+/* thr_posix.c - wrapper around posix and posixish thread implementations. */
/* $OpenLDAP$ */
-/*
- * Copyright 1998,1999 The OpenLDAP Foundation, Redwood City, California, USA
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2008 The OpenLDAP Foundation.
* All rights reserved.
*
- * Redistribution and use in source and binary forms are permitted only
- * as authorized by the OpenLDAP Public License. A copy of this
- * license is available at http://www.OpenLDAP.org/license.html or
- * in file LICENSE in the top-level directory of the distribution.
- */
-
-/* thr_posix.c - wrapper around posix and posixish thread implementations.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
*/
#include "portable.h"
#include <ac/errno.h>
-#include "ldap_pvt_thread.h"
+#ifdef REPLACE_BROKEN_YIELD
+#ifndef HAVE_NANOSLEEP
+#include <ac/socket.h>
+#endif
+#include <ac/time.h>
+#endif
+#include "ldap_pvt_thread.h" /* Get the thread interface */
+#define LDAP_THREAD_IMPLEMENTATION
+#define LDAP_THREAD_RDWR_IMPLEMENTATION
+#include "ldap_thr_debug.h" /* May rename the symbols defined below */
-#if HAVE_PTHREADS_D4
-# define LDAP_PVT_THREAD_ATTR_DEFAULT pthread_attr_default
-# define LDAP_PVT_THREAD_CONDATTR_DEFAULT pthread_condattr_default
-# define LDAP_PVT_THREAD_MUTEXATTR_DEFAULT pthread_mutexattr_default
+#if HAVE_PTHREADS < 6
+# define LDAP_INT_THREAD_ATTR_DEFAULT pthread_attr_default
+# define LDAP_INT_THREAD_CONDATTR_DEFAULT pthread_condattr_default
+# define LDAP_INT_THREAD_MUTEXATTR_DEFAULT pthread_mutexattr_default
#else
-# define LDAP_PVT_THREAD_ATTR_DEFAULT NULL
-# define LDAP_PVT_THREAD_CONDATTR_DEFAULT NULL
-# define LDAP_PVT_THREAD_MUTEXATTR_DEFAULT NULL
+# define LDAP_INT_THREAD_ATTR_DEFAULT NULL
+# define LDAP_INT_THREAD_CONDATTR_DEFAULT NULL
+# define LDAP_INT_THREAD_MUTEXATTR_DEFAULT NULL
#endif
+#ifdef LDAP_THREAD_DEBUG
+# if defined LDAP_INT_THREAD_MUTEXATTR /* May be defined in CPPFLAGS */
+# elif defined HAVE_PTHREAD_KILL_OTHER_THREADS_NP
+ /* LinuxThreads hack */
+# define LDAP_INT_THREAD_MUTEXATTR PTHREAD_MUTEX_ERRORCHECK_NP
+# else
+# define LDAP_INT_THREAD_MUTEXATTR PTHREAD_MUTEX_ERRORCHECK
+# endif
+static pthread_mutexattr_t mutex_attr;
+# undef LDAP_INT_THREAD_MUTEXATTR_DEFAULT
+# define LDAP_INT_THREAD_MUTEXATTR_DEFAULT &mutex_attr
+#endif
int
-ldap_pvt_thread_initialize( void )
+ldap_int_thread_initialize( void )
{
-#if defined( LDAP_THREAD_CONCURRENCY ) && HAVE_PTHREAD_SETCONCURRENCY
- ldap_pvt_thread_set_concurrency( LDAP_THREAD_CONCURRENCY );
+#ifdef LDAP_INT_THREAD_MUTEXATTR
+ pthread_mutexattr_init( &mutex_attr );
+ pthread_mutexattr_settype( &mutex_attr, LDAP_INT_THREAD_MUTEXATTR );
#endif
return 0;
}
int
-ldap_pvt_thread_destroy( void )
+ldap_int_thread_destroy( void )
{
+#ifdef HAVE_PTHREAD_KILL_OTHER_THREADS_NP
+ /* LinuxThreads: kill clones */
+ pthread_kill_other_threads_np();
+#endif
+#ifdef LDAP_INT_THREAD_MUTEXATTR
+ pthread_mutexattr_destroy( &mutex_attr );
+#endif
return 0;
}
-#ifdef HAVE_PTHREAD_SETCONCURRENCY
+#ifdef LDAP_THREAD_HAVE_SETCONCURRENCY
int
ldap_pvt_thread_set_concurrency(int n)
{
#ifdef HAVE_PTHREAD_SETCONCURRENCY
return pthread_setconcurrency( n );
#elif HAVE_THR_SETCONCURRENCY
- return pthread_setconcurrency( n );
+ return thr_setconcurrency( n );
#else
return 0;
#endif
}
#endif
-#ifdef HAVE_PTHREAD_GETCONCURRENCY
+#ifdef LDAP_THREAD_HAVE_GETCONCURRENCY
int
ldap_pvt_thread_get_concurrency(void)
{
#ifdef HAVE_PTHREAD_GETCONCURRENCY
return pthread_getconcurrency();
#elif HAVE_THR_GETCONCURRENCY
- return pthread_getconcurrency();
+ return thr_getconcurrency();
#else
return 0;
#endif
}
#endif
+/* detachstate appeared in Draft 6, but without manifest constants.
+ * in Draft 7 they were called PTHREAD_CREATE_UNDETACHED and ...DETACHED.
+ * in Draft 8 on, ...UNDETACHED became ...JOINABLE.
+ */
+#ifndef PTHREAD_CREATE_JOINABLE
+#ifdef PTHREAD_CREATE_UNDETACHED
+#define PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED
+#else
+#define PTHREAD_CREATE_JOINABLE 0
+#endif
+#endif
+
+#ifndef PTHREAD_CREATE_DETACHED
+#define PTHREAD_CREATE_DETACHED 1
+#endif
+
int
ldap_pvt_thread_create( ldap_pvt_thread_t * thread,
int detach,
void *arg)
{
int rtn;
-#if defined(HAVE_PTHREADS_FINAL) && defined(PTHREAD_CREATE_UNDETACHED)
pthread_attr_t attr;
+/* Always create the thread attrs, so we can set stacksize if we need to */
+#if HAVE_PTHREADS > 5
pthread_attr_init(&attr);
- if (!detach)
- pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_UNDETACHED);
+#else
+ pthread_attr_create(&attr);
+#endif
- rtn = pthread_create( thread, &attr, start_routine, arg );
+#ifdef LDAP_PVT_THREAD_SET_STACK_SIZE
+ /* this should be tunable */
+ pthread_attr_setstacksize( &attr, LDAP_PVT_THREAD_STACK_SIZE );
+#endif
+
+#if HAVE_PTHREADS > 5
+ detach = detach ? PTHREAD_CREATE_DETACHED : PTHREAD_CREATE_JOINABLE;
+#if HAVE_PTHREADS == 6
+ pthread_attr_setdetachstate(&attr, &detach);
#else
- rtn = pthread_create( thread, LDAP_PVT_THREAD_ATTR_DEFAULT,
- start_routine, arg );
+ pthread_attr_setdetachstate(&attr, detach);
+#endif
#endif
- if( detach ) {
-#ifdef HAVE_PTHREADS_FINAL
- pthread_detach( *thread );
+#if HAVE_PTHREADS < 5
+ rtn = pthread_create( thread, attr, start_routine, arg );
#else
- pthread_detach( thread );
+ rtn = pthread_create( thread, &attr, start_routine, arg );
#endif
+#if HAVE_PTHREADS > 5
+ pthread_attr_destroy(&attr);
+#else
+ pthread_attr_delete(&attr);
+ if( detach ) {
+ pthread_detach( thread );
}
+#endif
+
+#if HAVE_PTHREADS < 7
+ if ( rtn < 0 ) rtn = errno;
+#endif
return rtn;
}
int
ldap_pvt_thread_join( ldap_pvt_thread_t thread, void **thread_return )
{
-#if !defined( HAVE_PTHREADS_FINAL )
+#if HAVE_PTHREADS < 7
void *dummy;
+
if (thread_return==NULL)
thread_return=&dummy;
-#endif
+
+ if ( pthread_join( thread, thread_return ) < 0 ) return errno;
+ return 0;
+#else
return pthread_join( thread, thread_return );
+#endif
}
int
ldap_pvt_thread_kill( ldap_pvt_thread_t thread, int signo )
{
-#ifdef HAVE_PTHREAD_KILL
+#if ( HAVE_PTHREAD_KILL && HAVE_PTHREADS > 6 )
+ /* MacOS 10.1 is detected as v10 but has no pthread_kill() */
return pthread_kill( thread, signo );
+#elif ( HAVE_PTHREAD_KILL && HAVE_PTHREADS > 4 )
+ if ( pthread_kill( thread, signo ) < 0 ) return errno;
+ return 0;
#else
/* pthread package with DCE */
if (kill( getpid(), signo )<0)
int
ldap_pvt_thread_yield( void )
{
-#ifdef _POSIX_THREAD_IS_GNU_PTH
- sched_yield();
+#ifdef REPLACE_BROKEN_YIELD
+#ifdef HAVE_NANOSLEEP
+ struct timespec t = { 0, 0 };
+ nanosleep(&t, NULL);
+#else
+ struct timeval tv = {0,0};
+ select( 0, NULL, NULL, NULL, &tv );
+#endif
+ return 0;
+#elif HAVE_THR_YIELD
+ thr_yield();
return 0;
-#elif HAVE_SCHED_YIELD
+#elif HAVE_PTHREADS == 10
return sched_yield();
-#elif HAVE_PTHREAD_YIELD
- pthread_yield();
+#elif defined(_POSIX_THREAD_IS_GNU_PTH)
+ sched_yield();
return 0;
-#elif HAVE_THR_YIELD
- return thr_yield();
-
+#elif HAVE_PTHREADS == 6
+ pthread_yield(NULL);
+ return 0;
#else
+ pthread_yield();
return 0;
-#endif
+#endif
}
int
ldap_pvt_thread_cond_init( ldap_pvt_thread_cond_t *cond )
{
- return pthread_cond_init( cond, LDAP_PVT_THREAD_CONDATTR_DEFAULT );
+#if HAVE_PTHREADS < 7
+ if ( pthread_cond_init( cond, LDAP_INT_THREAD_CONDATTR_DEFAULT ) < 0 )
+ return errno;
+ return 0;
+#else
+ return pthread_cond_init( cond, LDAP_INT_THREAD_CONDATTR_DEFAULT );
+#endif
}
int
ldap_pvt_thread_cond_destroy( ldap_pvt_thread_cond_t *cond )
{
+#if HAVE_PTHREADS < 7
+ if ( pthread_cond_destroy( cond ) < 0 ) return errno;
+ return 0;
+#else
return pthread_cond_destroy( cond );
+#endif
}
int
ldap_pvt_thread_cond_signal( ldap_pvt_thread_cond_t *cond )
{
+#if HAVE_PTHREADS < 7
+ if ( pthread_cond_signal( cond ) < 0 ) return errno;
+ return 0;
+#else
return pthread_cond_signal( cond );
+#endif
}
int
ldap_pvt_thread_cond_broadcast( ldap_pvt_thread_cond_t *cond )
{
+#if HAVE_PTHREADS < 7
+ if ( pthread_cond_broadcast( cond ) < 0 ) return errno;
+ return 0;
+#else
return pthread_cond_broadcast( cond );
+#endif
}
int
ldap_pvt_thread_cond_wait( ldap_pvt_thread_cond_t *cond,
ldap_pvt_thread_mutex_t *mutex )
{
+#if HAVE_PTHREADS < 7
+ if ( pthread_cond_wait( cond, mutex ) < 0 ) return errno;
+ return 0;
+#else
return pthread_cond_wait( cond, mutex );
+#endif
}
int
ldap_pvt_thread_mutex_init( ldap_pvt_thread_mutex_t *mutex )
{
- return pthread_mutex_init( mutex, LDAP_PVT_THREAD_MUTEXATTR_DEFAULT );
+#if HAVE_PTHREADS < 7
+ if ( pthread_mutex_init( mutex, LDAP_INT_THREAD_MUTEXATTR_DEFAULT )<0)
+ return errno;
+ return 0;
+#else
+ return pthread_mutex_init( mutex, LDAP_INT_THREAD_MUTEXATTR_DEFAULT );
+#endif
}
int
ldap_pvt_thread_mutex_destroy( ldap_pvt_thread_mutex_t *mutex )
{
+#if HAVE_PTHREADS < 7
+ if ( pthread_mutex_destroy( mutex ) < 0 ) return errno;
+ return 0;
+#else
return pthread_mutex_destroy( mutex );
+#endif
}
int
ldap_pvt_thread_mutex_lock( ldap_pvt_thread_mutex_t *mutex )
{
+#if HAVE_PTHREADS < 7
+ if ( pthread_mutex_lock( mutex ) < 0 ) return errno;
+ return 0;
+#else
return pthread_mutex_lock( mutex );
+#endif
}
int
ldap_pvt_thread_mutex_trylock( ldap_pvt_thread_mutex_t *mutex )
{
+#if HAVE_PTHREADS < 7
+ if ( pthread_mutex_trylock( mutex ) < 0 ) return errno;
+ return 0;
+#else
return pthread_mutex_trylock( mutex );
+#endif
}
int
ldap_pvt_thread_mutex_unlock( ldap_pvt_thread_mutex_t *mutex )
{
+#if HAVE_PTHREADS < 7
+ if ( pthread_mutex_unlock( mutex ) < 0 ) return errno;
+ return 0;
+#else
return pthread_mutex_unlock( mutex );
+#endif
+}
+
+ldap_pvt_thread_t ldap_pvt_thread_self( void )
+{
+ return pthread_self();
+}
+
+#ifdef LDAP_THREAD_HAVE_RDWR
+#ifdef HAVE_PTHREAD_RWLOCK_DESTROY
+int
+ldap_pvt_thread_rdwr_init( ldap_pvt_thread_rdwr_t *rw )
+{
+#if HAVE_PTHREADS < 7
+ if ( pthread_rwlock_init( rw, NULL ) < 0 ) return errno;
+ return 0;
+#else
+ return pthread_rwlock_init( rw, NULL );
+#endif
+}
+
+int
+ldap_pvt_thread_rdwr_destroy( ldap_pvt_thread_rdwr_t *rw )
+{
+#if HAVE_PTHREADS < 7
+ if ( pthread_rwlock_destroy( rw ) < 0 ) return errno;
+ return 0;
+#else
+ return pthread_rwlock_destroy( rw );
+#endif
+}
+
+int ldap_pvt_thread_rdwr_rlock( ldap_pvt_thread_rdwr_t *rw )
+{
+#if HAVE_PTHREADS < 7
+ if ( pthread_rwlock_rdlock( rw ) < 0 ) return errno;
+ return 0;
+#else
+ return pthread_rwlock_rdlock( rw );
+#endif
+}
+
+int ldap_pvt_thread_rdwr_rtrylock( ldap_pvt_thread_rdwr_t *rw )
+{
+#if HAVE_PTHREADS < 7
+ if ( pthread_rwlock_tryrdlock( rw ) < 0 ) return errno;
+ return 0;
+#else
+ return pthread_rwlock_tryrdlock( rw );
+#endif
+}
+
+int ldap_pvt_thread_rdwr_runlock( ldap_pvt_thread_rdwr_t *rw )
+{
+#if HAVE_PTHREADS < 7
+ if ( pthread_rwlock_unlock( rw ) < 0 ) return errno;
+ return 0;
+#else
+ return pthread_rwlock_unlock( rw );
+#endif
+}
+
+int ldap_pvt_thread_rdwr_wlock( ldap_pvt_thread_rdwr_t *rw )
+{
+#if HAVE_PTHREADS < 7
+ if ( pthread_rwlock_wrlock( rw ) < 0 ) return errno;
+ return 0;
+#else
+ return pthread_rwlock_wrlock( rw );
+#endif
+}
+
+int ldap_pvt_thread_rdwr_wtrylock( ldap_pvt_thread_rdwr_t *rw )
+{
+#if HAVE_PTHREADS < 7
+ if ( pthread_rwlock_trywrlock( rw ) < 0 ) return errno;
+ return 0;
+#else
+ return pthread_rwlock_trywrlock( rw );
+#endif
+}
+
+int ldap_pvt_thread_rdwr_wunlock( ldap_pvt_thread_rdwr_t *rw )
+{
+#if HAVE_PTHREADS < 7
+ if ( pthread_rwlock_unlock( rw ) < 0 ) return errno;
+ return 0;
+#else
+ return pthread_rwlock_unlock( rw );
+#endif
}
+#endif /* HAVE_PTHREAD_RWLOCK_DESTROY */
+#endif /* LDAP_THREAD_HAVE_RDWR */
#endif /* HAVE_PTHREADS */
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