Add x prefix to v850e case for handling --with-cpu=v850e.
[official-gcc.git] / libobjc / thr-pthreads.c
blob2efdd15bc54120b69b26216adfec6ba981dc9478
1 /* GNU Objective C Runtime Thread Implementation for PCThreads under GNU/Linux.
2 Copyright (C) 1996, 1997 Free Software Foundation, Inc.
3 Contributed by Scott Christley <scottc@net-community.com>
4 Condition functions added by: Mircea Oancea <mircea@first.elcom.pub.ro>
6 This file is part of GNU CC.
8 GNU CC is free software; you can redistribute it and/or modify it under the
9 terms of the GNU General Public License as published by the Free Software
10 Foundation; either version 2, or (at your option) any later version.
12 GNU CC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
14 FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
15 details.
17 You should have received a copy of the GNU General Public License
18 along with GNU CC; see the file COPYING. If not, write to
19 the Free Software Foundation, 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
22 /* As a special exception, if you link this library with files compiled with
23 GCC to produce an executable, this does not cause the resulting executable
24 to be covered by the GNU General Public License. This exception does not
25 however invalidate any other reasons why the executable file might be
26 covered by the GNU General Public License. */
28 #include <pcthread.h>
29 #include <objc/thr.h>
30 #include "runtime.h"
32 /* Key structure for maintaining thread specific storage */
33 static pthread_key_t _objc_thread_storage;
35 /* Backend initialization functions */
37 /* Initialize the threads subsystem. */
38 int
39 __objc_init_thread_system(void)
41 /* Initialize the thread storage key */
42 return pthread_key_create(&_objc_thread_storage, NULL);
45 /* Close the threads subsystem. */
46 int
47 __objc_close_thread_system(void)
49 /* Destroy the thread storage key */
50 /* Not implemented yet */
51 /* return pthread_key_delete(&_objc_thread_storage); */
52 return 0;
55 /* Backend thread functions */
57 /* Create a new thread of execution. */
58 objc_thread_t
59 __objc_thread_detach(void (*func)(void *arg), void *arg)
61 objc_thread_t thread_id;
62 pthread_t new_thread_handle;
64 if ( !(pthread_create(&new_thread_handle, NULL, (void *)func, arg)) )
65 thread_id = *(objc_thread_t *)&new_thread_handle;
66 else
67 thread_id = NULL;
69 return thread_id;
72 /* Set the current thread's priority. */
73 int
74 __objc_thread_set_priority(int priority)
76 /* Not implemented yet */
77 return -1;
80 /* Return the current thread's priority. */
81 int
82 __objc_thread_get_priority(void)
84 /* Not implemented yet */
85 return OBJC_THREAD_INTERACTIVE_PRIORITY;
88 /* Yield our process time to another thread. */
89 void
90 __objc_thread_yield(void)
92 pthread_yield(NULL);
95 /* Terminate the current thread. */
96 int
97 __objc_thread_exit(void)
99 /* exit the thread */
100 pthread_exit(&__objc_thread_exit_status);
102 /* Failed if we reached here */
103 return -1;
106 /* Returns an integer value which uniquely describes a thread. */
107 objc_thread_t
108 __objc_thread_id(void)
110 pthread_t self = pthread_self();
112 return *(objc_thread_t *)&self;
115 /* Sets the thread's local storage pointer. */
117 __objc_thread_set_data(void *value)
119 return pthread_setspecific(_objc_thread_storage, value);
122 /* Returns the thread's local storage pointer. */
123 void *
124 __objc_thread_get_data(void)
126 void *value = NULL;
128 if ( !(pthread_getspecific(_objc_thread_storage, &value)) )
129 return value;
131 return NULL;
134 /* Backend mutex functions */
136 /* Allocate a mutex. */
138 __objc_mutex_allocate(objc_mutex_t mutex)
140 if (pthread_mutex_init((pthread_mutex_t *)(&(mutex->backend)), NULL))
141 return -1;
142 else
143 return 0;
146 /* Deallocate a mutex. */
148 __objc_mutex_deallocate(objc_mutex_t mutex)
150 if (pthread_mutex_destroy((pthread_mutex_t *)(&(mutex->backend))))
151 return -1;
152 else
153 return 0;
156 /* Grab a lock on a mutex. */
158 __objc_mutex_lock(objc_mutex_t mutex)
160 return pthread_mutex_lock((pthread_mutex_t *)(&(mutex->backend)));
163 /* Try to grab a lock on a mutex. */
165 __objc_mutex_trylock(objc_mutex_t mutex)
167 return pthread_mutex_trylock((pthread_mutex_t *)(&(mutex->backend)));
170 /* Unlock the mutex */
172 __objc_mutex_unlock(objc_mutex_t mutex)
174 return pthread_mutex_unlock((pthread_mutex_t *)(&(mutex->backend)));
177 /* Backend condition mutex functions */
179 /* Allocate a condition. */
181 __objc_condition_allocate(objc_condition_t condition)
183 if (pthread_cond_init((pthread_cond_t *)(&(condition->backend)), NULL))
184 return -1;
185 else
186 return 0;
189 /* Deallocate a condition. */
191 __objc_condition_deallocate(objc_condition_t condition)
193 return pthread_cond_destroy((pthread_cond_t *)(&(condition->backend)));
196 /* Wait on the condition */
198 __objc_condition_wait(objc_condition_t condition, objc_mutex_t mutex)
200 return pthread_cond_wait((pthread_cond_t *)(&(condition->backend)),
201 (pthread_mutex_t *)(&(mutex->backend)));
204 /* Wake up all threads waiting on this condition. */
206 __objc_condition_broadcast(objc_condition_t condition)
208 return pthread_cond_broadcast((pthread_cond_t *)(&(condition->backend)));
211 /* Wake up one thread waiting on this condition. */
213 __objc_condition_signal(objc_condition_t condition)
215 return pthread_cond_signal((pthread_cond_t *)(&(condition->backend)));
218 /* End of File */