/* 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, 2001 Free Software Foundation, Inc.
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC 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 version.
+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
+version.
-GNU CC is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+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 GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+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. */
/* As a special exception, if you link this library with other files,
some of which are compiled with GCC, to produce an executable,
This exception does not however invalidate any other reasons why
the executable file might be covered by the GNU General Public License. */
-#ifndef __gthr_posix_h
-#define __gthr_posix_h
+#ifndef GCC_GTHR_POSIX_H
+#define GCC_GTHR_POSIX_H
/* POSIX threads specific definitions.
- Easy, since the interface is just one-to-one mapping. */
+ Easy, since the interface is just one-to-one mapping. */
#define __GTHREADS 1
#pragma weak pthread_setspecific
#pragma weak pthread_create
-#pragma weak pthread_mutex_lock
-#pragma weak pthread_mutex_trylock
-#pragma weak pthread_mutex_unlock
+#pragma weak pthread_mutex_lock
+#pragma weak pthread_mutex_trylock
+#pragma weak pthread_mutex_unlock
#ifdef _LIBOBJC
-/* Objective C. */
+/* Objective C. */
#pragma weak pthread_cond_broadcast
#pragma weak pthread_cond_destroy
#pragma weak pthread_cond_init
#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
-static void *__gthread_active_ptr = &pthread_create;
-
static inline int
__gthread_active_p (void)
{
+ static void *const __gthread_active_ptr = (void *) &pthread_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)
{
{
/* Initialize the thread storage key */
if (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)
- return 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)
+ return 0;
+ }
}
- else
- return -1;
+
+ return -1;
}
-/* Close the threads subsystem. */
+/* Close the threads subsystem. */
static inline int
__gthread_objc_close_thread_system(void)
{
/* 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)
{
if (!__gthread_active_p ())
return NULL;
-
+
if ( !(pthread_create(&new_thread_handle, NULL, (void *)func, arg)) )
- thread_id = *(objc_thread_t *)&new_thread_handle;
+ thread_id = (objc_thread_t) new_thread_handle;
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)
{
if (pthread_getschedparam(thread_id, &policy, ¶ms) == 0)
{
- if ((priority_max = sched_get_priority_max(policy)) != 0)
- return -1;
-
- if ((priority_min = sched_get_priority_min(policy)) != 0)
- 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;
+ if ((priority_max = sched_get_priority_max(policy)) != 0)
+ return -1;
+
+ if ((priority_min = sched_get_priority_min(policy)) != 0)
+ 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;
}
}
-/* Return the current thread's priority. */
+/* Return the current thread's priority. */
static inline int
__gthread_objc_thread_get_priority(void)
{
struct sched_param params;
if (pthread_getschedparam(pthread_self(), &policy, ¶ms) == 0)
- return params.sched_priority;
+ return params.sched_priority;
else
- return -1;
+ return -1;
}
else
return OBJC_THREAD_INTERACTIVE_PRIORITY;
}
-/* Yield our process time to another thread. */
+/* Yield our process time to another thread. */
static inline void
__gthread_objc_thread_yield(void)
{
sched_yield();
}
-/* Terminate the current thread. */
+/* Terminate the current thread. */
static inline int
__gthread_objc_thread_exit(void)
{
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)
{
if (__gthread_active_p ())
- {
- pthread_t self = pthread_self();
-
- return *(objc_thread_t *)&self;
- }
+ return (objc_thread_t) pthread_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)
{
}
}
-/* Returns the thread's local storage pointer. */
+/* Returns the thread's local storage pointer. */
static inline void *
__gthread_objc_thread_get_data(void)
{
/* Backend mutex functions */
-/* Allocate a mutex. */
+/* Allocate a mutex. */
static inline int
__gthread_objc_mutex_allocate(objc_mutex_t mutex)
{
return 0;
}
-/* Deallocate a mutex. */
+/* Deallocate a mutex. */
static inline int
__gthread_objc_mutex_deallocate(objc_mutex_t mutex)
{
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)
{
- if (__gthread_active_p ())
- return pthread_mutex_lock((pthread_mutex_t *)mutex->backend);
- else
- return 0;
+ if (__gthread_active_p ()
+ && pthread_mutex_lock((pthread_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)
{
- if (__gthread_active_p ())
- return pthread_mutex_trylock((pthread_mutex_t *)mutex->backend);
- else
- return 0;
+ if (__gthread_active_p ()
+ && pthread_mutex_trylock((pthread_mutex_t *)mutex->backend) != 0)
+ {
+ return -1;
+ }
+
+ return 0;
}
/* Unlock the mutex */
static inline int
__gthread_objc_mutex_unlock(objc_mutex_t mutex)
{
- if (__gthread_active_p ())
- return pthread_mutex_unlock((pthread_mutex_t *)mutex->backend);
- else
- return 0;
+ if (__gthread_active_p ()
+ && pthread_mutex_unlock((pthread_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)
{
return 0;
}
-/* Deallocate a condition. */
+/* Deallocate a condition. */
static inline int
__gthread_objc_condition_deallocate(objc_condition_t condition)
{
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)
{
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)
{
static inline int
__gthread_key_dtor (__gthread_key_t key, void *ptr)
{
- /* Just reset the key value to zero. */
+ /* Just reset the key value to zero. */
if (ptr)
return pthread_setspecific (key, 0);
else
#endif /* _LIBOBJC */
-#endif /* not __gthr_posix_h */
+#endif /* ! GCC_GTHR_POSIX_H */
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