system(void)
+__gthread_objc_init_thread_system (void)
{
if (__gthread_active_p ())
{
- /* Initialize the thread storage key */
- if (pthread_key_create(&_objc_thread_storage, NULL) == 0)
+ /* Initialize the thread storage key. */
+ 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 (pthread_attr_init(&_objc_thread_attribs) == 0
- && pthread_attr_setdetachstate(&_objc_thread_attribs,
- PTHREAD_CREATE_DETACHED) == 0)
+ if (__gthrw_pthread_attr_init (&_objc_thread_attribs) == 0
+ && __gthrw_pthread_attr_setdetachstate (&_objc_thread_attribs,
+ PTHREAD_CREATE_DETACHED) == 0)
return 0;
}
}
/* Close the threads subsystem. */
static inline int
-__gthread_objc_close_thread_system(void)
+__gthread_objc_close_thread_system (void)
{
if (__gthread_active_p ()
- && pthread_key_delete(_objc_thread_storage) == 0
- && 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;
/* Create a new thread of execution. */
static inline objc_thread_t
-__gthread_objc_thread_detach(void (*func)(void *), void *arg)
+__gthread_objc_thread_detach (void (*func)(void *), void *arg)
{
objc_thread_t thread_id;
pthread_t new_thread_handle;
if (!__gthread_active_p ())
return NULL;
- if ( !(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;
/* Set the current thread's priority. */
static inline int
-__gthread_objc_thread_set_priority(int priority)
+__gthread_objc_thread_set_priority (int priority)
{
- if (!__gthread_active_p())
+ if (!__gthread_active_p ())
return -1;
- else {
- pthread_t thread_id = pthread_self();
- int policy;
- struct sched_param params;
- int priority_min, priority_max;
-
- if (pthread_getschedparam(thread_id, &policy, ¶ms) == 0)
- {
- if ((priority_max = sched_get_priority_max(policy)) != 0)
- return -1;
+ else
+ {
+#ifdef _POSIX_PRIORITY_SCHEDULING
+#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
+ pthread_t thread_id = __gthrw_pthread_self ();
+ int policy;
+ struct sched_param params;
+ int priority_min, priority_max;
- if ((priority_min = sched_get_priority_min(policy)) != 0)
- return -1;
+ if (__gthrw_pthread_getschedparam (thread_id, &policy, ¶ms) == 0)
+ {
+ if ((priority_max = __gthrw_sched_get_priority_max (policy)) == -1)
+ return -1;
- if (priority > priority_max)
- priority = priority_max;
- else if (priority < priority_min)
- priority = priority_min;
- params.sched_priority = priority;
-
- /*
- * The solaris 7 and several other man pages incorrectly state that
- * this should be a pointer to policy but pthread.h is universally
- * at odds with this.
- */
- if (pthread_setschedparam(thread_id, policy, ¶ms) == 0)
- return 0;
- }
- return -1;
- }
+ if ((priority_min = __gthrw_sched_get_priority_min (policy)) == -1)
+ return -1;
+
+ if (priority > priority_max)
+ priority = priority_max;
+ else if (priority < priority_min)
+ priority = priority_min;
+ params.sched_priority = priority;
+
+ /*
+ * The solaris 7 and several other man pages incorrectly state that
+ * 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)
+ return 0;
+ }
+#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
+#endif /* _POSIX_PRIORITY_SCHEDULING */
+ return -1;
+ }
}
/* Return the current thread's priority. */
static inline int
-__gthread_objc_thread_get_priority(void)
+__gthread_objc_thread_get_priority (void)
{
+#ifdef _POSIX_PRIORITY_SCHEDULING
+#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
if (__gthread_active_p ())
{
int policy;
struct sched_param params;
- if (pthread_getschedparam(pthread_self(), &policy, ¶ms) == 0)
+ if (__gthrw_pthread_getschedparam (__gthrw_pthread_self (), &policy, ¶ms) == 0)
return params.sched_priority;
else
return -1;
}
else
+#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
+#endif /* _POSIX_PRIORITY_SCHEDULING */
return OBJC_THREAD_INTERACTIVE_PRIORITY;
}
/* Yield our process time to another thread. */
static inline void
-__gthread_objc_thread_yield(void)
+__gthread_objc_thread_yield (void)
{
if (__gthread_active_p ())
- sched_yield();
+ __gthrw_sched_yield ();
}
/* Terminate the current thread. */
static inline int
-__gthread_objc_thread_exit(void)
+__gthread_objc_thread_exit (void)
{
if (__gthread_active_p ())
/* exit the thread */
- pthread_exit(&__objc_thread_exit_status);
+ __gthrw_pthread_exit (&__objc_thread_exit_status);
/* Failed if we reached here */
return -1;
/* Returns an integer value which uniquely describes a thread. */
static inline objc_thread_t
-__gthread_objc_thread_id(void)
+__gthread_objc_thread_id (void)
{
if (__gthread_active_p ())
- return (objc_thread_t) pthread_self();
+ return (objc_thread_t) __gthrw_pthread_self ();
else
return (objc_thread_t) 1;
}
/* Sets the thread's local storage pointer. */
static inline int
-__gthread_objc_thread_set_data(void *value)
+__gthread_objc_thread_set_data (void *value)
{
if (__gthread_active_p ())
- return pthread_setspecific(_objc_thread_storage, value);
+ return __gthrw_pthread_setspecific (_objc_thread_storage, value);
else
{
thread_local_storage = value;
/* Returns the thread's local storage pointer. */
static inline void *
-__gthread_objc_thread_get_data(void)
+__gthread_objc_thread_get_data (void)
{
if (__gthread_active_p ())
- return pthread_getspecific(_objc_thread_storage);
+ return __gthrw_pthread_getspecific (_objc_thread_storage);
else
return thread_local_storage;
}
/* Allocate a mutex. */
static inline int
-__gthread_objc_mutex_allocate(objc_mutex_t mutex)
+__gthread_objc_mutex_allocate (objc_mutex_t mutex)
{
if (__gthread_active_p ())
{
- mutex->backend = objc_malloc(sizeof(pthread_mutex_t));
+ mutex->backend = objc_malloc (sizeof (pthread_mutex_t));
- if (pthread_mutex_init((pthread_mutex_t *)mutex->backend, NULL))
+ if (__gthrw_pthread_mutex_init ((pthread_mutex_t *) mutex->backend, NULL))
{
- objc_free(mutex->backend);
+ objc_free (mutex->backend);
mutex->backend = NULL;
return -1;
}
/* Deallocate a mutex. */
static inline int
-__gthread_objc_mutex_deallocate(objc_mutex_t mutex)
+__gthread_objc_mutex_deallocate (objc_mutex_t mutex)
{
if (__gthread_active_p ())
{
/*
* Posix Threads specifically require that the thread be unlocked
- * for pthread_mutex_destroy to work.
+ * for __gthrw_pthread_mutex_destroy to work.
*/
do
{
- count = 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 (pthread_mutex_destroy((pthread_mutex_t *)mutex->backend))
+ if (__gthrw_pthread_mutex_destroy ((pthread_mutex_t *) mutex->backend))
return -1;
- objc_free(mutex->backend);
+ objc_free (mutex->backend);
mutex->backend = NULL;
}
return 0;
/* Grab a lock on a mutex. */
static inline int
-__gthread_objc_mutex_lock(objc_mutex_t mutex)
+__gthread_objc_mutex_lock (objc_mutex_t mutex)
{
if (__gthread_active_p ()
- && pthread_mutex_lock((pthread_mutex_t *)mutex->backend) != 0)
+ && __gthrw_pthread_mutex_lock ((pthread_mutex_t *) mutex->backend) != 0)
{
return -1;
}
/* Try to grab a lock on a mutex. */
static inline int
-__gthread_objc_mutex_trylock(objc_mutex_t mutex)
+__gthread_objc_mutex_trylock (objc_mutex_t mutex)
{
if (__gthread_active_p ()
- && pthread_mutex_trylock((pthread_mutex_t *)mutex->backend) != 0)
+ && __gthrw_pthread_mutex_trylock ((pthread_mutex_t *) mutex->backend) != 0)
{
return -1;
}
/* Unlock the mutex */
static inline int
-__gthread_objc_mutex_unlock(objc_mutex_t mutex)
+__gthread_objc_mutex_unlock (objc_mutex_t mutex)
{
if (__gthread_active_p ()
- && pthread_mutex_unlock((pthread_mutex_t *)mutex->backend) != 0)
+ && __gthrw_pthread_mutex_unlock ((pthread_mutex_t *) mutex->backend) != 0)
{
return -1;
}
/* Allocate a condition. */
static inline int
-__gthread_objc_condition_allocate(objc_condition_t condition)
+__gthread_objc_condition_allocate (objc_condition_t condition)
{
if (__gthread_active_p ())
{
- condition->backend = objc_malloc(sizeof(pthread_cond_t));
+ condition->backend = objc_malloc (sizeof (pthread_cond_t));
- if (pthread_cond_init((pthread_cond_t *)condition->backend, NULL))
+ if (__gthrw_pthread_cond_init ((pthread_cond_t *) condition->backend, NULL))
{
- objc_free(condition->backend);
+ objc_free (condition->backend);
condition->backend = NULL;
return -1;
}
/* Deallocate a condition. */
static inline int
-__gthread_objc_condition_deallocate(objc_condition_t condition)
+__gthread_objc_condition_deallocate (objc_condition_t condition)
{
if (__gthread_active_p ())
{
- if (pthread_cond_destroy((pthread_cond_t *)condition->backend))
+ if (__gthrw_pthread_cond_destroy ((pthread_cond_t *) condition->backend))
return -1;
- objc_free(condition->backend);
+ objc_free (condition->backend);
condition->backend = NULL;
}
return 0;
/* Wait on the condition */
static inline int
-__gthread_objc_condition_wait(objc_condition_t condition, objc_mutex_t mutex)
+__gthread_objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex)
{
if (__gthread_active_p ())
- return pthread_cond_wait((pthread_cond_t *)condition->backend,
- (pthread_mutex_t *)mutex->backend);
+ return __gthrw_pthread_cond_wait ((pthread_cond_t *) condition->backend,
+ (pthread_mutex_t *) mutex->backend);
else
return 0;
}
/* Wake up all threads waiting on this condition. */
static inline int
-__gthread_objc_condition_broadcast(objc_condition_t condition)
+__gthread_objc_condition_broadcast (objc_condition_t condition)
{
if (__gthread_active_p ())
- return pthread_cond_broadcast((pthread_cond_t *)condition->backend);
+ return __gthrw_pthread_cond_broadcast ((pthread_cond_t *) condition->backend);
else
return 0;
}
/* Wake up one thread waiting on this condition. */
static inline int
-__gthread_objc_condition_signal(objc_condition_t condition)
+__gthread_objc_condition_signal (objc_condition_t condition)
{
if (__gthread_active_p ())
- return 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 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 pthread_key_create (key, dtor);
-}
-
-static inline int
-__gthread_key_dtor (__gthread_key_t key, void *ptr)
-{
- /* Just reset the key value to zero. */
- if (ptr)
- return pthread_setspecific (key, 0);
- else
- return 0;
+ return __gthrw_pthread_key_create (key, dtor);
}
static inline int
__gthread_key_delete (__gthread_key_t key)
{
- return pthread_key_delete (key);
+ return __gthrw_pthread_key_delete (key);
}
static inline void *
__gthread_getspecific (__gthread_key_t key)
{
- return pthread_getspecific (key);
+ return __gthrw_pthread_getspecific (key);
}
static inline int
__gthread_setspecific (__gthread_key_t key, const void *ptr)
{
- return 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 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 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 pthread_mutex_unlock (mutex);
+ return __gthrw_pthread_mutex_unlock (mutex);
else
return 0;
}
+#ifndef PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
+static inline int
+__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *mutex)
+{
+ if (__gthread_active_p ())
+ {
+ pthread_mutexattr_t attr;
+ int r;
+
+ r = __gthrw_pthread_mutexattr_init (&attr);
+ if (!r)
+ r = __gthrw_pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_RECURSIVE);
+ if (!r)
+ r = __gthrw_pthread_mutex_init (mutex, &attr);
+ if (!r)
+ r = __gthrw_pthread_mutexattr_destroy (&attr);
+ return r;
+ }
+ return 0;
+}
+#endif
+
+static inline int
+__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *mutex)
+{
+ return __gthread_mutex_lock (mutex);
+}
+
+static inline int
+__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *mutex)
+{
+ return __gthread_mutex_trylock (mutex);
+}
+
+static inline int
+__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *mutex)
+{
+ return __gthread_mutex_unlock (mutex);
+}
+
#endif /* _LIBOBJC */
#endif /* ! GCC_GTHR_POSIX_H */
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