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         pthread_attr_destroy(&attr);
 117
 118 #else
 119         rtn = pthread_create( thread, LDAP_INT_THREAD_ATTR_DEFAULT,
 120                 start_routine, arg );
 121
 122         if( detach ) {
 123                 pthread_detach( thread );
 124         }
 125 #endif
 126
 127         return rtn;
 128 }
 129
 130 void
 131 ldap_pvt_thread_exit( void *retval )
 132 {
 133         pthread_exit( retval );
 134 }
 135
 136 int
 137 ldap_pvt_thread_join( ldap_pvt_thread_t thread, void **thread_return )
 138 {
 139 #if !defined( HAVE_PTHREADS_FINAL )
 140         void *dummy;
 141         if (thread_return==NULL)
 142           thread_return=&dummy;
 143 #endif
 144         return pthread_join( thread, thread_return );
 145 }
 146
 147 int
 148 ldap_pvt_thread_kill( ldap_pvt_thread_t thread, int signo )
 149 {
 150 #ifdef HAVE_PTHREAD_KILL
 151         return pthread_kill( thread, signo );
 152 #else
 153         /* pthread package with DCE */
 154         if (kill( getpid(), signo )<0)
 155                 return errno;
 156         return 0;
 157 #endif
 158 }
 159
 160 int
 161 ldap_pvt_thread_yield( void )
 162 {
 163 #ifdef _POSIX_THREAD_IS_GNU_PTH
 164         sched_yield();
 165         return 0;
 166
 167 #elif HAVE_SCHED_YIELD
 168         return sched_yield();
 169
 170 #elif HAVE_PTHREAD_YIELD
 171         pthread_yield();
 172         return 0;
 173
 174 #elif HAVE_THR_YIELD
 175         return thr_yield();
 176
 177 #else
 178         return 0;
 179 #endif
 180 }
 181
 182 int
 183 ldap_pvt_thread_cond_init( ldap_pvt_thread_cond_t *cond )
 184 {
 185         return pthread_cond_init( cond, LDAP_INT_THREAD_CONDATTR_DEFAULT );
 186 }
 187
 188 int
 189 ldap_pvt_thread_cond_destroy( ldap_pvt_thread_cond_t *cond )
 190 {
 191         return pthread_cond_destroy( cond );
 192 }
 193
 194 int
 195 ldap_pvt_thread_cond_signal( ldap_pvt_thread_cond_t *cond )
 196 {
 197         return pthread_cond_signal( cond );
 198 }
 199
 200 int
 201 ldap_pvt_thread_cond_broadcast( ldap_pvt_thread_cond_t *cond )
 202 {
 203         return pthread_cond_broadcast( cond );
 204 }
 205
 206 int
 207 ldap_pvt_thread_cond_wait( ldap_pvt_thread_cond_t *cond,
 208                       ldap_pvt_thread_mutex_t *mutex )
 209 {
 210         return pthread_cond_wait( cond, mutex );
 211 }
 212
 213 int
 214 ldap_pvt_thread_mutex_init( ldap_pvt_thread_mutex_t *mutex )
 215 {
 216         return pthread_mutex_init( mutex, LDAP_INT_THREAD_MUTEXATTR_DEFAULT );
 217 }
 218
 219 int
 220 ldap_pvt_thread_mutex_destroy( ldap_pvt_thread_mutex_t *mutex )
 221 {
 222         return pthread_mutex_destroy( mutex );
 223 }
 224
 225 int
 226 ldap_pvt_thread_mutex_lock( ldap_pvt_thread_mutex_t *mutex )
 227 {
 228         return pthread_mutex_lock( mutex );
 229 }
 230
 231 int
 232 ldap_pvt_thread_mutex_trylock( ldap_pvt_thread_mutex_t *mutex )
 233 {
 234         return pthread_mutex_trylock( mutex );
 235 }
 236
 237 int
 238 ldap_pvt_thread_mutex_unlock( ldap_pvt_thread_mutex_t *mutex )
 239 {
 240         return pthread_mutex_unlock( mutex );
 241 }
 242
 243 #ifdef LDAP_THREAD_HAVE_RDWR
 244 #ifdef HAVE_PTHREAD_RWLOCK_DESTROY
 245 int
 246 ldap_pvt_thread_rdwr_init( ldap_pvt_thread_rdwr_t *rw )
 247 {
 248         return pthread_rwlock_init( rw, NULL );
 249 }
 250
 251 int
 252 ldap_pvt_thread_rdwr_destroy( ldap_pvt_thread_rdwr_t *rw )
 253 {
 254         return pthread_rwlock_destroy( rw );
 255 }
 256
 257 int ldap_pvt_thread_rdwr_rlock( ldap_pvt_thread_rdwr_t *rw )
 258 {
 259         return pthread_rwlock_rdlock( rw );
 260 }
 261
 262 int ldap_pvt_thread_rdwr_rtrylock( ldap_pvt_thread_rdwr_t *rw )
 263 {
 264         return pthread_rwlock_tryrdlock( rw );
 265 }
 266
 267 int ldap_pvt_thread_rdwr_runlock( ldap_pvt_thread_rdwr_t *rw )
 268 {
 269         return pthread_rwlock_unlock( rw );
 270 }
 271
 272 int ldap_pvt_thread_rdwr_wlock( ldap_pvt_thread_rdwr_t *rw )
 273 {
 274         return pthread_rwlock_wrlock( rw );
 275 }
 276
 277 int ldap_pvt_thread_rdwr_wtrylock( ldap_pvt_thread_rdwr_t *rw )
 278 {
 279         return pthread_rwlock_trywrlock( rw );
 280 }
 281
 282 int ldap_pvt_thread_rdwr_wunlock( ldap_pvt_thread_rdwr_t *rw )
 283 {
 284         return pthread_rwlock_unlock( rw );
 285 }
 286
 287 #endif /* HAVE_PTHREAD_RDLOCK_DESTROY */
 288 #endif /* LDAP_THREAD_HAVE_RDWR */
 289 #endif /* HAVE_PTHREADS */
 290