LinuxThreads library.

1998-03-11 00:42  Wolfram Gloger  <wmglo@dent.med.uni-muenchen.de>
	* linuxthreads/manager.c: Enable resetting of the thread
	scheduling policy to SCHED_OTHER when the parent thread
	has a different one.
1998-02-01 13:51  Ulrich Drepper  <drepper@cygnus.com>
	* sysdeps/unix/sysv/linux/bits/posix_opt.h: Define
	_POSIX_ASYNCHRONOUS_IO.
	* sysdeps/pthread/pthread.h: Define bits for Unix98 variants of
	mutexes.
	* mutex.c: Implement new mutex types.
	* internals.h: Include <signal.h>.
	* libpthread.map: Add __erno_location and __h_errno_location.
	* errno.c: Return pointer to variable actually in use.  This might
	not be the one in the thread structure.
	* internals.h (struct _pthread_descr_struct): Add new fields p_errnop
	and p_h_errnop.
	* manager.c (__pthread_manager): Set p_errnop and p_h_errnop member
	of manager thread structure.
	(pthread_handle_create): Set p_errnop and p_h_errnop members for new
	thread.
	* pthread.c: Adapt initializer for thread structures.
	(__pthread_initial_thread): Set p_errnop and p_h_errnop member.
	(__pthread_reset_main_thread): Reset p_errnop and p_h_errnop of
	current thread to global variables.
1998-01-31 17:27  Ulrich Drepper  <drepper@cygnus.com>
	* rwlock.c: New file.
	* Makefile (libpthread-routines): Add rwlock.
	* sysdeps/pthread/pthread.h: Define data structures and declare
	functions.
	* libpthread.map: Add new functions.
1997-12-18 13:50  Philip Blundell  <pb@nexus.co.uk>
	* sysdeps/arm/pt-machine.h: New file; add ARM support.
	* sysdeps/arm/Implies: likewise.
	* README: Document it.
1997-12-13  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>
	* signals.c: Remove unneeded initializer for sigwaited, saving a
1997-04-11 01:18  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>
	* semaphore.c (sem_init): Set sem_spinlock only if available.
1997-12-04 01:48  Ulrich Drepper  <drepper@cygnus.com>
	* mutex.c: Implement PTHREAD_MUTEX_CHECKERROR.
	* sysdeps/pthread/pthread.h: Define PTHREAD_MUTEX_CHECKERROR.
	* Makefile: Update from LinuxThreads 0.7.
	* internals.h. Likewise.
	* manager.c: Likewise.
	* mutex.c: Likewise.
	* pthread.c: Likewise.
	* signals.c: Likewise.
	* specific.c: Likewise.
	* Examples/ex3.c: Likewise.
1997-11-20 18:13  Ulrich Drepper  <drepper@cygnus.com>
	* pthread.c (__pthread_reset_main_thread): Close pipe only if still
	open.
1997-10-29 05:38  Ulrich Drepper  <drepper@cygnus.com>

	* wrapsyscall.c: Add socket functions which are also cancelation
	points.

1997-10-19 21:40  Wolfram Gloger  <wg@wolfram.dent.med.uni-muenchen.de>

	* specific.c (__libc_internal_tsd_set, __libc_internal_tsd_get):
	New functions for fast thread specific data within libc.

	* internals.h: Add new array p_libc_specific to struct
	_pthread_descr_struct.

	* sysdeps/pthread/bits/libc-lock.h: Declare new functions.

1997-10-13 05:39  Ulrich Drepper  <drepper@cygnus.com>

	* semaphore.h: Add __BEGIN_DECLS/__END_DECLS.
	Reported by Ralf Corsepius <corsepiu@faw.uni-ulm.de>.

1997-08-29 03:05  Ulrich Drepper  <drepper@cygnus.com>

	* internals.h (struct _pthread_descr_struct): Add definitions for
	two-level specific key handling.
	* manager.c (pthread_handle_create): Initialize specific memory array.
	* specific.c: Implement two-level key handling.
	* weaks.c: Don't provide dummy key handling.
	* sysdeps/pthread/bits/libc-lock.h: Typedef __libc_lock_t (no #define).
	Add definition of __libc_key_t.
	* sysdeps/unix/sysv/linux/bits/local_lim.h: Define PTHREAD_KEYS_MAX
	as 1024.
	Add definition of _POSIX_THREAD_DESTRUCTOR_ITERATIONS and
	PTHREAD_DESTRUCTOR_ITERATIONS.

	* manager.c (pthread_handle_create): Compare mmap result with
	MAP_FAILED.

	* ptfork.c: Rename to __pthread_atfork and make old name a weak alias.
	* sysdeps/pthread/bits/pthread.h: Add prototype for __pthread_atfork.

1997-08-22 19:04  Richard Henderson  <rth@cygnus.com>

	sysdeps/sparc -> sysdeps/sparc/sparc32
	sysdeps/sparc64 -> sysdeps/sparc/sparc64

	* internals.h: Change definition of THREAD_SELF to be an expression,
	not a statement that did a return.
	* sysdeps/alpha/pt-machine.h (THREAD_SELF): Update accordingly.
	* sysdeps/sparc/sparc32/pt-machine.h (THREAD_SELF, INIT_THREAD_SELF):
	Follow Solaris and use a "system reserved" register (%g6) to hold
	the thread descriptor.
	* sysdeps/sparc/sparc64/pt-machine.h: Likewise.

1997-08-03 00:09  Ulrich Drepper  <drepper@cygnus.com>

	* mutex.c: Correct pthread_once.  Patch by Xavier Leroy.
	* sysdeps/pthread/pthread.h: Add prototype for __pthread_once.
	* sysdeps/pthread/bits/pthread.h: Add macros for __libc_once.

	* semaphore.c: Include spinlock.h only when needed.

	* specific.c (__pthread_setsepcific, __pthread_getspecific): Reject
	keys for entries not in use.

	* weaks.c: Implement key handling functions for real.

1997-06-29  01:04  Richard Henderson  <richard@gnu.ai.mit.edu>

	Initial sparc64-linux support:
	* linuxthreads/sysdeps/sparc64/Implies: New file.
	* linuxthreads/sysdeps/sparc64/pt-machine.h: Likewise.

1997-06-29 00:48  Ulrich Drepper  <drepper@cygnus.com>

	* semaphore.c: Include spinlock.h at correct place.
	Patch by HJ Lu.

1997-06-13 10:06  Richard Henderson  <rth@tamu.edu>

	The Great Bit File Move:
	* sysdeps/alpha/semaphorebits.h: -> .../bits/semaphore.h.
	* sysdeps/powerpc/semaphorebits.h: Likewise.
	* sysdeps/pthread/cmpxchg/semaphorebits.h: Likewise.
	* sysdeps/pthread/no-cmpxchg/semaphorebits.h: Likewise.
	* sysdeps/pthread/libc-lock.h: -> bits/
	* sysdeps/pthread/stdio-lock.h: Likewise.
	* sysdeps/unix/sysv/linux/local_lim.h: Likewise.
	* sysdeps/unix/sysv/linux/posix_opt.h: Likewise.
	* semaphore.h: Likewise.
	* sysdeps/pthread/pthread.h: Likewise.

	* lockfile.c: <foo.h> -> <bits/foo.h>.
	* semaphore.h: Likewise.

	* Makefile: (headers): foo.h -> bits/foo.h.
	* sysdeps/pthread/Makefile: Likewise.

1997-04-11 01:18  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* semaphore.c (sem_init): Set sem_spinlock only if available.

	* sysdeps/m68k/pt-machine.h (testandset, __compare_and_swap): Fix
	asm constraints.

1997-04-09 03:00  Ulrich Drepper  <drepper@cygnus.com>

	Update from LinuxThreads 0.6.

	* attr.c (pthread_attr_getdetachstate): Use __sched_get_priority_max
	and __sched_get_priority_min instead of names without `__'.

	* manager.c: Rewrite large parts to implement opaque pthread_t.

	* cancel.c: Adapt for opaque pthread_t type.
	* condvar.c: Likewise.
	* errno.c: Likewise.
	* join.c: Likewise.
	* mutex.c: Likewise.
	* pthread.c: Likewise.
	* signals.c: Likewise.
	* specific.c: Likewise.
	* restart.h: Likewise.
	* queue.h: Likewise.
	* Examples/ex3.c: Likewise.
	* Examples/ex4.c: Likewise.
	* sysdeps/pthread/pthread.h: Likewise.

	* pthread.c: Accumulate time for all threads in thread manager.

	* semaphore.c: Implement fallback implementation for architectures
	sometimes missing compare-exchange operations.

	* cancel.c (pthread_cancel): Validate handle argument.
	* join.c (pthread_join): Likewise.
	(pthread_detach): Likewise.
	* signals.c (pthread_kill): Likewise.

	* spinlock.h (acquire): Use __sched_yield not sched_yield.

	* queue.h (enqueue): Enqueue thread according to priority.

	* internals.c (struct pthread_start_args): New struct for passing
	args to cloning function.
	(struct _pthread): Rename to _pthread_descr_struct and adapt for
	opaque pthread_t.

	* Examples/Makefile (clean): Pass -f option to rm.

	* sysdeps/i386/pt-machine.h: Add check for compare-exchange instruction
	and define TEST_FOR_COMPARE_AND_SWAP.
	* sysdeps/i386/i486/pt-machine.h: Removed.

	* sysdeps/unix/sysv/linux/local_lim.h (PTHREAD_THREADS_MAX): Increase
	to 1024.

1997-04-04 16:38  Ulrich Drepper  <drepper@cygnus.com>

	* restart.h (suspend): Clear p_signal before suspending.
	(suspend_with_cancellation): Likewise.
	Patch by Xavier Leroy <Xavier.Leroy@inria.fr>.

	* weaks.c: Make __pthread_key_create return 1.
	* sysdeps/pthread/libc-lock.h: Define __libc_key_create,
	__libc_getspecific, __libc_setspecific, and __libc_key_t.
	* sysdeps/pthread/stdio-lock.h: Don't care for implementation not
	using libio.

1997-03-19 15:13  Miguel de Icaza  <miguel@nuclecu.unam.mx>

	* sysdeps/sparc/pt-machine (RELEASE): Fix.

1997-03-01 07:55  Geoff Keating  <geoffk@ozemail.com.au>

	* sysdeps/powerpc/Implies: Added.
	* sysdeps/powerpc/pt-machine.h: Added.
	* sysdeps/powerpc/semaphorebits.h: Added.

1997-01-22 01:22  Ulrich Drepper  <drepper@cygnus.com>

	* linuxtheads/pthread.c (__pthread_initial_thread): Correct
	initializer.
	(__pthread_manager_thread): Likewise.
	Reported by Andreas Jaeger.

1997-01-18 22:15  Richard Henderson  <rth@tamu.edu>

	Since sigset_t no longer fits in a register, we can't pass in the
	thread's initial mask so easily.  Take this opportunity to simplify
	the clone implementation by only accepting a single void* argument.

	* linuxthreads/manager.c (__pthread_manager): Put thread vitals
	in the thread struct instead of as arguments through clone.
	(pthread_start_thread): Look for them there.
	* linuxthreads/internals.h (struct _pthread): Add p_initial_fn,
	p_initial_fn_arg, p_initial_mask.  Fix __pthread_manager proto.
	* linuxthreads/pthread.c (pthread_initialize_manager): Revise
	clone invocation.

6 files changed, 877 insertions, 0 deletions

diff --git a/linuxthreads/sysdeps/pthread/Makefile b/linuxthreads/sysdeps/pthread/Makefile
new file mode 100644
index 0000000000..419650c6a6
--- /dev/null
+++ b/linuxthreads/sysdeps/pthread/Makefile
@@ -0,0 +1,3 @@
+ifeq ($(subdir),libio)
+sysdep_headers += bits/stdio-lock.h
+endif
diff --git a/linuxthreads/sysdeps/pthread/bits/libc-lock.h b/linuxthreads/sysdeps/pthread/bits/libc-lock.h
new file mode 100644
index 0000000000..530d48c6da
--- /dev/null
+++ b/linuxthreads/sysdeps/pthread/bits/libc-lock.h
@@ -0,0 +1,208 @@
+/* libc-internal interface for mutex locks.  LinuxThreads version.
+   Copyright (C) 1996, 1997 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,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _BITS_LIBC_LOCK_H
+#define _BITS_LIBC_LOCK_H 1
+
+#include <pthread.h>
+
+/* Mutex type.  */
+#ifdef _LIBC
+typedef pthread_mutex_t __libc_lock_t;
+#else
+typedef struct __libc_lock_opaque__ __libc_lock_t;
+#endif
+
+/* Type for key to thread-specific data.  */
+typedef pthread_key_t __libc_key_t;
+
+/* Define a lock variable NAME with storage class CLASS.  The lock must be
+   initialized with __libc_lock_init before it can be used (or define it
+   with __libc_lock_define_initialized, below).  Use `extern' for CLASS to
+   declare a lock defined in another module.  In public structure
+   definitions you must use a pointer to the lock structure (i.e., NAME
+   begins with a `*'), because its storage size will not be known outside
+   of libc.  */
+#define __libc_lock_define(CLASS,NAME) \
+  CLASS __libc_lock_t NAME;
+
+/* Define an initialized lock variable NAME with storage class CLASS.  */
+#define __libc_lock_define_initialized(CLASS,NAME) \
+  CLASS __libc_lock_t NAME = PTHREAD_MUTEX_INITIALIZER;
+
+/* Define an initialized recursive lock variable NAME with storage
+   class CLASS.  */
+#define __libc_lock_define_initialized_recursive(CLASS,NAME) \
+  CLASS __libc_lock_t NAME = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
+
+/* Initialize the named lock variable, leaving it in a consistent, unlocked
+   state.  */
+#define __libc_lock_init(NAME) \
+  (__pthread_mutex_init != NULL ? __pthread_mutex_init (&(NAME), NULL) : 0);
+
+/* Same as last but this time we initialize a recursive mutex.  */
+#define __libc_lock_init_recursive(NAME) \
+  do {									      \
+    if (__pthread_mutex_init != NULL)					      \
+      {									      \
+	pthread_mutexattr_t __attr;					      \
+	__pthread_mutexattr_init (&__attr);				      \
+	__pthread_mutexattr_setkind_np (&__attr, PTHREAD_MUTEX_RECURSIVE_NP); \
+	__pthread_mutex_init (&(NAME), &__attr);			      \
+	__pthread_mutexattr_destroy (&__attr);				      \
+      }									      \
+  } while (0);
+
+/* Finalize the named lock variable, which must be locked.  It cannot be
+   used again until __libc_lock_init is called again on it.  This must be
+   called on a lock variable before the containing storage is reused.  */
+#define __libc_lock_fini(NAME) \
+  (__pthread_mutex_destroy != NULL ? __pthread_mutex_destroy (&(NAME)) : 0);
+
+/* Finalize recursive named lock.  */
+#define __libc_lock_fini_recursive(NAME) __libc_lock_fini (NAME)
+
+/* Lock the named lock variable.  */
+#define __libc_lock_lock(NAME) \
+  (__pthread_mutex_lock != NULL ? __pthread_mutex_lock (&(NAME)) : 0);
+
+/* Lock the recursive named lock variable.  */
+#define __libc_lock_lock_recursive(NAME) __libc_lock_lock (NAME)
+
+/* Try to lock the named lock variable.  */
+#define __libc_lock_trylock(NAME) \
+  (__pthread_mutex_trylock != NULL ? __pthread_mutex_trylock (&(NAME)) : 0)
+
+/* Try to lock the recursive named lock variable.  */
+#define __libc_lock_trylock_recursive(NAME) __libc_lock_trylock (NAME)
+
+/* Unlock the named lock variable.  */
+#define __libc_lock_unlock(NAME) \
+  (__pthread_mutex_unlock != NULL ? __pthread_mutex_unlock (&(NAME)) : 0);
+
+/* Unlock the recursive named lock variable.  */
+#define __libc_lock_unlock_recursive(NAME) __libc_lock_unlock (NAME)
+
+
+/* Define once control variable.  */
+#define __libc_once_define(CLASS, NAME) \
+  CLASS pthread_once_t NAME = PTHREAD_ONCE_INIT
+
+/* Call handler iff the first call.  */
+#define __libc_once(ONCE_CONTROL, INIT_FUNCTION) \
+  do {									      \
+    if (__pthread_once != NULL)						      \
+      __pthread_once (&(ONCE_CONTROL), (INIT_FUNCTION));		      \
+    else if ((ONCE_CONTROL) == 0) {					      \
+      INIT_FUNCTION ();							      \
+      (ONCE_CONTROL) = 1;						      \
+    }									      \
+  } while (0)
+
+
+/* Start critical region with cleanup.  */
+#define __libc_cleanup_region_start(FCT, ARG) \
+  { struct _pthread_cleanup_buffer _buffer;				      \
+    if (_pthread_cleanup_push_defer != NULL) {				      \
+      _pthread_cleanup_push_defer (&_buffer, (FCT), (ARG));		      \
+    }
+
+/* End critical region with cleanup.  */
+#define __libc_cleanup_region_end(DOIT) \
+    if (_pthread_cleanup_push_defer != NULL) {				      \
+      _pthread_cleanup_pop_restore (&_buffer, (DOIT));			      \
+    }									      \
+  }
+
+/* Create thread-specific key.  */
+#define __libc_key_create(KEY, DESTRUCTOR) \
+  (__pthread_key_create != NULL ? __pthread_key_create (KEY, DESTRUCTOR) : 1)
+
+/* Get thread-specific data.  */
+#define __libc_getspecific(KEY) \
+  (__pthread_getspecific != NULL ? __pthread_getspecific (KEY) : NULL)
+
+/* Set thread-specific data.  */
+#define __libc_setspecific(KEY, VALUE) \
+  (__pthread_setspecific != NULL ? __pthread_setspecific (KEY, VALUE) : 0)
+
+#ifdef _LIBC
+
+/* Fast thread-specific data internal to libc.  */
+enum __libc_tsd_key_t { _LIBC_TSD_KEY_MALLOC = 0, _LIBC_TSD_KEY_N };
+
+extern void *__libc_internal_tsd_get __P ((enum __libc_tsd_key_t));
+extern int __libc_internal_tsd_set __P ((enum __libc_tsd_key_t,
+					 __const void *));
+
+#endif
+
+
+/* Register handlers to execute before and after `fork'.  */
+#define __libc_atfork(PREPARE, PARENT, CHILD) \
+  (__pthread_atfork != NULL ? __pthread_atfork (PREPARE, PARENT, CHILD) : 0)
+
+
+/* Make the pthread functions weak so that we can elide them from
+   single-threaded processes.  */
+#ifdef weak_extern
+weak_extern (__pthread_mutex_init)
+weak_extern (__pthread_mutex_destroy)
+weak_extern (__pthread_mutex_lock)
+weak_extern (__pthread_mutex_trylock)
+weak_extern (__pthread_mutex_unlock)
+weak_extern (__pthread_mutexattr_init)
+weak_extern (__pthread_mutexattr_destroy)
+weak_extern (__pthread_mutexattr_setkind_np)
+weak_extern (__pthread_key_create)
+weak_extern (__pthread_setspecific)
+weak_extern (__pthread_getspecific)
+weak_extern (__libc_internal_tsd_get)
+weak_extern (__libc_internal_tsd_set)
+weak_extern (__pthread_once)
+weak_extern (__pthread_initialize)
+weak_extern (__pthread_atfork)
+weak_extern (_pthread_cleanup_push_defer)
+weak_extern (_pthread_cleanup_pop_restore)
+#else
+# pragma weak __pthread_mutex_init
+# pragma weak __pthread_mutex_destroy
+# pragma weak __pthread_mutex_lock
+# pragma weak __pthread_mutex_trylock
+# pragma weak __pthread_mutex_unlock
+# pragma weak __pthread_mutexattr_init
+# pragma weak __pthread_mutexattr_destroy
+# pragma weak __pthread_mutexattr_setkind_np
+# pragma weak __pthread_key_create
+# pragma weak __pthread_setspecific
+# pragma weak __pthread_getspecific
+# pragma weak __libc_internal_tsd_get
+# pragma weak __libc_internal_tsd_set
+# pragma weak __pthread_once
+# pragma weak __pthread_initialize
+# pragma weak __pthread_atfork
+# pragma weak _pthread_cleanup_push_defer
+# pragma weak _pthread_cleanup_pop_restore
+#endif
+
+/* We need portable names for some functions.  E.g., when they are
+   used as argument to __libc_cleanup_region_start.  */
+#define __libc_mutex_unlock __pthread_mutex_unlock
+
+#endif	/* bits/libc-lock.h */
diff --git a/linuxthreads/sysdeps/pthread/bits/stdio-lock.h b/linuxthreads/sysdeps/pthread/bits/stdio-lock.h
new file mode 100644
index 0000000000..23ebf407f9
--- /dev/null
+++ b/linuxthreads/sysdeps/pthread/bits/stdio-lock.h
@@ -0,0 +1,35 @@
+/* Thread package specific definitions of stream lock type.
+   Copyright (C) 1996, 1997 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,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+
+typedef pthread_mutex_t _IO_lock_t;
+
+/* We need recursive (counting) mutexes.  */
+#define _IO_lock_initializer PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
+
+
+#define _IO_cleanup_region_start(_fct, _fp) \
+     __libc_cleanup_region_start (_fct, _fp)
+#define _IO_cleanup_region_end(_doit) \
+     __libc_cleanup_region_end (_doit)
+#define _IO_lock_init(_name) \
+     __libc_lock_init_recursive (_name)
+#define _IO_lock_fini(_name) \
+     __libc_lock_fini_recursive (_name)
diff --git a/linuxthreads/sysdeps/pthread/cmpxchg/bits/semaphore.h b/linuxthreads/sysdeps/pthread/cmpxchg/bits/semaphore.h
new file mode 100644
index 0000000000..0cdbc05b90
--- /dev/null
+++ b/linuxthreads/sysdeps/pthread/cmpxchg/bits/semaphore.h
@@ -0,0 +1,26 @@
+/* Copyright (C) 1996, 1997 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,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _SEMAPHORE_H
+# error "Never include <bits/semaphore.h> directly; use <semaphore.h> instead."
+#endif
+
+
+typedef struct {
+  long int sem_status;
+} sem_t;
diff --git a/linuxthreads/sysdeps/pthread/no-cmpxchg/bits/semaphore.h b/linuxthreads/sysdeps/pthread/no-cmpxchg/bits/semaphore.h
new file mode 100644
index 0000000000..4d801a26a6
--- /dev/null
+++ b/linuxthreads/sysdeps/pthread/no-cmpxchg/bits/semaphore.h
@@ -0,0 +1,27 @@
+/* Copyright (C) 1996, 1997 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,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _SEMAPHORE_H
+# error "Never include <bits/semaphore.h> directly; use <semaphore.h> instead."
+#endif
+
+
+typedef struct {
+  long int sem_status;
+  int sem_spinlock;
+} sem_t;
diff --git a/linuxthreads/sysdeps/pthread/pthread.h b/linuxthreads/sysdeps/pthread/pthread.h
new file mode 100644
index 0000000000..b62706a811
--- /dev/null
+++ b/linuxthreads/sysdeps/pthread/pthread.h
@@ -0,0 +1,578 @@
+/* Linuxthreads - a simple clone()-based implementation of Posix        */
+/* threads for Linux.                                                   */
+/* Copyright (C) 1996 Xavier Leroy (Xavier.Leroy@inria.fr)              */
+/*                                                                      */
+/* This program 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.               */
+/*                                                                      */
+/* 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 Library General Public License for more details.                 */
+
+#ifndef _PTHREAD_H
+#define _PTHREAD_H	1
+
+#include <features.h>
+
+#include <errno.h>
+#include <limits.h>
+#include <sched.h>
+#include <unistd.h>
+
+#define __need_sigset_t
+#include <signal.h>
+#define __need_timespec
+#include <time.h>
+
+/* Linux has no ENOTSUP error code.  */
+#ifndef ENOTSUP
+#define ENOTSUP EOPNOTSUPP
+#endif
+
+
+__BEGIN_DECLS
+
+/*** Types ***/
+
+/* Thread identifiers */
+typedef unsigned long int pthread_t;
+
+/* Thread descriptors */
+typedef struct _pthread_descr_struct *_pthread_descr;
+
+/* Waiting queues (not abstract because mutexes and conditions aren't).  */
+struct _pthread_queue
+{
+  _pthread_descr head;		/* First element, or NULL if queue empty.  */
+  _pthread_descr tail;		/* Last element, or NULL if queue empty.  */
+};
+
+/* Mutexes (not abstract because of PTHREAD_MUTEX_INITIALIZER).  */
+typedef struct
+{
+  int m_spinlock;		/* Spin lock to guarantee mutual exclusion.  */
+  int m_count;			/* 0 if free, > 0 if taken.  */
+  _pthread_descr m_owner;	/* Owner of mutex (for recursive mutexes) */
+  int m_kind;			/* Kind of mutex */
+  struct _pthread_queue m_waiting; /* Threads waiting on this mutex.  */
+} pthread_mutex_t;
+
+#define PTHREAD_MUTEX_INITIALIZER \
+  {0, 0, 0, PTHREAD_MUTEX_FAST_NP, {0, 0}}
+#define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP \
+  {0, 0, 0, PTHREAD_MUTEX_RECURSIVE_NP, {0, 0}}
+
+/* Conditions (not abstract because of PTHREAD_COND_INITIALIZER */
+typedef struct
+{
+  int c_spinlock;                  /* Spin lock to protect the queue.  */
+  struct _pthread_queue c_waiting; /* Threads waiting on this condition.  */
+} pthread_cond_t;
+
+#define PTHREAD_COND_INITIALIZER {0, {0, 0}}
+
+#ifdef __USE_UNIX98
+/* Read-write locks.  */
+typedef struct
+{
+  int rw_spinlock;              /* Spin lock to guarantee mutual exclusion */
+  int rw_readers;               /* Number of readers */
+  _pthread_descr rw_writer;     /* Identity of writer, or NULL if none */
+  struct _pthread_queue rw_read_waiting; /* Threads waiting for reading */
+  struct _pthread_queue rw_write_waiting; /* Threads waiting for writing */
+  int rw_kind;                  /* Reader/Writer preference selection */
+  int rw_pshared;               /* Shared between processes or not */
+} pthread_rwlock_t;
+
+# define PTHREAD_RWLOCK_INITIALIZER \
+  { 0, 0, 0, {0, 0}, {0, 0},						      \
+    PTHREAD_RWLOCK_DEFAULT_NP, PTHREAD_PROCESS_PRIVATE }
+#endif
+
+/* Attributes */
+
+enum
+{
+  PTHREAD_CREATE_JOINABLE,
+  PTHREAD_CREATE_DETACHED
+};
+
+enum
+{
+  PTHREAD_INHERIT_SCHED,
+  PTHREAD_EXPLICIT_SCHED
+};
+
+enum
+{
+  PTHREAD_SCOPE_SYSTEM,
+  PTHREAD_SCOPE_PROCESS
+};
+
+typedef struct
+{
+  int detachstate;
+  int schedpolicy;
+  struct sched_param schedparam;
+  int inheritsched;
+  int scope;
+} pthread_attr_t;
+
+enum
+{
+  PTHREAD_MUTEX_FAST_NP,
+  PTHREAD_MUTEX_RECURSIVE_NP,
+  PTHREAD_MUTEX_ERRORCHECK_NP
+#ifdef __USE_UNIX98
+  ,
+  PTHREAD_MUTEX_NORMAL = PTHREAD_MUTEX_FAST_NP,
+  PTHREAD_MUTEX_RECURSIVE = PTHREAD_MUTEX_RECURSIVE_NP,
+  PTHREAD_MUTEX_ERRORCHECK = PTHREAD_MUTEX_ERRORCHECK_NP,
+  PTHREAD_MUTEX_DEFAULT = PTHREAD_MUTEX_NORMAL
+#endif
+};
+
+typedef struct
+{
+  int mutexkind;
+} pthread_mutexattr_t;
+
+typedef struct
+{
+  int dummy;
+} pthread_condattr_t;
+
+#ifdef __USE_UNIX98
+enum
+{
+  PTHREAD_PROCESS_PRIVATE,
+  PTHREAD_PROCESS_SHARED
+};
+
+enum
+{
+  PTHREAD_RWLOCK_PREFER_READER_NP,
+  PTHREAD_RWLOCK_PREFER_WRITER_NP,
+  PTHREAD_RWLOCK_DEFAULT_NP = PTHREAD_RWLOCK_PREFER_WRITER_NP
+};
+
+typedef struct
+{
+  int lockkind;
+  int pshared;
+} pthread_rwlockattr_t;
+#endif
+
+/* Keys for thread-specific data */
+
+typedef unsigned int pthread_key_t;
+
+/* Once-only execution */
+
+typedef int pthread_once_t;
+
+#define PTHREAD_ONCE_INIT 0
+
+/* Cleanup buffers */
+
+struct _pthread_cleanup_buffer
+{
+  void (*routine) __P ((void *));	/* Function to call.  */
+  void *arg;				/* Its argument.  */
+  int canceltype;			/* Saved cancellation type. */
+  struct _pthread_cleanup_buffer *prev;	/* Chaining of cleanup functions.  */
+};
+
+/* Cancellation */
+
+enum { PTHREAD_CANCEL_ENABLE, PTHREAD_CANCEL_DISABLE };
+enum { PTHREAD_CANCEL_DEFERRED, PTHREAD_CANCEL_ASYNCHRONOUS };
+#define PTHREAD_CANCELED ((void *) -1)
+
+
+/* Function for handling threads.  */
+
+/* Create a thread with given attributes ATTR (or default attributes
+   if ATTR is NULL), and call function START_ROUTINE with given
+   arguments ARG.  */
+extern int pthread_create __P ((pthread_t *__thread,
+				__const pthread_attr_t *__attr,
+				void *(*__start_routine) (void *),
+				void *__arg));
+
+/* Obtain the identifier of the current thread.  */
+extern pthread_t pthread_self __P ((void));
+
+/* Compare two thread identifiers.  */
+extern int pthread_equal __P ((pthread_t __thread1, pthread_t __thread2));
+
+/* Terminate calling thread.  */
+extern void pthread_exit __P ((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
+   is not NULL.  */
+extern int pthread_join __P ((pthread_t __th, void **__thread_return));
+
+/* 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
+   on it. */
+extern int pthread_detach __P ((pthread_t __th));
+
+
+/* Functions for handling attributes.  */
+
+/* Initialize thread attribute *ATTR with default attributes
+   (detachstate is PTHREAD_JOINABLE, scheduling policy is SCHED_OTHER).  */
+extern int pthread_attr_init __P ((pthread_attr_t *__attr));
+
+/* Destroy thread attribute *ATTR.  */
+extern int pthread_attr_destroy __P ((pthread_attr_t *__attr));
+
+/* Set the `detachstate' attribute in *ATTR according to DETACHSTATE.  */
+extern int pthread_attr_setdetachstate __P ((pthread_attr_t *__attr,
+					     int __detachstate));
+
+/* Return in *DETACHSTATE the `detachstate' attribute in *ATTR.  */
+extern int pthread_attr_getdetachstate __P ((__const pthread_attr_t *__attr,
+					     int *__detachstate));
+
+/* Set scheduling parameters (priority, etc) in *ATTR according to PARAM.  */
+extern int pthread_attr_setschedparam __P ((pthread_attr_t *__attr,
+				        __const struct sched_param *__param));
+
+/* Return in *PARAM the scheduling parameters of *ATTR.  */
+extern int pthread_attr_getschedparam __P ((__const pthread_attr_t *__attr,
+					    struct sched_param *__param));
+
+/* Set scheduling policy in *ATTR according to POLICY.  */
+extern int pthread_attr_setschedpolicy __P ((pthread_attr_t *__attr,
+					     int __policy));
+
+/* Return in *POLICY the scheduling policy of *ATTR.  */
+extern int pthread_attr_getschedpolicy __P ((__const pthread_attr_t *__attr,
+					     int *__policy));
+
+/* Set scheduling inheritance mode in *ATTR according to INHERIT.  */
+extern int pthread_attr_setinheritsched __P ((pthread_attr_t *__attr,
+					      int __inherit));
+
+/* Return in *INHERIT the scheduling inheritance mode of *ATTR.  */
+extern int pthread_attr_getinheritsched __P ((__const pthread_attr_t *__attr,
+					      int *__inherit));
+
+/* Set scheduling contention scope in *ATTR according to SCOPE.  */
+extern int pthread_attr_setscope __P ((pthread_attr_t *__attr, int __scope));
+
+/* Return in *SCOPE the scheduling contention scope of *ATTR.  */
+extern int pthread_attr_getscope __P ((__const pthread_attr_t *__attr,
+				       int *__scope));
+
+/* Functions for scheduling control. */
+
+/* Set the scheduling parameters for TARGET_THREAD according to POLICY
+   and *PARAM. */
+extern int pthread_setschedparam __P ((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 __P ((pthread_t __target_thread,
+				       int *__policy,
+				       struct sched_param *__param));
+
+
+/* Functions for mutex handling. */
+
+/* Initialize MUTEX using attributes in *MUTEX_ATTR, or use the
+   default values if later is NULL.  */
+extern int __pthread_mutex_init __P ((pthread_mutex_t *__mutex,
+				   __const pthread_mutexattr_t *__mutex_attr));
+extern int pthread_mutex_init __P ((pthread_mutex_t *__mutex,
+				   __const pthread_mutexattr_t *__mutex_attr));
+
+/* Destroy MUTEX.  */
+extern int __pthread_mutex_destroy __P ((pthread_mutex_t *__mutex));
+extern int pthread_mutex_destroy __P ((pthread_mutex_t *__mutex));
+
+/* Try to lock MUTEX.  */
+extern int __pthread_mutex_trylock __P ((pthread_mutex_t *__mutex));
+extern int pthread_mutex_trylock __P ((pthread_mutex_t *__mutex));
+
+/* Wait until lock for MUTEX becomes available and lock it.  */
+extern int __pthread_mutex_lock __P ((pthread_mutex_t *__mutex));
+extern int pthread_mutex_lock __P ((pthread_mutex_t *__mutex));
+
+/* Unlock MUTEX.  */
+extern int __pthread_mutex_unlock __P ((pthread_mutex_t *__mutex));
+extern int pthread_mutex_unlock __P ((pthread_mutex_t *__mutex));
+
+
+/* Functions for handling mutex attributes.  */
+
+/* Initialize mutex attribute object ATTR with default attributes
+   (kind is PTHREAD_MUTEX_FAST_NP).  */
+extern int __pthread_mutexattr_init __P ((pthread_mutexattr_t *__attr));
+extern int pthread_mutexattr_init __P ((pthread_mutexattr_t *__attr));
+
+/* Destroy mutex attribute object ATTR.  */
+extern int __pthread_mutexattr_destroy __P ((pthread_mutexattr_t *__attr));
+extern int pthread_mutexattr_destroy __P ((pthread_mutexattr_t *__attr));
+
+/* Set the mutex kind attribute in *ATTR to KIND (either PTHREAD_MUTEX_FAST_NP
+   or PTHREAD_MUTEX_RECURSIVE_NP). */
+extern int __pthread_mutexattr_setkind_np __P ((pthread_mutexattr_t *__attr,
+						int __kind));
+extern int pthread_mutexattr_setkind_np __P ((pthread_mutexattr_t *__attr,
+					      int __kind));
+/* Return in *KIND the mutex kind attribute in *ATTR. */
+extern int pthread_mutexattr_getkind_np __P ((__const pthread_mutexattr_t *__attr,
+                                              int *__kind));
+
+
+/* Functions for handling conditional variables.  */
+
+/* Initialize condition variable COND using attributes ATTR, or use
+   the default values if later is NULL.  */
+extern int pthread_cond_init __P ((pthread_cond_t *__cond,
+				   __const pthread_condattr_t *__cond_attr));
+
+/* Destroy condition variable COND.  */
+extern int pthread_cond_destroy __P ((pthread_cond_t *__cond));
+
+/* Wake up one thread waiting for condition variable COND.  */
+extern int pthread_cond_signal __P ((pthread_cond_t *__cond));
+
+/* Wake up all threads waiting for condition variables COND.  */
+extern int pthread_cond_broadcast __P ((pthread_cond_t *__cond));
+
+/* Wait for condition variable COND to be signaled or broadcast.
+   MUTEX is assumed to be locked before.  */
+extern int pthread_cond_wait __P ((pthread_cond_t *__cond,
+				   pthread_mutex_t *__mutex));
+
+/* Wait for condition variable COND to be signaled or broadcast until
+   ABSTIME.  MUTEX is assumed to be locked before.  ABSTIME is an
+   absolute time specification; zero is the beginning of the epoch
+   (00:00:00 GMT, January 1, 1970). */
+extern int pthread_cond_timedwait __P ((pthread_cond_t *__cond,
+					pthread_mutex_t *__mutex,
+					__const struct timespec *__abstime));
+
+/* Functions for handling condition variable attributes.  */
+
+/* Initialize condition variable attribute ATTR.  */
+extern int pthread_condattr_init __P ((pthread_condattr_t *__attr));
+
+/* Destroy condition variable attribute ATTR.  */
+extern int pthread_condattr_destroy __P ((pthread_condattr_t *__attr));
+
+
+#ifdef __USE_UNIX98
+/* Functions for handling read-write locks.  */
+
+/* Initialize read-write lock RWLOCK using attributes ATTR, or use
+   the default values if later is NULL.  */
+extern int pthread_rwlock_init __P ((pthread_rwlock_t *__rwlock,
+				     __const pthread_rwlockattr_t *__attr));
+
+/* Destroy read-write lock RWLOCK.  */
+extern int pthread_rwlock_destroy __P ((pthread_rwlock_t *__rwlock));
+
+/* Acquire read lock for RWLOCK.  */
+extern int pthread_rwlock_rdlock __P ((pthread_rwlock_t *__rwlock));
+
+/* Try to acquire read lock for RWLOCK.  */
+extern int pthread_rwlock_tryrdlock __P ((pthread_rwlock_t *__rwlock));
+
+/* Acquire write lock for RWLOCK.  */
+extern int pthread_rwlock_wrlock __P ((pthread_rwlock_t *__rwlock));
+
+/* Try to acquire writelock for RWLOCK.  */
+extern int pthread_rwlock_trywrlock __P ((pthread_rwlock_t *__rwlock));
+
+/* Unlock RWLOCK.  */
+extern int pthread_rwlock_unlock __P ((pthread_rwlock_t *__rwlock));
+
+
+/* Functions for handling read-write lock attributes.  */
+
+/* Initialize attribute object ATTR with default values.  */
+extern int pthread_rwlockattr_init __P ((pthread_rwlockattr_t *__attr));
+
+/* Destroy attribute object ATTR.  */
+extern int pthread_rwlockattr_destroy __P ((pthread_rwlockattr_t *__attr));
+
+/* Return current setting of process-shared attribute of ATTR in PSHARED.  */
+extern int pthread_rwlockattr_getpshared __P ((__const
+					       pthread_rwlockattr_t *__attr,
+					       int *__pshared));
+
+/* Set process-shared attribute of ATTR to PSHARED.  */
+extern int pthread_rwlockattr_setpshared __P ((pthread_rwlockattr_t *__attr,
+					       int __pshared));
+
+/* Return current setting of reader/writer preference.  */
+extern int pthread_rwlockattr_getkind_np __P ((__const
+					       pthread_rwlockattr_t *__attr,
+					       int *__pref));
+
+/* Set reader/write preference.  */
+extern int pthread_rwlockattr_setkind_np __P ((pthread_rwlockattr_t *__attr,
+					       int __pref));
+#endif
+
+
+/* Functions for handling thread-specific data */
+
+/* Create a key value identifying a location in the thread-specific data
+   area.  Each thread maintains a distinct thread-specific data area.
+   DESTR_FUNCTION, if non-NULL, is called with
+   the value associated to that key when the key is destroyed.
+   DESTR_FUNCTION is not called if the value associated is NULL
+   when the key is destroyed. */
+extern int __pthread_key_create __P ((pthread_key_t *__key,
+				      void (*__destr_function) (void *)));
+extern int pthread_key_create __P ((pthread_key_t *__key,
+				    void (*__destr_function) (void *)));
+
+/* Destroy KEY.  */
+extern int pthread_key_delete __P ((pthread_key_t __key));
+
+/* Store POINTER in the thread-specific data slot identified by KEY. */
+extern int __pthread_setspecific __P ((pthread_key_t __key,
+				       __const void *__pointer));
+extern int pthread_setspecific __P ((pthread_key_t __key,
+				     __const void *__pointer));
+
+/* Return current value of the thread-specific data slot identified by KEY.  */
+extern void *__pthread_getspecific __P ((pthread_key_t __key));
+extern void *pthread_getspecific __P ((pthread_key_t __key));
+
+
+/* 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. */
+extern int __pthread_once __P ((pthread_once_t *__once_control,
+				void (*__init_routine) (void)));
+extern int pthread_once __P ((pthread_once_t *__once_control,
+			      void (*__init_routine) (void)));
+
+
+/* Functions for handling cancellation. */
+
+/* Set cancelability state of current thread to STATE, returning old
+   state in *OLDSTATE if OLDSTATE is not NULL.  */
+extern int pthread_setcancelstate __P ((int __state, int *__oldstate));
+
+/* Set cancellation state of current thread to TYPE, returning the old
+   type in *OLDTYPE if OLDTYPE is not NULL.  */
+extern int __pthread_setcanceltype __P ((int __type, int *__oldtype));
+extern int pthread_setcanceltype __P ((int __type, int *__oldtype));
+
+/* Cancel THREAD immediately or at the next possibility.  */
+extern int pthread_cancel __P ((pthread_t __thread));
+
+/* Test for pending cancellation for the current thread and terminate
+   the thread as per pthread_exit(PTHREAD_CANCELED) if it has been
+   cancelled. */
+extern void pthread_testcancel __P ((void));
+
+
+/* Install a cleanup handler: ROUTINE will be called with arguments ARG
+   when the thread is cancelled or calls pthread_exit.  ROUTINE will also
+   be called with arguments ARG when the matching pthread_cleanup_pop
+   is executed with non-zero EXECUTE argument.
+   pthread_cleanup_push and pthread_cleanup_pop are macros and must always
+   be used in matching pairs at the same nesting level of braces. */
+
+#define pthread_cleanup_push(routine,arg)				      \
+  { struct _pthread_cleanup_buffer _buffer;				      \
+    _pthread_cleanup_push (&_buffer, (routine), (arg));
+
+extern void _pthread_cleanup_push __P ((struct _pthread_cleanup_buffer *__buffer,
+					void (*__routine) (void *),
+					void *__arg));
+
+/* Remove a cleanup handler installed by the matching pthread_cleanup_push.
+   If EXECUTE is non-zero, the handler function is called. */
+
+#define pthread_cleanup_pop(execute)					      \
+    _pthread_cleanup_pop (&_buffer, (execute)); }
+
+extern void _pthread_cleanup_pop __P ((struct _pthread_cleanup_buffer *__buffer,
+				       int __execute));
+
+/* Install a cleanup handler as pthread_cleanup_push does, but also
+   saves the current cancellation type and set it to deferred cancellation. */
+
+#define pthread_cleanup_push_defer_np(routine,arg)			      \
+  { struct _pthread_cleanup_buffer _buffer;				      \
+    _pthread_cleanup_push_defer (&_buffer, (routine), (arg));
+
+extern void _pthread_cleanup_push_defer __P ((struct _pthread_cleanup_buffer *__buffer,
+					      void (*__routine) (void *),
+					      void *__arg));
+
+/* Remove a cleanup handler as pthread_cleanup_pop does, but also
+   restores the cancellation type that was in effect when the matching
+   pthread_cleanup_push_defer was called. */
+
+#define pthread_cleanup_pop_restore_np(execute)				      \
+  _pthread_cleanup_pop_restore (&_buffer, (execute)); }
+
+extern void _pthread_cleanup_pop_restore __P ((struct _pthread_cleanup_buffer *__buffer,
+					       int __execute));
+
+/* Functions for handling signals. */
+
+/* Modify the signal mask for the calling thread.  The arguments have
+   the same meaning as for sigprocmask(2). */
+
+extern int pthread_sigmask __P ((int __how, __const sigset_t *__newmask,
+				 sigset_t *__oldmask));
+
+/* Send signal SIGNO to the given thread. */
+
+extern int pthread_kill __P ((pthread_t __thread, int __signo));
+
+
+/* Functions for handling process creation and process execution. */
+
+/* Install handlers to be called when a new process is created with FORK.
+   The PREPARE handler is called in the parent process just before performing
+   FORK. The PARENT handler is called in the parent process just after FORK.
+   The CHILD handler is called in the child process.  Each of the three
+   handlers can be NULL, meaning that no handler needs to be called at that
+   point.
+   PTHREAD_ATFORK can be called several times, in which case the PREPARE
+   handlers are called in LIFO order (last added with PTHREAD_ATFORK,
+   first called before FORK), and the PARENT and CHILD handlers are called
+   in FIFO (first added, first called). */
+
+extern int __pthread_atfork __P ((void (*__prepare) (void),
+				  void (*__parent) (void),
+				  void (*__child) (void)));
+extern int pthread_atfork __P ((void (*__prepare) (void),
+				void (*__parent) (void),
+				void (*__child) (void)));
+
+/* Terminate all threads in the program except the calling process.
+   Should be called just before invoking one of the exec*() functions. */
+
+extern void __pthread_kill_other_threads_np __P ((void));
+extern void pthread_kill_other_threads_np __P ((void));
+
+
+/* This function is called to initialize the pthread library. */
+extern void __pthread_initialize __P ((void));
+
+__END_DECLS
+
+#endif	/* pthread.h */