/* * Copyright (c) 1993, 1994 by Chris Provenzano, proven@mit.edu * Copyright (c) 1995-1998 by John Birrell * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Chris Provenzano. * 4. The name of Chris Provenzano may not be used to endorse or promote * products derived from this software without specific prior written * permission. * * THIS SOFTWARE IS PROVIDED BY CHRIS PROVENZANO ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL CHRIS PROVENZANO BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $OpenBSD: pthread.h,v 1.8 1999/06/15 00:10:37 d Exp $ * */ #ifndef _PTHREAD_H_ #define _PTHREAD_H_ #ifdef _POSIX_THREADS /* * Header files. */ #include #include #include #include #include #include /* * Run-time invariant values: */ #define PTHREAD_DESTRUCTOR_ITERATIONS 4 #define PTHREAD_KEYS_MAX 256 #define PTHREAD_STACK_MIN 1024 #define PTHREAD_THREADS_MAX ULONG_MAX /* * Compile time symbolic constants for portability specifications: * * Note that those commented out are not currently supported by the * implementation. */ #define _POSIX_THREAD_ATTR_STACKADDR #define _POSIX_THREAD_ATTR_STACKSIZE #define _POSIX_THREAD_PRIORITY_SCHEDULING #define _POSIX_THREAD_PRIO_INHERIT #define _POSIX_THREAD_PRIO_PROTECT /* #define _POSIX_THREAD_PROCESS_SHARED */ #define _POSIX_THREAD_SAFE_FUNCTIONS /* * Flags for threads and thread attributes. */ #define PTHREAD_DETACHED 0x1 #define PTHREAD_SCOPE_SYSTEM 0x2 #define PTHREAD_INHERIT_SCHED 0x4 #define PTHREAD_NOFLOAT 0x8 #define PTHREAD_CREATE_DETACHED PTHREAD_DETACHED #define PTHREAD_CREATE_JOINABLE 0 #define PTHREAD_SCOPE_PROCESS 0 #define PTHREAD_EXPLICIT_SCHED 0 /* * Flags for read/write lock attributes */ #define PTHREAD_PROCESS_PRIVATE 0 #define PTHREAD_PROCESS_SHARED 1 /* * Flags for cancelling threads */ #define PTHREAD_CANCEL_ENABLE 0 #define PTHREAD_CANCEL_DISABLE 1 #define PTHREAD_CANCEL_DEFERRED 0 #define PTHREAD_CANCEL_ASYNCHRONOUS 1 #define PTHREAD_CANCELED ((void *) 1) /* * Forward structure definitions. * * These are mostly opaque to the user. */ struct pthread; struct pthread_attr; struct pthread_cond; struct pthread_cond_attr; struct pthread_mutex; struct pthread_mutex_attr; struct pthread_once; struct pthread_rwlock; struct pthread_rwlockattr; struct sched_param; /* * Primitive system data type definitions required by P1003.1c. * * Note that P1003.1c specifies that there are no defined comparison * or assignment operators for the types pthread_attr_t, pthread_cond_t, * pthread_condattr_t, pthread_mutex_t, pthread_mutexattr_t. */ typedef struct pthread *pthread_t; typedef struct pthread_attr *pthread_attr_t; typedef struct pthread_mutex *pthread_mutex_t; typedef struct pthread_mutex_attr *pthread_mutexattr_t; typedef struct pthread_cond *pthread_cond_t; typedef struct pthread_cond_attr *pthread_condattr_t; typedef int pthread_key_t; typedef struct pthread_once pthread_once_t; typedef struct pthread_rwlock *pthread_rwlock_t; typedef struct pthread_rwlockattr *pthread_rwlockattr_t; /* * Additional type definitions: * * Note that P1003.1c reserves the prefixes pthread_ and PTHREAD_ for * use in header symbols. */ typedef void *pthread_addr_t; typedef void *(*pthread_startroutine_t) __P((void *)); /* * Once definitions. */ struct pthread_once { int state; pthread_mutex_t mutex; }; /* * Flags for once initialization. */ #define PTHREAD_NEEDS_INIT 0 #define PTHREAD_DONE_INIT 1 /* * Static once initialization values. */ #define PTHREAD_ONCE_INIT { PTHREAD_NEEDS_INIT, PTHREAD_MUTEX_INITIALIZER } /* * Static initialization values. */ #define PTHREAD_MUTEX_INITIALIZER NULL #define PTHREAD_COND_INITIALIZER NULL #define PTHREAD_RWLOCK_INITIALIZER NULL #define PTHREAD_PRIO_NONE 0 #ifdef _POSIX_THREAD_PRIO_PROTECT #define PTHREAD_PRIO_INHERIT 1 #define PTHREAD_PRIO_PROTECT 2 #endif /* * Mutex types (Single UNIX Specification, Version 2, 1997). * * Note that a mutex attribute with one of the following types: * * PTHREAD_MUTEX_NORMAL * PTHREAD_MUTEX_RECURSIVE * MUTEX_TYPE_FAST (deprecated) * MUTEX_TYPE_COUNTING_FAST (deprecated) * * will deviate from POSIX specified semantics. */ enum pthread_mutextype { PTHREAD_MUTEX_ERRORCHECK = 1, /* Default POSIX mutex */ PTHREAD_MUTEX_RECURSIVE = 2, /* Recursive mutex */ PTHREAD_MUTEX_NORMAL = 3, /* No error checking */ MUTEX_TYPE_MAX }; #define PTHREAD_MUTEX_DEFAULT PTHREAD_MUTEX_ERRORCHECK #define MUTEX_TYPE_FAST PTHREAD_MUTEX_NORMAL #define MUTEX_TYPE_COUNTING_FAST PTHREAD_MUTEX_RECURSIVE /* * Thread function prototype definitions: */ __BEGIN_DECLS int pthread_attr_destroy __P((pthread_attr_t *)); int pthread_attr_getstacksize __P((pthread_attr_t *, size_t *)); int pthread_attr_getstackaddr __P((pthread_attr_t *, void **)); int pthread_attr_getdetachstate __P((pthread_attr_t *, int *)); int pthread_attr_init __P((pthread_attr_t *)); int pthread_attr_setstacksize __P((pthread_attr_t *, size_t)); int pthread_attr_setstackaddr __P((pthread_attr_t *, void *)); int pthread_attr_setdetachstate __P((pthread_attr_t *, int)); int pthread_cancel __P((pthread_t)); void pthread_cleanup_pop __P((int execute)); void pthread_cleanup_push __P((void (*routine) (void *), void *routine_arg)); int pthread_condattr_destroy __P((pthread_condattr_t *attr)); int pthread_condattr_init __P((pthread_condattr_t *attr)); #if defined(_POSIX_THREAD_PROCESS_SHARED) int pthread_condattr_getpshared __P((const pthread_condattr_t *attr, int *pshared)); int pthread_condattr_setpshared __P((pthread_condattr_t *attr, int pshared)); #endif int pthread_cond_broadcast __P((pthread_cond_t *)); int pthread_cond_destroy __P((pthread_cond_t *)); int pthread_cond_init __P((pthread_cond_t *, const pthread_condattr_t *)); int pthread_cond_signal __P((pthread_cond_t *)); int pthread_cond_timedwait __P((pthread_cond_t *, pthread_mutex_t *, const struct timespec * abstime)); int pthread_cond_wait __P((pthread_cond_t *, pthread_mutex_t *)); int pthread_create __P((pthread_t *, const pthread_attr_t *, void *(*start_routine) (void *), void *)); int pthread_detach __P((pthread_t)); int pthread_equal __P((pthread_t, pthread_t)); __dead void pthread_exit __P((void *)) __attribute__((noreturn)); void *pthread_getspecific __P((pthread_key_t)); int pthread_join __P((pthread_t, void **)); int pthread_key_create __P((pthread_key_t *, void (*routine) (void *))); int pthread_key_delete __P((pthread_key_t)); int pthread_kill __P((struct pthread *, int)); int pthread_mutexattr_init __P((pthread_mutexattr_t *)); int pthread_mutexattr_destroy __P((pthread_mutexattr_t *)); int pthread_mutexattr_settype __P((pthread_mutexattr_t *, int)); int pthread_mutex_destroy __P((pthread_mutex_t *)); int pthread_mutex_init __P((pthread_mutex_t *, const pthread_mutexattr_t *)); int pthread_mutex_lock __P((pthread_mutex_t *)); int pthread_mutex_trylock __P((pthread_mutex_t *)); int pthread_mutex_unlock __P((pthread_mutex_t *)); int pthread_once __P((pthread_once_t *, void (*init_routine) (void))); int pthread_rwlock_destroy __P((pthread_rwlock_t *)); int pthread_rwlock_init __P((pthread_rwlock_t *, const pthread_rwlockattr_t *)); int pthread_rwlock_rdlock __P((pthread_rwlock_t *)); int pthread_rwlock_tryrdlock __P((pthread_rwlock_t *)); int pthread_rwlock_trywrlock __P((pthread_rwlock_t *)); int pthread_rwlock_unlock __P((pthread_rwlock_t *)); int pthread_rwlock_wrlock __P((pthread_rwlock_t *)); int pthread_rwlockattr_init __P((pthread_rwlockattr_t *)); int pthread_rwlockattr_getpshared __P((const pthread_rwlockattr_t *, int *)); int pthread_rwlockattr_setpshared __P((pthread_rwlockattr_t *, int *)); int pthread_rwlockattr_destroy __P((pthread_rwlockattr_t *)); pthread_t pthread_self __P((void)); int pthread_setcancelstate __P((int, int *)); int pthread_setcanceltype __P((int, int *)); int pthread_setspecific __P((pthread_key_t, const void *)); int pthread_sigmask __P((int, const sigset_t *, sigset_t *)); void pthread_testcancel __P((void)); int pthread_getprio __P((pthread_t)); int pthread_setprio __P((pthread_t, int)); void pthread_yield __P((void)); #if defined(_POSIX_THREAD_PROCESS_SHARED) int pthread_mutexattr_getpshared __P((pthread_mutexattr_t *, int *pshared)); int pthread_mutexattr_setpshared __P((pthread_mutexattr_t *, int pshared)); #endif #if defined(_POSIX_THREAD_PRIO_PROTECT) int pthread_mutexattr_getprioceiling __P((pthread_mutexattr_t *, int *prioceiling)); int pthread_mutexattr_setprioceiling __P((pthread_mutexattr_t *, int prioceiling)); int pthread_mutex_getprioceiling __P((pthread_mutex_t *, int *)); int pthread_mutex_setprioceiling __P((pthread_mutex_t *, int, int *)); #endif #if defined(_POSIX_THREAD_PRIO_PROTECT) || defined (_POSIX_THREAD_PRIO_INHERIT) int pthread_mutexattr_getprotocol __P((pthread_mutexattr_t *, int *protocol)); int pthread_mutexattr_setprotocol __P((pthread_mutexattr_t *, int protocol)); #endif #if defined(_POSIX_THREAD_PRIORITY_SCHEDULING) int pthread_attr_getinheritsched __P((const pthread_attr_t *, int *)); int pthread_attr_getschedparam __P((const pthread_attr_t *, struct sched_param *)); int pthread_attr_getschedpolicy __P((const pthread_attr_t *, int *)); int pthread_attr_getscope __P((const pthread_attr_t *, int *)); int pthread_attr_setinheritsched __P((pthread_attr_t *, int)); int pthread_attr_setschedparam __P((pthread_attr_t *, const struct sched_param *)); int pthread_attr_setschedpolicy __P((pthread_attr_t *, int)); int pthread_attr_setscope __P((pthread_attr_t *, int)); int pthread_getschedparam __P((pthread_t pthread, int *policy, struct sched_param * param)); int pthread_setschedparam __P((pthread_t pthread, int policy, const struct sched_param * param)); #endif int pthread_attr_setfloatstate __P((pthread_attr_t *, int)); int pthread_attr_getfloatstate __P((pthread_attr_t *, int *)); int pthread_attr_setcleanup __P((pthread_attr_t *, void (*routine) (void *), void *)); #if 0 /* * Single Unix Specification v2 (UNIX98) also wants these: */ #define PTHREAD_PRIO_INHERIT #define PTHREAD_PRIO_NONE #define PTHREAD_PRIO_PROTECT int pthread_attr_getguardsize __P((const pthread_attr_t *, size_t *)); int pthread_attr_setguardsize __P((const pthread_attr_t *, size_t)); int pthread_getconcurrency __P((void)); int pthread_mutexattr_gettype __P((const pthread_mutexattr_t *, int *)); int pthread_setconcurrency __P((int)); #endif /* susv2 */ __END_DECLS #else /* ! _POSIX_THREADS */ #warning "included without -pthread compiler option" #endif /* ! _POSIX_THREADS */ #endif /* _PTHREAD_H_ */