* class.c (check_bitfield_decl): New function, split out from
[official-gcc.git] / gcc / gthr-posix.h
blob19231c3c464d61c34292fc43ba395c97ad44867c
1 /* Threads compatibily routines for libgcc2. */
2 /* Compile this one with gcc. */
3 /* Copyright (C) 1997 Free Software Foundation, Inc.
5 This file is part of GNU CC.
7 GNU CC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
10 any later version.
12 GNU CC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more 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 other files,
23 some of which are compiled with GCC, to produce an executable,
24 this library does not by itself cause the resulting executable
25 to be covered by the GNU General Public License.
26 This exception does not however invalidate any other reasons why
27 the executable file might be covered by the GNU General Public License. */
29 #ifndef __gthr_posix_h
30 #define __gthr_posix_h
32 /* POSIX threads specific definitions.
33 Easy, since the interface is just one-to-one mapping. */
35 #define __GTHREADS 1
37 #include <pthread.h>
39 typedef pthread_key_t __gthread_key_t;
40 typedef pthread_once_t __gthread_once_t;
41 typedef pthread_mutex_t __gthread_mutex_t;
43 #define __GTHREAD_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
44 #define __GTHREAD_ONCE_INIT PTHREAD_ONCE_INIT
46 #if SUPPORTS_WEAK && GTHREAD_USE_WEAK
48 #pragma weak pthread_once
49 #pragma weak pthread_key_create
50 #pragma weak pthread_key_delete
51 #pragma weak pthread_getspecific
52 #pragma weak pthread_setspecific
53 #pragma weak pthread_create
55 #pragma weak pthread_mutex_lock
56 #pragma weak pthread_mutex_trylock
57 #pragma weak pthread_mutex_unlock
59 static void *__gthread_active_ptr = &pthread_create;
61 static inline int
62 __gthread_active_p ()
64 return __gthread_active_ptr != 0;
67 #else /* not SUPPORTS_WEAK */
69 static inline int
70 __gthread_active_p ()
72 return 1;
75 #endif /* SUPPORTS_WEAK */
77 static inline int
78 __gthread_once (__gthread_once_t *once, void (*func) ())
80 if (__gthread_active_p ())
81 return pthread_once (once, func);
82 else
83 return -1;
86 static inline int
87 __gthread_key_create (__gthread_key_t *key, void (*dtor) (void *))
89 return pthread_key_create (key, dtor);
92 static inline int
93 __gthread_key_dtor (__gthread_key_t key, void *ptr)
95 /* Just reset the key value to zero. */
96 if (ptr)
97 return pthread_setspecific (key, 0);
98 else
99 return 0;
102 static inline int
103 __gthread_key_delete (__gthread_key_t key)
105 return pthread_key_delete (key);
108 static inline void *
109 __gthread_getspecific (__gthread_key_t key)
111 return pthread_getspecific (key);
114 static inline int
115 __gthread_setspecific (__gthread_key_t key, const void *ptr)
117 return pthread_setspecific (key, ptr);
120 static inline int
121 __gthread_mutex_lock (__gthread_mutex_t *mutex)
123 if (__gthread_active_p ())
124 return pthread_mutex_lock (mutex);
125 else
126 return 0;
129 static inline int
130 __gthread_mutex_trylock (__gthread_mutex_t *mutex)
132 if (__gthread_active_p ())
133 return pthread_mutex_trylock (mutex);
134 else
135 return 0;
138 static inline int
139 __gthread_mutex_unlock (__gthread_mutex_t *mutex)
141 if (__gthread_active_p ())
142 return pthread_mutex_unlock (mutex);
143 else
144 return 0;
147 #endif /* not __gthr_posix_h */