i686-w64-mingw32/bits/gthr.h

/* Threads compatibility routines for libgcc2.  */
/* Compile this one with gcc.  */
/* Copyright (C) 1997-2021 Free Software Foundation, Inc.

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.

GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.

You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
<http://www.gnu.org/licenses/>.  */

#ifndef _GLIBCXX_GCC_GTHR_H
#define _GLIBCXX_GCC_GTHR_H

#ifndef _GLIBCXX_HIDE_EXPORTS
#pragma GCC visibility push(default)
#endif

/* If this file is compiled with threads support, it must
       #define __GTHREADS 1
   to indicate that threads support is present.  Also it has define
   function
     int __gthread_active_p ()
   that returns 1 if thread system is active, 0 if not.

   The threads interface must define the following types:
     __gthread_key_t
     __gthread_once_t
     __gthread_mutex_t
     __gthread_recursive_mutex_t

   The threads interface must define the following macros:

     __GTHREAD_ONCE_INIT
                to initialize __gthread_once_t
     __GTHREAD_MUTEX_INIT
                to initialize __gthread_mutex_t to get a fast
                non-recursive mutex.
     __GTHREAD_MUTEX_INIT_FUNCTION
                to initialize __gthread_mutex_t to get a fast
                non-recursive mutex.
                Define this to a function which looks like this:
                  void __GTHREAD_MUTEX_INIT_FUNCTION (__gthread_mutex_t *)
                Some systems can't initialize a mutex without a
                function call.  Don't define __GTHREAD_MUTEX_INIT in this case.
     __GTHREAD_RECURSIVE_MUTEX_INIT
     __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION
                as above, but for a recursive mutex.

   The threads interface must define the following static functions:

     int __gthread_once (__gthread_once_t *once, void (*func) ())

     int __gthread_key_create (__gthread_key_t *keyp, void (*dtor) (void *))
     int __gthread_key_delete (__gthread_key_t key)

     void *__gthread_getspecific (__gthread_key_t key)
     int __gthread_setspecific (__gthread_key_t key, const void *ptr)

     int __gthread_mutex_destroy (__gthread_mutex_t *mutex);
     int __gthread_recursive_mutex_destroy (__gthread_recursive_mutex_t *mutex);

     int __gthread_mutex_lock (__gthread_mutex_t *mutex);
     int __gthread_mutex_trylock (__gthread_mutex_t *mutex);
     int __gthread_mutex_unlock (__gthread_mutex_t *mutex);

     int __gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *mutex);
     int __gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *mutex);
     int __gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *mutex);

   The following are supported in POSIX threads only. They are required to
   fix a deadlock in static initialization inside libsupc++. The header file
   gthr-posix.h defines a symbol __GTHREAD_HAS_COND to signify that these extra
   features are supported.

   Types:
     __gthread_cond_t

   Macros:
     __GTHREAD_COND_INIT
     __GTHREAD_COND_INIT_FUNCTION

   Interface:
     int __gthread_cond_broadcast (__gthread_cond_t *cond);
     int __gthread_cond_wait (__gthread_cond_t *cond, __gthread_mutex_t *mutex);
     int __gthread_cond_wait_recursive (__gthread_cond_t *cond,
                                        __gthread_recursive_mutex_t *mutex);

   All functions returning int should return zero on success or the error
   number.  If the operation is not supported, -1 is returned.

   If the following are also defined, you should
     #define __GTHREADS_CXX0X 1
   to enable the c++0x thread library.

   Types:
     __gthread_t
     __gthread_time_t

   Interface:
     int __gthread_create (__gthread_t *thread, void *(*func) (void*),
                           void *args);
     int __gthread_join (__gthread_t thread, void **value_ptr);
     int __gthread_detach (__gthread_t thread);
     int __gthread_equal (__gthread_t t1, __gthread_t t2);
     __gthread_t __gthread_self (void);
     int __gthread_yield (void);

     int __gthread_mutex_timedlock (__gthread_mutex_t *m,
                                    const __gthread_time_t *abs_timeout);
     int __gthread_recursive_mutex_timedlock (__gthread_recursive_mutex_t *m,
                                          const __gthread_time_t *abs_time);

     int __gthread_cond_signal (__gthread_cond_t *cond);
     int __gthread_cond_timedwait (__gthread_cond_t *cond,
                                   __gthread_mutex_t *mutex,
                                   const __gthread_time_t *abs_timeout);

*/

#if __GXX_WEAK__
/* The pe-coff weak support isn't fully compatible to ELF's weak.
   For static libraries it might would work, but as we need to deal
   with shared versions too, we disable it for mingw-targets.  */
#ifdef __MINGW32__
#undef _GLIBCXX_GTHREAD_USE_WEAK
#define _GLIBCXX_GTHREAD_USE_WEAK 0
#endif

#ifndef _GLIBCXX_GTHREAD_USE_WEAK
#define _GLIBCXX_GTHREAD_USE_WEAK 1
#endif
#endif
#include <bits/gthr-default.h>

#ifndef _GLIBCXX_HIDE_EXPORTS
#pragma GCC visibility pop
#endif

#endif /* ! _GLIBCXX_GCC_GTHR_H */
Revision:	1166
Committed:	Tue Oct 26 14:22:36 2021 UTC (4 years ago) by rossy
Content type:	text/x-chdr
File size:	5608 byte(s)
Log Message:	Daodan: Replace MinGW build env with an up-to-date MSYS2 env
#	Content
1	/* Threads compatibility routines for libgcc2. */
2	/* Compile this one with gcc. */
3	/* Copyright (C) 1997-2021 Free Software Foundation, Inc.
4
5	This file is part of GCC.
6
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 3, or (at your option) any later
10	version.
11
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.
16
17	Under Section 7 of GPL version 3, you are granted additional
18	permissions described in the GCC Runtime Library Exception, version
19	3.1, as published by the Free Software Foundation.
20
21	You should have received a copy of the GNU General Public License and
22	a copy of the GCC Runtime Library Exception along with this program;
23	see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
24	<http://www.gnu.org/licenses/>. */
25
26	#ifndef _GLIBCXX_GCC_GTHR_H
27	#define _GLIBCXX_GCC_GTHR_H
28
29	#ifndef _GLIBCXX_HIDE_EXPORTS
30	#pragma GCC visibility push(default)
31	#endif
32
33	/* If this file is compiled with threads support, it must
34	#define __GTHREADS 1
35	to indicate that threads support is present. Also it has define
36	function
37	int __gthread_active_p ()
38	that returns 1 if thread system is active, 0 if not.
39
40	The threads interface must define the following types:
41	__gthread_key_t
42	__gthread_once_t
43	__gthread_mutex_t
44	__gthread_recursive_mutex_t
45
46	The threads interface must define the following macros:
47
48	__GTHREAD_ONCE_INIT
49	to initialize __gthread_once_t
50	__GTHREAD_MUTEX_INIT
51	to initialize __gthread_mutex_t to get a fast
52	non-recursive mutex.
53	__GTHREAD_MUTEX_INIT_FUNCTION
54	to initialize __gthread_mutex_t to get a fast
55	non-recursive mutex.
56	Define this to a function which looks like this:
57	void __GTHREAD_MUTEX_INIT_FUNCTION (__gthread_mutex_t *)
58	Some systems can't initialize a mutex without a
59	function call. Don't define __GTHREAD_MUTEX_INIT in this case.
60	__GTHREAD_RECURSIVE_MUTEX_INIT
61	__GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION
62	as above, but for a recursive mutex.
63
64	The threads interface must define the following static functions:
65
66	int __gthread_once (__gthread_once_t once, void (func) ())
67
68	int __gthread_key_create (__gthread_key_t keyp, void (dtor) (void *))
69	int __gthread_key_delete (__gthread_key_t key)
70
71	void *__gthread_getspecific (__gthread_key_t key)
72	int __gthread_setspecific (__gthread_key_t key, const void *ptr)
73
74	int __gthread_mutex_destroy (__gthread_mutex_t *mutex);
75	int __gthread_recursive_mutex_destroy (__gthread_recursive_mutex_t *mutex);
76
77	int __gthread_mutex_lock (__gthread_mutex_t *mutex);
78	int __gthread_mutex_trylock (__gthread_mutex_t *mutex);
79	int __gthread_mutex_unlock (__gthread_mutex_t *mutex);
80
81	int __gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *mutex);
82	int __gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *mutex);
83	int __gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *mutex);
84
85	The following are supported in POSIX threads only. They are required to
86	fix a deadlock in static initialization inside libsupc++. The header file
87	gthr-posix.h defines a symbol __GTHREAD_HAS_COND to signify that these extra
88	features are supported.
89
90	Types:
91	__gthread_cond_t
92
93	Macros:
94	__GTHREAD_COND_INIT
95	__GTHREAD_COND_INIT_FUNCTION
96
97	Interface:
98	int __gthread_cond_broadcast (__gthread_cond_t *cond);
99	int __gthread_cond_wait (__gthread_cond_t cond, __gthread_mutex_t mutex);
100	int __gthread_cond_wait_recursive (__gthread_cond_t *cond,
101	__gthread_recursive_mutex_t *mutex);
102
103	All functions returning int should return zero on success or the error
104	number. If the operation is not supported, -1 is returned.
105
106	If the following are also defined, you should
107	#define __GTHREADS_CXX0X 1
108	to enable the c++0x thread library.
109
110	Types:
111	__gthread_t
112	__gthread_time_t
113
114	Interface:
115	int __gthread_create (__gthread_t thread, void (func) (void),
116	void *args);
117	int __gthread_join (__gthread_t thread, void **value_ptr);
118	int __gthread_detach (__gthread_t thread);
119	int __gthread_equal (__gthread_t t1, __gthread_t t2);
120	__gthread_t __gthread_self (void);
121	int __gthread_yield (void);
122
123	int __gthread_mutex_timedlock (__gthread_mutex_t *m,
124	const __gthread_time_t *abs_timeout);
125	int __gthread_recursive_mutex_timedlock (__gthread_recursive_mutex_t *m,
126	const __gthread_time_t *abs_time);
127
128	int __gthread_cond_signal (__gthread_cond_t *cond);
129	int __gthread_cond_timedwait (__gthread_cond_t *cond,
130	__gthread_mutex_t *mutex,
131	const __gthread_time_t *abs_timeout);
132
133	*/
134
135	#if __GXX_WEAK__
136	/* The pe-coff weak support isn't fully compatible to ELF's weak.
137	For static libraries it might would work, but as we need to deal
138	with shared versions too, we disable it for mingw-targets. */
139	#ifdef __MINGW32__
140	#undef _GLIBCXX_GTHREAD_USE_WEAK
141	#define _GLIBCXX_GTHREAD_USE_WEAK 0
142	#endif
143
144	#ifndef _GLIBCXX_GTHREAD_USE_WEAK
145	#define _GLIBCXX_GTHREAD_USE_WEAK 1
146	#endif
147	#endif
148	#include <bits/gthr-default.h>
149
150	#ifndef _GLIBCXX_HIDE_EXPORTS
151	#pragma GCC visibility pop
152	#endif
153
154	#endif /* ! _GLIBCXX_GCC_GTHR_H */