/* Threads compatibility routines for libgcc2 and libobjc. */
/* Compile this one with gcc. */
-/* Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc.
+/* Copyright (C) 1997, 1999, 2000, 2004, 2005, 2006
+ 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,
#include <thread.h>
#include <errno.h>
+#ifdef __cplusplus
+#define UNUSED(x)
+#else
+#define UNUSED(x) x __attribute__((unused))
+#endif
+
typedef thread_key_t __gthread_key_t;
typedef struct {
mutex_t mutex;
} __gthread_once_t;
typedef mutex_t __gthread_mutex_t;
+typedef struct {
+ long depth;
+ thread_t owner;
+ mutex_t actual;
+} __gthread_recursive_mutex_t;
+
#define __GTHREAD_ONCE_INIT { DEFAULTMUTEX, 0 }
#define __GTHREAD_MUTEX_INIT DEFAULTMUTEX
+#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function
#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
+# define __gthrw(name) \
+ static __typeof(name) __gthrw_ ## name __attribute__ ((__weakref__(#name)));
+# define __gthrw_(name) __gthrw_ ## name
+#else
+# define __gthrw(name)
+# define __gthrw_(name) name
+#endif
-#pragma weak thr_keycreate
-#pragma weak thr_getspecific
-#pragma weak thr_setspecific
-#pragma weak thr_create
+__gthrw(thr_keycreate)
+__gthrw(thr_getspecific)
+__gthrw(thr_setspecific)
+__gthrw(thr_create)
+__gthrw(thr_self)
-#pragma weak mutex_lock
-#pragma weak mutex_trylock
-#pragma weak mutex_unlock
+__gthrw(mutex_init)
+__gthrw(mutex_destroy)
+__gthrw(mutex_lock)
+__gthrw(mutex_trylock)
+__gthrw(mutex_unlock)
#ifdef _LIBOBJC
-#pragma weak thr_exit
-#pragma weak thr_keycreate
-#pragma weak thr_getprio
-#pragma weak thr_self
-#pragma weak thr_setprio
-#pragma weak thr_yield
-
-#pragma weak cond_init
-#pragma weak cond_destroy
-#pragma weak cond_wait
-#pragma weak cond_broadcast
-#pragma weak cond_signal
-
-#pragma weak mutex_init
-#pragma weak mutex_destroy
+__gthrw(thr_exit)
+__gthrw(thr_getprio)
+__gthrw(thr_setprio)
+__gthrw(thr_yield)
+
+__gthrw(cond_init)
+__gthrw(cond_destroy)
+__gthrw(cond_wait)
+__gthrw(cond_broadcast)
+__gthrw(cond_signal)
+
#endif
+#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
+
/* This will not actually work in Solaris 2.5, since libc contains
dummy symbols of all thr_* routines. */
static inline int
__gthread_active_p (void)
{
- static void *const __gthread_active_ptr = (void *) &thr_create;
+ static void *const __gthread_active_ptr = (void *) &__gthrw_(thr_create);
return __gthread_active_ptr != 0;
}
static inline int
__gthread_objc_init_thread_system (void)
{
- /* Initialize the thread storage key */
+ /* Initialize the thread storage key. */
if (__gthread_active_p ()
- && thr_keycreate (&_objc_thread_storage, NULL) == 0)
+ && __gthrw_(thr_keycreate) (&_objc_thread_storage, NULL) == 0)
return 0;
return -1;
if (!__gthread_active_p ())
return NULL;
- if (thr_create (NULL, 0, (void *) func, arg,
+ if (__gthrw_(thr_create) (NULL, 0, (void *) func, arg,
THR_DETACHED | THR_NEW_LWP,
&new_thread_id) == 0)
thread_id = *(objc_thread_t *) &new_thread_id;
}
/* Change priority */
- if (thr_setprio (thr_self (), sys_priority) == 0)
+ if (__gthrw_(thr_setprio) (__gthrw_(thr_self) (), sys_priority) == 0)
return 0;
else
return -1;
if (!__gthread_active_p ())
return OBJC_THREAD_INTERACTIVE_PRIORITY;
- if (thr_getprio (thr_self (), &sys_priority) == 0)
+ if (__gthrw_(thr_getprio) (__gthrw_(thr_self) (), &sys_priority) == 0)
{
if (sys_priority >= 250)
return OBJC_THREAD_INTERACTIVE_PRIORITY;
__gthread_objc_thread_yield (void)
{
if (__gthread_active_p ())
- thr_yield ();
+ __gthrw_(thr_yield) ();
}
/* Terminate the current thread. */
{
if (__gthread_active_p ())
/* exit the thread */
- thr_exit (&__objc_thread_exit_status);
+ __gthrw_(thr_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) thr_self ();
+ return (objc_thread_t) __gthrw_(thr_self) ();
else
return (objc_thread_t) 1;
}
{
if (__gthread_active_p ())
{
- if (thr_setspecific (_objc_thread_storage, value) == 0)
+ if (__gthrw_(thr_setspecific) (_objc_thread_storage, value) == 0)
return 0;
else
return -1;
if (__gthread_active_p ())
{
- if (thr_getspecific (_objc_thread_storage, &value) == 0)
+ if (__gthrw_(thr_getspecific) (_objc_thread_storage, &value) == 0)
return value;
else
return NULL;
__gthread_objc_mutex_allocate (objc_mutex_t mutex)
{
if (__gthread_active_p ()
- && mutex_init ((mutex_t *) (&(mutex->backend)), USYNC_THREAD, 0))
+ && __gthrw_(mutex_init) ((mutex_t *) (&(mutex->backend)), USYNC_THREAD, 0))
return -1;
return 0;
__gthread_objc_mutex_deallocate (objc_mutex_t mutex)
{
if (__gthread_active_p ())
- mutex_destroy ((mutex_t *) (&(mutex->backend)));
+ __gthrw_(mutex_destroy) ((mutex_t *) (&(mutex->backend)));
return 0;
}
__gthread_objc_mutex_lock (objc_mutex_t mutex)
{
if (__gthread_active_p ()
- && mutex_lock ((mutex_t *) (&(mutex->backend))) != 0)
+ && __gthrw_(mutex_lock) ((mutex_t *) (&(mutex->backend))) != 0)
return -1;
return 0;
__gthread_objc_mutex_trylock (objc_mutex_t mutex)
{
if (__gthread_active_p ()
- && mutex_trylock ((mutex_t *) (&(mutex->backend))) != 0)
+ && __gthrw_(mutex_trylock) ((mutex_t *) (&(mutex->backend))) != 0)
return -1;
return 0;
__gthread_objc_mutex_unlock (objc_mutex_t mutex)
{
if (__gthread_active_p ()
- && mutex_unlock ((mutex_t *) (&(mutex->backend))) != 0)
+ && __gthrw_(mutex_unlock) ((mutex_t *) (&(mutex->backend))) != 0)
return -1;
return 0;
__gthread_objc_condition_allocate (objc_condition_t condition)
{
if (__gthread_active_p ())
- return cond_init ((cond_t *) (&(condition->backend)), USYNC_THREAD,
+ return __gthrw_(cond_init) ((cond_t *) (&(condition->backend)), USYNC_THREAD,
NULL);
else
return 0;
__gthread_objc_condition_deallocate (objc_condition_t condition)
{
if (__gthread_active_p ())
- return cond_destroy ((cond_t *) (&(condition->backend)));
+ return __gthrw_(cond_destroy) ((cond_t *) (&(condition->backend)));
else
return 0;
}
__gthread_objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex)
{
if (__gthread_active_p ())
- return cond_wait ((cond_t *) (&(condition->backend)),
+ return __gthrw_(cond_wait) ((cond_t *) (&(condition->backend)),
(mutex_t *) (&(mutex->backend)));
else
return 0;
__gthread_objc_condition_broadcast (objc_condition_t condition)
{
if (__gthread_active_p ())
- return cond_broadcast ((cond_t *) (&(condition->backend)));
+ return __gthrw_(cond_broadcast) ((cond_t *) (&(condition->backend)));
else
return 0;
}
__gthread_objc_condition_signal (objc_condition_t condition)
{
if (__gthread_active_p ())
- return cond_signal ((cond_t *) (&(condition->backend)));
+ return __gthrw_(cond_signal) ((cond_t *) (&(condition->backend)));
else
return 0;
}
if (once->once == 0)
{
- int status = mutex_lock (&once->mutex);
+ int status = __gthrw_(mutex_lock) (&once->mutex);
if (status != 0)
return status;
if (once->once == 0)
(*func) ();
once->once++;
}
- mutex_unlock (&once->mutex);
+ __gthrw_(mutex_unlock) (&once->mutex);
}
return 0;
}
{
/* Solaris 2.5 contains thr_* routines no-op in libc, so test if we actually
got a reasonable key value, and if not, fail. */
- *key = -1;
- if (thr_keycreate (key, dtor) != 0 || *key == -1)
+ *key = (__gthread_key_t)-1;
+ if (__gthrw_(thr_keycreate) (key, dtor) != 0 || *key == (__gthread_key_t)-1)
return -1;
else
return 0;
}
static inline int
-__gthread_key_dtor (__gthread_key_t key, void *ptr)
-{
- /* Nothing needed. */
- return 0;
-}
-
-static inline int
-__gthread_key_delete (__gthread_key_t key)
+__gthread_key_delete (__gthread_key_t UNUSED (key))
{
/* Not possible. */
return -1;
__gthread_getspecific (__gthread_key_t key)
{
void *ptr;
- if (thr_getspecific (key, &ptr) == 0)
+ if (__gthrw_(thr_getspecific) (key, &ptr) == 0)
return ptr;
else
return 0;
static inline int
__gthread_setspecific (__gthread_key_t key, const void *ptr)
{
- return thr_setspecific (key, (void *) ptr);
+ return __gthrw_(thr_setspecific) (key, (void *) ptr);
}
static inline int
__gthread_mutex_lock (__gthread_mutex_t *mutex)
{
if (__gthread_active_p ())
- return mutex_lock (mutex);
+ return __gthrw_(mutex_lock) (mutex);
else
return 0;
}
__gthread_mutex_trylock (__gthread_mutex_t *mutex)
{
if (__gthread_active_p ())
- return mutex_trylock (mutex);
+ return __gthrw_(mutex_trylock) (mutex);
else
return 0;
}
__gthread_mutex_unlock (__gthread_mutex_t *mutex)
{
if (__gthread_active_p ())
- return mutex_unlock (mutex);
+ return __gthrw_(mutex_unlock) (mutex);
else
return 0;
}
+static inline int
+__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *mutex)
+{
+ mutex->depth = 0;
+ mutex->owner = (thread_t) 0;
+ return __gthrw_(mutex_init) (&mutex->actual, USYNC_THREAD, 0);
+}
+
+static inline int
+__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *mutex)
+{
+ if (__gthread_active_p ())
+ {
+ thread_t me = __gthrw_(thr_self) ();
+
+ if (mutex->owner != me)
+ {
+ __gthrw_(mutex_lock) (&mutex->actual);
+ mutex->owner = me;
+ }
+
+ mutex->depth++;
+ }
+ return 0;
+}
+
+static inline int
+__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *mutex)
+{
+ if (__gthread_active_p ())
+ {
+ thread_t me = __gthrw_(thr_self) ();
+
+ if (mutex->owner != me)
+ {
+ if (__gthrw_(mutex_trylock) (&mutex->actual))
+ return 1;
+ mutex->owner = me;
+ }
+
+ mutex->depth++;
+ }
+ return 0;
+}
+
+static inline int
+__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *mutex)
+{
+ if (__gthread_active_p ())
+ {
+ if (--mutex->depth == 0)
+ {
+ mutex->owner = (thread_t) 0;
+ __gthrw_(mutex_unlock) (&mutex->actual);
+ }
+ }
+ return 0;
+}
+
#endif /* _LIBOBJC */
+#undef UNUSED
+
#endif /* ! GCC_GTHR_SOLARIS_H */
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