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_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;
  85 #if defined(HAVE_PTHREADS_FINAL) && defined(PTHREAD_CREATE_UNDETACHED)
  86         pthread_attr_t attr;
  87
  88         pthread_attr_init(&attr);
  89         if (!detach)
  90                 pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_UNDETACHED);
  91
  92         rtn = pthread_create( thread, &attr, start_routine, arg );
  93 #else
  94         rtn = pthread_create( thread, LDAP_PVT_THREAD_ATTR_DEFAULT,
  95                                   start_routine, arg );
  96 #endif
  97
  98         if( detach ) {
  99 #ifdef HAVE_PTHREADS_FINAL
 100                 pthread_detach( *thread );
 101 #else
 102                 pthread_detach( thread );
 103 #endif
 104         }
 105         return rtn;
 106 }
 107
 108 void
 109 ldap_pvt_thread_exit( void *retval )
 110 {
 111         pthread_exit( retval );
 112 }
 113
 114 int
 115 ldap_pvt_thread_join( ldap_pvt_thread_t thread, void **thread_return )
 116 {
 117 #if !defined( HAVE_PTHREADS_FINAL )
 118         void *dummy;
 119         if (thread_return==NULL)
 120           thread_return=&dummy;
 121 #endif
 122         return pthread_join( thread, thread_return );
 123 }
 124
 125 int
 126 ldap_pvt_thread_kill( ldap_pvt_thread_t thread, int signo )
 127 {
 128 #ifdef HAVE_PTHREAD_KILL
 129         return pthread_kill( thread, signo );
 130 #else
 131         /* pthread package with DCE */
 132         if (kill( getpid(), signo )<0)
 133                 return errno;
 134         return 0;
 135 #endif
 136 }
 137
 138 int
 139 ldap_pvt_thread_yield( void )
 140 {
 141 #ifdef _POSIX_THREAD_IS_GNU_PTH
 142         sched_yield();
 143         return 0;
 144
 145 #elif HAVE_SCHED_YIELD
 146         return sched_yield();
 147
 148 #elif HAVE_PTHREAD_YIELD
 149         pthread_yield();
 150         return 0;
 151
 152 #elif HAVE_THR_YIELD
 153         return thr_yield();
 154
 155 #else
 156         return 0;
 157 #endif
 158 }
 159
 160 int
 161 ldap_pvt_thread_cond_init( ldap_pvt_thread_cond_t *cond )
 162 {
 163         return pthread_cond_init( cond, LDAP_PVT_THREAD_CONDATTR_DEFAULT );
 164 }
 165
 166 int
 167 ldap_pvt_thread_cond_destroy( ldap_pvt_thread_cond_t *cond )
 168 {
 169         return pthread_cond_destroy( cond );
 170 }
 171
 172 int
 173 ldap_pvt_thread_cond_signal( ldap_pvt_thread_cond_t *cond )
 174 {
 175         return pthread_cond_signal( cond );
 176 }
 177
 178 int
 179 ldap_pvt_thread_cond_broadcast( ldap_pvt_thread_cond_t *cond )
 180 {
 181         return pthread_cond_broadcast( cond );
 182 }
 183
 184 int
 185 ldap_pvt_thread_cond_wait( ldap_pvt_thread_cond_t *cond,
 186                       ldap_pvt_thread_mutex_t *mutex )
 187 {
 188         return pthread_cond_wait( cond, mutex );
 189 }
 190
 191 int
 192 ldap_pvt_thread_mutex_init( ldap_pvt_thread_mutex_t *mutex )
 193 {
 194         return pthread_mutex_init( mutex, LDAP_PVT_THREAD_MUTEXATTR_DEFAULT );
 195 }
 196
 197 int
 198 ldap_pvt_thread_mutex_destroy( ldap_pvt_thread_mutex_t *mutex )
 199 {
 200         return pthread_mutex_destroy( mutex );
 201 }
 202
 203 int
 204 ldap_pvt_thread_mutex_lock( ldap_pvt_thread_mutex_t *mutex )
 205 {
 206         return pthread_mutex_lock( mutex );
 207 }
 208
 209 int
 210 ldap_pvt_thread_mutex_trylock( ldap_pvt_thread_mutex_t *mutex )
 211 {
 212         return pthread_mutex_trylock( mutex );
 213 }
 214
 215 int
 216 ldap_pvt_thread_mutex_unlock( ldap_pvt_thread_mutex_t *mutex )
 217 {
 218         return pthread_mutex_unlock( mutex );
 219 }
 220
 221 #endif /* HAVE_PTHREADS */
 222