1 /* thr_posix.c - wrapper around posix and posixish thread implementations. */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 1998-2015 The OpenLDAP Foundation.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted only as authorized by the OpenLDAP
12 * A copy of this license is available in file LICENSE in the
13 * top-level directory of the distribution or, alternatively, at
14 * <http://www.OpenLDAP.org/license.html>.
19 #if defined( HAVE_PTHREADS )
23 #ifdef REPLACE_BROKEN_YIELD
24 #ifndef HAVE_NANOSLEEP
25 #include <ac/socket.h>
30 #include "ldap_pvt_thread.h" /* Get the thread interface */
31 #define LDAP_THREAD_IMPLEMENTATION
32 #define LDAP_THREAD_RDWR_IMPLEMENTATION
33 #include "ldap_thr_debug.h" /* May rename the symbols defined below */
34 #include <signal.h> /* For pthread_kill() */
36 extern int ldap_int_stackguard;
39 # define LDAP_INT_THREAD_ATTR_DEFAULT pthread_attr_default
40 # define LDAP_INT_THREAD_CONDATTR_DEFAULT pthread_condattr_default
41 # define LDAP_INT_THREAD_MUTEXATTR_DEFAULT pthread_mutexattr_default
43 # define LDAP_INT_THREAD_ATTR_DEFAULT NULL
44 # define LDAP_INT_THREAD_CONDATTR_DEFAULT NULL
45 # define LDAP_INT_THREAD_MUTEXATTR_DEFAULT NULL
48 #ifdef LDAP_THREAD_DEBUG
49 # if defined LDAP_INT_THREAD_MUTEXATTR /* May be defined in CPPFLAGS */
50 # elif defined HAVE_PTHREAD_KILL_OTHER_THREADS_NP
51 /* LinuxThreads hack */
52 # define LDAP_INT_THREAD_MUTEXATTR PTHREAD_MUTEX_ERRORCHECK_NP
54 # define LDAP_INT_THREAD_MUTEXATTR PTHREAD_MUTEX_ERRORCHECK
56 static pthread_mutexattr_t mutex_attr;
57 # undef LDAP_INT_THREAD_MUTEXATTR_DEFAULT
58 # define LDAP_INT_THREAD_MUTEXATTR_DEFAULT &mutex_attr
62 #define ERRVAL(val) ((val) < 0 ? errno : 0)
64 #define ERRVAL(val) (val)
68 ldap_int_thread_initialize( void )
70 #ifdef LDAP_INT_THREAD_MUTEXATTR
71 pthread_mutexattr_init( &mutex_attr );
72 pthread_mutexattr_settype( &mutex_attr, LDAP_INT_THREAD_MUTEXATTR );
78 ldap_int_thread_destroy( void )
80 #ifdef HAVE_PTHREAD_KILL_OTHER_THREADS_NP
81 /* LinuxThreads: kill clones */
82 pthread_kill_other_threads_np();
84 #ifdef LDAP_INT_THREAD_MUTEXATTR
85 pthread_mutexattr_destroy( &mutex_attr );
90 #ifdef LDAP_THREAD_HAVE_SETCONCURRENCY
92 ldap_pvt_thread_set_concurrency(int n)
94 #ifdef HAVE_PTHREAD_SETCONCURRENCY
95 return pthread_setconcurrency( n );
96 #elif defined(HAVE_THR_SETCONCURRENCY)
97 return thr_setconcurrency( n );
104 #ifdef LDAP_THREAD_HAVE_GETCONCURRENCY
106 ldap_pvt_thread_get_concurrency(void)
108 #ifdef HAVE_PTHREAD_GETCONCURRENCY
109 return pthread_getconcurrency();
110 #elif defined(HAVE_THR_GETCONCURRENCY)
111 return thr_getconcurrency();
118 /* detachstate appeared in Draft 6, but without manifest constants.
119 * in Draft 7 they were called PTHREAD_CREATE_UNDETACHED and ...DETACHED.
120 * in Draft 8 on, ...UNDETACHED became ...JOINABLE.
122 #ifndef PTHREAD_CREATE_JOINABLE
123 #ifdef PTHREAD_CREATE_UNDETACHED
124 #define PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED
126 #define PTHREAD_CREATE_JOINABLE 0
130 #ifndef PTHREAD_CREATE_DETACHED
131 #define PTHREAD_CREATE_DETACHED 1
135 ldap_pvt_thread_create( ldap_pvt_thread_t * thread,
137 void *(*start_routine)( void * ),
143 /* Always create the thread attrs, so we can set stacksize if we need to */
144 #if HAVE_PTHREADS > 5
145 pthread_attr_init(&attr);
147 pthread_attr_create(&attr);
150 #ifdef LDAP_PVT_THREAD_SET_STACK_SIZE
151 /* this should be tunable */
152 pthread_attr_setstacksize( &attr, LDAP_PVT_THREAD_STACK_SIZE );
153 if ( ldap_int_stackguard )
154 pthread_attr_setguardsize( &attr, LDAP_PVT_THREAD_STACK_SIZE );
157 #if HAVE_PTHREADS > 5
158 detach = detach ? PTHREAD_CREATE_DETACHED : PTHREAD_CREATE_JOINABLE;
159 #if HAVE_PTHREADS == 6
160 pthread_attr_setdetachstate(&attr, &detach);
162 pthread_attr_setdetachstate(&attr, detach);
166 #if HAVE_PTHREADS < 5
167 rtn = pthread_create( thread, attr, start_routine, arg );
169 rtn = pthread_create( thread, &attr, start_routine, arg );
172 #if HAVE_PTHREADS > 5
173 pthread_attr_destroy(&attr);
175 pthread_attr_delete(&attr);
177 pthread_detach( thread );
181 #if HAVE_PTHREADS < 7
182 if ( rtn < 0 ) rtn = errno;
188 ldap_pvt_thread_exit( void *retval )
190 pthread_exit( retval );
194 ldap_pvt_thread_join( ldap_pvt_thread_t thread, void **thread_return )
196 #if HAVE_PTHREADS < 7
198 if (thread_return==NULL)
199 thread_return=&dummy;
201 return ERRVAL( pthread_join( thread, thread_return ) );
205 ldap_pvt_thread_kill( ldap_pvt_thread_t thread, int signo )
207 #if defined(HAVE_PTHREAD_KILL) && HAVE_PTHREADS > 4
208 /* MacOS 10.1 is detected as v10 but has no pthread_kill() */
209 return ERRVAL( pthread_kill( thread, signo ) );
211 /* pthread package with DCE */
212 if (kill( getpid(), signo )<0)
219 ldap_pvt_thread_yield( void )
221 #ifdef REPLACE_BROKEN_YIELD
222 #ifdef HAVE_NANOSLEEP
223 struct timespec t = { 0, 0 };
226 struct timeval tv = {0,0};
227 select( 0, NULL, NULL, NULL, &tv );
231 #elif defined(HAVE_THR_YIELD)
235 #elif HAVE_PTHREADS == 10
236 return sched_yield();
238 #elif defined(_POSIX_THREAD_IS_GNU_PTH)
242 #elif HAVE_PTHREADS == 6
253 ldap_pvt_thread_cond_init( ldap_pvt_thread_cond_t *cond )
255 return ERRVAL( pthread_cond_init(
256 cond, LDAP_INT_THREAD_CONDATTR_DEFAULT ) );
260 ldap_pvt_thread_cond_destroy( ldap_pvt_thread_cond_t *cond )
262 return ERRVAL( pthread_cond_destroy( cond ) );
266 ldap_pvt_thread_cond_signal( ldap_pvt_thread_cond_t *cond )
268 return ERRVAL( pthread_cond_signal( cond ) );
272 ldap_pvt_thread_cond_broadcast( ldap_pvt_thread_cond_t *cond )
274 return ERRVAL( pthread_cond_broadcast( cond ) );
278 ldap_pvt_thread_cond_wait( ldap_pvt_thread_cond_t *cond,
279 ldap_pvt_thread_mutex_t *mutex )
281 return ERRVAL( pthread_cond_wait( cond, mutex ) );
285 ldap_pvt_thread_mutex_init( ldap_pvt_thread_mutex_t *mutex )
287 return ERRVAL( pthread_mutex_init(
288 mutex, LDAP_INT_THREAD_MUTEXATTR_DEFAULT ) );
292 ldap_pvt_thread_mutex_destroy( ldap_pvt_thread_mutex_t *mutex )
294 return ERRVAL( pthread_mutex_destroy( mutex ) );
298 ldap_pvt_thread_mutex_lock( ldap_pvt_thread_mutex_t *mutex )
300 return ERRVAL( pthread_mutex_lock( mutex ) );
304 ldap_pvt_thread_mutex_trylock( ldap_pvt_thread_mutex_t *mutex )
306 return ERRVAL( pthread_mutex_trylock( mutex ) );
310 ldap_pvt_thread_mutex_unlock( ldap_pvt_thread_mutex_t *mutex )
312 return ERRVAL( pthread_mutex_unlock( mutex ) );
315 ldap_pvt_thread_t ldap_pvt_thread_self( void )
317 return pthread_self();
321 ldap_pvt_thread_key_create( ldap_pvt_thread_key_t *key )
323 return pthread_key_create( key, NULL );
327 ldap_pvt_thread_key_destroy( ldap_pvt_thread_key_t key )
329 return pthread_key_delete( key );
333 ldap_pvt_thread_key_setdata( ldap_pvt_thread_key_t key, void *data )
335 return pthread_setspecific( key, data );
339 ldap_pvt_thread_key_getdata( ldap_pvt_thread_key_t key, void **data )
341 *data = pthread_getspecific( key );
345 #ifdef LDAP_THREAD_HAVE_RDWR
346 #ifdef HAVE_PTHREAD_RWLOCK_DESTROY
348 ldap_pvt_thread_rdwr_init( ldap_pvt_thread_rdwr_t *rw )
350 return ERRVAL( pthread_rwlock_init( rw, NULL ) );
354 ldap_pvt_thread_rdwr_destroy( ldap_pvt_thread_rdwr_t *rw )
356 return ERRVAL( pthread_rwlock_destroy( rw ) );
359 int ldap_pvt_thread_rdwr_rlock( ldap_pvt_thread_rdwr_t *rw )
361 return ERRVAL( pthread_rwlock_rdlock( rw ) );
364 int ldap_pvt_thread_rdwr_rtrylock( ldap_pvt_thread_rdwr_t *rw )
366 return ERRVAL( pthread_rwlock_tryrdlock( rw ) );
369 int ldap_pvt_thread_rdwr_runlock( ldap_pvt_thread_rdwr_t *rw )
371 return ERRVAL( pthread_rwlock_unlock( rw ) );
374 int ldap_pvt_thread_rdwr_wlock( ldap_pvt_thread_rdwr_t *rw )
376 return ERRVAL( pthread_rwlock_wrlock( rw ) );
379 int ldap_pvt_thread_rdwr_wtrylock( ldap_pvt_thread_rdwr_t *rw )
381 return ERRVAL( pthread_rwlock_trywrlock( rw ) );
384 int ldap_pvt_thread_rdwr_wunlock( ldap_pvt_thread_rdwr_t *rw )
386 return ERRVAL( pthread_rwlock_unlock( rw ) );
389 #endif /* HAVE_PTHREAD_RWLOCK_DESTROY */
390 #endif /* LDAP_THREAD_HAVE_RDWR */
391 #endif /* HAVE_PTHREADS */