libc/include/pthread.h - android_bionic - Gitiles

 /*
  * Copyright (C) 2008 The Android Open Source Project
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *  * Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  *  * 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.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "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 THE
  * COPYRIGHT OWNER OR CONTRIBUTORS 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.
  */

 #pragma once

 /**
  * @file pthread.h
  * @brief POSIX threads.
  */

 #include <sys/cdefs.h>

 #include <limits.h>
 #include <bits/page_size.h>
 #include <bits/pthread_types.h>
 #include <sched.h>
 #include <sys/types.h>
 #include <time.h>

 __BEGIN_DECLS

 enum {
   PTHREAD_MUTEX_NORMAL = 0,
   PTHREAD_MUTEX_RECURSIVE = 1,
   PTHREAD_MUTEX_ERRORCHECK = 2,

   PTHREAD_MUTEX_ERRORCHECK_NP = PTHREAD_MUTEX_ERRORCHECK,
   PTHREAD_MUTEX_RECURSIVE_NP  = PTHREAD_MUTEX_RECURSIVE,

   PTHREAD_MUTEX_DEFAULT = PTHREAD_MUTEX_NORMAL
 };

 #define PTHREAD_MUTEX_INITIALIZER { { ((PTHREAD_MUTEX_NORMAL & 3) << 14) } }
 #define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP { { ((PTHREAD_MUTEX_RECURSIVE & 3) << 14) } }
 #define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP { { ((PTHREAD_MUTEX_ERRORCHECK & 3) << 14) } }

 #define PTHREAD_COND_INITIALIZER  { { 0 } }
 #define PTHREAD_COND_INITIALIZER_MONOTONIC_NP  { { 1 << 1 } }

 #define PTHREAD_RWLOCK_INITIALIZER  { { 0 } }

 enum {
   PTHREAD_RWLOCK_PREFER_READER_NP = 0,
   PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP = 1,
 };

 #define PTHREAD_ONCE_INIT 0

 #define PTHREAD_BARRIER_SERIAL_THREAD (-1)

 #if defined(__LP64__)
 #define PTHREAD_STACK_MIN 16384
 #else
 #define PTHREAD_STACK_MIN 8192
 #endif

 #define PTHREAD_CREATE_DETACHED 1
 #define PTHREAD_CREATE_JOINABLE 0

 #define PTHREAD_EXPLICIT_SCHED 0
 #define PTHREAD_INHERIT_SCHED 1

 #define PTHREAD_PRIO_NONE 0
 #define PTHREAD_PRIO_INHERIT 1

 #define PTHREAD_PROCESS_PRIVATE 0
 #define PTHREAD_PROCESS_SHARED 1

 #define PTHREAD_SCOPE_SYSTEM 0
 #define PTHREAD_SCOPE_PROCESS 1

 int pthread_atfork(void (* _Nullable __prepare)(void), void (* _Nullable __parent)(void), void (* _Nullable __child)(void));

 int pthread_attr_destroy(pthread_attr_t* _Nonnull __attr);
 int pthread_attr_getdetachstate(const pthread_attr_t* _Nonnull __attr, int* _Nonnull __state);
 int pthread_attr_getguardsize(const pthread_attr_t* _Nonnull __attr, size_t* _Nonnull __size);

 #if __BIONIC_AVAILABILITY_GUARD(28)
 int pthread_attr_getinheritsched(const pthread_attr_t* _Nonnull __attr, int* _Nonnull __flag) __INTRODUCED_IN(28);
 #endif /* __BIONIC_AVAILABILITY_GUARD(28) */

 int pthread_attr_getschedparam(const pthread_attr_t* _Nonnull __attr, struct sched_param* _Nonnull __param);
 int pthread_attr_getschedpolicy(const pthread_attr_t* _Nonnull __attr, int* _Nonnull __policy);
 int pthread_attr_getscope(const pthread_attr_t* _Nonnull __attr, int* _Nonnull __scope);
 int pthread_attr_getstack(const pthread_attr_t* _Nonnull __attr, void* _Nullable * _Nonnull __addr, size_t* _Nonnull __size);
 int pthread_attr_getstacksize(const pthread_attr_t* _Nonnull __attr, size_t* _Nonnull __size);
 int pthread_attr_init(pthread_attr_t* _Nonnull __attr);
 int pthread_attr_setdetachstate(pthread_attr_t* _Nonnull __attr, int __state);
 int pthread_attr_setguardsize(pthread_attr_t* _Nonnull __attr, size_t __size);

 #if __BIONIC_AVAILABILITY_GUARD(28)
 int pthread_attr_setinheritsched(pthread_attr_t* _Nonnull __attr, int __flag) __INTRODUCED_IN(28);
 #endif /* __BIONIC_AVAILABILITY_GUARD(28) */

 int pthread_attr_setschedparam(pthread_attr_t* _Nonnull __attr, const struct sched_param* _Nonnull __param);
 int pthread_attr_setschedpolicy(pthread_attr_t* _Nonnull __attr, int __policy);
 int pthread_attr_setscope(pthread_attr_t* _Nonnull __attr, int __scope);
 int pthread_attr_setstack(pthread_attr_t* _Nonnull __attr, void* _Nonnull __addr, size_t __size);
 int pthread_attr_setstacksize(pthread_attr_t* _Nonnull __addr, size_t __size);

 int pthread_condattr_destroy(pthread_condattr_t* _Nonnull __attr);
 int pthread_condattr_getclock(const pthread_condattr_t* _Nonnull __attr, clockid_t* _Nonnull __clock);
 int pthread_condattr_getpshared(const pthread_condattr_t* _Nonnull __attr, int* _Nonnull __shared);
 int pthread_condattr_init(pthread_condattr_t* _Nonnull __attr);
 int pthread_condattr_setclock(pthread_condattr_t* _Nonnull __attr, clockid_t __clock);
 int pthread_condattr_setpshared(pthread_condattr_t* _Nonnull __attr, int __shared);

 int pthread_cond_broadcast(pthread_cond_t* _Nonnull __cond);

 #if __BIONIC_AVAILABILITY_GUARD(30)
 int pthread_cond_clockwait(pthread_cond_t* _Nonnull __cond, pthread_mutex_t* _Nonnull __mutex, clockid_t __clock,
                            const struct timespec* _Nullable __timeout) __INTRODUCED_IN(30);
 #endif /* __BIONIC_AVAILABILITY_GUARD(30) */

 int pthread_cond_destroy(pthread_cond_t* _Nonnull __cond);
 int pthread_cond_init(pthread_cond_t* _Nonnull __cond, const pthread_condattr_t* _Nullable __attr);
 int pthread_cond_signal(pthread_cond_t* _Nonnull __cond);
 int pthread_cond_timedwait(pthread_cond_t* _Nonnull __cond, pthread_mutex_t* _Nonnull __mutex, const struct timespec* _Nullable __timeout);
 /*
  * Condition variables use CLOCK_REALTIME by default for their timeouts, however that is
  * typically inappropriate, since that clock can change dramatically, causing the timeout to
  * either expire earlier or much later than intended.
  * Condition variables have an initialization option to use CLOCK_MONOTONIC, and in addition,
  * Android provides pthread_cond_timedwait_monotonic_np to use CLOCK_MONOTONIC on a condition
  * variable for this single wait no matter how it was initialized.
  * Note that pthread_cond_clockwait() allows specifying an arbitrary clock and has superseded this
  * function.
  */

 #if (!defined(__LP64__)) || (defined(__LP64__) && __ANDROID_API__ >= 28)
 int pthread_cond_timedwait_monotonic_np(pthread_cond_t* _Nonnull __cond, pthread_mutex_t* _Nonnull __mutex,
                                         const struct timespec* _Nullable __timeout) __INTRODUCED_IN_64(28);
 #endif /* (!defined(__LP64__)) || (defined(__LP64__) && __ANDROID_API__ >= 28) */

 int pthread_cond_wait(pthread_cond_t* _Nonnull __cond, pthread_mutex_t* _Nonnull __mutex);

 int pthread_create(pthread_t* _Nonnull __pthread_ptr, pthread_attr_t const* _Nullable __attr, void* _Nullable (* _Nonnull __start_routine)(void* _Nullable), void* _Nullable);

 int pthread_detach(pthread_t __pthread);
 void pthread_exit(void* _Nullable __return_value) __noreturn;

 int pthread_equal(pthread_t __lhs, pthread_t __rhs);

 int pthread_getattr_np(pthread_t __pthread, pthread_attr_t* _Nonnull __attr);

 int pthread_getcpuclockid(pthread_t __pthread, clockid_t* _Nonnull __clock);

 void* _Nullable pthread_getspecific(pthread_key_t __key);

 pid_t pthread_gettid_np(pthread_t __pthread);

 int pthread_join(pthread_t __pthread, void* _Nullable * _Nullable __return_value_ptr);

 /**
  * [pthread_key_create(3)](https://man7.org/linux/man-pages/man3/pthread_key_create.3p.html)
  * creates a key for thread-specific data.
  *
  * There is a limit of `PTHREAD_KEYS_MAX` keys per process, but most callers
  * should just use the C or C++ `thread_local` storage specifier anyway. When
  * targeting new enough OS versions, the compiler will automatically use
  * ELF TLS; when targeting old OS versions the emutls implementation will
  * multiplex pthread keys behind the scenes, using one per library rather than
  * one per thread-local variable. If you are implementing the runtime for a
  * different language, you should consider similar implementation choices and
  * avoid a direct one-to-one mapping from thread locals to pthread keys.
  *
  * Returns 0 on success and returns an error number on failure.
  */
 int pthread_key_create(pthread_key_t* _Nonnull __key_ptr, void (* _Nullable __key_destructor)(void* _Nullable));

 /**
  * [pthread_key_delete(3)](https://man7.org/linux/man-pages/man3/pthread_key_delete.3p.html)
  * deletes a key for thread-specific data.
  *
  * Returns 0 on success and returns an error number on failure.
  */
 int pthread_key_delete(pthread_key_t __key);

 int pthread_mutexattr_destroy(pthread_mutexattr_t* _Nonnull __attr);
 int pthread_mutexattr_getpshared(const pthread_mutexattr_t* _Nonnull __attr, int* _Nonnull __shared);
 int pthread_mutexattr_gettype(const pthread_mutexattr_t* _Nonnull __attr, int* _Nonnull __type);

 #if __BIONIC_AVAILABILITY_GUARD(28)
 int pthread_mutexattr_getprotocol(const pthread_mutexattr_t* _Nonnull __attr, int* _Nonnull __protocol) __INTRODUCED_IN(28);
 #endif /* __BIONIC_AVAILABILITY_GUARD(28) */

 int pthread_mutexattr_init(pthread_mutexattr_t* _Nonnull __attr);
 int pthread_mutexattr_setpshared(pthread_mutexattr_t* _Nonnull __attr, int __shared);
 int pthread_mutexattr_settype(pthread_mutexattr_t* _Nonnull __attr, int __type);

 #if __BIONIC_AVAILABILITY_GUARD(28)
 int pthread_mutexattr_setprotocol(pthread_mutexattr_t* _Nonnull __attr, int __protocol) __INTRODUCED_IN(28);
 #endif /* __BIONIC_AVAILABILITY_GUARD(28) */


 #if __BIONIC_AVAILABILITY_GUARD(30)
 int pthread_mutex_clocklock(pthread_mutex_t* _Nonnull __mutex, clockid_t __clock,
                             const struct timespec* _Nullable __abstime) __INTRODUCED_IN(30);
 #endif /* __BIONIC_AVAILABILITY_GUARD(30) */

 int pthread_mutex_destroy(pthread_mutex_t* _Nonnull __mutex);
 int pthread_mutex_init(pthread_mutex_t* _Nonnull __mutex, const pthread_mutexattr_t* _Nullable __attr);
 int pthread_mutex_lock(pthread_mutex_t* _Nonnull __mutex);
 int pthread_mutex_timedlock(pthread_mutex_t* _Nonnull __mutex, const struct timespec* _Nullable __timeout);

 /*
  * POSIX historically only supported using pthread_mutex_timedlock() with CLOCK_REALTIME, however
  * that is typically inappropriate, since that clock can change dramatically, causing the timeout to
  * either expire earlier or much later than intended.
  * This function is added to use a timespec based on CLOCK_MONOTONIC that does not suffer
  * from this issue.
  * Note that pthread_mutex_clocklock() allows specifying an arbitrary clock and has superseded this
  * function.
  */

 #if __BIONIC_AVAILABILITY_GUARD(28)
 int pthread_mutex_timedlock_monotonic_np(pthread_mutex_t* _Nonnull __mutex, const struct timespec* _Nullable __timeout)
     __INTRODUCED_IN(28);
 #endif /* __BIONIC_AVAILABILITY_GUARD(28) */

 int pthread_mutex_trylock(pthread_mutex_t* _Nonnull __mutex);
 int pthread_mutex_unlock(pthread_mutex_t* _Nonnull __mutex);

 int pthread_once(pthread_once_t* _Nonnull __once, void (* _Nonnull __init_routine)(void));

 int pthread_rwlockattr_init(pthread_rwlockattr_t* _Nonnull __attr);
 int pthread_rwlockattr_destroy(pthread_rwlockattr_t* _Nonnull __attr);
 int pthread_rwlockattr_getpshared(const pthread_rwlockattr_t* _Nonnull __attr, int* _Nonnull __shared);
 int pthread_rwlockattr_setpshared(pthread_rwlockattr_t* _Nonnull __attr, int __shared);

 #if __BIONIC_AVAILABILITY_GUARD(23)
 int pthread_rwlockattr_getkind_np(const pthread_rwlockattr_t* _Nonnull __attr, int* _Nonnull __kind)
   __INTRODUCED_IN(23);
 int pthread_rwlockattr_setkind_np(pthread_rwlockattr_t* _Nonnull __attr, int __kind) __INTRODUCED_IN(23);
 #endif /* __BIONIC_AVAILABILITY_GUARD(23) */


 #if __BIONIC_AVAILABILITY_GUARD(30)
 int pthread_rwlock_clockrdlock(pthread_rwlock_t* _Nonnull __rwlock, clockid_t __clock,
                                const struct timespec* _Nullable __timeout) __INTRODUCED_IN(30);
 int pthread_rwlock_clockwrlock(pthread_rwlock_t* _Nonnull __rwlock, clockid_t __clock,
                                const struct timespec* _Nullable __timeout) __INTRODUCED_IN(30);
 #endif /* __BIONIC_AVAILABILITY_GUARD(30) */

 int pthread_rwlock_destroy(pthread_rwlock_t* _Nonnull __rwlock);
 int pthread_rwlock_init(pthread_rwlock_t* _Nonnull __rwlock, const pthread_rwlockattr_t* _Nullable __attr);
 int pthread_rwlock_rdlock(pthread_rwlock_t* _Nonnull __rwlock);
 int pthread_rwlock_timedrdlock(pthread_rwlock_t* _Nonnull __rwlock, const struct timespec* _Nullable __timeout);
 /* See the comment on pthread_mutex_timedlock_monotonic_np for usage of this function. */

 #if __BIONIC_AVAILABILITY_GUARD(28)
 int pthread_rwlock_timedrdlock_monotonic_np(pthread_rwlock_t* _Nonnull __rwlock,
                                             const struct timespec* _Nullable __timeout) __INTRODUCED_IN(28);
 #endif /* __BIONIC_AVAILABILITY_GUARD(28) */

 int pthread_rwlock_timedwrlock(pthread_rwlock_t* _Nonnull __rwlock, const struct timespec* _Nullable __timeout);
 /* See the comment on pthread_mutex_timedlock_monotonic_np for usage of this function. */

 #if __BIONIC_AVAILABILITY_GUARD(28)
 int pthread_rwlock_timedwrlock_monotonic_np(pthread_rwlock_t* _Nonnull __rwlock,
                                             const struct timespec* _Nullable __timeout) __INTRODUCED_IN(28);
 #endif /* __BIONIC_AVAILABILITY_GUARD(28) */

 int pthread_rwlock_tryrdlock(pthread_rwlock_t* _Nonnull __rwlock);
 int pthread_rwlock_trywrlock(pthread_rwlock_t* _Nonnull __rwlock);
 int pthread_rwlock_unlock(pthread_rwlock_t* _Nonnull __rwlock);
 int pthread_rwlock_wrlock(pthread_rwlock_t* _Nonnull __rwlock);


 #if __BIONIC_AVAILABILITY_GUARD(24)
 int pthread_barrierattr_init(pthread_barrierattr_t* _Nonnull __attr) __INTRODUCED_IN(24);
 int pthread_barrierattr_destroy(pthread_barrierattr_t* _Nonnull __attr) __INTRODUCED_IN(24);
 int pthread_barrierattr_getpshared(const pthread_barrierattr_t* _Nonnull __attr, int* _Nonnull __shared) __INTRODUCED_IN(24);
 int pthread_barrierattr_setpshared(pthread_barrierattr_t* _Nonnull __attr, int __shared) __INTRODUCED_IN(24);

 int pthread_barrier_init(pthread_barrier_t* _Nonnull __barrier, const pthread_barrierattr_t* _Nullable __attr, unsigned __count) __INTRODUCED_IN(24);
 int pthread_barrier_destroy(pthread_barrier_t* _Nonnull __barrier) __INTRODUCED_IN(24);
 int pthread_barrier_wait(pthread_barrier_t* _Nonnull __barrier) __INTRODUCED_IN(24);

 int pthread_spin_destroy(pthread_spinlock_t* _Nonnull __spinlock) __INTRODUCED_IN(24);
 int pthread_spin_init(pthread_spinlock_t* _Nonnull __spinlock, int __shared) __INTRODUCED_IN(24);
 int pthread_spin_lock(pthread_spinlock_t* _Nonnull __spinlock) __INTRODUCED_IN(24);
 int pthread_spin_trylock(pthread_spinlock_t* _Nonnull __spinlock) __INTRODUCED_IN(24);
 int pthread_spin_unlock(pthread_spinlock_t* _Nonnull __spinlock) __INTRODUCED_IN(24);
 #endif /* __BIONIC_AVAILABILITY_GUARD(24) */


 pthread_t pthread_self(void) __attribute_const__;

 #if defined(__USE_GNU) && __BIONIC_AVAILABILITY_GUARD(26)
 /**
  * [pthread_getname_np(3)](https://man7.org/linux/man-pages/man3/pthread_getname_np.3.html)
  * gets the name of the given thread.
  * Names are at most 16 bytes (including '\0').
  *
  * Returns 0 on success and returns an error number on failure.
  *
  * Available since API level 26.
  */
 int pthread_getname_np(pthread_t __pthread, char* _Nonnull __buf, size_t __n) __INTRODUCED_IN(26);
 #endif

 /**
  * [pthread_setname_np(3)](https://man7.org/linux/man-pages/man3/pthread_setname_np.3.html)
  * sets the name of the given thread.
  * Names are at most 16 bytes (including '\0').
  * Truncation must be done by the caller;
  * calls with longer names will fail with ERANGE.
  *
  * Returns 0 on success and returns an error number on failure.
  *
  * This should only have been available under _GNU_SOURCE,
  * but is always available on Android by historical accident.
  */
 int pthread_setname_np(pthread_t __pthread, const char* _Nonnull __name);

 /**
  * [pthread_getaffinity_np(3)](https://man7.org/linux/man-pages/man3/pthread_getaffinity_np.3.html)
  * gets the CPU affinity mask for the given thread.
  *
  * Returns 0 on success and returns an error number on failure.
  *
  * Available since API level 36.
  * See sched_getaffinity() and pthread_gettid_np() for greater portability.
  */
 #if defined(__USE_GNU) && __BIONIC_AVAILABILITY_GUARD(36)
 int pthread_getaffinity_np(pthread_t __pthread, size_t __cpu_set_size, cpu_set_t* __cpu_set) __INTRODUCED_IN(36);
 #endif

 /**
  * [pthread_setaffinity_np(3)](https://man7.org/linux/man-pages/man3/pthread_setaffinity_np.3.html)
  * sets the CPU affinity mask for the given thread.
  *
  * Returns 0 on success and returns an error number on failure.
  *
  * Available since API level 36.
  * See sched_getaffinity() and pthread_gettid_np() for greater portability.
  */
 #if defined(__USE_GNU) && __BIONIC_AVAILABILITY_GUARD(36)
 int pthread_setaffinity_np(pthread_t __pthread, size_t __cpu_set_size, const cpu_set_t* __cpu_set) __INTRODUCED_IN(36);
 #endif

 /**
  * [pthread_setschedparam(3)](https://man7.org/linux/man-pages/man3/pthread_setschedparam.3.html)
  * sets the scheduler policy and parameters of the given thread.
  *
  * This call is not useful to applications on Android, because they don't
  * have permission to set their scheduling policy, and the only priority
  * for their policy is 0 anyway. If you only need to set your scheduling
  * priority, see setpriority() instead.
  *
  * Returns 0 on success and returns an error number on failure.
  */
 int pthread_setschedparam(pthread_t __pthread, int __policy, const struct sched_param* _Nonnull __param);

 /**
  * [pthread_getschedparam(3)](https://man7.org/linux/man-pages/man3/pthread_getschedparam.3.html)
  * gets the scheduler policy and parameters of the given thread.
  *
  * Returns 0 on success and returns an error number on failure.
  */
 int pthread_getschedparam(pthread_t __pthread, int* _Nonnull __policy, struct sched_param* _Nonnull __param);

 /**
  * [pthread_setschedprio(3)](https://man7.org/linux/man-pages/man3/pthread_setschedprio.3.html)
  * sets the scheduler priority of the given thread.
  *
  * This call is not useful to applications on Android, because they don't
  * have permission to set their scheduling policy, and the only priority
  * for their policy is 0 anyway. If you only need to set your scheduling
  * priority, see setpriority() instead.
  *
  * Returns 0 on success and returns an error number on failure.
  *
  * Available since API level 28.
  */

 #if __BIONIC_AVAILABILITY_GUARD(28)
 int pthread_setschedprio(pthread_t __pthread, int __priority) __INTRODUCED_IN(28);
 #endif /* __BIONIC_AVAILABILITY_GUARD(28) */


 int pthread_setspecific(pthread_key_t __key, const void* _Nullable __value);

 typedef void (* _Nullable __pthread_cleanup_func_t)(void* _Nullable);

 typedef struct __pthread_cleanup_t {
   struct __pthread_cleanup_t*   _Nullable __cleanup_prev;
   __pthread_cleanup_func_t      _Nullable __cleanup_routine;
   void*                         _Nullable __cleanup_arg;
 } __pthread_cleanup_t;

 void __pthread_cleanup_push(__pthread_cleanup_t* _Nonnull c, __pthread_cleanup_func_t _Nullable, void* _Nullable);
 void __pthread_cleanup_pop(__pthread_cleanup_t* _Nonnull, int);

 /* Believe or not, the definitions of pthread_cleanup_push and
  * pthread_cleanup_pop below are correct. Posix states that these
  * can be implemented as macros that might introduce opening and
  * closing braces, and that using setjmp/longjmp/return/break/continue
  * between them results in undefined behavior.
  */
 #define  pthread_cleanup_push(routine, arg)                      \
     do {                                                         \
         __pthread_cleanup_t  __cleanup;                          \
         __pthread_cleanup_push( &__cleanup, (routine), (arg) );  \

 #define  pthread_cleanup_pop(execute)                  \
         __pthread_cleanup_pop( &__cleanup, (execute)); \
     } while (0);                                       \

 __END_DECLS
	/*
	* Copyright (C) 2008 The Android Open Source Project
	* All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	* * Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* * 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.
	*
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	* "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 THE
	* COPYRIGHT OWNER OR CONTRIBUTORS 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.
	*/

	#pragma once

	/**
	* @file pthread.h
	* @brief POSIX threads.
	*/

	#include <sys/cdefs.h>

	#include <limits.h>
	#include <bits/page_size.h>
	#include <bits/pthread_types.h>
	#include <sched.h>
	#include <sys/types.h>
	#include <time.h>

	__BEGIN_DECLS

	enum {
	PTHREAD_MUTEX_NORMAL = 0,
	PTHREAD_MUTEX_RECURSIVE = 1,
	PTHREAD_MUTEX_ERRORCHECK = 2,

	PTHREAD_MUTEX_ERRORCHECK_NP = PTHREAD_MUTEX_ERRORCHECK,
	PTHREAD_MUTEX_RECURSIVE_NP = PTHREAD_MUTEX_RECURSIVE,

	PTHREAD_MUTEX_DEFAULT = PTHREAD_MUTEX_NORMAL
	};

	#define PTHREAD_MUTEX_INITIALIZER { { ((PTHREAD_MUTEX_NORMAL & 3) << 14) } }
	#define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP { { ((PTHREAD_MUTEX_RECURSIVE & 3) << 14) } }
	#define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP { { ((PTHREAD_MUTEX_ERRORCHECK & 3) << 14) } }

	#define PTHREAD_COND_INITIALIZER { { 0 } }
	#define PTHREAD_COND_INITIALIZER_MONOTONIC_NP { { 1 << 1 } }

	#define PTHREAD_RWLOCK_INITIALIZER { { 0 } }

	enum {
	PTHREAD_RWLOCK_PREFER_READER_NP = 0,
	PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP = 1,
	};

	#define PTHREAD_ONCE_INIT 0

	#define PTHREAD_BARRIER_SERIAL_THREAD (-1)

	#if defined(__LP64__)
	#define PTHREAD_STACK_MIN 16384
	#else
	#define PTHREAD_STACK_MIN 8192
	#endif

	#define PTHREAD_CREATE_DETACHED 1
	#define PTHREAD_CREATE_JOINABLE 0

	#define PTHREAD_EXPLICIT_SCHED 0
	#define PTHREAD_INHERIT_SCHED 1

	#define PTHREAD_PRIO_NONE 0
	#define PTHREAD_PRIO_INHERIT 1

	#define PTHREAD_PROCESS_PRIVATE 0
	#define PTHREAD_PROCESS_SHARED 1

	#define PTHREAD_SCOPE_SYSTEM 0
	#define PTHREAD_SCOPE_PROCESS 1

	int pthread_atfork(void (* _Nullable __prepare)(void), void (* _Nullable __parent)(void), void (* _Nullable __child)(void));

	int pthread_attr_destroy(pthread_attr_t* _Nonnull __attr);
	int pthread_attr_getdetachstate(const pthread_attr_t* _Nonnull __attr, int* _Nonnull __state);
	int pthread_attr_getguardsize(const pthread_attr_t* _Nonnull __attr, size_t* _Nonnull __size);

	#if __BIONIC_AVAILABILITY_GUARD(28)
	int pthread_attr_getinheritsched(const pthread_attr_t* _Nonnull __attr, int* _Nonnull __flag) __INTRODUCED_IN(28);
	#endif /* __BIONIC_AVAILABILITY_GUARD(28) */

	int pthread_attr_getschedparam(const pthread_attr_t* _Nonnull __attr, struct sched_param* _Nonnull __param);
	int pthread_attr_getschedpolicy(const pthread_attr_t* _Nonnull __attr, int* _Nonnull __policy);
	int pthread_attr_getscope(const pthread_attr_t* _Nonnull __attr, int* _Nonnull __scope);
	int pthread_attr_getstack(const pthread_attr_t* _Nonnull __attr, void* _Nullable * _Nonnull __addr, size_t* _Nonnull __size);
	int pthread_attr_getstacksize(const pthread_attr_t* _Nonnull __attr, size_t* _Nonnull __size);
	int pthread_attr_init(pthread_attr_t* _Nonnull __attr);
	int pthread_attr_setdetachstate(pthread_attr_t* _Nonnull __attr, int __state);
	int pthread_attr_setguardsize(pthread_attr_t* _Nonnull __attr, size_t __size);

	#if __BIONIC_AVAILABILITY_GUARD(28)
	int pthread_attr_setinheritsched(pthread_attr_t* _Nonnull __attr, int __flag) __INTRODUCED_IN(28);
	#endif /* __BIONIC_AVAILABILITY_GUARD(28) */

	int pthread_attr_setschedparam(pthread_attr_t* _Nonnull __attr, const struct sched_param* _Nonnull __param);
	int pthread_attr_setschedpolicy(pthread_attr_t* _Nonnull __attr, int __policy);
	int pthread_attr_setscope(pthread_attr_t* _Nonnull __attr, int __scope);
	int pthread_attr_setstack(pthread_attr_t* _Nonnull __attr, void* _Nonnull __addr, size_t __size);
	int pthread_attr_setstacksize(pthread_attr_t* _Nonnull __addr, size_t __size);

	int pthread_condattr_destroy(pthread_condattr_t* _Nonnull __attr);
	int pthread_condattr_getclock(const pthread_condattr_t* _Nonnull __attr, clockid_t* _Nonnull __clock);
	int pthread_condattr_getpshared(const pthread_condattr_t* _Nonnull __attr, int* _Nonnull __shared);
	int pthread_condattr_init(pthread_condattr_t* _Nonnull __attr);
	int pthread_condattr_setclock(pthread_condattr_t* _Nonnull __attr, clockid_t __clock);
	int pthread_condattr_setpshared(pthread_condattr_t* _Nonnull __attr, int __shared);

	int pthread_cond_broadcast(pthread_cond_t* _Nonnull __cond);

	#if __BIONIC_AVAILABILITY_GUARD(30)
	int pthread_cond_clockwait(pthread_cond_t* _Nonnull __cond, pthread_mutex_t* _Nonnull __mutex, clockid_t __clock,
	const struct timespec* _Nullable __timeout) __INTRODUCED_IN(30);
	#endif /* __BIONIC_AVAILABILITY_GUARD(30) */

	int pthread_cond_destroy(pthread_cond_t* _Nonnull __cond);
	int pthread_cond_init(pthread_cond_t* _Nonnull __cond, const pthread_condattr_t* _Nullable __attr);
	int pthread_cond_signal(pthread_cond_t* _Nonnull __cond);
	int pthread_cond_timedwait(pthread_cond_t* _Nonnull __cond, pthread_mutex_t* _Nonnull __mutex, const struct timespec* _Nullable __timeout);
	/*
	* Condition variables use CLOCK_REALTIME by default for their timeouts, however that is
	* typically inappropriate, since that clock can change dramatically, causing the timeout to
	* either expire earlier or much later than intended.
	* Condition variables have an initialization option to use CLOCK_MONOTONIC, and in addition,
	* Android provides pthread_cond_timedwait_monotonic_np to use CLOCK_MONOTONIC on a condition
	* variable for this single wait no matter how it was initialized.
	* Note that pthread_cond_clockwait() allows specifying an arbitrary clock and has superseded this
	* function.
	*/

	#if (!defined(__LP64__)) \|\| (defined(__LP64__) && __ANDROID_API__ >= 28)
	int pthread_cond_timedwait_monotonic_np(pthread_cond_t* _Nonnull __cond, pthread_mutex_t* _Nonnull __mutex,
	const struct timespec* _Nullable __timeout) __INTRODUCED_IN_64(28);
	#endif /* (!defined(__LP64__)) \|\| (defined(__LP64__) && __ANDROID_API__ >= 28) */

	int pthread_cond_wait(pthread_cond_t* _Nonnull __cond, pthread_mutex_t* _Nonnull __mutex);

	int pthread_create(pthread_t* _Nonnull __pthread_ptr, pthread_attr_t const* _Nullable __attr, void* _Nullable (* _Nonnull __start_routine)(void* _Nullable), void* _Nullable);

	int pthread_detach(pthread_t __pthread);
	void pthread_exit(void* _Nullable __return_value) __noreturn;

	int pthread_equal(pthread_t __lhs, pthread_t __rhs);

	int pthread_getattr_np(pthread_t __pthread, pthread_attr_t* _Nonnull __attr);

	int pthread_getcpuclockid(pthread_t __pthread, clockid_t* _Nonnull __clock);

	void* _Nullable pthread_getspecific(pthread_key_t __key);

	pid_t pthread_gettid_np(pthread_t __pthread);

	int pthread_join(pthread_t __pthread, void* _Nullable * _Nullable __return_value_ptr);

	/**
	* [pthread_key_create(3)](https://man7.org/linux/man-pages/man3/pthread_key_create.3p.html)
	* creates a key for thread-specific data.
	*
	* There is a limit of `PTHREAD_KEYS_MAX` keys per process, but most callers
	* should just use the C or C++ `thread_local` storage specifier anyway. When
	* targeting new enough OS versions, the compiler will automatically use
	* ELF TLS; when targeting old OS versions the emutls implementation will
	* multiplex pthread keys behind the scenes, using one per library rather than
	* one per thread-local variable. If you are implementing the runtime for a
	* different language, you should consider similar implementation choices and
	* avoid a direct one-to-one mapping from thread locals to pthread keys.
	*
	* Returns 0 on success and returns an error number on failure.
	*/
	int pthread_key_create(pthread_key_t* _Nonnull __key_ptr, void (* _Nullable __key_destructor)(void* _Nullable));

	/**
	* [pthread_key_delete(3)](https://man7.org/linux/man-pages/man3/pthread_key_delete.3p.html)
	* deletes a key for thread-specific data.
	*
	* Returns 0 on success and returns an error number on failure.
	*/
	int pthread_key_delete(pthread_key_t __key);

	int pthread_mutexattr_destroy(pthread_mutexattr_t* _Nonnull __attr);
	int pthread_mutexattr_getpshared(const pthread_mutexattr_t* _Nonnull __attr, int* _Nonnull __shared);
	int pthread_mutexattr_gettype(const pthread_mutexattr_t* _Nonnull __attr, int* _Nonnull __type);

	#if __BIONIC_AVAILABILITY_GUARD(28)
	int pthread_mutexattr_getprotocol(const pthread_mutexattr_t* _Nonnull __attr, int* _Nonnull __protocol) __INTRODUCED_IN(28);
	#endif /* __BIONIC_AVAILABILITY_GUARD(28) */

	int pthread_mutexattr_init(pthread_mutexattr_t* _Nonnull __attr);
	int pthread_mutexattr_setpshared(pthread_mutexattr_t* _Nonnull __attr, int __shared);
	int pthread_mutexattr_settype(pthread_mutexattr_t* _Nonnull __attr, int __type);

	#if __BIONIC_AVAILABILITY_GUARD(28)
	int pthread_mutexattr_setprotocol(pthread_mutexattr_t* _Nonnull __attr, int __protocol) __INTRODUCED_IN(28);
	#endif /* __BIONIC_AVAILABILITY_GUARD(28) */



	#if __BIONIC_AVAILABILITY_GUARD(30)
	int pthread_mutex_clocklock(pthread_mutex_t* _Nonnull __mutex, clockid_t __clock,
	const struct timespec* _Nullable __abstime) __INTRODUCED_IN(30);
	#endif /* __BIONIC_AVAILABILITY_GUARD(30) */

	int pthread_mutex_destroy(pthread_mutex_t* _Nonnull __mutex);
	int pthread_mutex_init(pthread_mutex_t* _Nonnull __mutex, const pthread_mutexattr_t* _Nullable __attr);
	int pthread_mutex_lock(pthread_mutex_t* _Nonnull __mutex);
	int pthread_mutex_timedlock(pthread_mutex_t* _Nonnull __mutex, const struct timespec* _Nullable __timeout);

	/*
	* POSIX historically only supported using pthread_mutex_timedlock() with CLOCK_REALTIME, however
	* that is typically inappropriate, since that clock can change dramatically, causing the timeout to
	* either expire earlier or much later than intended.
	* This function is added to use a timespec based on CLOCK_MONOTONIC that does not suffer
	* from this issue.
	* Note that pthread_mutex_clocklock() allows specifying an arbitrary clock and has superseded this
	* function.
	*/

	#if __BIONIC_AVAILABILITY_GUARD(28)
	int pthread_mutex_timedlock_monotonic_np(pthread_mutex_t* _Nonnull __mutex, const struct timespec* _Nullable __timeout)
	__INTRODUCED_IN(28);
	#endif /* __BIONIC_AVAILABILITY_GUARD(28) */

	int pthread_mutex_trylock(pthread_mutex_t* _Nonnull __mutex);
	int pthread_mutex_unlock(pthread_mutex_t* _Nonnull __mutex);

	int pthread_once(pthread_once_t* _Nonnull __once, void (* _Nonnull __init_routine)(void));

	int pthread_rwlockattr_init(pthread_rwlockattr_t* _Nonnull __attr);
	int pthread_rwlockattr_destroy(pthread_rwlockattr_t* _Nonnull __attr);
	int pthread_rwlockattr_getpshared(const pthread_rwlockattr_t* _Nonnull __attr, int* _Nonnull __shared);
	int pthread_rwlockattr_setpshared(pthread_rwlockattr_t* _Nonnull __attr, int __shared);

	#if __BIONIC_AVAILABILITY_GUARD(23)
	int pthread_rwlockattr_getkind_np(const pthread_rwlockattr_t* _Nonnull __attr, int* _Nonnull __kind)
	__INTRODUCED_IN(23);
	int pthread_rwlockattr_setkind_np(pthread_rwlockattr_t* _Nonnull __attr, int __kind) __INTRODUCED_IN(23);
	#endif /* __BIONIC_AVAILABILITY_GUARD(23) */



	#if __BIONIC_AVAILABILITY_GUARD(30)
	int pthread_rwlock_clockrdlock(pthread_rwlock_t* _Nonnull __rwlock, clockid_t __clock,
	const struct timespec* _Nullable __timeout) __INTRODUCED_IN(30);
	int pthread_rwlock_clockwrlock(pthread_rwlock_t* _Nonnull __rwlock, clockid_t __clock,
	const struct timespec* _Nullable __timeout) __INTRODUCED_IN(30);
	#endif /* __BIONIC_AVAILABILITY_GUARD(30) */

	int pthread_rwlock_destroy(pthread_rwlock_t* _Nonnull __rwlock);
	int pthread_rwlock_init(pthread_rwlock_t* _Nonnull __rwlock, const pthread_rwlockattr_t* _Nullable __attr);
	int pthread_rwlock_rdlock(pthread_rwlock_t* _Nonnull __rwlock);
	int pthread_rwlock_timedrdlock(pthread_rwlock_t* _Nonnull __rwlock, const struct timespec* _Nullable __timeout);
	/* See the comment on pthread_mutex_timedlock_monotonic_np for usage of this function. */

	#if __BIONIC_AVAILABILITY_GUARD(28)
	int pthread_rwlock_timedrdlock_monotonic_np(pthread_rwlock_t* _Nonnull __rwlock,
	const struct timespec* _Nullable __timeout) __INTRODUCED_IN(28);
	#endif /* __BIONIC_AVAILABILITY_GUARD(28) */

	int pthread_rwlock_timedwrlock(pthread_rwlock_t* _Nonnull __rwlock, const struct timespec* _Nullable __timeout);
	/* See the comment on pthread_mutex_timedlock_monotonic_np for usage of this function. */

	#if __BIONIC_AVAILABILITY_GUARD(28)
	int pthread_rwlock_timedwrlock_monotonic_np(pthread_rwlock_t* _Nonnull __rwlock,
	const struct timespec* _Nullable __timeout) __INTRODUCED_IN(28);
	#endif /* __BIONIC_AVAILABILITY_GUARD(28) */

	int pthread_rwlock_tryrdlock(pthread_rwlock_t* _Nonnull __rwlock);
	int pthread_rwlock_trywrlock(pthread_rwlock_t* _Nonnull __rwlock);
	int pthread_rwlock_unlock(pthread_rwlock_t* _Nonnull __rwlock);
	int pthread_rwlock_wrlock(pthread_rwlock_t* _Nonnull __rwlock);


	#if __BIONIC_AVAILABILITY_GUARD(24)
	int pthread_barrierattr_init(pthread_barrierattr_t* _Nonnull __attr) __INTRODUCED_IN(24);
	int pthread_barrierattr_destroy(pthread_barrierattr_t* _Nonnull __attr) __INTRODUCED_IN(24);
	int pthread_barrierattr_getpshared(const pthread_barrierattr_t* _Nonnull __attr, int* _Nonnull __shared) __INTRODUCED_IN(24);
	int pthread_barrierattr_setpshared(pthread_barrierattr_t* _Nonnull __attr, int __shared) __INTRODUCED_IN(24);

	int pthread_barrier_init(pthread_barrier_t* _Nonnull __barrier, const pthread_barrierattr_t* _Nullable __attr, unsigned __count) __INTRODUCED_IN(24);
	int pthread_barrier_destroy(pthread_barrier_t* _Nonnull __barrier) __INTRODUCED_IN(24);
	int pthread_barrier_wait(pthread_barrier_t* _Nonnull __barrier) __INTRODUCED_IN(24);

	int pthread_spin_destroy(pthread_spinlock_t* _Nonnull __spinlock) __INTRODUCED_IN(24);
	int pthread_spin_init(pthread_spinlock_t* _Nonnull __spinlock, int __shared) __INTRODUCED_IN(24);
	int pthread_spin_lock(pthread_spinlock_t* _Nonnull __spinlock) __INTRODUCED_IN(24);
	int pthread_spin_trylock(pthread_spinlock_t* _Nonnull __spinlock) __INTRODUCED_IN(24);
	int pthread_spin_unlock(pthread_spinlock_t* _Nonnull __spinlock) __INTRODUCED_IN(24);
	#endif /* __BIONIC_AVAILABILITY_GUARD(24) */


	pthread_t pthread_self(void) __attribute_const__;

	#if defined(__USE_GNU) && __BIONIC_AVAILABILITY_GUARD(26)
	/**
	* [pthread_getname_np(3)](https://man7.org/linux/man-pages/man3/pthread_getname_np.3.html)
	* gets the name of the given thread.
	* Names are at most 16 bytes (including '\0').
	*
	* Returns 0 on success and returns an error number on failure.
	*
	* Available since API level 26.
	*/
	int pthread_getname_np(pthread_t __pthread, char* _Nonnull __buf, size_t __n) __INTRODUCED_IN(26);
	#endif

	/**
	* [pthread_setname_np(3)](https://man7.org/linux/man-pages/man3/pthread_setname_np.3.html)
	* sets the name of the given thread.
	* Names are at most 16 bytes (including '\0').
	* Truncation must be done by the caller;
	* calls with longer names will fail with ERANGE.
	*
	* Returns 0 on success and returns an error number on failure.
	*
	* This should only have been available under _GNU_SOURCE,
	* but is always available on Android by historical accident.
	*/
	int pthread_setname_np(pthread_t __pthread, const char* _Nonnull __name);

	/**
	* [pthread_getaffinity_np(3)](https://man7.org/linux/man-pages/man3/pthread_getaffinity_np.3.html)
	* gets the CPU affinity mask for the given thread.
	*
	* Returns 0 on success and returns an error number on failure.
	*
	* Available since API level 36.
	* See sched_getaffinity() and pthread_gettid_np() for greater portability.
	*/
	#if defined(__USE_GNU) && __BIONIC_AVAILABILITY_GUARD(36)
	int pthread_getaffinity_np(pthread_t __pthread, size_t __cpu_set_size, cpu_set_t* __cpu_set) __INTRODUCED_IN(36);
	#endif

	/**
	* [pthread_setaffinity_np(3)](https://man7.org/linux/man-pages/man3/pthread_setaffinity_np.3.html)
	* sets the CPU affinity mask for the given thread.
	*
	* Returns 0 on success and returns an error number on failure.
	*
	* Available since API level 36.
	* See sched_getaffinity() and pthread_gettid_np() for greater portability.
	*/
	#if defined(__USE_GNU) && __BIONIC_AVAILABILITY_GUARD(36)
	int pthread_setaffinity_np(pthread_t __pthread, size_t __cpu_set_size, const cpu_set_t* __cpu_set) __INTRODUCED_IN(36);
	#endif

	/**
	* [pthread_setschedparam(3)](https://man7.org/linux/man-pages/man3/pthread_setschedparam.3.html)
	* sets the scheduler policy and parameters of the given thread.
	*
	* This call is not useful to applications on Android, because they don't
	* have permission to set their scheduling policy, and the only priority
	* for their policy is 0 anyway. If you only need to set your scheduling
	* priority, see setpriority() instead.
	*
	* Returns 0 on success and returns an error number on failure.
	*/
	int pthread_setschedparam(pthread_t __pthread, int __policy, const struct sched_param* _Nonnull __param);

	/**
	* [pthread_getschedparam(3)](https://man7.org/linux/man-pages/man3/pthread_getschedparam.3.html)
	* gets the scheduler policy and parameters of the given thread.
	*
	* Returns 0 on success and returns an error number on failure.
	*/
	int pthread_getschedparam(pthread_t __pthread, int* _Nonnull __policy, struct sched_param* _Nonnull __param);

	/**
	* [pthread_setschedprio(3)](https://man7.org/linux/man-pages/man3/pthread_setschedprio.3.html)
	* sets the scheduler priority of the given thread.
	*
	* This call is not useful to applications on Android, because they don't
	* have permission to set their scheduling policy, and the only priority
	* for their policy is 0 anyway. If you only need to set your scheduling
	* priority, see setpriority() instead.
	*
	* Returns 0 on success and returns an error number on failure.
	*
	* Available since API level 28.
	*/

	#if __BIONIC_AVAILABILITY_GUARD(28)
	int pthread_setschedprio(pthread_t __pthread, int __priority) __INTRODUCED_IN(28);
	#endif /* __BIONIC_AVAILABILITY_GUARD(28) */


	int pthread_setspecific(pthread_key_t __key, const void* _Nullable __value);

	typedef void (* _Nullable __pthread_cleanup_func_t)(void* _Nullable);

	typedef struct __pthread_cleanup_t {
	struct __pthread_cleanup_t* _Nullable __cleanup_prev;
	__pthread_cleanup_func_t _Nullable __cleanup_routine;
	void* _Nullable __cleanup_arg;
	} __pthread_cleanup_t;

	void __pthread_cleanup_push(__pthread_cleanup_t* _Nonnull c, __pthread_cleanup_func_t _Nullable, void* _Nullable);
	void __pthread_cleanup_pop(__pthread_cleanup_t* _Nonnull, int);

	/* Believe or not, the definitions of pthread_cleanup_push and
	* pthread_cleanup_pop below are correct. Posix states that these
	* can be implemented as macros that might introduce opening and
	* closing braces, and that using setjmp/longjmp/return/break/continue
	* between them results in undefined behavior.
	*/
	#define pthread_cleanup_push(routine, arg) \
	do { \
	__pthread_cleanup_t __cleanup; \
	__pthread_cleanup_push( &__cleanup, (routine), (arg) ); \

	#define pthread_cleanup_pop(execute) \
	__pthread_cleanup_pop( &__cleanup, (execute)); \
	} while (0); \

	__END_DECLS