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
  89         pthread_attr_init(&attr);
  90
  91 #if defined( PTHREAD_CREATE_JOINABLE ) || defined( PTHREAD_UNDETACHED )
  92         if (!detach) {
  93 #if defined( PTHREAD_CREATE_JOINABLE )
  94                 pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
  95 #else
  96                 pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_UNDETACHED);
  97 #endif
  98 #ifdef PTHREAD_CREATE_DETACHED
  99         } else {
 100                 pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
 101 #endif
 102         }
 103 #endif
 104
 105         rtn = pthread_create( thread, &attr, start_routine, arg );
 106
 107 #if !defined( PTHREAD_CREATE_JOINABLE ) && !defined( PTHREAD_UNDETACHED )
 108         if( detach ) {
 109                 (void) pthread_detach( *thread );
 110         }
 111 #endif
 112
 113 #else
 114         rtn = pthread_create( thread, LDAP_INT_THREAD_ATTR_DEFAULT,
 115                                   start_routine, arg );
 116
 117         if( detach ) {
 118                 pthread_detach( thread );
 119         }
 120 #endif
 121
 122         return rtn;
 123 }
 124
 125 void
 126 ldap_pvt_thread_exit( void *retval )
 127 {
 128         pthread_exit( retval );
 129 }
 130
 131 int
 132 ldap_pvt_thread_join( ldap_pvt_thread_t thread, void **thread_return )
 133 {
 134 #if !defined( HAVE_PTHREADS_FINAL )
 135         void *dummy;
 136         if (thread_return==NULL)
 137           thread_return=&dummy;
 138 #endif
 139         return pthread_join( thread, thread_return );
 140 }
 141
 142 int
 143 ldap_pvt_thread_kill( ldap_pvt_thread_t thread, int signo )
 144 {
 145 #ifdef HAVE_PTHREAD_KILL
 146         return pthread_kill( thread, signo );
 147 #else
 148         /* pthread package with DCE */
 149         if (kill( getpid(), signo )<0)
 150                 return errno;
 151         return 0;
 152 #endif
 153 }
 154
 155 int
 156 ldap_pvt_thread_yield( void )
 157 {
 158 #ifdef _POSIX_THREAD_IS_GNU_PTH
 159         sched_yield();
 160         return 0;
 161
 162 #elif HAVE_SCHED_YIELD
 163         return sched_yield();
 164
 165 #elif HAVE_PTHREAD_YIELD
 166         pthread_yield();
 167         return 0;
 168
 169 #elif HAVE_THR_YIELD
 170         return thr_yield();
 171
 172 #else
 173         return 0;
 174 #endif
 175 }
 176
 177 int
 178 ldap_pvt_thread_cond_init( ldap_pvt_thread_cond_t *cond )
 179 {
 180         return pthread_cond_init( cond, LDAP_INT_THREAD_CONDATTR_DEFAULT );
 181 }
 182
 183 int
 184 ldap_pvt_thread_cond_destroy( ldap_pvt_thread_cond_t *cond )
 185 {
 186         return pthread_cond_destroy( cond );
 187 }
 188
 189 int
 190 ldap_pvt_thread_cond_signal( ldap_pvt_thread_cond_t *cond )
 191 {
 192         return pthread_cond_signal( cond );
 193 }
 194
 195 int
 196 ldap_pvt_thread_cond_broadcast( ldap_pvt_thread_cond_t *cond )
 197 {
 198         return pthread_cond_broadcast( cond );
 199 }
 200
 201 int
 202 ldap_pvt_thread_cond_wait( ldap_pvt_thread_cond_t *cond,
 203                       ldap_pvt_thread_mutex_t *mutex )
 204 {
 205         return pthread_cond_wait( cond, mutex );
 206 }
 207
 208 int
 209 ldap_pvt_thread_mutex_init( ldap_pvt_thread_mutex_t *mutex )
 210 {
 211         return pthread_mutex_init( mutex, LDAP_INT_THREAD_MUTEXATTR_DEFAULT );
 212 }
 213
 214 int
 215 ldap_pvt_thread_mutex_destroy( ldap_pvt_thread_mutex_t *mutex )
 216 {
 217         return pthread_mutex_destroy( mutex );
 218 }
 219
 220 int
 221 ldap_pvt_thread_mutex_lock( ldap_pvt_thread_mutex_t *mutex )
 222 {
 223         return pthread_mutex_lock( mutex );
 224 }
 225
 226 int
 227 ldap_pvt_thread_mutex_trylock( ldap_pvt_thread_mutex_t *mutex )
 228 {
 229         return pthread_mutex_trylock( mutex );
 230 }
 231
 232 int
 233 ldap_pvt_thread_mutex_unlock( ldap_pvt_thread_mutex_t *mutex )
 234 {
 235         return pthread_mutex_unlock( mutex );
 236 }
 237
 238 #ifdef LDAP_THREAD_HAVE_RDWR
 239 #ifdef HAVE_PTHREAD_RWLOCK_DESTROY
 240 int
 241 ldap_pvt_thread_rdwr_init( ldap_pvt_thread_rdwr_t *rw )
 242 {
 243         return pthread_rwlock_init( rw, NULL );
 244 }
 245
 246 int
 247 ldap_pvt_thread_rdwr_destroy( ldap_pvt_thread_rdwr_t *rw )
 248 {
 249         return pthread_rwlock_destroy( rw );
 250 }
 251
 252 int ldap_pvt_thread_rdwr_rlock( ldap_pvt_thread_rdwr_t *rw )
 253 {
 254         return pthread_rwlock_rdlock( rw );
 255 }
 256
 257 int ldap_pvt_thread_rdwr_rtrylock( ldap_pvt_thread_rdwr_t *rw )
 258 {
 259         return pthread_rwlock_tryrdlock( rw );
 260 }
 261
 262 int ldap_pvt_thread_rdwr_runlock( ldap_pvt_thread_rdwr_t *rw )
 263 {
 264         return pthread_rwlock_unlock( rw );
 265 }
 266
 267 int ldap_pvt_thread_rdwr_wlock( ldap_pvt_thread_rdwr_t *rw )
 268 {
 269         return pthread_rwlock_wrlock( rw );
 270 }
 271
 272 int ldap_pvt_thread_rdwr_wtrylock( ldap_pvt_thread_rdwr_t *rw )
 273 {
 274         return pthread_rwlock_trywrlock( rw );
 275 }
 276
 277 int ldap_pvt_thread_rdwr_wunlock( ldap_pvt_thread_rdwr_t *rw )
 278 {
 279         return pthread_rwlock_unlock( rw );
 280 }
 281
 282 #endif /* HAVE_PTHREAD_RDLOCK_DESTROY */
 283 #endif /* LDAP_THREAD_HAVE_RDWR */
 284 #endif /* HAVE_PTHREADS */
 285