src/gallium/include/pipe/p_thread.h

   1 /**************************************************************************
   2  *
   3  * Copyright 1999-2006 Brian Paul
   4  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
   5  * All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  21  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  *
  24  **************************************************************************/
  25
  26
  27 /**
  28  * @file
  29  *
  30  * Thread, mutex, condition var and thread-specific data functions.
  31  */
  32
  33
  34 #ifndef _P_THREAD2_H_
  35 #define _P_THREAD2_H_
  36
  37
  38 #include "pipe/p_compiler.h"
  39
  40
  41 #if defined(PIPE_OS_LINUX)
  42
  43 #include <pthread.h> /* POSIX threads headers */
  44 #include <stdio.h> /* for perror() */
  45
  46 typedef pthread_t pipe_thread;
  47
  48 #define PIPE_THREAD_ROUTINE( name, param ) \
  49    void *name( void *param )
  50
  51 static INLINE pipe_thread pipe_thread_create( void *(* routine)( void *), void *param )
  52 {
  53    pipe_thread thread;
  54    if (pthread_create( &thread, NULL, routine, param ))
  55       return 0;
  56    return thread;
  57 }
  58
  59 static INLINE int pipe_thread_wait( pipe_thread thread )
  60 {
  61    return pthread_join( thread, NULL );
  62 }
  63
  64 static INLINE int pipe_thread_destroy( pipe_thread thread )
  65 {
  66    return pthread_detach( thread );
  67 }
  68
  69 typedef pthread_mutex_t pipe_mutex;
  70 typedef pthread_cond_t pipe_condvar;
  71
  72 #define pipe_static_mutex(mutex) \
  73    static pipe_mutex mutex = PTHREAD_MUTEX_INITIALIZER
  74
  75 #define pipe_mutex_init(mutex) \
  76    pthread_mutex_init(&(mutex), NULL)
  77
  78 #define pipe_mutex_destroy(mutex) \
  79    pthread_mutex_destroy(&(mutex))
  80
  81 #define pipe_mutex_lock(mutex) \
  82    (void) pthread_mutex_lock(&(mutex))
  83
  84 #define pipe_mutex_unlock(mutex) \
  85    (void) pthread_mutex_unlock(&(mutex))
  86
  87 #define pipe_static_condvar(mutex) \
  88    static pipe_condvar mutex = PTHREAD_COND_INITIALIZER
  89
  90 #define pipe_condvar_init(cond) \
  91    pthread_cond_init(&(cond), NULL)
  92
  93 #define pipe_condvar_destroy(cond) \
  94    pthread_cond_destroy(&(cond))
  95
  96 #define pipe_condvar_wait(cond, mutex) \
  97   pthread_cond_wait(&(cond), &(mutex))
  98
  99 #define pipe_condvar_signal(cond) \
 100   pthread_cond_signal(&(cond))
 101
 102 #define pipe_condvar_broadcast(cond) \
 103   pthread_cond_broadcast(&(cond))
 104
 105
 106 #elif defined(PIPE_SUBSYSTEM_WINDOWS_USER)
 107
 108 #include <windows.h>
 109
 110 typedef HANDLE pipe_thread;
 111
 112 #define PIPE_THREAD_ROUTINE( name, param ) \
 113    void * WINAPI name( void *param )
 114
 115 static INLINE pipe_thread pipe_thread_create( void *(WINAPI * routine)( void *), void *param )
 116 {
 117    DWORD id;
 118    return CreateThread( NULL, 0, (LPTHREAD_START_ROUTINE) routine, param, 0, &id );
 119 }
 120
 121 static INLINE int pipe_thread_wait( pipe_thread thread )
 122 {
 123    if (WaitForSingleObject( thread, INFINITE ) == WAIT_OBJECT_0)
 124       return 0;
 125    return -1;
 126 }
 127
 128 static INLINE int pipe_thread_destroy( pipe_thread thread )
 129 {
 130    if (CloseHandle( thread ))
 131       return 0;
 132    return -1;
 133 }
 134
 135 typedef CRITICAL_SECTION pipe_mutex;
 136
 137 #define pipe_static_mutex(name) \
 138    /*static*/ pipe_mutex name = {0,0,0,0,0,0}
 139
 140 #define pipe_mutex_init(name) \
 141    InitializeCriticalSection(&name)
 142
 143 #define pipe_mutex_destroy(name) \
 144    DeleteCriticalSection(&name)
 145
 146 #define pipe_mutex_lock(name) \
 147    EnterCriticalSection(&name)
 148
 149 #define pipe_mutex_unlock(name) \
 150    LeaveCriticalSection(&name)
 151
 152 /* XXX: dummy definitions, make it compile */
 153
 154 typedef unsigned pipe_condvar;
 155
 156 #define pipe_condvar_init(condvar) \
 157    (void) condvar
 158
 159 #define pipe_condvar_broadcast(condvar) \
 160    (void) condvar
 161
 162 #else
 163
 164 /** Dummy definitions */
 165
 166 typedef unsigned pipe_thread;
 167 typedef unsigned pipe_mutex;
 168 typedef unsigned pipe_condvar;
 169
 170 #define pipe_static_mutex(mutex) \
 171    static pipe_mutex mutex = 0
 172
 173 #define pipe_mutex_init(mutex) \
 174    (void) mutex
 175
 176 #define pipe_mutex_destroy(mutex) \
 177    (void) mutex
 178
 179 #define pipe_mutex_lock(mutex) \
 180    (void) mutex
 181
 182 #define pipe_mutex_unlock(mutex) \
 183    (void) mutex
 184
 185 #define pipe_static_condvar(condvar) \
 186    static unsigned condvar = 0
 187
 188 #define pipe_condvar_init(condvar) \
 189    (void) condvar
 190
 191 #define pipe_condvar_destroy(condvar) \
 192    (void) condvar
 193
 194 #define pipe_condvar_wait(condvar, mutex) \
 195    (void) condvar
 196
 197 #define pipe_condvar_signal(condvar) \
 198    (void) condvar
 199
 200 #define pipe_condvar_broadcast(condvar) \
 201    (void) condvar
 202
 203
 204 #endif  /* PIPE_OS_? */
 205
 206
 207
 208 /*
 209  * Thread-specific data.
 210  */
 211
 212 typedef struct {
 213 #if defined(PIPE_OS_LINUX)
 214    pthread_key_t key;
 215 #elif defined(PIPE_SUBSYSTEM_WINDOWS_USER)
 216    DWORD key;
 217 #endif
 218    int initMagic;
 219 } pipe_tsd;
 220
 221
 222 #define PIPE_TSD_INIT_MAGIC 0xff8adc98
 223
 224
 225 static INLINE void
 226 pipe_tsd_init(pipe_tsd *tsd)
 227 {
 228 #if defined(PIPE_OS_LINUX)
 229    if (pthread_key_create(&tsd->key, NULL/*free*/) != 0) {
 230       perror("pthread_key_create(): failed to allocate key for thread specific data");
 231       exit(-1);
 232    }
 233 #elif defined(PIPE_SUBSYSTEM_WINDOWS_USER)
 234    assert(0);
 235 #endif
 236    tsd->initMagic = PIPE_TSD_INIT_MAGIC;
 237 }
 238
 239 static INLINE void *
 240 pipe_tsd_get(pipe_tsd *tsd)
 241 {
 242    if (tsd->initMagic != (int) PIPE_TSD_INIT_MAGIC) {
 243       pipe_tsd_init(tsd);
 244    }
 245 #if defined(PIPE_OS_LINUX)
 246    return pthread_getspecific(tsd->key);
 247 #elif defined(PIPE_SUBSYSTEM_WINDOWS_USER)
 248    assert(0);
 249    return NULL;
 250 #else
 251    assert(0);
 252    return NULL;
 253 #endif
 254 }
 255
 256 static INLINE void
 257 pipe_tsd_set(pipe_tsd *tsd, void *value)
 258 {
 259    if (tsd->initMagic != (int) PIPE_TSD_INIT_MAGIC) {
 260       pipe_tsd_init(tsd);
 261    }
 262 #if defined(PIPE_OS_LINUX)
 263    if (pthread_setspecific(tsd->key, value) != 0) {
 264       perror("pthread_set_specific() failed");
 265       exit(-1);
 266    }
 267 #elif defined(PIPE_SUBSYSTEM_WINDOWS_USER)
 268    assert(0);
 269 #else
 270    assert(0);
 271 #endif
 272 }
 273
 274
 275
 276 #endif /* _P_THREAD2_H_ */