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1/*
2 * $Xorg: Xthreads.h,v 1.5 2001/02/09 02:03:23 xorgcvs Exp $
3 *
4 *
5Copyright 1993, 1998 The Open Group
6
7Permission to use, copy, modify, distribute, and sell this software and its
8documentation for any purpose is hereby granted without fee, provided that
9the above copyright notice appear in all copies and that both that
10copyright notice and this permission notice appear in supporting
11documentation.
12
13The above copyright notice and this permission notice shall be included in
14all copies or substantial portions of the Software.
15
16THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
20AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22
23Except as contained in this notice, the name of The Open Group shall not be
24used in advertising or otherwise to promote the sale, use or other dealings
25in this Software without prior written authorization from The Open Group.
26 * *
27 */
28/* $XFree86: Xthreads.h,v 3.10 2001/12/14 19:53:26 dawes Exp $ */
29
30#ifndef _XTHREADS_H_
31#define _XTHREADS_H_
32
33/* Redefine these to XtMalloc/XtFree or whatever you want before including
34 * this header file.
35 */
36#ifndef xmalloc
37#define xmalloc malloc
38#endif
39#ifndef xfree
40#define xfree free
41#endif
42
43#ifdef CTHREADS
44#include <cthreads.h>
45typedef cthread_t xthread_t;
46typedef struct condition xcondition_rec;
47typedef struct mutex xmutex_rec;
48#define xthread_init() cthread_init()
49#define xthread_self cthread_self
50#define xthread_fork(func,closure) cthread_fork(func,closure)
51#define xthread_yield() cthread_yield()
52#define xthread_exit(v) cthread_exit(v)
53#define xthread_set_name(t,str) cthread_set_name(t,str)
54#define xmutex_init(m) mutex_init(m)
55#define xmutex_clear(m) mutex_clear(m)
56#define xmutex_lock(m) mutex_lock(m)
57#define xmutex_unlock(m) mutex_unlock(m)
58#define xmutex_set_name(m,str) mutex_set_name(m,str)
59#define xcondition_init(cv) condition_init(cv)
60#define xcondition_clear(cv) condition_clear(cv)
61#define xcondition_wait(cv,m) condition_wait(cv,m)
62#define xcondition_signal(cv) condition_signal(cv)
63#define xcondition_broadcast(cv) condition_broadcast(cv)
64#define xcondition_set_name(cv,str) condition_set_name(cv,str)
65#else /* !CTHREADS */
66#if defined(SVR4) && !defined(__sgi) && !defined(_SEQUENT_)
67#include <thread.h>
68#include <synch.h>
69typedef thread_t xthread_t;
70typedef thread_key_t xthread_key_t;
71typedef cond_t xcondition_rec;
72typedef mutex_t xmutex_rec;
73#if defined(__UNIXWARE__)
74extern xthread_t (*_x11_thr_self)();
75#define xthread_self (_x11_thr_self)
76#else
77#define xthread_self thr_self
78#endif
79#define xthread_fork(func,closure) thr_create(NULL,0,func,closure,THR_NEW_LWP|THR_DETACHED,NULL)
80#define xthread_yield() thr_yield()
81#define xthread_exit(v) thr_exit(v)
82#define xthread_key_create(kp,d) thr_keycreate(kp,d)
83#ifdef sun
84#define xthread_key_delete(k) 0
85#else
86#define xthread_key_delete(k) thr_keydelete(k)
87#endif
88#define xthread_set_specific(k,v) thr_setspecific(k,v)
89#define xthread_get_specific(k,vp) thr_getspecific(k,vp)
90#define xmutex_init(m) mutex_init(m,USYNC_THREAD,0)
91#define xmutex_clear(m) mutex_destroy(m)
92#define xmutex_lock(m) mutex_lock(m)
93#define xmutex_unlock(m) mutex_unlock(m)
94#define xcondition_init(cv) cond_init(cv,USYNC_THREAD,0)
95#define xcondition_clear(cv) cond_destroy(cv)
96#define xcondition_wait(cv,m) cond_wait(cv,m)
97#define xcondition_signal(cv) cond_signal(cv)
98#define xcondition_broadcast(cv) cond_broadcast(cv)
99#else /* !SVR4 */
100#ifdef WIN32
101#include <X11/Xwindows.h>
102typedef DWORD xthread_t;
103typedef DWORD xthread_key_t;
104struct _xthread_waiter {
105 HANDLE sem;
106 struct _xthread_waiter *next;
107};
108typedef struct {
109 CRITICAL_SECTION cs;
110 struct _xthread_waiter *waiters;
111} xcondition_rec;
112typedef CRITICAL_SECTION xmutex_rec;
113#define xthread_init() _Xthread_init()
114#define xthread_self GetCurrentThreadId
115#define xthread_fork(func,closure) { \
116 DWORD _tmptid; \
117 CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)func, (LPVOID)closure, 0, \
118 &_tmptid); \
119}
120#define xthread_yield() Sleep(0)
121#define xthread_exit(v) ExitThread((DWORD)(v))
122#define xthread_key_create(kp,d) *(kp) = TlsAlloc()
123#define xthread_key_delete(k) TlsFree(k)
124#define xthread_set_specific(k,v) TlsSetValue(k,v)
125#define xthread_get_specific(k,vp) TlsGetValue(k)
126#define xmutex_init(m) InitializeCriticalSection(m)
127#define xmutex_clear(m) DeleteCriticalSection(m)
128#define _XMUTEX_NESTS
129#define xmutex_lock(m) EnterCriticalSection(m)
130#define xmutex_unlock(m) LeaveCriticalSection(m)
131#define xcondition_init(cv) { \
132 InitializeCriticalSection(&(cv)->cs); \
133 (cv)->waiters = NULL; \
134}
135#define xcondition_clear(cv) DeleteCriticalSection(&(cv)->cs)
136extern struct _xthread_waiter *_Xthread_waiter();
137#define xcondition_wait(cv,m) { \
138 struct _xthread_waiter *_tmpthr = _Xthread_waiter(); \
139 EnterCriticalSection(&(cv)->cs); \
140 _tmpthr->next = (cv)->waiters; \
141 (cv)->waiters = _tmpthr; \
142 LeaveCriticalSection(&(cv)->cs); \
143 LeaveCriticalSection(m); \
144 WaitForSingleObject(_tmpthr->sem, INFINITE); \
145 EnterCriticalSection(m); \
146}
147#define xcondition_signal(cv) { \
148 EnterCriticalSection(&(cv)->cs); \
149 if ((cv)->waiters) { \
150 ReleaseSemaphore((cv)->waiters->sem, 1, NULL); \
151 (cv)->waiters = (cv)->waiters->next; \
152 } \
153 LeaveCriticalSection(&(cv)->cs); \
154}
155#define xcondition_broadcast(cv) { \
156 struct _xthread_waiter *_tmpthr; \
157 EnterCriticalSection(&(cv)->cs); \
158 for (_tmpthr = (cv)->waiters; _tmpthr; _tmpthr = _tmpthr->next) \
159 ReleaseSemaphore(_tmpthr->sem, 1, NULL); \
160 (cv)->waiters = NULL; \
161 LeaveCriticalSection(&(cv)->cs); \
162}
163#else /* !WIN32 */
164#ifdef USE_TIS_SUPPORT
165/*
166 * TIS support is intended for thread safe libraries.
167 * This should not be used for general client programming.
168 */
169#include <tis.h>
170typedef pthread_t xthread_t;
171typedef pthread_key_t xthread_key_t;
172typedef pthread_cond_t xcondition_rec;
173typedef pthread_mutex_t xmutex_rec;
174#define xthread_self tis_self
175#define xthread_fork(func,closure) { pthread_t _tmpxthr; \
176 pthread_create(&_tmpxthr,NULL,func,closure); }
177#define xthread_yield() pthread_yield_np()
178#define xthread_exit(v) pthread_exit(v)
179#define xthread_key_create(kp,d) tis_key_create(kp,d)
180#define xthread_key_delete(k) tis_key_delete(k)
181#define xthread_set_specific(k,v) tis_setspecific(k,v)
182#define xthread_get_specific(k,vp) *(vp) = tis_getspecific(k)
183#define XMUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER
184#define xmutex_init(m) tis_mutex_init(m)
185#define xmutex_clear(m) tis_mutex_destroy(m)
186#define xmutex_lock(m) tis_mutex_lock(m)
187#define xmutex_unlock(m) tis_mutex_unlock(m)
188#define xcondition_init(c) tis_cond_init(c)
189#define xcondition_clear(c) tis_cond_destroy(c)
190#define xcondition_wait(c,m) tis_cond_wait(c,m)
191#define xcondition_signal(c) tis_cond_signal(c)
192#define xcondition_broadcast(c) tis_cond_broadcast(c)
193#else
194#ifdef USE_NBSD_THREADLIB
195/*
196 * NetBSD threadlib support is intended for thread safe libraries.
197 * This should not be used for general client programming.
198 */
199#include <threadlib.h>
200typedef thr_t xthread_t;
201typedef thread_key_t xthread_key_t;
202typedef cond_t xcondition_rec;
203typedef mutex_t xmutex_rec;
204#define xthread_self thr_self
205#define xthread_fork(func,closure) { thr_t _tmpxthr; \
206 /* XXX Create it detached? --thorpej */ \
207 thr_create(&_tmpxthr,NULL,func,closure); }
208#define xthread_yield() thr_yield()
209#define xthread_exit(v) thr_exit(v)
210#define xthread_key_create(kp,d) thr_keycreate(kp,d)
211#define xthread_key_delete(k) thr_keydelete(k)
212#define xthread_set_specific(k,v) thr_setspecific(k,v)
213#define xthread_get_specific(k,vp) *(vp) = thr_getspecific(k)
214#define XMUTEX_INITIALIZER MUTEX_INITIALIZER
215#define xmutex_init(m) mutex_init(m, 0)
216#define xmutex_clear(m) mutex_destroy(m)
217#define xmutex_lock(m) mutex_lock(m)
218#define xmutex_unlock(m) mutex_unlock(m)
219#define xcondition_init(c) cond_init(c, 0, 0)
220#define xcondition_clear(c) cond_destroy(c)
221#define xcondition_wait(c,m) cond_wait(c,m)
222#define xcondition_signal(c) cond_signal(c)
223#define xcondition_broadcast(c) cond_broadcast(c)
224#else
225#include <pthread.h>
226typedef pthread_t xthread_t;
227typedef pthread_key_t xthread_key_t;
228typedef pthread_cond_t xcondition_rec;
229typedef pthread_mutex_t xmutex_rec;
230#define xthread_self pthread_self
231#define xthread_yield() pthread_yield()
232#define xthread_exit(v) pthread_exit(v)
233#define xthread_set_specific(k,v) pthread_setspecific(k,v)
234#define xmutex_clear(m) pthread_mutex_destroy(m)
235#define xmutex_lock(m) pthread_mutex_lock(m)
236#define xmutex_unlock(m) pthread_mutex_unlock(m)
237#ifndef XPRE_STANDARD_API
238#define xthread_key_create(kp,d) pthread_key_create(kp,d)
239#define xthread_key_delete(k) pthread_key_delete(k)
240#define xthread_get_specific(k,vp) *(vp) = pthread_getspecific(k)
241#define xthread_fork(func,closure) { pthread_t _tmpxthr; \
242 pthread_create(&_tmpxthr,NULL,func,closure); }
243#define XMUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER
244#define xmutex_init(m) pthread_mutex_init(m, NULL)
245#define xcondition_init(c) pthread_cond_init(c, NULL)
246#else /* XPRE_STANDARD_API */
247#define xthread_key_create(kp,d) pthread_keycreate(kp,d)
248#define xthread_key_delete(k) 0
249#define xthread_get_specific(k,vp) pthread_getspecific(k,vp)
250#define xthread_fork(func,closure) { pthread_t _tmpxthr; \
251 pthread_create(&_tmpxthr,pthread_attr_default,func,closure); }
252#define xmutex_init(m) pthread_mutex_init(m, pthread_mutexattr_default)
253#define xcondition_init(c) pthread_cond_init(c, pthread_condattr_default)
254#endif /* XPRE_STANDARD_API */
255#define xcondition_clear(c) pthread_cond_destroy(c)
256#define xcondition_wait(c,m) pthread_cond_wait(c,m)
257#define xcondition_signal(c) pthread_cond_signal(c)
258#define xcondition_broadcast(c) pthread_cond_broadcast(c)
259#if defined(_DECTHREADS_)
260static xthread_t _X_no_thread_id;
261#define xthread_have_id(id) !pthread_equal(id, _X_no_thread_id)
262#define xthread_clear_id(id) id = _X_no_thread_id
263#define xthread_equal(id1,id2) pthread_equal(id1, id2)
264#endif /* _DECTHREADS_ */
265#if defined(__linux__)
266#define xthread_have_id(id) !pthread_equal(id, 0)
267#define xthread_clear_id(id) id = 0
268#define xthread_equal(id1,id2) pthread_equal(id1, id2)
269#endif /* linux */
270#if defined(_CMA_VENDOR_) && defined(_CMA__IBM) && (_CMA_VENDOR_ == _CMA__IBM)
271#ifdef DEBUG /* too much of a hack to enable normally */
272/* see also cma__obj_set_name() */
273#define xmutex_set_name(m,str) ((char**)(m)->field1)[5] = (str)
274#define xcondition_set_name(cv,str) ((char**)(cv)->field1)[5] = (str)
275#endif /* DEBUG */
276#endif /* _CMA_VENDOR_ == _CMA__IBM */
277#endif /* USE_NBSD_THREADLIB */
278#endif /* USE_TIS_SUPPORT */
279#endif /* WIN32 */
280#endif /* SVR4 */
281#endif /* CTHREADS */
282typedef xcondition_rec *xcondition_t;
283typedef xmutex_rec *xmutex_t;
284#ifndef xcondition_malloc
285#define xcondition_malloc() (xcondition_t)xmalloc(sizeof(xcondition_rec))
286#endif
287#ifndef xcondition_free
288#define xcondition_free(c) xfree((char *)c)
289#endif
290#ifndef xmutex_malloc
291#define xmutex_malloc() (xmutex_t)xmalloc(sizeof(xmutex_rec))
292#endif
293#ifndef xmutex_free
294#define xmutex_free(m) xfree((char *)m)
295#endif
296#ifndef xthread_have_id
297#define xthread_have_id(id) id
298#endif
299#ifndef xthread_clear_id
300#define xthread_clear_id(id) id = 0
301#endif
302#ifndef xthread_equal
303#define xthread_equal(id1,id2) ((id1) == (id2))
304#endif
305/* aids understood by some debuggers */
306#ifndef xthread_set_name
307#define xthread_set_name(t,str)
308#endif
309#ifndef xmutex_set_name
310#define xmutex_set_name(m,str)
311#endif
312#ifndef xcondition_set_name
313#define xcondition_set_name(cv,str)
314#endif
315
316#endif /* _XTHREADS_H_ */