Imported GNU Classpath 0.90
[official-gcc.git] / gcc / gthr-tpf.h
blobe6951e1a01d82b2abf98b60b319cd60d8346aa91
1 /* Threads compatibility routines for libgcc2 and libobjc.
2 Compile this one with gcc.
3 Copyright (C) 2004, 2005 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
10 version.
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 for more details.
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
20 02110-1301, 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. */
30 /* TPF needs its own version of gthr-*.h because TPF always links to
31 the thread library. However, for performance reasons we still do not
32 want to issue thread api calls unless a check is made to see that we
33 are running as a thread. */
35 #ifndef GCC_GTHR_TPF_H
36 #define GCC_GTHR_TPF_H
38 /* POSIX threads specific definitions.
39 Easy, since the interface is just one-to-one mapping. */
41 #define __GTHREADS 1
43 /* Some implementations of <pthread.h> require this to be defined. */
44 #ifndef _REENTRANT
45 #define _REENTRANT 1
46 #endif
48 #include <pthread.h>
49 #include <unistd.h>
51 typedef pthread_key_t __gthread_key_t;
52 typedef pthread_once_t __gthread_once_t;
53 typedef pthread_mutex_t __gthread_mutex_t;
54 typedef pthread_mutex_t __gthread_recursive_mutex_t;
56 #if defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER)
57 #define __GTHREAD_RECURSIVE_MUTEX_INIT PTHREAD_RECURSIVE_MUTEX_INITIALIZER
58 #elif defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP)
59 #define __GTHREAD_RECURSIVE_MUTEX_INIT PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
60 #endif
62 #define __GTHREAD_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
63 #define __GTHREAD_ONCE_INIT PTHREAD_ONCE_INIT
65 #define NOTATHREAD 00
66 #define ECBBASEPTR (unsigned long int) *(unsigned int *)0x00000514u
67 #define ECBPG2PTR ECBBASEPTR + 0x1000
68 #define CE2THRCPTR *((unsigned char *)(ECBPG2PTR + 16))
69 #define __tpf_pthread_active() (CE2THRCPTR != NOTATHREAD)
71 #if SUPPORTS_WEAK && GTHREAD_USE_WEAK
72 # define __gthrw(name) \
73 static __typeof(name) __gthrw_ ## name __attribute__ ((__weakref__(#name)));
74 # define __gthrw_(name) __gthrw_ ## name
75 #else
76 # define __gthrw(name)
77 # define __gthrw_(name) name
78 #endif
80 __gthrw(pthread_once)
81 __gthrw(pthread_key_create)
82 __gthrw(pthread_key_delete)
83 __gthrw(pthread_getspecific)
84 __gthrw(pthread_setspecific)
85 __gthrw(pthread_create)
87 __gthrw(pthread_mutex_lock)
88 __gthrw(pthread_mutex_trylock)
89 __gthrw(pthread_mutex_unlock)
91 static inline int
92 __gthread_active_p (void)
94 return 1;
97 static inline int
98 __gthread_once (__gthread_once_t *once, void (*func) (void))
100 if (__tpf_pthread_active ())
101 return __gthrw_(pthread_once) (once, func);
102 else
103 return -1;
106 static inline int
107 __gthread_key_create (__gthread_key_t *key, void (*dtor) (void *))
109 if (__tpf_pthread_active ())
110 return __gthrw_(pthread_key_create) (key, dtor);
111 else
112 return -1;
115 static inline int
116 __gthread_key_delete (__gthread_key_t key)
118 if (__tpf_pthread_active ())
119 return __gthrw_(pthread_key_delete) (key);
120 else
121 return -1;
124 static inline void *
125 __gthread_getspecific (__gthread_key_t key)
127 if (__tpf_pthread_active ())
128 return __gthrw_(pthread_getspecific) (key);
129 else
130 return NULL;
133 static inline int
134 __gthread_setspecific (__gthread_key_t key, const void *ptr)
136 if (__tpf_pthread_active ())
137 return __gthrw_(pthread_setspecific) (key, ptr);
138 else
139 return -1;
142 static inline int
143 __gthread_mutex_lock (__gthread_mutex_t *mutex)
145 if (__tpf_pthread_active ())
146 return __gthrw_(pthread_mutex_lock) (mutex);
147 else
148 return 0;
151 static inline int
152 __gthread_mutex_trylock (__gthread_mutex_t *mutex)
154 if (__tpf_pthread_active ())
155 return __gthrw_(pthread_mutex_trylock) (mutex);
156 else
157 return 0;
160 static inline int
161 __gthread_mutex_unlock (__gthread_mutex_t *mutex)
163 if (__tpf_pthread_active ())
164 return __gthrw_(pthread_mutex_unlock) (mutex);
165 else
166 return 0;
169 static inline int
170 __gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *mutex)
172 if (__tpf_pthread_active ())
173 return __gthread_mutex_lock (mutex);
174 else
175 return 0;
178 static inline int
179 __gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *mutex)
181 if (__tpf_pthread_active ())
182 return __gthread_mutex_trylock (mutex);
183 else
184 return 0;
187 static inline int
188 __gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *mutex)
190 if (__tpf_pthread_active ())
191 return __gthread_mutex_unlock (mutex);
192 else
193 return 0;
196 #endif /* ! GCC_GTHR_TPF_H */