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https://git.openldap.org/openldap/openldap.git
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435 lines
9.3 KiB
C
435 lines
9.3 KiB
C
/* thr_posix.c - wrapper around posix and posixish thread implementations. */
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/* $OpenLDAP$ */
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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
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*
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* Copyright 1998-2006 The OpenLDAP Foundation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted only as authorized by the OpenLDAP
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* Public License.
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*
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* A copy of this license is available in file LICENSE in the
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* top-level directory of the distribution or, alternatively, at
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* <http://www.OpenLDAP.org/license.html>.
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*/
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#include "portable.h"
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#if defined( HAVE_PTHREADS )
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#include <ac/errno.h>
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#include "ldap_pvt_thread.h" /* Get the thread interface */
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#define LDAP_THREAD_IMPLEMENTATION
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#define LDAP_THREAD_RDWR_IMPLEMENTATION
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#include "ldap_thr_debug.h" /* May rename the symbols defined below */
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#if HAVE_PTHREADS < 6
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# define LDAP_INT_THREAD_ATTR_DEFAULT pthread_attr_default
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# define LDAP_INT_THREAD_CONDATTR_DEFAULT pthread_condattr_default
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# define LDAP_INT_THREAD_MUTEXATTR_DEFAULT pthread_mutexattr_default
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#else
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# define LDAP_INT_THREAD_ATTR_DEFAULT NULL
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# define LDAP_INT_THREAD_CONDATTR_DEFAULT NULL
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# define LDAP_INT_THREAD_MUTEXATTR_DEFAULT NULL
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#endif
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#ifdef LDAP_THREAD_DEBUG
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# if defined LDAP_INT_THREAD_MUTEXATTR /* May be defined in CPPFLAGS */
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# elif defined HAVE_PTHREAD_KILL_OTHER_THREADS_NP
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/* LinuxThreads hack */
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# define LDAP_INT_THREAD_MUTEXATTR PTHREAD_MUTEX_ERRORCHECK_NP
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# else
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# define LDAP_INT_THREAD_MUTEXATTR PTHREAD_MUTEX_ERRORCHECK
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# endif
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static pthread_mutexattr_t mutex_attr;
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# undef LDAP_INT_THREAD_MUTEXATTR_DEFAULT
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# define LDAP_INT_THREAD_MUTEXATTR_DEFAULT &mutex_attr
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#endif
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int
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ldap_int_thread_initialize( void )
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{
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#ifdef LDAP_INT_THREAD_MUTEXATTR
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pthread_mutexattr_init( &mutex_attr );
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pthread_mutexattr_settype( &mutex_attr, LDAP_INT_THREAD_MUTEXATTR );
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#endif
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return 0;
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}
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int
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ldap_int_thread_destroy( void )
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{
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#ifdef HAVE_PTHREAD_KILL_OTHER_THREADS_NP
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/* LinuxThreads: kill clones */
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pthread_kill_other_threads_np();
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#endif
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#ifdef LDAP_INT_THREAD_MUTEXATTR
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pthread_mutexattr_destroy( &mutex_attr );
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#endif
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return 0;
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}
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#ifdef LDAP_THREAD_HAVE_SETCONCURRENCY
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int
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ldap_pvt_thread_set_concurrency(int n)
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{
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#ifdef HAVE_PTHREAD_SETCONCURRENCY
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return pthread_setconcurrency( n );
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#elif HAVE_THR_SETCONCURRENCY
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return thr_setconcurrency( n );
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#else
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return 0;
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#endif
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}
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#endif
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#ifdef LDAP_THREAD_HAVE_GETCONCURRENCY
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int
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ldap_pvt_thread_get_concurrency(void)
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{
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#ifdef HAVE_PTHREAD_GETCONCURRENCY
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return pthread_getconcurrency();
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#elif HAVE_THR_GETCONCURRENCY
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return thr_getconcurrency();
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#else
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return 0;
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#endif
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}
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#endif
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/* detachstate appeared in Draft 6, but without manifest constants.
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* in Draft 7 they were called PTHREAD_CREATE_UNDETACHED and ...DETACHED.
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* in Draft 8 on, ...UNDETACHED became ...JOINABLE.
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*/
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#ifndef PTHREAD_CREATE_JOINABLE
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#ifdef PTHREAD_CREATE_UNDETACHED
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#define PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED
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#else
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#define PTHREAD_CREATE_JOINABLE 0
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#endif
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#endif
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#ifndef PTHREAD_CREATE_DETACHED
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#define PTHREAD_CREATE_DETACHED 1
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#endif
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int
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ldap_pvt_thread_create( ldap_pvt_thread_t * thread,
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int detach,
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void *(*start_routine)( void * ),
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void *arg)
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{
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int rtn;
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pthread_attr_t attr;
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/* Always create the thread attrs, so we can set stacksize if we need to */
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#if HAVE_PTHREADS > 5
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pthread_attr_init(&attr);
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#else
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pthread_attr_create(&attr);
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#endif
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#ifdef LDAP_PVT_THREAD_SET_STACK_SIZE
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/* this should be tunable */
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pthread_attr_setstacksize( &attr, LDAP_PVT_THREAD_STACK_SIZE );
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#endif
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#if HAVE_PTHREADS > 5
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detach = detach ? PTHREAD_CREATE_DETACHED : PTHREAD_CREATE_JOINABLE;
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#if HAVE_PTHREADS == 6
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pthread_attr_setdetachstate(&attr, &detach);
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#else
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pthread_attr_setdetachstate(&attr, detach);
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#endif
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#endif
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#if HAVE_PTHREADS < 5
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rtn = pthread_create( thread, attr, start_routine, arg );
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#else
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rtn = pthread_create( thread, &attr, start_routine, arg );
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#endif
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#if HAVE_PTHREADS > 5
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pthread_attr_destroy(&attr);
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#else
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pthread_attr_delete(&attr);
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if( detach ) {
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pthread_detach( thread );
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}
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#endif
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#if HAVE_PTHREADS < 7
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if ( rtn < 0 ) rtn = errno;
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#endif
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return rtn;
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}
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void
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ldap_pvt_thread_exit( void *retval )
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{
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pthread_exit( retval );
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}
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int
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ldap_pvt_thread_join( ldap_pvt_thread_t thread, void **thread_return )
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{
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#if HAVE_PTHREADS < 7
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void *dummy;
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if (thread_return==NULL)
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thread_return=&dummy;
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if ( pthread_join( thread, thread_return ) < 0 ) return errno;
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return 0;
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#else
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return pthread_join( thread, thread_return );
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#endif
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}
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int
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ldap_pvt_thread_kill( ldap_pvt_thread_t thread, int signo )
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{
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#if ( HAVE_PTHREAD_KILL && HAVE_PTHREADS > 6 )
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/* MacOS 10.1 is detected as v10 but has no pthread_kill() */
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return pthread_kill( thread, signo );
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#elif ( HAVE_PTHREAD_KILL && HAVE_PTHREADS > 4 )
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if ( pthread_kill( thread, signo ) < 0 ) return errno;
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return 0;
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#else
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/* pthread package with DCE */
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if (kill( getpid(), signo )<0)
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return errno;
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return 0;
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#endif
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}
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int
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ldap_pvt_thread_yield( void )
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{
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#if HAVE_THR_YIELD
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return thr_yield();
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#elif HAVE_PTHREADS == 10
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return sched_yield();
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#elif defined(_POSIX_THREAD_IS_GNU_PTH)
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sched_yield();
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return 0;
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#elif HAVE_PTHREADS == 6
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pthread_yield(NULL);
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return 0;
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#else
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pthread_yield();
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return 0;
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#endif
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}
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int
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ldap_pvt_thread_cond_init( ldap_pvt_thread_cond_t *cond )
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{
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#if HAVE_PTHREADS < 7
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if ( pthread_cond_init( cond, LDAP_INT_THREAD_CONDATTR_DEFAULT ) < 0 )
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return errno;
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return 0;
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#else
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return pthread_cond_init( cond, LDAP_INT_THREAD_CONDATTR_DEFAULT );
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#endif
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}
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int
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ldap_pvt_thread_cond_destroy( ldap_pvt_thread_cond_t *cond )
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{
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#if HAVE_PTHREADS < 7
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if ( pthread_cond_destroy( cond ) < 0 ) return errno;
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return 0;
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#else
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return pthread_cond_destroy( cond );
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#endif
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}
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int
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ldap_pvt_thread_cond_signal( ldap_pvt_thread_cond_t *cond )
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{
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#if HAVE_PTHREADS < 7
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if ( pthread_cond_signal( cond ) < 0 ) return errno;
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return 0;
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#else
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return pthread_cond_signal( cond );
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#endif
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}
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int
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ldap_pvt_thread_cond_broadcast( ldap_pvt_thread_cond_t *cond )
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{
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#if HAVE_PTHREADS < 7
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if ( pthread_cond_broadcast( cond ) < 0 ) return errno;
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return 0;
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#else
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return pthread_cond_broadcast( cond );
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#endif
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}
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int
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ldap_pvt_thread_cond_wait( ldap_pvt_thread_cond_t *cond,
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ldap_pvt_thread_mutex_t *mutex )
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{
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#if HAVE_PTHREADS < 7
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if ( pthread_cond_wait( cond, mutex ) < 0 ) return errno;
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return 0;
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#else
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return pthread_cond_wait( cond, mutex );
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#endif
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}
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int
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ldap_pvt_thread_mutex_init( ldap_pvt_thread_mutex_t *mutex )
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{
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#if HAVE_PTHREADS < 7
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if ( pthread_mutex_init( mutex, LDAP_INT_THREAD_MUTEXATTR_DEFAULT )<0)
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return errno;
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return 0;
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#else
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return pthread_mutex_init( mutex, LDAP_INT_THREAD_MUTEXATTR_DEFAULT );
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#endif
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}
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int
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ldap_pvt_thread_mutex_destroy( ldap_pvt_thread_mutex_t *mutex )
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{
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#if HAVE_PTHREADS < 7
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if ( pthread_mutex_destroy( mutex ) < 0 ) return errno;
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return 0;
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#else
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return pthread_mutex_destroy( mutex );
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#endif
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}
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int
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ldap_pvt_thread_mutex_lock( ldap_pvt_thread_mutex_t *mutex )
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{
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#if HAVE_PTHREADS < 7
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if ( pthread_mutex_lock( mutex ) < 0 ) return errno;
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return 0;
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#else
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return pthread_mutex_lock( mutex );
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#endif
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}
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int
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ldap_pvt_thread_mutex_trylock( ldap_pvt_thread_mutex_t *mutex )
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{
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#if HAVE_PTHREADS < 7
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if ( pthread_mutex_trylock( mutex ) < 0 ) return errno;
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return 0;
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#else
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return pthread_mutex_trylock( mutex );
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#endif
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}
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int
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ldap_pvt_thread_mutex_unlock( ldap_pvt_thread_mutex_t *mutex )
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{
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#if HAVE_PTHREADS < 7
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if ( pthread_mutex_unlock( mutex ) < 0 ) return errno;
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return 0;
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#else
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return pthread_mutex_unlock( mutex );
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#endif
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}
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ldap_pvt_thread_t ldap_pvt_thread_self( void )
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{
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return pthread_self();
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}
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#ifdef LDAP_THREAD_HAVE_RDWR
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#ifdef HAVE_PTHREAD_RWLOCK_DESTROY
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int
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ldap_pvt_thread_rdwr_init( ldap_pvt_thread_rdwr_t *rw )
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{
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#if HAVE_PTHREADS < 7
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if ( pthread_rwlock_init( rw, NULL ) < 0 ) return errno;
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return 0;
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#else
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return pthread_rwlock_init( rw, NULL );
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#endif
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}
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int
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ldap_pvt_thread_rdwr_destroy( ldap_pvt_thread_rdwr_t *rw )
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{
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#if HAVE_PTHREADS < 7
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if ( pthread_rwlock_destroy( rw ) < 0 ) return errno;
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return 0;
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#else
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return pthread_rwlock_destroy( rw );
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#endif
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}
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int ldap_pvt_thread_rdwr_rlock( ldap_pvt_thread_rdwr_t *rw )
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{
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#if HAVE_PTHREADS < 7
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if ( pthread_rwlock_rdlock( rw ) < 0 ) return errno;
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return 0;
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#else
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return pthread_rwlock_rdlock( rw );
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#endif
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}
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int ldap_pvt_thread_rdwr_rtrylock( ldap_pvt_thread_rdwr_t *rw )
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{
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#if HAVE_PTHREADS < 7
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if ( pthread_rwlock_tryrdlock( rw ) < 0 ) return errno;
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return 0;
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#else
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return pthread_rwlock_tryrdlock( rw );
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#endif
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}
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int ldap_pvt_thread_rdwr_runlock( ldap_pvt_thread_rdwr_t *rw )
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{
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#if HAVE_PTHREADS < 7
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if ( pthread_rwlock_unlock( rw ) < 0 ) return errno;
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return 0;
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#else
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return pthread_rwlock_unlock( rw );
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#endif
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}
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int ldap_pvt_thread_rdwr_wlock( ldap_pvt_thread_rdwr_t *rw )
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{
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#if HAVE_PTHREADS < 7
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if ( pthread_rwlock_wrlock( rw ) < 0 ) return errno;
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return 0;
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#else
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return pthread_rwlock_wrlock( rw );
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#endif
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}
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int ldap_pvt_thread_rdwr_wtrylock( ldap_pvt_thread_rdwr_t *rw )
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{
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#if HAVE_PTHREADS < 7
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if ( pthread_rwlock_trywrlock( rw ) < 0 ) return errno;
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return 0;
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#else
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return pthread_rwlock_trywrlock( rw );
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#endif
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}
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int ldap_pvt_thread_rdwr_wunlock( ldap_pvt_thread_rdwr_t *rw )
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{
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#if HAVE_PTHREADS < 7
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if ( pthread_rwlock_unlock( rw ) < 0 ) return errno;
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return 0;
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#else
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return pthread_rwlock_unlock( rw );
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#endif
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}
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#endif /* HAVE_PTHREAD_RWLOCK_DESTROY */
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#endif /* LDAP_THREAD_HAVE_RDWR */
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#endif /* HAVE_PTHREADS */
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