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

   1 /* $OpenLDAP$ */
   2 /*
   3  * Copyright 1998,1999 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_PVT_THREAD_ATTR_DEFAULT          pthread_attr_default
  26 #  define LDAP_PVT_THREAD_CONDATTR_DEFAULT      pthread_condattr_default
  27 #  define LDAP_PVT_THREAD_MUTEXATTR_DEFAULT     pthread_mutexattr_default
  28 #else
  29 #  define LDAP_PVT_THREAD_ATTR_DEFAULT          NULL
  30 #  define LDAP_PVT_THREAD_CONDATTR_DEFAULT      NULL
  31 #  define LDAP_PVT_THREAD_MUTEXATTR_DEFAULT     NULL
  32 #endif
  33
  34
  35 int
  36 ldap_pvt_thread_initialize( void )
  37 {
  38 #if defined( LDAP_THREAD_CONCURRENCY ) && HAVE_PTHREAD_SETCONCURRENCY
  39         ldap_pvt_thread_set_concurrency( LDAP_THREAD_CONCURRENCY );
  40 #endif
  41         return 0;
  42 }
  43
  44 int
  45 ldap_pvt_thread_destroy( void )
  46 {
  47         return 0;
  48 }
  49
  50 #ifdef HAVE_PTHREAD_SETCONCURRENCY
  51 int
  52 ldap_pvt_thread_set_concurrency(int n)
  53 {
  54 #ifdef HAVE_PTHREAD_SETCONCURRENCY
  55         return pthread_setconcurrency( n );
  56 #elif HAVE_THR_SETCONCURRENCY
  57         return pthread_setconcurrency( n );
  58 #else
  59         return 0;
  60 #endif
  61 }
  62 #endif
  63
  64 #ifdef HAVE_PTHREAD_GETCONCURRENCY
  65 int
  66 ldap_pvt_thread_get_concurrency(void)
  67 {
  68 #ifdef HAVE_PTHREAD_GETCONCURRENCY
  69         return pthread_getconcurrency();
  70 #elif HAVE_THR_GETCONCURRENCY
  71         return pthread_getconcurrency();
  72 #else
  73         return 0;
  74 #endif
  75 }
  76 #endif
  77
  78 int
  79 ldap_pvt_thread_create( ldap_pvt_thread_t * thread,
  80         int detach,
  81         void *(*start_routine)( void * ),
  82         void *arg)
  83 {
  84         int rtn = pthread_create( thread, LDAP_PVT_THREAD_ATTR_DEFAULT,
  85                                   start_routine, arg );
  86
  87         if( detach ) {
  88 #ifdef HAVE_PTHREADS_FINAL
  89                 pthread_detach( *thread );
  90 #else
  91                 pthread_detach( thread );
  92 #endif
  93         }
  94         return rtn;
  95 }
  96
  97 void
  98 ldap_pvt_thread_exit( void *retval )
  99 {
 100         pthread_exit( retval );
 101 }
 102
 103 int
 104 ldap_pvt_thread_join( ldap_pvt_thread_t thread, void **thread_return )
 105 {
 106 #if !defined( HAVE_PTHREADS_FINAL )
 107         void *dummy;
 108         if (thread_return==NULL)
 109           thread_return=&dummy;
 110 #endif
 111         return pthread_join( thread, thread_return );
 112 }
 113
 114 int
 115 ldap_pvt_thread_kill( ldap_pvt_thread_t thread, int signo )
 116 {
 117 #ifdef HAVE_PTHREAD_KILL
 118         return pthread_kill( thread, signo );
 119 #else
 120         /* pthread package with DCE */
 121         if (kill( getpid(), signo )<0)
 122                 return errno;
 123         return 0;
 124 #endif
 125 }
 126
 127 int
 128 ldap_pvt_thread_yield( void )
 129 {
 130 #ifdef _POSIX_THREAD_IS_GNU_PTH
 131         sched_yield();
 132         return 0;
 133
 134 #elif HAVE_SCHED_YIELD
 135         return sched_yield();
 136
 137 #elif HAVE_PTHREAD_YIELD
 138         pthread_yield();
 139         return 0;
 140
 141 #elif HAVE_THR_YIELD
 142         return thr_yield();
 143
 144 #else
 145         return 0;
 146 #endif
 147 }
 148
 149 int
 150 ldap_pvt_thread_cond_init( ldap_pvt_thread_cond_t *cond )
 151 {
 152         return pthread_cond_init( cond, LDAP_PVT_THREAD_CONDATTR_DEFAULT );
 153 }
 154
 155 int
 156 ldap_pvt_thread_cond_destroy( ldap_pvt_thread_cond_t *cond )
 157 {
 158         return pthread_cond_destroy( cond );
 159 }
 160
 161 int
 162 ldap_pvt_thread_cond_signal( ldap_pvt_thread_cond_t *cond )
 163 {
 164         return pthread_cond_signal( cond );
 165 }
 166
 167 int
 168 ldap_pvt_thread_cond_broadcast( ldap_pvt_thread_cond_t *cond )
 169 {
 170         return pthread_cond_broadcast( cond );
 171 }
 172
 173 int
 174 ldap_pvt_thread_cond_wait( ldap_pvt_thread_cond_t *cond,
 175                       ldap_pvt_thread_mutex_t *mutex )
 176 {
 177         return pthread_cond_wait( cond, mutex );
 178 }
 179
 180 int
 181 ldap_pvt_thread_mutex_init( ldap_pvt_thread_mutex_t *mutex )
 182 {
 183         return pthread_mutex_init( mutex, LDAP_PVT_THREAD_MUTEXATTR_DEFAULT );
 184 }
 185
 186 int
 187 ldap_pvt_thread_mutex_destroy( ldap_pvt_thread_mutex_t *mutex )
 188 {
 189         return pthread_mutex_destroy( mutex );
 190 }
 191
 192 int
 193 ldap_pvt_thread_mutex_lock( ldap_pvt_thread_mutex_t *mutex )
 194 {
 195         return pthread_mutex_lock( mutex );
 196 }
 197
 198 int
 199 ldap_pvt_thread_mutex_trylock( ldap_pvt_thread_mutex_t *mutex )
 200 {
 201         return pthread_mutex_trylock( mutex );
 202 }
 203
 204 int
 205 ldap_pvt_thread_mutex_unlock( ldap_pvt_thread_mutex_t *mutex )
 206 {
 207         return pthread_mutex_unlock( mutex );
 208 }
 209
 210 #endif /* HAVE_PTHREADS */
 211