/* Copyright (C) 2002-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <bits/pthreadtypes.h>
#include <bits/wordsize.h>
#include <bits/types/struct_timespec.h>
#define PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_JOINABLE
#define PTHREAD_CREATE_DETACHED PTHREAD_CREATE_DETACHED
PTHREAD_MUTEX_RECURSIVE_NP,
PTHREAD_MUTEX_ERRORCHECK_NP,
PTHREAD_MUTEX_ADAPTIVE_NP
#if defined __USE_UNIX98 || defined __USE_XOPEN2K8
PTHREAD_MUTEX_NORMAL = PTHREAD_MUTEX_TIMED_NP,
PTHREAD_MUTEX_RECURSIVE = PTHREAD_MUTEX_RECURSIVE_NP,
PTHREAD_MUTEX_ERRORCHECK = PTHREAD_MUTEX_ERRORCHECK_NP,
PTHREAD_MUTEX_DEFAULT = PTHREAD_MUTEX_NORMAL
, PTHREAD_MUTEX_FAST_NP = PTHREAD_MUTEX_TIMED_NP
/* Robust mutex or not flags. */
PTHREAD_MUTEX_STALLED_NP = PTHREAD_MUTEX_STALLED,
PTHREAD_MUTEX_ROBUST_NP = PTHREAD_MUTEX_ROBUST
#if defined __USE_POSIX199506 || defined __USE_UNIX98
#if __PTHREAD_MUTEX_HAVE_PREV
# define PTHREAD_MUTEX_INITIALIZER \
{ { 0, 0, 0, 0, 0, __PTHREAD_SPINS, { 0, 0 } } }
# define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP \
{ { 0, 0, 0, 0, PTHREAD_MUTEX_RECURSIVE_NP, __PTHREAD_SPINS, { 0, 0 } } }
# define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP \
{ { 0, 0, 0, 0, PTHREAD_MUTEX_ERRORCHECK_NP, __PTHREAD_SPINS, { 0, 0 } } }
# define PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP \
{ { 0, 0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, __PTHREAD_SPINS, { 0, 0 } } }
# define PTHREAD_MUTEX_INITIALIZER \
{ { 0, 0, 0, 0, 0, { __PTHREAD_SPINS } } }
# define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP \
{ { 0, 0, 0, PTHREAD_MUTEX_RECURSIVE_NP, 0, { __PTHREAD_SPINS } } }
# define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP \
{ { 0, 0, 0, PTHREAD_MUTEX_ERRORCHECK_NP, 0, { __PTHREAD_SPINS } } }
# define PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP \
{ { 0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, 0, { __PTHREAD_SPINS } } }
/* Read-write lock types. */
#if defined __USE_UNIX98 || defined __USE_XOPEN2K
PTHREAD_RWLOCK_PREFER_READER_NP,
PTHREAD_RWLOCK_PREFER_WRITER_NP,
PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP,
PTHREAD_RWLOCK_DEFAULT_NP = PTHREAD_RWLOCK_PREFER_READER_NP
/* Define __PTHREAD_RWLOCK_INT_FLAGS_SHARED to 1 if pthread_rwlock_t
has the shared field. All 64-bit architectures have the shared field
#ifndef __PTHREAD_RWLOCK_INT_FLAGS_SHARED
# define __PTHREAD_RWLOCK_INT_FLAGS_SHARED 1
/* Read-write lock initializers. */
# define PTHREAD_RWLOCK_INITIALIZER \
{ { 0, 0, 0, 0, 0, 0, 0, 0, __PTHREAD_RWLOCK_ELISION_EXTRA, 0, 0 } }
# ifdef __PTHREAD_RWLOCK_INT_FLAGS_SHARED
# define PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP \
{ { 0, 0, 0, 0, 0, 0, 0, 0, __PTHREAD_RWLOCK_ELISION_EXTRA, 0, \
PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP } }
# if __BYTE_ORDER == __LITTLE_ENDIAN
# define PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP \
{ { 0, 0, 0, 0, 0, 0, PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP, \
0, __PTHREAD_RWLOCK_ELISION_EXTRA, 0, 0 } }
# define PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP \
{ { 0, 0, 0, 0, 0, 0, 0, 0, 0, PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP,\
#endif /* Unix98 or XOpen2K */
/* Scheduler inheritance. */
#define PTHREAD_INHERIT_SCHED PTHREAD_INHERIT_SCHED
#define PTHREAD_EXPLICIT_SCHED PTHREAD_EXPLICIT_SCHED
#define PTHREAD_SCOPE_SYSTEM PTHREAD_SCOPE_SYSTEM
#define PTHREAD_SCOPE_PROCESS PTHREAD_SCOPE_PROCESS
/* Process shared or private flag. */
#define PTHREAD_PROCESS_PRIVATE PTHREAD_PROCESS_PRIVATE
#define PTHREAD_PROCESS_SHARED PTHREAD_PROCESS_SHARED
/* Conditional variable handling. */
#define PTHREAD_COND_INITIALIZER { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }
struct _pthread_cleanup_buffer
void (*__routine) (void *); /* Function to call. */
void *__arg; /* Its argument. */
int __canceltype; /* Saved cancellation type. */
struct _pthread_cleanup_buffer *__prev; /* Chaining of cleanup functions. */
#define PTHREAD_CANCEL_ENABLE PTHREAD_CANCEL_ENABLE
#define PTHREAD_CANCEL_DISABLE PTHREAD_CANCEL_DISABLE
#define PTHREAD_CANCEL_DEFERRED PTHREAD_CANCEL_DEFERRED
PTHREAD_CANCEL_ASYNCHRONOUS
#define PTHREAD_CANCEL_ASYNCHRONOUS PTHREAD_CANCEL_ASYNCHRONOUS
#define PTHREAD_CANCELED ((void *) -1)
/* Single execution handling. */
#define PTHREAD_ONCE_INIT 0
/* Value returned by 'pthread_barrier_wait' for one of the threads after
the required number of threads have called this function.
-1 is distinct from 0 and all errno constants */
# define PTHREAD_BARRIER_SERIAL_THREAD -1
/* Create a new thread, starting with execution of START-ROUTINE
getting passed ARG. Creation attributed come from ATTR. The new
handle is stored in *NEWTHREAD. */
extern int pthread_create (pthread_t *__restrict __newthread,
const pthread_attr_t *__restrict __attr,
void *(*__start_routine) (void *),
void *__restrict __arg) __THROWNL __nonnull ((1, 3));
/* Terminate calling thread.
The registered cleanup handlers are called via exception handling
so we cannot mark this function with __THROW.*/
extern void pthread_exit (void *__retval) __attribute__ ((__noreturn__));
/* Make calling thread wait for termination of the thread TH. The
exit status of the thread is stored in *THREAD_RETURN, if THREAD_RETURN
This function is a cancellation point and therefore not marked with
extern int pthread_join (pthread_t __th, void **__thread_return);
/* Check whether thread TH has terminated. If yes return the status of
the thread in *THREAD_RETURN, if THREAD_RETURN is not NULL. */
extern int pthread_tryjoin_np (pthread_t __th, void **__thread_return) __THROW;
/* Make calling thread wait for termination of the thread TH, but only
until TIMEOUT. The exit status of the thread is stored in
*THREAD_RETURN, if THREAD_RETURN is not NULL.
This function is a cancellation point and therefore not marked with
extern int pthread_timedjoin_np (pthread_t __th, void **__thread_return,
const struct timespec *__abstime);
/* Indicate that the thread TH is never to be joined with PTHREAD_JOIN.
The resources of TH will therefore be freed immediately when it
terminates, instead of waiting for another thread to perform PTHREAD_JOIN
extern int pthread_detach (pthread_t __th) __THROW;
/* Obtain the identifier of the current thread. */
extern pthread_t pthread_self (void) __THROW __attribute__ ((__const__));
/* Compare two thread identifiers. */
extern int pthread_equal (pthread_t __thread1, pthread_t __thread2)
__THROW __attribute__ ((__const__));
/* Thread attribute handling. */
/* Initialize thread attribute *ATTR with default attributes
(detachstate is PTHREAD_JOINABLE, scheduling policy is SCHED_OTHER,
no user-provided stack). */
extern int pthread_attr_init (pthread_attr_t *__attr) __THROW __nonnull ((1));
/* Destroy thread attribute *ATTR. */
extern int pthread_attr_destroy (pthread_attr_t *__attr)
/* Get detach state attribute. */
extern int pthread_attr_getdetachstate (const pthread_attr_t *__attr,
__THROW __nonnull ((1, 2));
/* Set detach state attribute. */
extern int pthread_attr_setdetachstate (pthread_attr_t *__attr,
/* Get the size of the guard area created for stack overflow protection. */
extern int pthread_attr_getguardsize (const pthread_attr_t *__attr,
__THROW __nonnull ((1, 2));
/* Set the size of the guard area created for stack overflow protection. */
extern int pthread_attr_setguardsize (pthread_attr_t *__attr,
/* Return in *PARAM the scheduling parameters of *ATTR. */
extern int pthread_attr_getschedparam (const pthread_attr_t *__restrict __attr,
struct sched_param *__restrict __param)
__THROW __nonnull ((1, 2));
/* Set scheduling parameters (priority, etc) in *ATTR according to PARAM. */
extern int pthread_attr_setschedparam (pthread_attr_t *__restrict __attr,
const struct sched_param *__restrict
__param) __THROW __nonnull ((1, 2));
/* Return in *POLICY the scheduling policy of *ATTR. */
extern int pthread_attr_getschedpolicy (const pthread_attr_t *__restrict
__attr, int *__restrict __policy)
__THROW __nonnull ((1, 2));
/* Set scheduling policy in *ATTR according to POLICY. */
extern int pthread_attr_setschedpolicy (pthread_attr_t *__attr, int __policy)
/* Return in *INHERIT the scheduling inheritance mode of *ATTR. */
extern int pthread_attr_getinheritsched (const pthread_attr_t *__restrict
__attr, int *__restrict __inherit)
__THROW __nonnull ((1, 2));
/* Set scheduling inheritance mode in *ATTR according to INHERIT. */
extern int pthread_attr_setinheritsched (pthread_attr_t *__attr,
/* Return in *SCOPE the scheduling contention scope of *ATTR. */
extern int pthread_attr_getscope (const pthread_attr_t *__restrict __attr,
__THROW __nonnull ((1, 2));
/* Set scheduling contention scope in *ATTR according to SCOPE. */
extern int pthread_attr_setscope (pthread_attr_t *__attr, int __scope)
/* Return the previously set address for the stack. */
extern int pthread_attr_getstackaddr (const pthread_attr_t *__restrict
__attr, void **__restrict __stackaddr)
__THROW __nonnull ((1, 2)) __attribute_deprecated__;
/* Set the starting address of the stack of the thread to be created.
Depending on whether the stack grows up or down the value must either
be higher or lower than all the address in the memory block. The
minimal size of the block must be PTHREAD_STACK_MIN. */
extern int pthread_attr_setstackaddr (pthread_attr_t *__attr,
__THROW __nonnull ((1)) __attribute_deprecated__;
/* Return the currently used minimal stack size. */
extern int pthread_attr_getstacksize (const pthread_attr_t *__restrict
__attr, size_t *__restrict __stacksize)
__THROW __nonnull ((1, 2));
/* Add information about the minimum stack size needed for the thread
to be started. This size must never be less than PTHREAD_STACK_MIN
and must also not exceed the system limits. */
extern int pthread_attr_setstacksize (pthread_attr_t *__attr,
/* Return the previously set address for the stack. */
extern int pthread_attr_getstack (const pthread_attr_t *__restrict __attr,
void **__restrict __stackaddr,
size_t *__restrict __stacksize)
__THROW __nonnull ((1, 2, 3));
/* The following two interfaces are intended to replace the last two. They
require setting the address as well as the size since only setting the
address will make the implementation on some architectures impossible. */
extern int pthread_attr_setstack (pthread_attr_t *__attr, void *__stackaddr,
size_t __stacksize) __THROW __nonnull ((1));
/* Thread created with attribute ATTR will be limited to run only on
the processors represented in CPUSET. */
extern int pthread_attr_setaffinity_np (pthread_attr_t *__attr,
const cpu_set_t *__cpuset)
__THROW __nonnull ((1, 3));
/* Get bit set in CPUSET representing the processors threads created with
extern int pthread_attr_getaffinity_np (const pthread_attr_t *__attr,
__THROW __nonnull ((1, 3));
/* Get the default attributes used by pthread_create in this process. */
extern int pthread_getattr_default_np (pthread_attr_t *__attr)
/* Set the default attributes to be used by pthread_create in this
extern int pthread_setattr_default_np (const pthread_attr_t *__attr)
/* Initialize thread attribute *ATTR with attributes corresponding to the
already running thread TH. It shall be called on uninitialized ATTR
and destroyed with pthread_attr_destroy when no longer needed. */
extern int pthread_getattr_np (pthread_t __th, pthread_attr_t *__attr)
/* Functions for scheduling control. */
/* Set the scheduling parameters for TARGET_THREAD according to POLICY
extern int pthread_setschedparam (pthread_t __target_thread, int __policy,
const struct sched_param *__param)
/* Return in *POLICY and *PARAM the scheduling parameters for TARGET_THREAD. */
extern int pthread_getschedparam (pthread_t __target_thread,
int *__restrict __policy,
struct sched_param *__restrict __param)
__THROW __nonnull ((2, 3));
/* Set the scheduling priority for TARGET_THREAD. */
extern int pthread_setschedprio (pthread_t __target_thread, int __prio)
/* Get thread name visible in the kernel and its interfaces. */
extern int pthread_getname_np (pthread_t __target_thread, char *__buf,
/* Set thread name visible in the kernel and its interfaces. */
extern int pthread_setname_np (pthread_t __target_thread, const char *__name)
/* Determine level of concurrency. */
extern int pthread_getconcurrency (void) __THROW;
/* Set new concurrency level to LEVEL. */
extern int pthread_setconcurrency (int __level) __THROW;
/* Yield the processor to another thread or process.
This function is similar to the POSIX `sched_yield' function but
might be differently implemented in the case of a m-on-n thread
extern int pthread_yield (void) __THROW;
/* Limit specified thread TH to run only on the processors represented
extern int pthread_setaffinity_np (pthread_t __th, size_t __cpusetsize,
const cpu_set_t *__cpuset)
/* Get bit set in CPUSET representing the processors TH can run on. */
extern int pthread_getaffinity_np (pthread_t __th, size_t __cpusetsize,
/* Functions for handling initialization. */
/* Guarantee that the initialization function INIT_ROUTINE will be called
only once, even if pthread_once is executed several times with the
same ONCE_CONTROL argument. ONCE_CONTROL must point to a static or
extern variable initialized to PTHREAD_ONCE_INIT.
The initialization functions might throw exception which is why
this function is not marked with __THROW. */
extern int pthread_once (pthread_once_t *__once_control,
void (*__init_routine) (void)) __nonnull ((1, 2));
/* Functions for handling cancellation.