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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:35:32 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:35:32 +0000
commit5ea77a75dd2d2158401331879f3c8f47940a732c (patch)
treed89dc06e9f4850a900f161e25f84e922c4f86cc8 /libraries/libldap/thr_posix.c
parentInitial commit. (diff)
downloadopenldap-upstream/2.5.13+dfsg.tar.xz
openldap-upstream/2.5.13+dfsg.zip
Adding upstream version 2.5.13+dfsg.upstream/2.5.13+dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'libraries/libldap/thr_posix.c')
-rw-r--r--libraries/libldap/thr_posix.c411
1 files changed, 411 insertions, 0 deletions
diff --git a/libraries/libldap/thr_posix.c b/libraries/libldap/thr_posix.c
new file mode 100644
index 0000000..004dc0b
--- /dev/null
+++ b/libraries/libldap/thr_posix.c
@@ -0,0 +1,411 @@
+/* thr_posix.c - wrapper around posix and posixish thread implementations. */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * 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"
+
+#if defined( HAVE_PTHREADS )
+
+#ifdef __GLIBC__
+#undef _FEATURES_H
+#define _XOPEN_SOURCE 500 /* For pthread_setconcurrency() on glibc */
+#endif
+
+#include <ac/errno.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 */
+#include <signal.h> /* For pthread_kill() */
+
+extern int ldap_int_stackguard;
+
+#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_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
+
+static pthread_mutexattr_t mutex_attr_recursive;
+
+#if HAVE_PTHREADS < 7
+#define ERRVAL(val) ((val) < 0 ? errno : 0)
+#else
+#define ERRVAL(val) (val)
+#endif
+
+int
+ldap_int_thread_initialize( void )
+{
+#ifdef LDAP_INT_THREAD_MUTEXATTR
+ pthread_mutexattr_init( &mutex_attr );
+ pthread_mutexattr_settype( &mutex_attr, LDAP_INT_THREAD_MUTEXATTR );
+#endif
+ if (pthread_mutexattr_init(&mutex_attr_recursive))
+ return -1;
+ if (pthread_mutexattr_settype(&mutex_attr_recursive, PTHREAD_MUTEX_RECURSIVE))
+ return -1;
+ return 0;
+}
+
+int
+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
+ pthread_mutexattr_destroy( &mutex_attr_recursive );
+ return 0;
+}
+
+#ifdef LDAP_THREAD_HAVE_SETCONCURRENCY
+int
+ldap_pvt_thread_set_concurrency(int n)
+{
+#ifdef HAVE_PTHREAD_SETCONCURRENCY
+ return pthread_setconcurrency( n );
+#elif defined(HAVE_THR_SETCONCURRENCY)
+ return thr_setconcurrency( n );
+#else
+ return 0;
+#endif
+}
+#endif
+
+#ifdef LDAP_THREAD_HAVE_GETCONCURRENCY
+int
+ldap_pvt_thread_get_concurrency(void)
+{
+#ifdef HAVE_PTHREAD_GETCONCURRENCY
+ return pthread_getconcurrency();
+#elif defined(HAVE_THR_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 *(*start_routine)( void * ),
+ void *arg)
+{
+ int rtn;
+ 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);
+#else
+ pthread_attr_create(&attr);
+#endif
+
+#ifdef LDAP_PVT_THREAD_SET_STACK_SIZE
+ /* this should be tunable */
+ pthread_attr_setstacksize( &attr, LDAP_PVT_THREAD_STACK_SIZE );
+ if ( ldap_int_stackguard )
+ pthread_attr_setguardsize( &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
+ pthread_attr_setdetachstate(&attr, detach);
+#endif
+#endif
+
+#if HAVE_PTHREADS < 5
+ rtn = pthread_create( thread, attr, start_routine, arg );
+#else
+ 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;
+}
+
+void
+ldap_pvt_thread_exit( void *retval )
+{
+ pthread_exit( retval );
+}
+
+int
+ldap_pvt_thread_join( ldap_pvt_thread_t thread, void **thread_return )
+{
+#if HAVE_PTHREADS < 7
+ void *dummy;
+ if (thread_return==NULL)
+ thread_return=&dummy;
+#endif
+ return ERRVAL( pthread_join( thread, thread_return ) );
+}
+
+int
+ldap_pvt_thread_kill( ldap_pvt_thread_t thread, int signo )
+{
+#if defined(HAVE_PTHREAD_KILL) && HAVE_PTHREADS > 4
+ /* MacOS 10.1 is detected as v10 but has no pthread_kill() */
+ return ERRVAL( pthread_kill( thread, signo ) );
+#else
+ /* pthread package with DCE */
+ if (kill( getpid(), signo )<0)
+ return errno;
+ return 0;
+#endif
+}
+
+int
+ldap_pvt_thread_yield( void )
+{
+#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 defined(HAVE_THR_YIELD)
+ thr_yield();
+ return 0;
+
+#elif HAVE_PTHREADS == 10
+ return sched_yield();
+
+#elif defined(_POSIX_THREAD_IS_GNU_PTH)
+ sched_yield();
+ return 0;
+
+#elif HAVE_PTHREADS == 6
+ pthread_yield(NULL);
+ return 0;
+
+#else
+ pthread_yield();
+ return 0;
+#endif
+}
+
+int
+ldap_pvt_thread_cond_init( ldap_pvt_thread_cond_t *cond )
+{
+ return ERRVAL( pthread_cond_init(
+ cond, LDAP_INT_THREAD_CONDATTR_DEFAULT ) );
+}
+
+int
+ldap_pvt_thread_cond_destroy( ldap_pvt_thread_cond_t *cond )
+{
+ return ERRVAL( pthread_cond_destroy( cond ) );
+}
+
+int
+ldap_pvt_thread_cond_signal( ldap_pvt_thread_cond_t *cond )
+{
+ return ERRVAL( pthread_cond_signal( cond ) );
+}
+
+int
+ldap_pvt_thread_cond_broadcast( ldap_pvt_thread_cond_t *cond )
+{
+ return ERRVAL( pthread_cond_broadcast( cond ) );
+}
+
+int
+ldap_pvt_thread_cond_wait( ldap_pvt_thread_cond_t *cond,
+ ldap_pvt_thread_mutex_t *mutex )
+{
+ return ERRVAL( pthread_cond_wait( cond, mutex ) );
+}
+
+int
+ldap_pvt_thread_mutex_init( ldap_pvt_thread_mutex_t *mutex )
+{
+ return ERRVAL( pthread_mutex_init(
+ mutex, LDAP_INT_THREAD_MUTEXATTR_DEFAULT ) );
+}
+
+int
+ldap_pvt_thread_mutex_destroy( ldap_pvt_thread_mutex_t *mutex )
+{
+ return ERRVAL( pthread_mutex_destroy( mutex ) );
+}
+
+int
+ldap_pvt_thread_mutex_lock( ldap_pvt_thread_mutex_t *mutex )
+{
+ return ERRVAL( pthread_mutex_lock( mutex ) );
+}
+
+int
+ldap_pvt_thread_mutex_trylock( ldap_pvt_thread_mutex_t *mutex )
+{
+ return ERRVAL( pthread_mutex_trylock( mutex ) );
+}
+
+int
+ldap_pvt_thread_mutex_unlock( ldap_pvt_thread_mutex_t *mutex )
+{
+ return ERRVAL( pthread_mutex_unlock( mutex ) );
+}
+
+int
+ldap_pvt_thread_mutex_recursive_init( ldap_pvt_thread_mutex_t *mutex )
+{
+ return ERRVAL( pthread_mutex_init( mutex, &mutex_attr_recursive ) );
+}
+
+ldap_pvt_thread_t ldap_pvt_thread_self( void )
+{
+ return pthread_self();
+}
+
+int
+ldap_pvt_thread_key_create( ldap_pvt_thread_key_t *key )
+{
+ return pthread_key_create( key, NULL );
+}
+
+int
+ldap_pvt_thread_key_destroy( ldap_pvt_thread_key_t key )
+{
+ return pthread_key_delete( key );
+}
+
+int
+ldap_pvt_thread_key_setdata( ldap_pvt_thread_key_t key, void *data )
+{
+ return pthread_setspecific( key, data );
+}
+
+int
+ldap_pvt_thread_key_getdata( ldap_pvt_thread_key_t key, void **data )
+{
+ *data = pthread_getspecific( key );
+ return 0;
+}
+
+#ifdef LDAP_THREAD_HAVE_RDWR
+#ifdef HAVE_PTHREAD_RWLOCK_DESTROY
+int
+ldap_pvt_thread_rdwr_init( ldap_pvt_thread_rdwr_t *rw )
+{
+ return ERRVAL( pthread_rwlock_init( rw, NULL ) );
+}
+
+int
+ldap_pvt_thread_rdwr_destroy( ldap_pvt_thread_rdwr_t *rw )
+{
+ return ERRVAL( pthread_rwlock_destroy( rw ) );
+}
+
+int ldap_pvt_thread_rdwr_rlock( ldap_pvt_thread_rdwr_t *rw )
+{
+ return ERRVAL( pthread_rwlock_rdlock( rw ) );
+}
+
+int ldap_pvt_thread_rdwr_rtrylock( ldap_pvt_thread_rdwr_t *rw )
+{
+ return ERRVAL( pthread_rwlock_tryrdlock( rw ) );
+}
+
+int ldap_pvt_thread_rdwr_runlock( ldap_pvt_thread_rdwr_t *rw )
+{
+ return ERRVAL( pthread_rwlock_unlock( rw ) );
+}
+
+int ldap_pvt_thread_rdwr_wlock( ldap_pvt_thread_rdwr_t *rw )
+{
+ return ERRVAL( pthread_rwlock_wrlock( rw ) );
+}
+
+int ldap_pvt_thread_rdwr_wtrylock( ldap_pvt_thread_rdwr_t *rw )
+{
+ return ERRVAL( pthread_rwlock_trywrlock( rw ) );
+}
+
+int ldap_pvt_thread_rdwr_wunlock( ldap_pvt_thread_rdwr_t *rw )
+{
+ return ERRVAL( pthread_rwlock_unlock( rw ) );
+}
+
+#endif /* HAVE_PTHREAD_RWLOCK_DESTROY */
+#endif /* LDAP_THREAD_HAVE_RDWR */
+#endif /* HAVE_PTHREADS */
+