Add pthread_once(3).
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@ -36,6 +36,7 @@ pthread_mutex_init.o \
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pthread_mutex_lock.o \
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pthread_mutex_lock.o \
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pthread_mutex_trylock.o \
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pthread_mutex_trylock.o \
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pthread_mutex_unlock.o \
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pthread_mutex_unlock.o \
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pthread_once.o \
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pthread_rwlock_destroy.o \
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pthread_rwlock_destroy.o \
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pthread_rwlock_init.o \
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pthread_rwlock_init.o \
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pthread_rwlock_rdlock.o \
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pthread_rwlock_rdlock.o \
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@ -99,7 +99,19 @@ typedef struct
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} __pthread_mutexattr_t;
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} __pthread_mutexattr_t;
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#endif
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#endif
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typedef int __pthread_once_t;
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#if defined(__is_sortix_libpthread)
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typedef struct
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{
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__pthread_mutex_t lock;
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int executed;
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} __pthread_once_t;
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#else
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typedef struct
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{
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__pthread_mutex_t __pthread_lock;
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int __pthread_executed;
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} __pthread_once_t;
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#endif
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#if defined(__is_sortix_libpthread)
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#if defined(__is_sortix_libpthread)
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typedef struct
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typedef struct
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@ -61,7 +61,6 @@ __BEGIN_DECLS
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#define PTHREAD_MUTEX_RECURSIVE 1
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#define PTHREAD_MUTEX_RECURSIVE 1
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/* TODO: #define PTHREAD_MUTEX_ROBUST */
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/* TODO: #define PTHREAD_MUTEX_ROBUST */
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/* TODO: #define PTHREAD_MUTEX_STALLED */
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/* TODO: #define PTHREAD_MUTEX_STALLED */
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/* TODO: #define PTHREAD_ONCE_INIT */
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/* TODO: #define PTHREAD_PRIO_INHERIT */
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/* TODO: #define PTHREAD_PRIO_INHERIT */
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/* TODO: #define PTHREAD_PRIO_NONE */
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/* TODO: #define PTHREAD_PRIO_NONE */
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/* TODO: #define PTHREAD_PRIO_PROTECT */
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/* TODO: #define PTHREAD_PRIO_PROTECT */
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@ -161,6 +160,8 @@ struct pthread_cond_elem
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#define PTHREAD_NORMAL_MUTEX_INITIALIZER_NP { 0, PTHREAD_MUTEX_NORMAL, 0, 0 }
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#define PTHREAD_NORMAL_MUTEX_INITIALIZER_NP { 0, PTHREAD_MUTEX_NORMAL, 0, 0 }
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#define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP { 0, PTHREAD_MUTEX_RECURSIVE, 0, 0 }
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#define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP { 0, PTHREAD_MUTEX_RECURSIVE, 0, 0 }
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#define PTHREAD_ONCE_INIT { PTHREAD_NORMAL_MUTEX_INITIALIZER_NP, 0 }
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void pthread_initialize(void);
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void pthread_initialize(void);
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#if defined(__is_sortix_libpthread)
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#if defined(__is_sortix_libpthread)
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@ -256,7 +257,7 @@ int pthread_mutexattr_init(pthread_mutexattr_t*);
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/* TODO: pthread_mutexattr_setpshared */
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/* TODO: pthread_mutexattr_setpshared */
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/* TODO: pthread_mutexattr_setrobust */
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/* TODO: pthread_mutexattr_setrobust */
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int pthread_mutexattr_settype(pthread_mutexattr_t*, int);
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int pthread_mutexattr_settype(pthread_mutexattr_t*, int);
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/* TODO: pthread_once */
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int pthread_once(pthread_once_t*, void (*)(void));
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int pthread_rwlock_destroy(pthread_rwlock_t*);
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int pthread_rwlock_destroy(pthread_rwlock_t*);
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int pthread_rwlock_init(pthread_rwlock_t* __restrict,
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int pthread_rwlock_init(pthread_rwlock_t* __restrict,
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const pthread_rwlockattr_t* __restrict);
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const pthread_rwlockattr_t* __restrict);
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@ -0,0 +1,42 @@
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/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2014.
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This file is part of Sortix libpthread.
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Sortix libpthread is free software: you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by the
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Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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Sortix libpthread is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with Sortix libpthread. If not, see <http://www.gnu.org/licenses/>.
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pthread_once.c++
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Dynamic package initialization.
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*******************************************************************************/
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#include <pthread.h>
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extern "C"
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int pthread_once(pthread_once_t* once_control, void (*init_routine)(void))
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{
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pthread_mutex_lock(&once_control->lock);
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if ( !once_control->executed )
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{
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// TODO: If this thread is a cancellation point and is canceled, we must
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// pretend this pthread_once was never called. This means that we
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// need to ensure that once_control->lock is unlocked in the event
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// of a cancellation.
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init_routine();
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once_control->executed = 1;
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}
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pthread_mutex_unlock(&once_control->lock);
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return 0;
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}
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