i686-w64-mingw32/bits/gthr-single.h

/* Threads compatibility routines for libgcc2 and libobjc.  */
/* 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_SINGLE_H
#define _GLIBCXX_GCC_GTHR_SINGLE_H

/* Just provide compatibility for mutex handling.  */

typedef int __gthread_key_t;
typedef int __gthread_once_t;
typedef int __gthread_mutex_t;
typedef int __gthread_recursive_mutex_t;

#define __GTHREAD_ONCE_INIT 0
#define __GTHREAD_MUTEX_INIT 0
#define __GTHREAD_MUTEX_INIT_FUNCTION(mx) do {} while (0)
#define __GTHREAD_RECURSIVE_MUTEX_INIT 0

#define _GLIBCXX_UNUSED __attribute__((__unused__))

#ifdef _LIBOBJC

/* Thread local storage for a single thread */
static void *thread_local_storage = NULL;

/* Backend initialization functions */

/* Initialize the threads subsystem.  */
static inline int
__gthread_objc_init_thread_system (void)
{
  /* No thread support available */
  return -1;
}

/* Close the threads subsystem.  */
static inline int
__gthread_objc_close_thread_system (void)
{
  /* No thread support available */
  return -1;
}

/* Backend thread functions */

/* Create a new thread of execution.  */
static inline objc_thread_t
__gthread_objc_thread_detach (void (* func)(void *), void * arg _GLIBCXX_UNUSED)
{
  /* No thread support available */
  return NULL;
}

/* Set the current thread's priority.  */
static inline int
__gthread_objc_thread_set_priority (int priority _GLIBCXX_UNUSED)
{
  /* No thread support available */
  return -1;
}

/* Return the current thread's priority.  */
static inline int
__gthread_objc_thread_get_priority (void)
{
  return OBJC_THREAD_INTERACTIVE_PRIORITY;
}

/* Yield our process time to another thread.  */
static inline void
__gthread_objc_thread_yield (void)
{
  return;
}

/* Terminate the current thread.  */
static inline int
__gthread_objc_thread_exit (void)
{
  /* No thread support available */
  /* Should we really exit the program */
  /* exit (&__objc_thread_exit_status); */
  return -1;
}

/* Returns an integer value which uniquely describes a thread.  */
static inline objc_thread_t
__gthread_objc_thread_id (void)
{
  /* No thread support, use 1.  */
  return (objc_thread_t) 1;
}

/* Sets the thread's local storage pointer.  */
static inline int
__gthread_objc_thread_set_data (void *value)
{
  thread_local_storage = value;
  return 0;
}

/* Returns the thread's local storage pointer.  */
static inline void *
__gthread_objc_thread_get_data (void)
{
  return thread_local_storage;
}

/* Backend mutex functions */

/* Allocate a mutex.  */
static inline int
__gthread_objc_mutex_allocate (objc_mutex_t mutex _GLIBCXX_UNUSED)
{
  return 0;
}

/* Deallocate a mutex.  */
static inline int
__gthread_objc_mutex_deallocate (objc_mutex_t mutex _GLIBCXX_UNUSED)
{
  return 0;
}

/* Grab a lock on a mutex.  */
static inline int
__gthread_objc_mutex_lock (objc_mutex_t mutex _GLIBCXX_UNUSED)
{
  /* There can only be one thread, so we always get the lock */
  return 0;
}

/* Try to grab a lock on a mutex.  */
static inline int
__gthread_objc_mutex_trylock (objc_mutex_t mutex _GLIBCXX_UNUSED)
{
  /* There can only be one thread, so we always get the lock */
  return 0;
}

/* Unlock the mutex */
static inline int
__gthread_objc_mutex_unlock (objc_mutex_t mutex _GLIBCXX_UNUSED)
{
  return 0;
}

/* Backend condition mutex functions */

/* Allocate a condition.  */
static inline int
__gthread_objc_condition_allocate (objc_condition_t condition _GLIBCXX_UNUSED)
{
  return 0;
}

/* Deallocate a condition.  */
static inline int
__gthread_objc_condition_deallocate (objc_condition_t condition _GLIBCXX_UNUSED)
{
  return 0;
}

/* Wait on the condition */
static inline int
__gthread_objc_condition_wait (objc_condition_t condition _GLIBCXX_UNUSED,
                               objc_mutex_t mutex _GLIBCXX_UNUSED)
{
  return 0;
}

/* Wake up all threads waiting on this condition.  */
static inline int
__gthread_objc_condition_broadcast (objc_condition_t condition _GLIBCXX_UNUSED)
{
  return 0;
}

/* Wake up one thread waiting on this condition.  */
static inline int
__gthread_objc_condition_signal (objc_condition_t condition _GLIBCXX_UNUSED)
{
  return 0;
}

#else /* _LIBOBJC */

static inline int
__gthread_active_p (void)
{
  return 0;
}

static inline int
__gthread_once (__gthread_once_t *__once _GLIBCXX_UNUSED, void (*__func) (void) _GLIBCXX_UNUSED)
{
  return 0;
}

static inline int _GLIBCXX_UNUSED
__gthread_key_create (__gthread_key_t *__key _GLIBCXX_UNUSED, void (*__func) (void *) _GLIBCXX_UNUSED)
{
  return 0;
}

static int _GLIBCXX_UNUSED
__gthread_key_delete (__gthread_key_t __key _GLIBCXX_UNUSED)
{
  return 0;
}

static inline void *
__gthread_getspecific (__gthread_key_t __key _GLIBCXX_UNUSED)
{
  return 0;
}

static inline int
__gthread_setspecific (__gthread_key_t __key _GLIBCXX_UNUSED, const void *__v _GLIBCXX_UNUSED)
{
  return 0;
}

static inline int
__gthread_mutex_destroy (__gthread_mutex_t *__mutex _GLIBCXX_UNUSED)
{
  return 0;
}

static inline int
__gthread_mutex_lock (__gthread_mutex_t *__mutex _GLIBCXX_UNUSED)
{
  return 0;
}

static inline int
__gthread_mutex_trylock (__gthread_mutex_t *__mutex _GLIBCXX_UNUSED)
{
  return 0;
}

static inline int
__gthread_mutex_unlock (__gthread_mutex_t *__mutex _GLIBCXX_UNUSED)
{
  return 0;
}

static inline int
__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex)
{
  return __gthread_mutex_lock (__mutex);
}

static inline int
__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex)
{
  return __gthread_mutex_trylock (__mutex);
}

static inline int
__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex)
{
  return __gthread_mutex_unlock (__mutex);
}

static inline int
__gthread_recursive_mutex_destroy (__gthread_recursive_mutex_t *__mutex)
{
  return __gthread_mutex_destroy (__mutex);
}

#endif /* _LIBOBJC */

#undef _GLIBCXX_UNUSED

#endif /* ! _GLIBCXX_GCC_GTHR_SINGLE_H */
Revision:	1166
Committed:	Tue Oct 26 14:22:36 2021 UTC (4 years ago) by rossy
Content type:	text/x-chdr
File size:	6808 byte(s)
Log Message:	Daodan: Replace MinGW build env with an up-to-date MSYS2 env
#	Content
1	/* Threads compatibility routines for libgcc2 and libobjc. */
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_SINGLE_H
27	#define _GLIBCXX_GCC_GTHR_SINGLE_H
28
29	/* Just provide compatibility for mutex handling. */
30
31	typedef int __gthread_key_t;
32	typedef int __gthread_once_t;
33	typedef int __gthread_mutex_t;
34	typedef int __gthread_recursive_mutex_t;
35
36	#define __GTHREAD_ONCE_INIT 0
37	#define __GTHREAD_MUTEX_INIT 0
38	#define __GTHREAD_MUTEX_INIT_FUNCTION(mx) do {} while (0)
39	#define __GTHREAD_RECURSIVE_MUTEX_INIT 0
40
41	#define _GLIBCXX_UNUSED __attribute__((__unused__))
42
43	#ifdef _LIBOBJC
44
45	/* Thread local storage for a single thread */
46	static void *thread_local_storage = NULL;
47
48	/* Backend initialization functions */
49
50	/* Initialize the threads subsystem. */
51	static inline int
52	__gthread_objc_init_thread_system (void)
53	{
54	/* No thread support available */
55	return -1;
56	}
57
58	/* Close the threads subsystem. */
59	static inline int
60	__gthread_objc_close_thread_system (void)
61	{
62	/* No thread support available */
63	return -1;
64	}
65
66	/* Backend thread functions */
67
68	/* Create a new thread of execution. */
69	static inline objc_thread_t
70	__gthread_objc_thread_detach (void (* func)(void ), void arg _GLIBCXX_UNUSED)
71	{
72	/* No thread support available */
73	return NULL;
74	}
75
76	/* Set the current thread's priority. */
77	static inline int
78	__gthread_objc_thread_set_priority (int priority _GLIBCXX_UNUSED)
79	{
80	/* No thread support available */
81	return -1;
82	}
83
84	/* Return the current thread's priority. */
85	static inline int
86	__gthread_objc_thread_get_priority (void)
87	{
88	return OBJC_THREAD_INTERACTIVE_PRIORITY;
89	}
90
91	/* Yield our process time to another thread. */
92	static inline void
93	__gthread_objc_thread_yield (void)
94	{
95	return;
96	}
97
98	/* Terminate the current thread. */
99	static inline int
100	__gthread_objc_thread_exit (void)
101	{
102	/* No thread support available */
103	/* Should we really exit the program */
104	/* exit (&__objc_thread_exit_status); */
105	return -1;
106	}
107
108	/* Returns an integer value which uniquely describes a thread. */
109	static inline objc_thread_t
110	__gthread_objc_thread_id (void)
111	{
112	/* No thread support, use 1. */
113	return (objc_thread_t) 1;
114	}
115
116	/* Sets the thread's local storage pointer. */
117	static inline int
118	__gthread_objc_thread_set_data (void *value)
119	{
120	thread_local_storage = value;
121	return 0;
122	}
123
124	/* Returns the thread's local storage pointer. */
125	static inline void *
126	__gthread_objc_thread_get_data (void)
127	{
128	return thread_local_storage;
129	}
130
131	/* Backend mutex functions */
132
133	/* Allocate a mutex. */
134	static inline int
135	__gthread_objc_mutex_allocate (objc_mutex_t mutex _GLIBCXX_UNUSED)
136	{
137	return 0;
138	}
139
140	/* Deallocate a mutex. */
141	static inline int
142	__gthread_objc_mutex_deallocate (objc_mutex_t mutex _GLIBCXX_UNUSED)
143	{
144	return 0;
145	}
146
147	/* Grab a lock on a mutex. */
148	static inline int
149	__gthread_objc_mutex_lock (objc_mutex_t mutex _GLIBCXX_UNUSED)
150	{
151	/* There can only be one thread, so we always get the lock */
152	return 0;
153	}
154
155	/* Try to grab a lock on a mutex. */
156	static inline int
157	__gthread_objc_mutex_trylock (objc_mutex_t mutex _GLIBCXX_UNUSED)
158	{
159	/* There can only be one thread, so we always get the lock */
160	return 0;
161	}
162
163	/* Unlock the mutex */
164	static inline int
165	__gthread_objc_mutex_unlock (objc_mutex_t mutex _GLIBCXX_UNUSED)
166	{
167	return 0;
168	}
169
170	/* Backend condition mutex functions */
171
172	/* Allocate a condition. */
173	static inline int
174	__gthread_objc_condition_allocate (objc_condition_t condition _GLIBCXX_UNUSED)
175	{
176	return 0;
177	}
178
179	/* Deallocate a condition. */
180	static inline int
181	__gthread_objc_condition_deallocate (objc_condition_t condition _GLIBCXX_UNUSED)
182	{
183	return 0;
184	}
185
186	/* Wait on the condition */
187	static inline int
188	__gthread_objc_condition_wait (objc_condition_t condition _GLIBCXX_UNUSED,
189	objc_mutex_t mutex _GLIBCXX_UNUSED)
190	{
191	return 0;
192	}
193
194	/* Wake up all threads waiting on this condition. */
195	static inline int
196	__gthread_objc_condition_broadcast (objc_condition_t condition _GLIBCXX_UNUSED)
197	{
198	return 0;
199	}
200
201	/* Wake up one thread waiting on this condition. */
202	static inline int
203	__gthread_objc_condition_signal (objc_condition_t condition _GLIBCXX_UNUSED)
204	{
205	return 0;
206	}
207
208	#else /* _LIBOBJC */
209
210	static inline int
211	__gthread_active_p (void)
212	{
213	return 0;
214	}
215
216	static inline int
217	__gthread_once (__gthread_once_t __once _GLIBCXX_UNUSED, void (__func) (void) _GLIBCXX_UNUSED)
218	{
219	return 0;
220	}
221
222	static inline int _GLIBCXX_UNUSED
223	__gthread_key_create (__gthread_key_t __key _GLIBCXX_UNUSED, void (__func) (void *) _GLIBCXX_UNUSED)
224	{
225	return 0;
226	}
227
228	static int _GLIBCXX_UNUSED
229	__gthread_key_delete (__gthread_key_t __key _GLIBCXX_UNUSED)
230	{
231	return 0;
232	}
233
234	static inline void *
235	__gthread_getspecific (__gthread_key_t __key _GLIBCXX_UNUSED)
236	{
237	return 0;
238	}
239
240	static inline int
241	__gthread_setspecific (__gthread_key_t __key _GLIBCXX_UNUSED, const void *__v _GLIBCXX_UNUSED)
242	{
243	return 0;
244	}
245
246	static inline int
247	__gthread_mutex_destroy (__gthread_mutex_t *__mutex _GLIBCXX_UNUSED)
248	{
249	return 0;
250	}
251
252	static inline int
253	__gthread_mutex_lock (__gthread_mutex_t *__mutex _GLIBCXX_UNUSED)
254	{
255	return 0;
256	}
257
258	static inline int
259	__gthread_mutex_trylock (__gthread_mutex_t *__mutex _GLIBCXX_UNUSED)
260	{
261	return 0;
262	}
263
264	static inline int
265	__gthread_mutex_unlock (__gthread_mutex_t *__mutex _GLIBCXX_UNUSED)
266	{
267	return 0;
268	}
269
270	static inline int
271	__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex)
272	{
273	return __gthread_mutex_lock (__mutex);
274	}
275
276	static inline int
277	__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex)
278	{
279	return __gthread_mutex_trylock (__mutex);
280	}
281
282	static inline int
283	__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex)
284	{
285	return __gthread_mutex_unlock (__mutex);
286	}
287
288	static inline int
289	__gthread_recursive_mutex_destroy (__gthread_recursive_mutex_t *__mutex)
290	{
291	return __gthread_mutex_destroy (__mutex);
292	}
293
294	#endif /* _LIBOBJC */
295
296	#undef _GLIBCXX_UNUSED
297
298	#endif /* ! _GLIBCXX_GCC_GTHR_SINGLE_H */