/* 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, 2008, 2009
+ Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2, or (at your option) any later
+Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
-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. */
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
-/* As a special exception, if you link this library with other files,
- some of which are compiled with GCC, to produce an executable,
- this library does not by itself cause the resulting executable
- to be covered by the GNU General Public License.
- This exception does not however invalidate any other reasons why
- the executable file might be covered by the GNU General Public License. */
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+<http://www.gnu.org/licenses/>. */
#ifndef GCC_GTHR_SOLARIS_H
#define GCC_GTHR_SOLARIS_H
/* Solaris threads as found in Solaris 2.[456].
Actually these are Unix International (UI) threads, but I don't
- know if anyone else implements these. */
+ know if anyone else implements these. */
#define __GTHREADS 1
#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
-{
+typedef struct {
mutex_t mutex;
int once;
} __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
-/* This will not actually work in Solaris 2.5, since libc contains
- dummy symbols of all thr_* routines. */
+#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
-static void *__gthread_active_ptr = (void *) &thr_create;
+/* 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
+ = __extension__ (void *) &__gthrw_(thr_create);
return __gthread_active_ptr != 0;
}
/* Backend initialization functions */
-/* Initialize the threads subsystem. */
+/* Initialize the threads subsystem. */
static inline int
-__gthread_objc_init_thread_system(void)
+__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;
}
-/* Close the threads subsystem. */
+/* Close the threads subsystem. */
static inline int
-__gthread_objc_close_thread_system(void)
+__gthread_objc_close_thread_system (void)
{
if (__gthread_active_p ())
return 0;
/* Backend thread functions */
-/* Create a new thread of execution. */
+/* 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;
thread_t new_thread_id = 0;
if (!__gthread_active_p ())
return NULL;
-
- if (thr_create(NULL, 0, (void *)func, arg,
- THR_DETACHED | THR_NEW_LWP,
- &new_thread_id) == 0)
- thread_id = *(objc_thread_t *)&new_thread_id;
+
+ 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;
else
thread_id = NULL;
-
+
return thread_id;
}
-/* Set the current thread's priority. */
+/* Set the current thread's priority. */
static inline int
-__gthread_objc_thread_set_priority(int priority)
+__gthread_objc_thread_set_priority (int priority)
{
int sys_priority = 0;
}
/* 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;
}
-/* Return the current thread's priority. */
+/* Return the current thread's priority. */
static inline int
-__gthread_objc_thread_get_priority(void)
+__gthread_objc_thread_get_priority (void)
{
int sys_priority;
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;
return OBJC_THREAD_LOW_PRIORITY;
}
- /* Couldn't get priority. */
+ /* Couldn't get priority. */
return -1;
}
-/* Yield our process time to another thread. */
+/* Yield our process time to another thread. */
static inline void
-__gthread_objc_thread_yield(void)
+__gthread_objc_thread_yield (void)
{
if (__gthread_active_p ())
- thr_yield();
+ __gthrw_(thr_yield) ();
}
-/* Terminate the current thread. */
+/* Terminate the current thread. */
static inline int
-__gthread_objc_thread_exit(void)
+__gthread_objc_thread_exit (void)
{
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;
}
-/* Returns an integer value which uniquely describes a thread. */
+/* 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)thr_self();
+ return (objc_thread_t) __gthrw_(thr_self) ();
else
- return (objc_thread_t)1;
+ return (objc_thread_t) 1;
}
-/* Sets the thread's local storage pointer. */
+/* 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 ())
{
- if (thr_setspecific(_objc_thread_storage, value) == 0)
+ if (__gthrw_(thr_setspecific) (_objc_thread_storage, value) == 0)
return 0;
else
return -1;
}
}
-/* Returns the thread's local storage pointer. */
+/* Returns the thread's local storage pointer. */
static inline void *
-__gthread_objc_thread_get_data(void)
+__gthread_objc_thread_get_data (void)
{
void *value = NULL;
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;
/* Backend mutex functions */
-/* Allocate a mutex. */
+/* 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_init( (mutex_t *)(&(mutex->backend)), USYNC_THREAD, 0))
+ && __gthrw_(mutex_init) ((mutex_t *) (&(mutex->backend)), USYNC_THREAD, 0))
return -1;
return 0;
}
-/* Deallocate a mutex. */
+/* 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 ())
- mutex_destroy((mutex_t *)(&(mutex->backend)));
+ __gthrw_(mutex_destroy) ((mutex_t *) (&(mutex->backend)));
return 0;
}
-/* Grab a lock on a mutex. */
+/* 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 ()
- && mutex_lock((mutex_t *)(&(mutex->backend))) != 0)
+ && __gthrw_(mutex_lock) ((mutex_t *) (&(mutex->backend))) != 0)
return -1;
return 0;
}
-/* Try to grab a lock on a mutex. */
+/* 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 ()
- && mutex_trylock((mutex_t *)(&(mutex->backend))) != 0)
+ && __gthrw_(mutex_trylock) ((mutex_t *) (&(mutex->backend))) != 0)
return -1;
return 0;
/* 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 ()
- && mutex_unlock((mutex_t *)(&(mutex->backend))) != 0)
+ && __gthrw_(mutex_unlock) ((mutex_t *) (&(mutex->backend))) != 0)
return -1;
return 0;
/* Backend condition mutex functions */
-/* Allocate a condition. */
+/* 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 ())
- return cond_init((cond_t *)(&(condition->backend)), USYNC_THREAD,
- NULL);
+ return __gthrw_(cond_init) ((cond_t *) (&(condition->backend)), USYNC_THREAD,
+ NULL);
else
return 0;
}
-/* Deallocate a condition. */
+/* 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 ())
- return cond_destroy((cond_t *)(&(condition->backend)));
+ return __gthrw_(cond_destroy) ((cond_t *) (&(condition->backend)));
else
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 cond_wait((cond_t *)(&(condition->backend)),
- (mutex_t *)(&(mutex->backend)));
+ return __gthrw_(cond_wait) ((cond_t *) (&(condition->backend)),
+ (mutex_t *) (&(mutex->backend)));
else
return 0;
}
-/* Wake up all threads waiting on this condition. */
+/* 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 cond_broadcast((cond_t *)(&(condition->backend)));
+ return __gthrw_(cond_broadcast) ((cond_t *) (&(condition->backend)));
else
return 0;
}
-/* Wake up one thread waiting on this condition. */
+/* 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 cond_signal((cond_t *)(&(condition->backend)));
+ return __gthrw_(cond_signal) ((cond_t *) (&(condition->backend)));
else
return 0;
}
#else /* _LIBOBJC */
static inline int
-__gthread_once (__gthread_once_t *once, void (*func) (void))
+__gthread_once (__gthread_once_t *__once, void (*__func) (void))
{
if (! __gthread_active_p ())
return -1;
- if (once == 0 || func == 0)
+ if (__once == 0 || __func == 0)
return EINVAL;
- if (once->once == 0)
+ if (__once->once == 0)
{
- int status = mutex_lock (&once->mutex);
- if (status != 0)
- return status;
- if (once->once == 0)
+ int __status = __gthrw_(mutex_lock) (&__once->mutex);
+ if (__status != 0)
+ return __status;
+ if (__once->once == 0)
{
- (*func) ();
- once->once ++;
+ (*__func) ();
+ __once->once++;
}
- mutex_unlock (&once->mutex);
+ __gthrw_(mutex_unlock) (&__once->mutex);
}
return 0;
}
static inline int
-__gthread_key_create (__gthread_key_t *key, void (*dtor) (void *))
+__gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *))
{
/* 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)
+ got a reasonable key value, and if not, fail. */
+ *__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. */
+ /* Not possible. */
return -1;
}
static inline void *
-__gthread_getspecific (__gthread_key_t key)
+__gthread_getspecific (__gthread_key_t __key)
{
- void *ptr;
- if (thr_getspecific (key, &ptr) == 0)
- return ptr;
+ void *__ptr;
+ if (__gthrw_(thr_getspecific) (__key, &__ptr) == 0)
+ return __ptr;
else
return 0;
}
static inline int
-__gthread_setspecific (__gthread_key_t key, const void *ptr)
+__gthread_setspecific (__gthread_key_t __key, const void *__ptr)
+{
+ return __gthrw_(thr_setspecific) (__key, (void *) __ptr);
+}
+
+static inline int
+__gthread_mutex_destroy (__gthread_mutex_t *__mutex)
{
- return thr_setspecific (key, (void *) ptr);
+ if (__gthread_active_p ())
+ return __gthrw_(mutex_destroy) (__mutex);
+ else
+ return 0;
}
static inline int
-__gthread_mutex_lock (__gthread_mutex_t *mutex)
+__gthread_mutex_lock (__gthread_mutex_t *__mutex)
{
if (__gthread_active_p ())
- return mutex_lock (mutex);
+ return __gthrw_(mutex_lock) (__mutex);
else
return 0;
}
static inline int
-__gthread_mutex_trylock (__gthread_mutex_t *mutex)
+__gthread_mutex_trylock (__gthread_mutex_t *__mutex)
{
if (__gthread_active_p ())
- return mutex_trylock (mutex);
+ return __gthrw_(mutex_trylock) (__mutex);
else
return 0;
}
static inline int
-__gthread_mutex_unlock (__gthread_mutex_t *mutex)
+__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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