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)
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_solaris_h
30 #define __gthr_solaris_h
32 /* Solaris threads as found in Solaris 2.[456].
33 Actually these are Unix International (UI) threads, but I don't
34 know if anyone else implements these. */
41 typedef thread_key_t __gthread_key_t
;
47 typedef mutex_t __gthread_mutex_t
;
49 #define __GTHREAD_ONCE_INIT { DEFAULTMUTEX, 0 }
50 #define __GTHREAD_MUTEX_INIT DEFAULTMUTEX
52 #if SUPPORTS_WEAK && GTHREAD_USE_WEAK
54 #pragma weak thr_keycreate
55 #pragma weak thr_getspecific
56 #pragma weak thr_setspecific
57 #pragma weak thr_create
59 #pragma weak mutex_lock
60 #pragma weak mutex_trylock
61 #pragma weak mutex_unlock
63 /* This will not actually work in Solaris 2.5, since libc contains
64 dummy symbols of all thr_* routines. */
66 static void *__gthread_active_ptr
= &thr_create
;
71 return __gthread_active_ptr
!= 0;
74 #else /* not SUPPORTS_WEAK */
82 #endif /* SUPPORTS_WEAK */
85 __gthread_once (__gthread_once_t
*once
, void (*func
) ())
87 if (! __gthread_active_p ())
90 if (once
== 0 || func
== 0)
98 if (mutex_lock (&once
->mutex
) != 0)
105 mutex_unlock (&once
->mutex
);
111 __gthread_key_create (__gthread_key_t
*key
, void (*dtor
) (void *))
113 /* Solaris 2.5 contains thr_* routines no-op in libc, so test if we actually
114 got a reasonable key value, and if not, fail. */
116 if (thr_keycreate (key
, dtor
) == -1 || *key
== -1)
123 __gthread_key_dtor (__gthread_key_t key
, void *ptr
)
125 /* Nothing needed. */
130 __gthread_key_delete (__gthread_key_t key
)
137 __gthread_getspecific (__gthread_key_t key
)
140 if (thr_getspecific (key
, &ptr
) == 0)
147 __gthread_setspecific (__gthread_key_t key
, const void *ptr
)
149 return thr_setspecific (key
, (void *) ptr
);
153 __gthread_mutex_lock (__gthread_mutex_t
*mutex
)
155 if (__gthread_active_p ())
156 return mutex_lock (mutex
);
162 __gthread_mutex_trylock (__gthread_mutex_t
*mutex
)
164 if (__gthread_active_p ())
165 return mutex_trylock (mutex
);
171 __gthread_mutex_unlock (__gthread_mutex_t
*mutex
)
173 if (__gthread_active_p ())
174 return mutex_unlock (mutex
);
179 #endif /* not __gthr_solaris_h */