1 /* 2 * $Xorg: Xthreads.h,v 1.5 2001/02/09 02:03:23 xorgcvs Exp $ 3 * 4 * 5 Copyright 1993, 1998 The Open Group 6 7 Permission to use, copy, modify, distribute, and sell this software and its 8 documentation for any purpose is hereby granted without fee, provided that 9 the above copyright notice appear in all copies and that both that 10 copyright notice and this permission notice appear in supporting 11 documentation. 12 13 The above copyright notice and this permission notice shall be included in 14 all copies or substantial portions of the Software. 15 16 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 19 OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 20 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 21 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 22 23 Except as contained in this notice, the name of The Open Group shall not be 24 used in advertising or otherwise to promote the sale, use or other dealings 25 in 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> 45 typedef cthread_t xthread_t; 46 typedef struct condition xcondition_rec; 47 typedef 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> 69 typedef thread_t xthread_t; 70 typedef thread_key_t xthread_key_t; 71 typedef cond_t xcondition_rec; 72 typedef mutex_t xmutex_rec; 73 #if defined(__UNIXWARE__) 74 extern 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> 102 typedef DWORD xthread_t; 103 typedef DWORD xthread_key_t; 104 struct _xthread_waiter { 105 HANDLE sem; 106 struct _xthread_waiter *next; 107 }; 108 typedef struct { 109 CRITICAL_SECTION cs; 110 struct _xthread_waiter *waiters; 111 } xcondition_rec; 112 typedef 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) 136 extern 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> 170 typedef pthread_t xthread_t; 171 typedef pthread_key_t xthread_key_t; 172 typedef pthread_cond_t xcondition_rec; 173 typedef 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> 200 typedef thr_t xthread_t; 201 typedef thread_key_t xthread_key_t; 202 typedef cond_t xcondition_rec; 203 typedef 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> 226 typedef pthread_t xthread_t; 227 typedef pthread_key_t xthread_key_t; 228 typedef pthread_cond_t xcondition_rec; 229 typedef 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_) 260 static 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 */ 282 typedef xcondition_rec *xcondition_t; 283 typedef 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_ */ 317
