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Diffstat (limited to 'lib/pthread.in.h')
-rw-r--r-- | lib/pthread.in.h | 295 |
1 files changed, 295 insertions, 0 deletions
diff --git a/lib/pthread.in.h b/lib/pthread.in.h new file mode 100644 index 0000000..02f8b55 --- /dev/null +++ b/lib/pthread.in.h @@ -0,0 +1,295 @@ +/* Implement a trivial subset of POSIX 1003.1-2008 pthread.h. + + Copyright (C) 2009-2016 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3, or (at your option) + any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, see <http://www.gnu.org/licenses/>. */ + +/* Written by Paul Eggert and Glen Lenker. */ + +#ifndef _@GUARD_PREFIX@_PTHREAD_H_ + +#if __GNUC__ >= 3 +@PRAGMA_SYSTEM_HEADER@ +#endif +@PRAGMA_COLUMNS@ + +/* The include_next requires a split double-inclusion guard. */ +#if @HAVE_PTHREAD_H@ +# @INCLUDE_NEXT@ @NEXT_PTHREAD_H@ +#endif + +#ifndef _@GUARD_PREFIX@_PTHREAD_H_ +#define _@GUARD_PREFIX@_PTHREAD_H_ + +#define __need_system_stdlib_h +#include <stdlib.h> +#undef __need_system_stdlib_h + + +/* The pthreads-win32 <pthread.h> defines a couple of broken macros. */ +#undef asctime_r +#undef ctime_r +#undef gmtime_r +#undef localtime_r +#undef rand_r +#undef strtok_r + +#include <errno.h> +#include <sched.h> +#include <sys/types.h> +#include <time.h> + +#ifndef _GL_INLINE_HEADER_BEGIN + #error "Please include config.h first." +#endif +_GL_INLINE_HEADER_BEGIN +#ifndef _GL_PTHREAD_INLINE +# define _GL_PTHREAD_INLINE _GL_INLINE +#endif + +#if ! @HAVE_PTHREAD_T@ +# if !GNULIB_defined_pthread_types + typedef int pthread_t; + typedef int pthread_attr_t; + typedef int pthread_barrier_t; + typedef int pthread_barrierattr_t; + typedef int pthread_cond_t; + typedef int pthread_condattr_t; + typedef int pthread_key_t; + typedef int pthread_mutex_t; + typedef int pthread_mutexattr_t; + typedef int pthread_once_t; + typedef int pthread_rwlock_t; + typedef int pthread_rwlockattr_t; +# define GNULIB_defined_pthread_types 1 +# endif +#endif + +#ifndef PTHREAD_COND_INITIALIZER +#define PTHREAD_COND_INITIALIZER { 0 } +#define PTHREAD_MUTEX_INITIALIZER { 0 } +#define PTHREAD_ONCE_INIT { 0 } +#define PTHREAD_RWLOCK_INITIALIZER { 0 } + +#define PTHREAD_BARRIER_SERIAL_THREAD (-1) + +#define PTHREAD_CANCEL_DEFERRED 0 +#define PTHREAD_CANCEL_ASYNCHRONOUS 1 + +#define PTHREAD_CANCEL_ENABLE 0 +#define PTHREAD_CANCEL_DISABLE 1 + +#define PTHREAD_CANCELED ((void *) -1) + +#define PTHREAD_CREATE_JOINABLE 0 +#define PTHREAD_CREATE_DETACHED 1 + +#define PTHREAD_INHERIT_SCHED 0 +#define PTHREAD_EXPLICIT_SCHED 1 + +#define PTHREAD_MUTEX_DEFAULT PTHREAD_MUTEX_NORMAL +#define PTHREAD_MUTEX_NORMAL 0 +#define PTHREAD_MUTEX_ERRORCHECK 1 +#define PTHREAD_MUTEX_RECURSIVE 2 + +#define PTHREAD_MUTEX_STALLED 0 +#define PTHREAD_MUTEX_ROBUST 1 + +#define PTHREAD_PRIO_NONE 0 +#define PTHREAD_PRIO_INHERIT 1 +#define PTHREAD_PRIO_PROTECT 2 + +#define PTHREAD_PROCESS_PRIVATE 0 +#define PTHREAD_PROCESS_SHARED 1 + +#define PTHREAD_SCOPE_SYSTEM 0 +#define PTHREAD_SCOPE_PROCESS 1 +#endif + +#if ! @HAVE_PTHREAD_T@ + +# if !GNULIB_defined_pthread_functions + +/* Provide substitutes for the thread functions that should work + adequately on a single-threaded implementation, where + pthread_create always fails. The goal is to let programs compile + on non-pthread hosts with minimal runtime overhead. + + Omit interfaces that have not been analyzed and for which we do not + know what to do, so that they elicit a compile-time error for + now. */ + +_GL_PTHREAD_INLINE int +pthread_cond_destroy (pthread_cond_t *cond) +{ + /* COND is never seriously used. */ + return 0; +} + +_GL_PTHREAD_INLINE int +pthread_cond_init (pthread_cond_t *restrict cond, + pthread_condattr_t const *restrict attr) +{ + /* COND is never seriously used. */ + return 0; +} + +_GL_PTHREAD_INLINE int +pthread_cond_signal (pthread_cond_t *cond) +{ + /* No threads can currently be blocked on COND. */ + return 0; +} + +_GL_PTHREAD_INLINE int +pthread_cond_wait (pthread_cond_t *restrict cond, + pthread_mutex_t *restrict mutex) +{ + /* Properly-written applications never come here. */ + abort (); + return 0; +} + +_GL_PTHREAD_INLINE int +pthread_create (pthread_t *restrict thread, + pthread_attr_t const *restrict attr, + void * (*start_routine) (void*), void *restrict arg) +{ + /* Do not create a thread. */ + return EAGAIN; +} + +_GL_PTHREAD_INLINE void +pthread_exit (void *value) +{ + /* There is just one thread, so the process exits. */ + exit (0); +} + +_GL_PTHREAD_INLINE int +pthread_join (pthread_t thread, void **pvalue) +{ + /* Properly-written applications never come here. */ + abort (); + return 0; +} + +_GL_PTHREAD_INLINE int +pthread_mutexattr_destroy (pthread_mutexattr_t *attr) +{ + return 0; +} + +_GL_PTHREAD_INLINE int +pthread_mutexattr_init (pthread_mutexattr_t *attr) +{ + return 0; +} + +_GL_PTHREAD_INLINE int +pthread_mutexattr_settype (pthread_mutexattr_t *attr, int attr_type) +{ + return 0; +} + +_GL_PTHREAD_INLINE int +pthread_mutex_destroy (pthread_mutex_t *mutex) +{ + /* MUTEX is never seriously used. */ + return 0; +} + +_GL_PTHREAD_INLINE int +pthread_mutex_init (pthread_mutex_t *restrict mutex, + pthread_mutexattr_t const *restrict attr) +{ + /* MUTEX is never seriously used. */ + return 0; +} + +_GL_PTHREAD_INLINE int +pthread_mutex_lock (pthread_mutex_t *mutex) +{ + /* There is only one thread, so it always gets the lock. This + implementation does not support PTHREAD_MUTEX_ERRORCHECK. */ + return 0; +} + +_GL_PTHREAD_INLINE int +pthread_mutex_trylock (pthread_mutex_t *mutex) +{ + return pthread_mutex_lock (mutex); +} + +_GL_PTHREAD_INLINE int +pthread_mutex_unlock (pthread_mutex_t *mutex) +{ + /* There is only one thread, so it always unlocks successfully. + This implementation does not support robust mutexes or + PTHREAD_MUTEX_ERRORCHECK. */ + return 0; +} + +# define GNULIB_defined_pthread_functions 1 +# endif + +#endif + +#if ! @HAVE_PTHREAD_SPINLOCK_T@ + +# if !GNULIB_defined_pthread_spinlock_t + +/* Approximate spinlocks with mutexes. */ + +typedef pthread_mutex_t pthread_spinlock_t; + +_GL_PTHREAD_INLINE int +pthread_spin_init (pthread_spinlock_t *lock, int pshared) +{ + return pthread_mutex_init (lock, NULL); +} + +_GL_PTHREAD_INLINE int +pthread_spin_destroy (pthread_spinlock_t *lock) +{ + return pthread_mutex_destroy (lock); +} + +_GL_PTHREAD_INLINE int +pthread_spin_lock (pthread_spinlock_t *lock) +{ + return pthread_mutex_lock (lock); +} + +_GL_PTHREAD_INLINE int +pthread_spin_trylock (pthread_spinlock_t *lock) +{ + return pthread_mutex_trylock (lock); +} + +_GL_PTHREAD_INLINE int +pthread_spin_unlock (pthread_spinlock_t *lock) +{ + return pthread_mutex_unlock (lock); +} + +# define GNULIB_defined_pthread_spinlock_t 1 +# endif + +#endif + +_GL_INLINE_HEADER_END + +#endif /* _@GUARD_PREFIX@_PTHREAD_H_ */ +#endif /* _@GUARD_PREFIX@_PTHREAD_H_ */ |