git.sur5r.net Git - openldap/blob - libraries/libldap_r/thr_posix.c

   1 /* $OpenLDAP$ */
   2 /*
   3  * Copyright 1998-2000 The OpenLDAP Foundation, Redwood City, California, USA
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms are permitted only
   7  * as authorized by the OpenLDAP Public License.  A copy of this
   8  * license is available at http://www.OpenLDAP.org/license.html or
   9  * in file LICENSE in the top-level directory of the distribution.
  10  */
  11
  12 /* thr_posix.c - wrapper around posix and posixish thread implementations.
  13  */
  14
  15 #include "portable.h"
  16
  17 #if defined( HAVE_PTHREADS )
  18
  19 #include <ac/errno.h>
  20
  21 #include "ldap_pvt_thread.h"
  22
  23
  24 #if HAVE_PTHREADS_D4
  25 #  define LDAP_INT_THREAD_ATTR_DEFAULT          pthread_attr_default
  26 #  define LDAP_INT_THREAD_CONDATTR_DEFAULT      pthread_condattr_default
  27 #  define LDAP_INT_THREAD_MUTEXATTR_DEFAULT     pthread_mutexattr_default
  28 #else
  29 #  define LDAP_INT_THREAD_ATTR_DEFAULT          NULL
  30 #  define LDAP_INT_THREAD_CONDATTR_DEFAULT      NULL
  31 #  define LDAP_INT_THREAD_MUTEXATTR_DEFAULT     NULL
  32 #endif
  33
  34
  35 int
  36 ldap_int_thread_initialize( void )
  37 {
  38         return 0;
  39 }
  40
  41 int
  42 ldap_int_thread_destroy( void )
  43 {
  44 #ifdef HAVE_PTHREAD_KILL_OTHER_THREADS_NP
  45         /* LinuxThreads: kill clones */
  46         pthread_kill_other_threads_np();
  47 #endif
  48         return 0;
  49 }
  50
  51 #ifdef LDAP_THREAD_HAVE_SETCONCURRENCY
  52 int
  53 ldap_pvt_thread_set_concurrency(int n)
  54 {
  55 #ifdef HAVE_PTHREAD_SETCONCURRENCY
  56         return pthread_setconcurrency( n );
  57 #elif HAVE_THR_SETCONCURRENCY
  58         return thr_setconcurrency( n );
  59 #else
  60         return 0;
  61 #endif
  62 }
  63 #endif
  64
  65 #ifdef LDAP_THREAD_HAVE_GETCONCURRENCY
  66 int
  67 ldap_pvt_thread_get_concurrency(void)
  68 {
  69 #ifdef HAVE_PTHREAD_GETCONCURRENCY
  70         return pthread_getconcurrency();
  71 #elif HAVE_THR_GETCONCURRENCY
  72         return thr_getconcurrency();
  73 #else
  74         return 0;
  75 #endif
  76 }
  77 #endif
  78
  79 int
  80 ldap_pvt_thread_create( ldap_pvt_thread_t * thread,
  81         int detach,
  82         void *(*start_routine)( void * ),
  83         void *arg)
  84 {
  85         int rtn;
  86 #if defined( HAVE_PTHREADS_FINAL )
  87         pthread_attr_t attr;
  88         pthread_attr_init(&attr);
  89
  90 #if defined( PTHREAD_CREATE_JOINABLE ) || defined( PTHREAD_UNDETACHED )
  91         if (!detach) {
  92 #if defined( PTHREAD_CREATE_JOINABLE )
  93                 pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
  94 #else
  95                 pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_UNDETACHED);
  96 #endif
  97 #ifdef PTHREAD_CREATE_DETACHED
  98         } else {
  99                 pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
 100 #endif
 101         }
 102 #endif
 103
 104 #if defined(LDAP_PVT_THREAD_STACK_SIZE) && LDAP_PVT_THREAD_STACK_SIZE > 0
 105         /* this should be tunable */
 106         pthread_attr_setstacksize( &attr, LDAP_PVT_THREAD_STACK_SIZE );
 107 #endif
 108
 109         rtn = pthread_create( thread, &attr, start_routine, arg );
 110
 111 #if !defined( PTHREAD_CREATE_JOINABLE ) && !defined( PTHREAD_UNDETACHED )
 112         if( detach ) {
 113                 (void) pthread_detach( *thread );
 114         }
 115 #endif
 116
 117 #else
 118         rtn = pthread_create( thread, LDAP_INT_THREAD_ATTR_DEFAULT,
 119                 start_routine, arg );
 120
 121         if( detach ) {
 122                 pthread_detach( thread );
 123         }
 124 #endif
 125
 126         return rtn;
 127 }
 128
 129 void
 130 ldap_pvt_thread_exit( void *retval )
 131 {
 132         pthread_exit( retval );
 133 }
 134
 135 int
 136 ldap_pvt_thread_join( ldap_pvt_thread_t thread, void **thread_return )
 137 {
 138 #if !defined( HAVE_PTHREADS_FINAL )
 139         void *dummy;
 140         if (thread_return==NULL)
 141           thread_return=&dummy;
 142 #endif
 143         return pthread_join( thread, thread_return );
 144 }
 145
 146 int
 147 ldap_pvt_thread_kill( ldap_pvt_thread_t thread, int signo )
 148 {
 149 #ifdef HAVE_PTHREAD_KILL
 150         return pthread_kill( thread, signo );
 151 #else
 152         /* pthread package with DCE */
 153         if (kill( getpid(), signo )<0)
 154                 return errno;
 155         return 0;
 156 #endif
 157 }
 158
 159 int
 160 ldap_pvt_thread_yield( void )
 161 {
 162 #ifdef _POSIX_THREAD_IS_GNU_PTH
 163         sched_yield();
 164         return 0;
 165
 166 #elif HAVE_SCHED_YIELD
 167         return sched_yield();
 168
 169 #elif HAVE_PTHREAD_YIELD
 170         pthread_yield();
 171         return 0;
 172
 173 #elif HAVE_THR_YIELD
 174         return thr_yield();
 175
 176 #else
 177         return 0;
 178 #endif
 179 }
 180
 181 int
 182 ldap_pvt_thread_cond_init( ldap_pvt_thread_cond_t *cond )
 183 {
 184         return pthread_cond_init( cond, LDAP_INT_THREAD_CONDATTR_DEFAULT );
 185 }
 186
 187 int
 188 ldap_pvt_thread_cond_destroy( ldap_pvt_thread_cond_t *cond )
 189 {
 190         return pthread_cond_destroy( cond );
 191 }
 192
 193 int
 194 ldap_pvt_thread_cond_signal( ldap_pvt_thread_cond_t *cond )
 195 {
 196         return pthread_cond_signal( cond );
 197 }
 198
 199 int
 200 ldap_pvt_thread_cond_broadcast( ldap_pvt_thread_cond_t *cond )
 201 {
 202         return pthread_cond_broadcast( cond );
 203 }
 204
 205 int
 206 ldap_pvt_thread_cond_wait( ldap_pvt_thread_cond_t *cond,
 207                       ldap_pvt_thread_mutex_t *mutex )
 208 {
 209         return pthread_cond_wait( cond, mutex );
 210 }
 211
 212 int
 213 ldap_pvt_thread_mutex_init( ldap_pvt_thread_mutex_t *mutex )
 214 {
 215         return pthread_mutex_init( mutex, LDAP_INT_THREAD_MUTEXATTR_DEFAULT );
 216 }
 217
 218 int
 219 ldap_pvt_thread_mutex_destroy( ldap_pvt_thread_mutex_t *mutex )
 220 {
 221         return pthread_mutex_destroy( mutex );
 222 }
 223
 224 int
 225 ldap_pvt_thread_mutex_lock( ldap_pvt_thread_mutex_t *mutex )
 226 {
 227         return pthread_mutex_lock( mutex );
 228 }
 229
 230 int
 231 ldap_pvt_thread_mutex_trylock( ldap_pvt_thread_mutex_t *mutex )
 232 {
 233         return pthread_mutex_trylock( mutex );
 234 }
 235
 236 int
 237 ldap_pvt_thread_mutex_unlock( ldap_pvt_thread_mutex_t *mutex )
 238 {
 239         return pthread_mutex_unlock( mutex );
 240 }
 241
 242 #ifdef LDAP_THREAD_HAVE_RDWR
 243 #ifdef HAVE_PTHREAD_RWLOCK_DESTROY
 244 int
 245 ldap_pvt_thread_rdwr_init( ldap_pvt_thread_rdwr_t *rw )
 246 {
 247         return pthread_rwlock_init( rw, NULL );
 248 }
 249
 250 int
 251 ldap_pvt_thread_rdwr_destroy( ldap_pvt_thread_rdwr_t *rw )
 252 {
 253         return pthread_rwlock_destroy( rw );
 254 }
 255
 256 int ldap_pvt_thread_rdwr_rlock( ldap_pvt_thread_rdwr_t *rw )
 257 {
 258         return pthread_rwlock_rdlock( rw );
 259 }
 260
 261 int ldap_pvt_thread_rdwr_rtrylock( ldap_pvt_thread_rdwr_t *rw )
 262 {
 263         return pthread_rwlock_tryrdlock( rw );
 264 }
 265
 266 int ldap_pvt_thread_rdwr_runlock( ldap_pvt_thread_rdwr_t *rw )
 267 {
 268         return pthread_rwlock_unlock( rw );
 269 }
 270
 271 int ldap_pvt_thread_rdwr_wlock( ldap_pvt_thread_rdwr_t *rw )
 272 {
 273         return pthread_rwlock_wrlock( rw );
 274 }
 275
 276 int ldap_pvt_thread_rdwr_wtrylock( ldap_pvt_thread_rdwr_t *rw )
 277 {
 278         return pthread_rwlock_trywrlock( rw );
 279 }
 280
 281 int ldap_pvt_thread_rdwr_wunlock( ldap_pvt_thread_rdwr_t *rw )
 282 {
 283         return pthread_rwlock_unlock( rw );
 284 }
 285
 286 #endif /* HAVE_PTHREAD_RDLOCK_DESTROY */
 287 #endif /* LDAP_THREAD_HAVE_RDWR */
 288 #endif /* HAVE_PTHREADS */
 289