-
+/* 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, 2004 Free Software Foundation, Inc.
This file is part of GCC.
#ifndef GCC_GTHR_DCE_H
#define GCC_GTHR_DCE_H
+/* If _DCE_THREADS is not defined, then we're building the single
+ threaded version of the libraries and do not want to reference
+ anything related to pthreads or dce. */
+#ifndef _DCE_THREADS
+#include "gthr-single.h"
+#else
/* DCE threads interface.
DCE threads are based on POSIX threads draft 4, and many things
have changed since then. */
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_ONCE_INIT pthread_once_init
#define __GTHREAD_MUTEX_INIT_FUNCTION __gthread_mutex_init_function
+#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function
#define __GTHREAD_MUTEX_INIT_DEFAULT pthread_once_init
#pragma weak pthread_mutex_lock
#pragma weak pthread_mutex_trylock
#pragma weak pthread_mutex_unlock
+#pragma weak pthread_mutexattr_create
+#pragma weak pthread_mutexattr_setkind_np
+#pragma weak pthread_mutexattr_delete
#ifdef _LIBOBJC
-/* Objective C. */
+/* Objective-C. */
#pragma weak pthread_cond_broadcast
#pragma weak pthread_cond_destroy
#pragma weak pthread_cond_init
#pragma weak pthread_yield
#endif
-static void *__gthread_active_ptr = (void *) &pthread_create;
-
static inline int
__gthread_active_p (void)
{
+ static void *const __gthread_active_ptr = (void *) &pthread_create;
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 */
+ /* Initialize the thread storage key. */
return pthread_keycreate (&_objc_thread_storage, NULL);
else
return -1;
/* 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;
/* 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, pthread_attr_default,
- (void *)func, arg)) )
+
+ if (!(pthread_create (&new_thread_handle, pthread_attr_default,
+ (void *) func, arg)))
{
/* ??? May not work! (64bit) */
- thread_id = *(objc_thread_t *)&new_thread_handle;
- pthread_detach(&new_thread_handle); /* Fully detach thread. */
+ thread_id = *(objc_thread_t *) &new_thread_handle;
+ pthread_detach (&new_thread_handle); /* Fully detach thread. */
}
else
thread_id = NULL;
-
+
return thread_id;
}
/* 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;
sys_priority = (PRI_BG_MIN_NP + PRI_BG_MAX_NP) / 2;
break;
}
-
+
/* Change the priority. */
- if (pthread_setprio(pthread_self(), sys_priority) >= 0)
+ if (pthread_setprio (pthread_self (), sys_priority) >= 0)
return 0;
else
/* Failed */
/* 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 ())
{
- if ((sys_priority = pthread_getprio(pthread_self())) >= 0)
- {
+ if ((sys_priority = pthread_getprio (pthread_self ())) >= 0)
+ {
if (sys_priority >= PRI_FG_MIN_NP
&& sys_priority <= PRI_FG_MAX_NP)
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 ())
- pthread_yield();
+ pthread_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);
+ 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 ())
{
- pthread_t self = pthread_self();
+ pthread_t self = pthread_self ();
return (objc_thread_t) pthread_getunique_np (&self);
}
else
- return (objc_thread_t)1;
+ 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 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)
{
void *value = NULL;
if (__gthread_active_p ())
{
- if ( !(pthread_getspecific(_objc_thread_storage, &value)) )
+ if (!(pthread_getspecific (_objc_thread_storage, &value)))
return value;
return NULL;
/* 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));
-
- if (pthread_mutex_init((pthread_mutex_t *)mutex->backend,
- pthread_mutexattr_default))
- {
- objc_free(mutex->backend);
- mutex->backend = NULL;
- return -1;
- }
+ mutex->backend = objc_malloc (sizeof (pthread_mutex_t));
+
+ if (pthread_mutex_init ((pthread_mutex_t *) mutex->backend,
+ pthread_mutexattr_default))
+ {
+ objc_free (mutex->backend);
+ mutex->backend = NULL;
+ return -1;
+ }
}
return 0;
/* 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 ())
{
- if (pthread_mutex_destroy((pthread_mutex_t *)mutex->backend))
- return -1;
+ if (pthread_mutex_destroy ((pthread_mutex_t *) mutex->backend))
+ return -1;
- objc_free(mutex->backend);
+ objc_free (mutex->backend);
mutex->backend = NULL;
}
/* 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 ())
- return pthread_mutex_lock((pthread_mutex_t *)mutex->backend);
+ return pthread_mutex_lock ((pthread_mutex_t *) mutex->backend);
else
return 0;
}
/* 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) != 1)
+ && pthread_mutex_trylock ((pthread_mutex_t *) mutex->backend) != 1)
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 ())
- return pthread_mutex_unlock((pthread_mutex_t *)mutex->backend);
+ return pthread_mutex_unlock ((pthread_mutex_t *) mutex->backend);
else
return 0;
}
/* 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 ())
/* Unimplemented. */
/* 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 ())
/* Unimplemented. */
/* 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 ())
/* Unimplemented. */
/* 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 ())
/* Unimplemented. */
/* 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 ())
/* Unimplemented. */
}
static inline int
-__gthread_key_dtor (UNUSED (__gthread_key_t key), UNUSED (void *ptr))
-{
- /* Nothing needed. */
- return 0;
-}
-
-static inline int
__gthread_key_delete (UNUSED (__gthread_key_t key))
{
/* Operation is not supported. */
return 0;
}
+static inline int
+__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *mutex)
+{
+ if (__gthread_active_p ())
+ {
+ pthread_mutexattr_t attr;
+ int r;
+
+ r = pthread_mutexattr_create (&attr);
+ if (!r)
+ r = pthread_mutexattr_setkind_np (&attr, MUTEX_RECURSIVE_NP);
+ if (!r)
+ r = pthread_mutex_init (mutex, attr);
+ if (!r)
+ r = pthread_mutexattr_delete (&attr);
+ return r;
+ }
+}
+
+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 */
#undef UNUSED
+#endif
#endif /* ! GCC_GTHR_DCE_H */
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