hurd: Add hurd thread library

Contributed by

Agustina Arzille <avarzille@riseup.net>
Amos Jeffries <squid3@treenet.co.nz>
David Michael <fedora.dm0@gmail.com>
Marco Gerards <marco@gnu.org>
Marcus Brinkmann <marcus@gnu.org>
Neal H. Walfield <neal@gnu.org>
Pino Toscano <toscano.pino@tiscali.it>
Richard Braun <rbraun@sceen.net>
Roland McGrath <roland@gnu.org>
Samuel Thibault <samuel.thibault@ens-lyon.org>
Thomas DiModica <ricinwich@yahoo.com>
Thomas Schwinge <tschwinge@gnu.org>

	* htl: New directory.
	* sysdeps/htl: New directory.
	* sysdeps/hurd/htl: New directory.
	* sysdeps/i386/htl: New directory.
	* sysdeps/mach/htl: New directory.
	* sysdeps/mach/hurd/htl: New directory.
	* sysdeps/mach/hurd/i386/htl: New directory.
	* nscd/Depend, resolv/Depend, rt/Depend: Add htl dependency.
	* sysdeps/mach/hurd/i386/Implies: Add mach/hurd/i386/htl imply.
	* sysdeps/mach/hurd/i386/libpthread.abilist: New file.

1 files changed, 883 insertions, 0 deletions

diff --git a/sysdeps/htl/pthread.h b/sysdeps/htl/pthread.h
new file mode 100644
index 0000000000..91ab9b319a
--- /dev/null
+++ b/sysdeps/htl/pthread.h
@@ -0,0 +1,883 @@
+/* Posix threads.  Hurd version.
+   Copyright (C) 2000-2018 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If
+   not, see <http://www.gnu.org/licenses/>.  */
+
+/*
+ *	POSIX Threads Extension: ???			<pthread.h>
+ */
+
+#ifndef _PTHREAD_H
+#define _PTHREAD_H	1
+
+#include <features.h>
+
+#include <sys/cdefs.h>
+#ifndef __extern_inline
+/* GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+   inline semantics, unless -fgnu89-inline is used.  */
+# if !defined __cplusplus || __GNUC_PREREQ (4,3)
+#  if defined __GNUC_STDC_INLINE__ || defined __cplusplus
+#   define __extern_inline extern __inline __attribute__ ((__gnu_inline__))
+#   if __GNUC_PREREQ (4,3)
+#    define __extern_always_inline \
+   extern __always_inline __attribute__ ((__gnu_inline__, __artificial__))
+#   else
+#    define __extern_always_inline \
+   extern __always_inline __attribute__ ((__gnu_inline__))
+#   endif
+#  else
+#   define __extern_inline extern __inline
+#   define __extern_always_inline extern __always_inline
+#  endif
+# endif
+#endif
+
+#include <sched.h>
+#include <time.h>
+
+__BEGIN_DECLS
+
+#include <bits/pthreadtypes.h>
+
+#include <bits/pthread.h>
+
+/* Possible values for the process shared attribute.  */
+#define PTHREAD_PROCESS_PRIVATE __PTHREAD_PROCESS_PRIVATE
+#define PTHREAD_PROCESS_SHARED __PTHREAD_PROCESS_SHARED
+
+
+/* Thread attributes.  */
+
+/* Possible values for the inheritsched attribute.  */
+#define PTHREAD_EXPLICIT_SCHED __PTHREAD_EXPLICIT_SCHED
+#define PTHREAD_INHERIT_SCHED __PTHREAD_INHERIT_SCHED
+
+/* Possible values for the `contentionscope' attribute.  */
+#define PTHREAD_SCOPE_SYSTEM __PTHREAD_SCOPE_SYSTEM
+#define PTHREAD_SCOPE_PROCESS __PTHREAD_SCOPE_PROCESS
+
+/* Possible values for the `detachstate' attribute.  */
+#define PTHREAD_CREATE_JOINABLE __PTHREAD_CREATE_JOINABLE
+#define PTHREAD_CREATE_DETACHED __PTHREAD_CREATE_DETACHED
+
+#include <bits/types/struct___pthread_attr.h>
+
+/* Initialize the thread attribute object in *ATTR to the default
+   values.  */
+extern int pthread_attr_init (pthread_attr_t *__attr) __THROW __nonnull ((1));
+
+/* Destroy the thread attribute object in *ATTR.  */
+extern int pthread_attr_destroy (pthread_attr_t *__attr)
+	__THROW __nonnull ((1));
+
+
+/* Return the value of the inheritsched attribute in *ATTR in
+   *INHERITSCHED.  */
+extern int pthread_attr_getinheritsched (const pthread_attr_t *__restrict __attr,
+					 int *__restrict __inheritsched)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the inheritsched attribute in *ATTR to
+   INHERITSCHED.  */
+extern int pthread_attr_setinheritsched (pthread_attr_t *__attr,
+					 int __inheritsched)
+	__THROW __nonnull ((1));
+
+
+/* Return the value of the schedparam attribute in *ATTR in *PARAM.  */
+extern int pthread_attr_getschedparam (const pthread_attr_t *__restrict __attr,
+				       struct sched_param *__restrict __param)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the schedparam attribute in *ATTR to PARAM.  */
+extern int pthread_attr_setschedparam (pthread_attr_t *__restrict __attr,
+				       const struct sched_param *__restrict
+				       __param) __THROW __nonnull ((1, 2));
+
+
+/* Return the value of the schedpolicy attribute in *ATTR to *POLICY.  */
+extern int pthread_attr_getschedpolicy (const pthread_attr_t *__restrict __attr,
+					int *__restrict __policy)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the schedpolicy attribute in *ATTR to POLICY.  */
+extern int pthread_attr_setschedpolicy (pthread_attr_t *__attr,
+					int __policy)
+	__THROW __nonnull ((1));
+
+
+/* Return the value of the contentionscope attribute in *ATTR in
+   *CONTENTIONSCOPE.  */
+extern int pthread_attr_getscope (const pthread_attr_t *__restrict __attr,
+				  int *__restrict __contentionscope)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the contentionscope attribute in *ATTR to
+   CONTENTIONSCOPE.  */
+extern int pthread_attr_setscope (pthread_attr_t *__attr,
+				  int __contentionscope)
+	__THROW __nonnull ((1));
+
+
+/* Return the value of the stackaddr attribute in *ATTR in
+   *STACKADDR.  */
+extern int pthread_attr_getstackaddr (const pthread_attr_t *__restrict __attr,
+				      void **__restrict __stackaddr)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the stackaddr attribute in *ATTR to STACKADDR.  */
+extern int pthread_attr_setstackaddr (pthread_attr_t *__attr,
+				      void *__stackaddr)
+	__THROW __nonnull ((1));
+
+
+#ifdef __USE_XOPEN2K
+/* Return the value of the stackaddr and stacksize attributes in *ATTR
+   in *STACKADDR and *STACKSIZE respectively.  */
+extern int pthread_attr_getstack (const pthread_attr_t *__restrict __attr,
+				  void **__restrict __stackaddr,
+				  size_t *__restrict __stacksize)
+	__THROW __nonnull ((1, 2, 3));
+
+/* Set the value of the stackaddr and stacksize attributes in *ATTR to
+   STACKADDR and STACKSIZE respectively.  */
+extern int pthread_attr_setstack (pthread_attr_t *__attr,
+				  void *__stackaddr,
+				  size_t __stacksize)
+	__THROW __nonnull ((1));
+#endif
+
+
+/* Return the value of the detachstate attribute in *ATTR in
+   *DETACHSTATE.  */
+extern int pthread_attr_getdetachstate (const pthread_attr_t *__attr,
+					int *__detachstate)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the detachstate attribute in *ATTR to
+   DETACHSTATE.  */
+extern int pthread_attr_setdetachstate (pthread_attr_t *__attr,
+					int __detachstate)
+	__THROW __nonnull ((1));
+
+
+/* Return the value of the guardsize attribute in *ATTR in
+   *GUARDSIZE.  */
+extern int pthread_attr_getguardsize (const pthread_attr_t *__restrict __attr,
+				      size_t *__restrict __guardsize)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the guardsize attribute in *ATTR to GUARDSIZE.  */
+extern int pthread_attr_setguardsize (pthread_attr_t *__attr,
+				      size_t __guardsize)
+	__THROW __nonnull ((1));
+
+
+/* Return the value of the stacksize attribute in *ATTR in
+   *STACKSIZE.  */
+extern int pthread_attr_getstacksize (const pthread_attr_t *__restrict __attr,
+				      size_t *__restrict __stacksize)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the stacksize attribute in *ATTR to STACKSIZE.  */
+extern int pthread_attr_setstacksize (pthread_attr_t *__attr,
+				      size_t __stacksize)
+	__THROW __nonnull ((1));
+
+#ifdef __USE_GNU
+/* Initialize thread attribute *ATTR with attributes corresponding to the
+   already running thread THREAD.  It shall be called on an uninitialized ATTR
+   and destroyed with pthread_attr_destroy when no longer needed.  */
+extern int pthread_getattr_np (pthread_t __thr, pthread_attr_t *__attr)
+	__THROW __nonnull ((2));
+#endif
+
+
+/* Create a thread with attributes given by ATTR, executing
+   START_ROUTINE with argument ARG.  */
+extern int pthread_create (pthread_t *__restrict __threadp,
+			   __const pthread_attr_t *__restrict __attr,
+			   void *(*__start_routine)(void *),
+			   void *__restrict __arg) __THROWNL __nonnull ((1, 3));
+
+/* Terminate the current thread and make STATUS available to any
+   thread that might join us.  */
+extern void pthread_exit (void *__status) __attribute__ ((__noreturn__));
+
+/* Make calling thread wait for termination of thread THREAD.  Return
+   the exit status of the thread in *STATUS.  */
+extern int pthread_join (pthread_t __threadp, void **__status);
+
+/* Indicate that the storage for THREAD can be reclaimed when it
+   terminates.  */
+extern int pthread_detach (pthread_t __threadp);
+
+/* Compare thread IDs T1 and T2.  Return nonzero if they are equal, 0
+   if they are not.  */
+extern int pthread_equal (pthread_t __t1, pthread_t __t2);
+
+#ifdef __USE_EXTERN_INLINES
+
+__extern_inline int
+pthread_equal (pthread_t __t1, pthread_t __t2)
+{
+  return __pthread_equal (__t1, __t2);
+}
+
+#endif /* Use extern inlines.  */
+
+
+/* Return the thread ID of the calling thread.  */
+extern pthread_t pthread_self (void) __THROW;
+
+
+/* Mutex attributes.  */
+
+#define PTHREAD_PRIO_NONE_NP __PTHREAD_PRIO_NONE
+#define PTHREAD_PRIO_INHERIT_NP __PTHREAD_PRIO_INHERIT
+#define PTHREAD_PRIO_PROTECT_NP __PTHREAD_PRIO_PROTECT
+#ifdef __USE_UNIX98
+# define PTHREAD_PRIO_NONE PTHREAD_PRIO_NONE_NP
+# define PTHREAD_PRIO_INHERIT PTHREAD_PRIO_INHERIT_NP
+# define PTHREAD_PRIO_PROTECT PTHREAD_PRIO_PROTECT_NP
+#endif
+
+#define PTHREAD_MUTEX_TIMED_NP __PTHREAD_MUTEX_TIMED
+#define PTHREAD_MUTEX_ERRORCHECK_NP __PTHREAD_MUTEX_ERRORCHECK
+#define PTHREAD_MUTEX_RECURSIVE_NP __PTHREAD_MUTEX_RECURSIVE
+#if defined __USE_UNIX98 || defined __USE_XOPEN2K8
+# define PTHREAD_MUTEX_NORMAL PTHREAD_MUTEX_TIMED_NP
+# define PTHREAD_MUTEX_ERRORCHECK PTHREAD_MUTEX_ERRORCHECK_NP
+# define PTHREAD_MUTEX_RECURSIVE PTHREAD_MUTEX_RECURSIVE_NP
+# define PTHREAD_MUTEX_DEFAULT PTHREAD_MUTEX_NORMAL
+#endif
+#ifdef __USE_GNU
+/* For compatibility.  */
+# define PTHREAD_MUTEX_FAST_NP PTHREAD_MUTEX_TIMED_NP
+#endif
+
+#ifdef __USE_XOPEN2K
+# define PTHREAD_MUTEX_STALLED __PTHREAD_MUTEX_STALLED
+# define PTHREAD_MUTEX_ROBUST __PTHREAD_MUTEX_ROBUST
+#endif
+
+#include <bits/types/struct___pthread_mutexattr.h>
+
+/* Initialize the mutex attribute object in *ATTR to the default
+   values.  */
+extern int pthread_mutexattr_init(pthread_mutexattr_t *__attr)
+	__THROW __nonnull ((1));
+
+/* Destroy the mutex attribute structure in *ATTR.  */
+extern int pthread_mutexattr_destroy(pthread_mutexattr_t *__attr)
+	__THROW __nonnull ((1));
+
+
+#ifdef __USE_UNIX98
+/* Return the value of the prioceiling attribute in *ATTR in
+   *PRIOCEILING.  */
+extern int pthread_mutexattr_getprioceiling(const pthread_mutexattr_t *__restrict __attr,
+					    int *__restrict __prioceiling)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the prioceiling attribute in *ATTR to
+   PRIOCEILING.  */
+extern int pthread_mutexattr_setprioceiling(pthread_mutexattr_t *__attr,
+					    int __prioceiling)
+	__THROW __nonnull ((1));
+
+
+/* Return the value of the protocol attribute in *ATTR in
+   *PROTOCOL.  */
+extern int pthread_mutexattr_getprotocol(const pthread_mutexattr_t *__restrict __attr,
+					 int *__restrict __protocol)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the protocol attribute in *ATTR to PROTOCOL.  */
+extern int pthread_mutexattr_setprotocol(pthread_mutexattr_t *__attr,
+					 int __protocol)
+	__THROW __nonnull ((1));
+#endif
+
+#ifdef __USE_XOPEN2K
+/* Get the robustness flag of the mutex attribute ATTR.  */
+extern int pthread_mutexattr_getrobust (const pthread_mutexattr_t *__attr,
+					int *__robustness)
+     __THROW __nonnull ((1, 2));
+# ifdef __USE_GNU
+extern int pthread_mutexattr_getrobust_np (const pthread_mutexattr_t *__attr,
+					   int *__robustness)
+     __THROW __nonnull ((1, 2));
+# endif
+
+/* Set the robustness flag of the mutex attribute ATTR.  */
+extern int pthread_mutexattr_setrobust (pthread_mutexattr_t *__attr,
+					int __robustness)
+     __THROW __nonnull ((1));
+# ifdef __USE_GNU
+extern int pthread_mutexattr_setrobust_np (pthread_mutexattr_t *__attr,
+					   int __robustness)
+     __THROW __nonnull ((1));
+# endif
+#endif
+
+
+/* Return the value of the process shared attribute in *ATTR in
+   *PSHARED.  */
+extern int pthread_mutexattr_getpshared(const pthread_mutexattr_t *__restrict __attr,
+					int *__restrict __pshared)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the process shared attribute in *ATTR to
+   PSHARED.  */
+extern int pthread_mutexattr_setpshared(pthread_mutexattr_t *__attr,
+					int __pshared)
+	__THROW __nonnull ((1));
+
+
+#if defined __USE_UNIX98 || defined __USE_XOPEN2K8
+/* Return the value of the type attribute in *ATTR in *TYPE.  */
+extern int pthread_mutexattr_gettype(const pthread_mutexattr_t *__restrict __attr,
+				     int *__restrict __type)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the type attribute in *ATTR to TYPE.  */
+extern int pthread_mutexattr_settype(pthread_mutexattr_t *__attr,
+				     int __type)
+	__THROW __nonnull ((1));
+#endif
+
+
+/* Mutexes.  */
+
+#include <bits/types/struct___pthread_mutex.h>
+
+#define PTHREAD_MUTEX_INITIALIZER __PTHREAD_MUTEX_INITIALIZER
+/* Static initializer for recursive mutexes.  */
+
+#ifdef __USE_GNU
+# define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP \
+  __PTHREAD_ERRORCHECK_MUTEX_INITIALIZER
+# define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP \
+  __PTHREAD_RECURSIVE_MUTEX_INITIALIZER
+#endif
+
+/* Create a mutex with attributes given by ATTR and store it in
+   *__MUTEX.  */
+extern int pthread_mutex_init (struct __pthread_mutex *__restrict __mutex,
+			       const pthread_mutexattr_t *__restrict __attr)
+	__THROW __nonnull ((1));
+
+/* Destroy the mutex __MUTEX.  */
+extern int pthread_mutex_destroy (struct __pthread_mutex *__mutex)
+	__THROW __nonnull ((1));
+
+/* Wait until lock for MUTEX becomes available and lock it.  */
+extern int pthread_mutex_lock (pthread_mutex_t *__mutex);
+
+/* Try to lock MUTEX.  */
+extern int pthread_mutex_trylock (pthread_mutex_t *__mutex)
+	__THROWNL __nonnull ((1));
+
+#ifdef __USE_XOPEN2K
+/* Try to lock MUTEX, block until *ABSTIME if it is already held.  */
+extern int pthread_mutex_timedlock (struct __pthread_mutex *__restrict __mutex,
+				    const struct timespec *__restrict __abstime)
+	__THROWNL __nonnull ((1, 2));
+#endif
+
+/* Unlock MUTEX.  */
+extern int pthread_mutex_unlock (pthread_mutex_t *__mutex)
+	__THROWNL __nonnull ((1));
+
+/* Transfer ownership of the mutex MUTEX to the thread TID.  The
+   caller must own the lock.  */
+extern int __pthread_mutex_transfer_np (struct __pthread_mutex *__mutex,
+					pthread_t __tid)
+	__THROWNL __nonnull ((1));
+
+
+#ifdef __USE_UNIX98
+/* Return the priority ceiling of mutex *MUTEX in *PRIOCEILING.  */
+extern int pthread_mutex_getprioceiling (const pthread_mutex_t *__restrict __mutex,
+					 int *__restrict __prioceiling)
+	__THROW __nonnull ((1, 2));
+
+/* After acquiring the mutex *MUTEX, set its priority ceiling to PRIO
+   and return the old priority ceiling in *OLDPRIO.  Before returning,
+   release the mutex.  */
+extern int pthread_mutex_setprioceiling (pthread_mutex_t *__restrict __mutex,
+					 int __prio, int *__restrict __oldprio)
+	__THROW __nonnull ((1, 3));
+#endif
+
+#ifdef __USE_XOPEN2K8
+
+/* Declare the state protected by robust mutex MTXP as consistent. */
+extern int pthread_mutex_consistent (pthread_mutex_t *__mtxp)
+  __THROW __nonnull ((1));
+
+#  ifdef __USE_GNU
+extern int pthread_mutex_consistent_np (pthread_mutex_t *__mtxp)
+  __THROW __nonnull ((1));
+#  endif
+#endif
+
+
+
+/* Condition attributes.  */
+
+#include <bits/types/struct___pthread_condattr.h>
+
+/* Initialize the condition attribute in *ATTR to the default
+   values.  */
+extern int pthread_condattr_init (pthread_condattr_t *__attr)
+	__THROW __nonnull ((1));
+
+/* Destroy the condition attribute structure in *ATTR.  */
+extern int pthread_condattr_destroy (pthread_condattr_t *__attr)
+	__THROW __nonnull ((1));
+
+
+#ifdef __USE_XOPEN2K
+/* Return the value of the clock attribute in *ATTR in *CLOCK_ID.  */
+extern int pthread_condattr_getclock (const pthread_condattr_t *__restrict __attr,
+				      __clockid_t *__restrict __clock_id)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the clock attribute in *ATTR to CLOCK_ID.  */
+extern int pthread_condattr_setclock (pthread_condattr_t *__attr,
+				      __clockid_t __clock_id)
+	__THROW __nonnull ((1));
+#endif
+
+
+/* Return the value of the process shared attribute in *ATTR in
+   *PSHARED.  */
+extern int pthread_condattr_getpshared (const pthread_condattr_t *__restrict __attr,
+					int *__restrict __pshared)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the process shared attribute in *ATTR to
+   PSHARED.  */
+extern int pthread_condattr_setpshared (pthread_condattr_t *__attr,
+					int __pshared)
+	__THROW __nonnull ((1));
+
+
+/* Condition variables.  */
+
+#include <bits/types/struct___pthread_cond.h>
+
+#define PTHREAD_COND_INITIALIZER __PTHREAD_COND_INITIALIZER
+
+extern int pthread_cond_init (pthread_cond_t *__restrict __cond,
+			      const pthread_condattr_t *__restrict __attr)
+	__THROW __nonnull ((1));
+
+extern int pthread_cond_destroy (pthread_cond_t *__cond)
+	__THROW __nonnull ((1));
+
+/* Unblock at least one of the threads that are blocked on condition
+   variable COND.  */
+extern int pthread_cond_signal (pthread_cond_t *__cond)
+	__THROWNL __nonnull ((1));
+
+/* Unblock all threads that are blocked on condition variable COND.  */
+extern int pthread_cond_broadcast (pthread_cond_t *__cond)
+	__THROWNL __nonnull ((1));
+
+/* Block on condition variable COND.  MUTEX should be held by the
+   calling thread.  On success, MUTEX will be held by the calling
+   thread.  */
+extern int pthread_cond_wait (pthread_cond_t *__restrict __cond,
+			      pthread_mutex_t *__restrict __mutex)
+	 __nonnull ((1, 2));
+
+/* Block on condition variable COND.  MUTEX should be held by the
+   calling thread. On success, MUTEX will be held by the calling
+   thread.  If the time specified by ABSTIME passes, ETIMEDOUT is
+   returned, and MUTEX will nevertheless be held.  */
+extern int pthread_cond_timedwait (pthread_cond_t *__restrict __cond,
+				   pthread_mutex_t *__restrict __mutex,
+				   __const struct timespec *__restrict __abstime)
+	 __nonnull ((1, 2, 3));
+
+
+/* Spin locks.  */
+
+#ifdef __USE_XOPEN2K
+
+# include <bits/types/__pthread_spinlock_t.h>
+
+# define PTHREAD_SPINLOCK_INITIALIZER __PTHREAD_SPIN_LOCK_INITIALIZER
+
+/* Destroy the spin lock object LOCK.  */
+extern int pthread_spin_destroy (pthread_spinlock_t *__lock)
+	__nonnull ((1));
+
+/* Initialize the spin lock object LOCK.  PSHARED determines whether
+   the spin lock can be operated upon by multiple processes.  */
+extern int pthread_spin_init (pthread_spinlock_t *__lock, int __pshared)
+	__nonnull ((1));
+
+/* Lock the spin lock object LOCK.  If the lock is held by another
+   thread spin until it becomes available.  */
+extern int pthread_spin_lock (pthread_spinlock_t *__lock)
+	__nonnull ((1));
+
+/* Lock the spin lock object LOCK.  Fail if the lock is held by
+   another thread.  */
+extern int pthread_spin_trylock (pthread_spinlock_t *__lock)
+	__nonnull ((1));
+
+/* Unlock the spin lock object LOCK.  */
+extern int pthread_spin_unlock (pthread_spinlock_t *__lock)
+	__nonnull ((1));
+
+# if defined __USE_EXTERN_INLINES && defined _LIBC
+
+# include <bits/spin-lock-inline.h>
+
+__extern_inline int
+pthread_spin_destroy (pthread_spinlock_t *__lock)
+{
+  return __pthread_spin_destroy (__lock);
+}
+
+__extern_inline int
+pthread_spin_init (pthread_spinlock_t *__lock, int __pshared)
+{
+  return __pthread_spin_init (__lock, __pshared);
+}
+
+__extern_inline int
+pthread_spin_lock (pthread_spinlock_t *__lock)
+{
+  return __pthread_spin_lock (__lock);
+}
+
+__extern_inline int
+pthread_spin_trylock (pthread_spinlock_t *__lock)
+{
+  return __pthread_spin_trylock (__lock);
+}
+
+__extern_inline int
+pthread_spin_unlock (pthread_spinlock_t *__lock)
+{
+  return __pthread_spin_unlock (__lock);
+}
+
+# endif /* Use extern inlines.  */
+
+#endif /* XPG6.  */
+
+
+/* rwlock attributes.  */
+
+#if defined __USE_UNIX98 || defined __USE_XOPEN2K
+
+# include <bits/types/struct___pthread_rwlockattr.h>
+
+/* Initialize rwlock attribute object in *ATTR to the default
+   values.  */
+extern int pthread_rwlockattr_init (pthread_rwlockattr_t *__attr)
+	__THROW __nonnull ((1));
+
+/* Destroy the rwlock attribute object in *ATTR.  */
+extern int pthread_rwlockattr_destroy (pthread_rwlockattr_t *__attr)
+	__THROW __nonnull ((1));
+
+
+/* Return the value of the process shared attribute in *ATTR in
+   *PSHARED.  */
+extern int pthread_rwlockattr_getpshared (const pthread_rwlockattr_t *__restrict __attr,
+					  int *__restrict __pshared)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the process shared atrribute in *ATTR to
+   PSHARED.  */
+extern int pthread_rwlockattr_setpshared (pthread_rwlockattr_t *__attr,
+					  int __pshared)
+	__THROW __nonnull ((1));
+
+/* Return current setting of reader/writer preference.  */
+extern int pthread_rwlockattr_getkind_np (const pthread_rwlockattr_t *
+					  __restrict __attr,
+					  int *__restrict __pref)
+     __THROW __nonnull ((1, 2));
+
+/* Set reader/write preference.  */
+extern int pthread_rwlockattr_setkind_np (pthread_rwlockattr_t *__attr,
+					  int __pref) __THROW __nonnull ((1));
+
+
+/* rwlocks.  */
+
+# include <bits/types/struct___pthread_rwlock.h>
+
+# define PTHREAD_RWLOCK_INITIALIZER __PTHREAD_RWLOCK_INITIALIZER
+/* Create a rwlock object with attributes given by ATTR and strore the
+   result in *RWLOCK.  */
+extern int pthread_rwlock_init (pthread_rwlock_t *__restrict __rwlock,
+				const pthread_rwlockattr_t *__restrict __attr)
+	__THROW __nonnull ((1));
+
+/* Destroy the rwlock *RWLOCK.  */
+extern int pthread_rwlock_destroy (pthread_rwlock_t *__rwlock)
+	__THROW __nonnull ((1));
+
+/* Acquire the rwlock *RWLOCK for reading.  */
+extern int pthread_rwlock_rdlock (pthread_rwlock_t *__rwlock)
+	__THROWNL __nonnull ((1));
+
+/* Acquire the rwlock *RWLOCK for reading.  */
+extern int pthread_rwlock_tryrdlock (pthread_rwlock_t *__rwlock)
+	__THROWNL __nonnull ((1));
+
+# ifdef __USE_XOPEN2K
+/* Acquire the rwlock *RWLOCK for reading blocking until *ABSTIME if
+   it is already held.  */
+extern int pthread_rwlock_timedrdlock (struct __pthread_rwlock *__restrict __rwlock,
+				       const struct timespec *__restrict __abstime)
+	__THROWNL __nonnull ((1, 2));
+# endif
+
+/* Acquire the rwlock *RWLOCK for writing.  */
+extern int pthread_rwlock_wrlock (pthread_rwlock_t *__rwlock)
+	__THROWNL __nonnull ((1));
+
+/* Try to acquire the rwlock *RWLOCK for writing.  */
+extern int pthread_rwlock_trywrlock (pthread_rwlock_t *__rwlock)
+	__THROWNL __nonnull ((1));
+
+# ifdef __USE_XOPEN2K
+/* Acquire the rwlock *RWLOCK for writing blocking until *ABSTIME if
+   it is already held.  */
+extern int pthread_rwlock_timedwrlock (struct __pthread_rwlock *__restrict __rwlock,
+				       const struct timespec *__restrict __abstime)
+	__THROWNL __nonnull ((1, 2));
+# endif
+
+/* Release the lock held by the current thread on *RWLOCK.  */
+extern int pthread_rwlock_unlock (pthread_rwlock_t *__rwlock)
+	__THROWNL __nonnull ((1));
+
+#endif /* __USE_UNIX98 || __USE_XOPEN2K */
+
+
+
+/* Cancelation.  */
+
+/* Register a cleanup handler.  */
+extern void pthread_cleanup_push (void (*__routine) (void *), void *__arg);
+
+/* Unregister a cleanup handler.  */
+extern void pthread_cleanup_pop (int __execute);
+
+#include <bits/cancelation.h>
+
+#define pthread_cleanup_push(rt, rtarg) __pthread_cleanup_push(rt, rtarg)
+#define pthread_cleanup_pop(execute) __pthread_cleanup_pop(execute)
+
+#define PTHREAD_CANCEL_DISABLE 0
+#define PTHREAD_CANCEL_ENABLE 1
+
+/* Return the calling thread's cancelation state in *OLDSTATE and set
+   its state to STATE.  */
+extern int pthread_setcancelstate (int __state, int *__oldstate);
+
+#define PTHREAD_CANCEL_DEFERRED 0
+#define PTHREAD_CANCEL_ASYNCHRONOUS 1
+
+/* Return the calling thread's cancelation type in *OLDTYPE and set
+   its type to TYPE.  */
+extern int pthread_setcanceltype (int __type, int *__oldtype);
+
+/* Value returned by pthread_join if the target thread was
+   canceled.  */
+#define PTHREAD_CANCELED ((void *) -1)
+
+/* Cancel THEAD.  */
+extern int pthread_cancel (pthread_t __thr);
+
+/* Add an explicit cancelation point.  */
+extern void pthread_testcancel (void);
+
+
+/* Barriers attributes.  */
+
+#ifdef __USE_XOPEN2K
+
+# include <bits/types/struct___pthread_barrierattr.h>
+
+/* Initialize barrier attribute object in *ATTR to the default
+   values.  */
+extern int pthread_barrierattr_init (pthread_barrierattr_t *__attr)
+	__THROW __nonnull ((1));
+
+/* Destroy the barrier attribute object in *ATTR.  */
+extern int pthread_barrierattr_destroy (pthread_barrierattr_t *__attr)
+	__THROW __nonnull ((1));
+
+
+/* Return the value of the process shared attribute in *ATTR in
+   *PSHARED.  */
+extern int pthread_barrierattr_getpshared (const pthread_barrierattr_t *__restrict __attr,
+					   int *__restrict __pshared)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the process shared atrribute in *ATTR to
+   PSHARED.  */
+extern int pthread_barrierattr_setpshared (pthread_barrierattr_t *__attr,
+					   int __pshared)
+	__THROW __nonnull ((1));
+
+
+/* Barriers.  */
+
+# include <bits/types/struct___pthread_barrier.h>
+
+/* Returned by pthread_barrier_wait to exactly one thread each time a
+   barrier is passed.  */
+# define PTHREAD_BARRIER_SERIAL_THREAD -1
+
+/* Initialize barrier BARRIER.  */
+extern int pthread_barrier_init (pthread_barrier_t *__restrict __barrier,
+				const pthread_barrierattr_t *__restrict __attr,
+				unsigned __count)
+	__THROW __nonnull ((1));
+
+/* Destroy barrier BARRIER.  */
+extern int pthread_barrier_destroy (pthread_barrier_t *__barrier)
+	__THROW __nonnull ((1));
+
+/* Wait on barrier BARRIER.  */
+extern int pthread_barrier_wait (pthread_barrier_t *__barrier)
+	__THROWNL __nonnull ((1));
+
+#endif /* __USE_XOPEN2K */
+
+
+
+/* Thread specific data.  */
+
+#include <bits/types/__pthread_key.h>
+
+/* Create a thread specific data key in KEY visible to all threads.
+   On thread destruction, DESTRUCTOR shall be called with the thread
+   specific data associate with KEY if it is not NULL.  */
+extern int pthread_key_create (pthread_key_t *__key,
+			       void (*__destructor) (void *))
+	__THROW __nonnull ((1));
+
+/* Delete the thread specific data key KEY.  The associated destructor
+   function is not called.  */
+extern int pthread_key_delete (pthread_key_t __key) __THROW;
+
+/* Return the caller thread's thread specific value of KEY.  */
+extern void *pthread_getspecific (pthread_key_t __key) __THROW;
+
+/* Set the caller thread's thread specific value of KEY to VALUE.  */
+extern int pthread_setspecific (pthread_key_t __key, const void *__value)
+	__THROW;
+
+
+/* Dynamic package initialization.  */
+
+#include <bits/types/struct___pthread_once.h>
+
+#define PTHREAD_ONCE_INIT __PTHREAD_ONCE_INIT
+
+/* Call INIT_ROUTINE if this function has never been called with
+   *ONCE_CONTROL, otherwise do nothing.  */
+extern int pthread_once (pthread_once_t *__once_control,
+			 void (*__init_routine) (void)) __nonnull ((1, 2));
+
+
+/* Concurrency.  */
+
+#ifdef __USE_UNIX98
+/* Set the desired concurrency level to NEW_LEVEL.  */
+extern int pthread_setconcurrency (int __new_level) __THROW;
+
+/* Get the current concurrency level.  */
+extern int pthread_getconcurrency (void) __THROW;
+#endif
+
+
+/* Forking.  */
+
+/* Register the function PREPARE to be run before the process forks,
+   the function PARENT to be run after a fork in the parent and the
+   function CHILD to be run in the child after the fork.  If no
+   handling is desired then any of PREPARE, PARENT and CHILD may be
+   NULL.  The prepare handles will be called in the reverse order
+   which they were registered and the parent and child handlers in the
+   order in which they were registered.  */
+extern int pthread_atfork (void (*__prepare) (void), void (*__parent) (void),
+			   void (*__child) (void)) __THROW;
+
+
+/* Signals (should be in <signal.h>).  */
+
+/* Send signal SIGNO to thread THREAD.  */
+extern int pthread_kill (pthread_t __thr, int __signo) __THROW;
+
+
+/* Time.  */
+
+#ifdef __USE_XOPEN2K
+/* Return the thread cpu clock.  */
+extern int pthread_getcpuclockid (pthread_t __thr, __clockid_t *__clock)
+	__THROW __nonnull ((2));
+#endif
+
+
+/* Scheduling.  */
+
+/* Return thread THREAD's scheduling paramters.  */
+extern int pthread_getschedparam (pthread_t __thr, int *__restrict __policy,
+				  struct sched_param *__restrict __param)
+	__THROW __nonnull ((2, 3));
+
+/* Set thread THREAD's scheduling paramters.  */
+extern int pthread_setschedparam (pthread_t __thr, int __policy,
+				  const struct sched_param *__param)
+	__THROW __nonnull ((3));
+
+/* Set thread THREAD's scheduling priority.  */
+extern int pthread_setschedprio (pthread_t __thr, int __prio) __THROW;
+
+#ifdef __USE_GNU
+/* 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
+   implementation.  */
+extern int pthread_yield (void) __THROW;
+#endif
+
+
+/* Kernel-specific interfaces.  */
+
+#include <bits/pthread-np.h>
+
+
+__END_DECLS
+
+#endif /* pthread.h */