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.

22 files changed, 2095 insertions, 0 deletions

diff --git a/linuxthreads/man/Makefile b/linuxthreads/man/Makefile
new file mode 100644
index 0000000000..4875c3d765
--- /dev/null
+++ b/linuxthreads/man/Makefile
@@ -0,0 +1,31 @@
+SOURCES=pthread_atfork.man pthread_attr_init.man pthread_cancel.man \
+  pthread_cleanup_push.man pthread_cond_init.man \
+  pthread_condattr_init.man pthread_create.man pthread_detach.man \
+  pthread_equal.man pthread_exit.man pthread_join.man \
+  pthread_key_create.man pthread_mutex_init.man \
+  pthread_mutexattr_init.man pthread_once.man pthread_self.man \
+  pthread_setschedparam.man pthread_sigmask.man sem_init.man \
+  pthread_kill_other_threads_np.man
+
+MANPAGES=$(SOURCES:.man=.3thr)
+
+PREPRO=perl troffprepro
+
+MANDIR=/usr/man/man3
+
+all: $(MANPAGES)
+
+.SUFFIXES: .man .3thr
+
+.man.3thr:
+	$(PREPRO) $*.man $*.3thr
+
+$(MANPAGES): troffprepro
+
+clean:
+	rm -f *.3thr
+	rm -f *~
+
+install:
+	install *.3thr $(MANDIR)
+	@echo "*** Remember to run /usr/sbin/makewhatis `dirname $(MANDIR)` at some point"
diff --git a/linuxthreads/man/pthread_atfork.man b/linuxthreads/man/pthread_atfork.man
new file mode 100644
index 0000000000..4d06a56f8b
--- /dev/null
+++ b/linuxthreads/man/pthread_atfork.man
@@ -0,0 +1,58 @@
+.TH PTHREAD_ATFORK 3 LinuxThreads
+
+.SH NAME
+pthread_atfork \- register handlers to be called at fork(2) time
+
+.SH SYNOPSIS
+#include <pthread.h>
+
+int pthread_atfork(void (*prepare)(void), void (*parent)(void), void (*child)(void));
+
+.SH DESCRIPTION
+
+!pthread_atfork! registers handler functions to be called just before
+and just after a new process is created with !fork!(2). The |prepare|
+handler will be called from the parent process, just before the new
+process is created. The |parent| handler will be called from the parent
+process, just before !fork!(2) returns. The |child| handler will be
+called from the child process, just before !fork!(2) returns.
+
+One or several of the three handlers |prepare|, |parent| and |child|
+can be given as !NULL!, meaning that no handler needs to be called at
+the corresponding point.
+
+!pthread_atfork! can be called several times to install several sets
+of handlers. At !fork!(2) time, the |prepare| handlers are called in
+LIFO order (last added with !pthread_atfork!, first called before !fork!),
+while the |parent| and |child| handlers are called in FIFO order
+(first added, first called).
+
+To understand the purpose of !pthread_atfork!, recall that !fork!(2)
+duplicates the whole memory space, including mutexes in their current
+locking state, but only the calling thread: other threads are not
+running in the child process. Thus, if a mutex is locked by a thread
+other than the thread calling !fork!, that mutex will remain locked
+forever in the child process, possibly blocking the execution of the
+child process. To avoid this, install handlers with !pthread_atfork!
+as follows: the |prepare| handler locks the global mutexes (in locking
+order), and the |parent| and |child| handlers unlock them (in
+reverse order). Alternatively, |prepare| and |parent| can be set to
+!NULL! and |child| to a function that calls !pthread_mutex_init! on
+the global mutexes.
+
+.SH "RETURN VALUE"
+
+!pthread_atfork! returns 0 on success and a non-zero error code on error.
+
+.SH ERRORS
+.TP
+!ENOMEM!
+insufficient memory available to register the handlers.
+
+.SH AUTHOR
+Xavier Leroy <Xavier.Leroy@inria.fr>
+
+.SH "SEE ALSO"
+!fork!(2),
+!pthread_mutex_lock!(3),
+!pthread_mutex_unlock!(3).
diff --git a/linuxthreads/man/pthread_attr_init.man b/linuxthreads/man/pthread_attr_init.man
new file mode 100644
index 0000000000..bd5a169242
--- /dev/null
+++ b/linuxthreads/man/pthread_attr_init.man
@@ -0,0 +1,221 @@
+.TH PTHREAD_ATTR_INIT 3 LinuxThreads
+
+.XREF pthread_attr_destroy
+.XREF pthread_attr_setdetachstate
+.XREF pthread_attr_getdetachstate
+.XREF pthread_attr_setschedparam
+.XREF pthread_attr_getschedparam
+.XREF pthread_attr_setschedpolicy
+.XREF pthread_attr_getschedpolicy
+.XREF pthread_attr_setinheritsched
+.XREF pthread_attr_getinheritsched
+.XREF pthread_attr_setscope
+.XREF pthread_attr_getscope
+
+.SH NAME
+pthread_attr_init, pthread_attr_destroy, pthread_attr_setdetachstate, pthread_attr_getdetachstate, pthread_attr_setschedparam, pthread_attr_getschedparam, pthread_attr_setschedpolicy, pthread_attr_getschedpolicy, pthread_attr_setinheritsched, pthread_attr_getinheritsched, pthread_attr_setscope, pthread_attr_getscope \- thread creation attributes
+
+.SH SYNOPSIS
+#include <pthread.h>
+
+int pthread_attr_init(pthread_attr_t *attr);
+
+int pthread_attr_destroy(pthread_attr_t *attr);
+
+int pthread_attr_setdetachstate(pthread_attr_t *attr, int detachstate);
+
+int pthread_attr_getdetachstate(const pthread_attr_t *attr, int *detachstate);
+
+int pthread_attr_setschedpolicy(pthread_attr_t *attr, int policy);
+
+int pthread_attr_getschedpolicy(const pthread_attr_t *attr, int *policy);
+
+int pthread_attr_setschedparam(pthread_attr_t *attr, const struct sched_param *param);
+
+int pthread_attr_getschedparam(const pthread_attr_t *attr, struct sched_param *param);
+
+int pthread_attr_setinheritsched(pthread_attr_t *attr, int inherit);
+
+int pthread_attr_getinheritsched(const pthread_attr_t *attr, int *inherit);
+
+int pthread_attr_setscope(pthread_attr_t *attr, int scope);
+
+int pthread_attr_getscope(const pthread_attr_t *attr, int *scope);
+
+.SH DESCRIPTION
+
+Setting attributes for threads is achieved by filling a
+thread attribute object |attr| of type !pthread_attr_t!, then passing it as
+second argument to !pthread_create!(3). Passing !NULL! is equivalent to
+passing a thread attribute object with all attributes set to their
+default values.
+
+!pthread_attr_init! initializes the thread attribute object |attr| and
+fills it with default values for the attributes. (The default values
+are listed below for each attribute.)
+
+Each attribute |attrname| (see below for a list of all attributes) can
+be individually set using the function !pthread_attr_set!|attrname|
+and retrieved using the function !pthread_attr_get!|attrname|.
+
+!pthread_attr_destroy! destroys a thread attribute object, which
+must not be reused until it is reinitialized. !pthread_attr_destroy!
+does nothing in the LinuxThreads implementation. 
+
+Attribute objects are consulted only when creating a new thread. The
+same attribute object can be used for creating several
+threads. Modifying an attribute object after a call to
+!pthread_create! does not change the attributes of the thread
+previously created.
+
+The following thread attributes are supported:
+
+.SS detachstate
+
+Control whether the thread is created in the joinable state (value
+!PTHREAD_CREATE_JOINABLE!) or in the detached state
+(!PTHREAD_CREATE_DETACHED!). 
+
+Default value: !PTHREAD_CREATE_JOINABLE!.
+
+In the joinable state, another thread can synchronize on the thread
+termination and recover its termination code using !pthread_join!(3),
+but some of the thread resources are kept allocated after the thread
+terminates, and reclaimed only when another thread performs
+!pthread_join!(3) on that thread.
+
+In the detached state, the thread resources are immediately freed when
+it terminates, but !pthread_join!(3) cannot be used to synchronize on
+the thread termination.
+
+A thread created in the joinable state can later be put in the
+detached thread using !pthread_detach!(3).
+
+.SS schedpolicy
+
+Select the scheduling policy for the thread: one of
+!SCHED_OTHER! (regular, non-realtime scheduling),
+!SCHED_RR! (realtime, round-robin) or
+!SCHED_FIFO! (realtime, first-in first-out). See
+!sched_setpolicy!(2) for more information on scheduling policies.
+
+Default value: !SCHED_OTHER!.
+
+The realtime scheduling policies !SCHED_RR! and !SCHED_FIFO! are
+available only to processes with superuser privileges.
+
+The scheduling policy of a thread can be changed after creation with
+!pthread_setschedparam!(3).
+
+.SS schedparam
+
+Contain the scheduling parameters (essentially, the scheduling
+priority) for the thread. See !sched_setparam!(2) for more information
+on scheduling parameters. 
+
+Default value: priority is 0.
+
+This attribute is not significant if the scheduling policy is !SCHED_OTHER!;
+it only matters for the realtime policies !SCHED_RR! and !SCHED_FIFO!.
+
+The scheduling priority of a thread can be changed after creation with
+!pthread_setschedparam!(3).
+
+.SS inheritsched
+
+Indicate whether the scheduling policy and scheduling parameters for
+the newly created thread are determined by the values of the
+|schedpolicy| and |schedparam| attributes (value
+!PTHREAD_EXPLICIT_SCHED!) or are inherited from the parent thread
+(value !PTHREAD_INHERIT_SCHED!).
+
+Default value: !PTHREAD_EXPLICIT_SCHED!.
+
+.SS scope
+
+Define the scheduling contention scope for the created thread.  The
+only value supported in the LinuxThreads implementation is
+!PTHREAD_SCOPE_SYSTEM!, meaning that the threads contend for CPU time
+with all processes running on the machine. In particular, thread
+priorities are interpreted relative to the priorities of all other
+processes on the machine. The other value specified by the standard,
+!PTHREAD_SCOPE_PROCESS!, means that scheduling contention occurs only
+between the threads of the running process: thread priorities are
+interpreted relative to the priorities of the other threads of the
+process, regardless of the priorities of other processes.
+!PTHREAD_SCOPE_PROCESS! is not supported in LinuxThreads.
+
+Default value: !PTHREAD_SCOPE_SYSTEM!.
+
+.SH "RETURN VALUE"
+
+All functions return 0 on success and a non-zero error code on error.
+On success, the !pthread_attr_get!|attrname| functions also store the
+current value of the attribute |attrname| in the location pointed to
+by their second argument.
+
+.SH ERRORS
+
+The !pthread_attr_setdetachstate! function returns the following error
+codes on error:
+.RS
+.TP
+!EINVAL!
+the specified |detachstate| is not one of !PTHREAD_CREATE_JOINABLE! or
+!PTHREAD_CREATE_DETACHED!.
+.RE
+
+The !pthread_attr_setschedparam! function returns the following error
+codes on error:
+.RS
+.TP
+!EINVAL!
+the priority specified in |param| is outside the range of allowed
+priorities for the scheduling policy currently in |attr|
+(1 to 99 for !SCHED_FIFO! and !SCHED_RR!; 0 for !SCHED_OTHER!).
+.RE
+
+The !pthread_attr_setschedpolicy! function returns the following error
+codes on error:
+.RS
+.TP
+!EINVAL!
+the specified |policy| is not one of !SCHED_OTHER!, !SCHED_FIFO!, or
+!SCHED_RR!.
+
+.TP
+!ENOTSUP!
+|policy| is !SCHED_FIFO! or !SCHED_RR!, and the effective user of the
+calling process is not super-user.
+.RE
+
+The !pthread_attr_setinheritsched! function returns the following error
+codes on error:
+.RS
+.TP
+!EINVAL!
+the specified |inherit| is not one of !PTHREAD_INHERIT_SCHED! or
+!PTHREAD_EXPLICIT_SCHED!.
+.RE
+
+The !pthread_attr_setscope! function returns the following error
+codes on error:
+.RS
+.TP
+!EINVAL!
+the specified |scope| is not one of !PTHREAD_SCOPE_SYSTEM! or
+!PTHREAD_SCOPE_PROCESS!.
+
+.TP
+!ENOTSUP!
+the specified |scope| is !PTHREAD_SCOPE_PROCESS! (not supported).
+.RE
+
+.SH AUTHOR
+Xavier Leroy <Xavier.Leroy@inria.fr>
+
+.SH "SEE ALSO"
+!pthread_create!(3),
+!pthread_join!(3),
+!pthread_detach!(3),
+!pthread_setschedparam!(3).
diff --git a/linuxthreads/man/pthread_cancel.man b/linuxthreads/man/pthread_cancel.man
new file mode 100644
index 0000000000..202d5c9b26
--- /dev/null
+++ b/linuxthreads/man/pthread_cancel.man
@@ -0,0 +1,155 @@
+.TH PTHREAD_CANCEL 3 LinuxThreads
+
+.XREF pthread_setcancelstate
+.XREF pthread_setcanceltype
+.XREF pthread_testcancel
+
+.SH NAME
+pthread_cancel, pthread_setcancelstate, pthread_setcanceltype, pthread_testcancel \- thread cancellation
+
+.SH SYNOPSIS
+#include <pthread.h>
+
+int pthread_cancel(pthread_t thread);
+
+int pthread_setcancelstate(int state, int *oldstate);
+
+int pthread_setcanceltype(int type, int *oldtype);
+
+void pthread_testcancel(void);
+
+.SH DESCRIPTION
+
+Cancellation is the mechanism by which a thread can terminate the
+execution of another thread. More precisely, a thread can send a
+cancellation request to another thread. Depending on its settings, the
+target thread can then either ignore the request, honor it
+immediately, or defer it till it reaches a cancellation point.
+
+When a thread eventually honors a cancellation request, it performs as
+if !pthread_exit(PTHREAD_CANCELED)! has been called at that point:
+all cleanup handlers are executed in reverse order, finalization
+functions for thread-specific data are called, and finally the thread
+stops executing with the return value !PTHREAD_CANCELED!. See
+!pthread_exit!(3) for more information.
+
+!pthread_cancel! sends a cancellation request to the thread denoted
+by the |thread| argument.
+
+!pthread_setcancelstate! changes the cancellation state for the
+calling thread -- that is, whether cancellation requests are ignored
+or not. The |state| argument is the new cancellation state: either
+!PTHREAD_CANCEL_ENABLE! to enable cancellation, or
+!PTHREAD_CANCEL_DISABLE! to disable cancellation (cancellation
+requests are ignored). If |oldstate| is not !NULL!, the previous
+cancellation state is stored in the location pointed to by |oldstate|,
+and can thus be restored later by another call to
+!pthread_setcancelstate!.
+
+!pthread_setcanceltype! changes the type of responses to cancellation
+requests for the calling thread: asynchronous (immediate) or deferred.
+The |type| argument is the new cancellation type: either
+!PTHREAD_CANCEL_ASYNCHRONOUS! to cancel the calling thread as soon as
+the cancellation request is received, or !PTHREAD_CANCEL_DEFERRED! to
+keep the cancellation request pending until the next cancellation
+point. If |oldtype| is not !NULL!, the previous
+cancellation state is stored in the location pointed to by |oldtype|,
+and can thus be restored later by another call to
+!pthread_setcanceltype!.
+
+Threads are always created by !pthread_create!(3) with cancellation
+enabled and deferred. That is, the initial cancellation state is
+!PTHREAD_CANCEL_ENABLE! and the initial type is
+!PTHREAD_CANCEL_DEFERRED!.
+
+Cancellation points are those points in the program execution where a
+test for pending cancellation requests is performed and cancellation
+is executed if positive. The following POSIX threads functions
+are cancellation points:
+
+!pthread_join!(3)
+.br
+!pthread_cond_wait!(3)
+.br
+!pthread_cond_timedwait!(3)
+.br
+!pthread_testcancel!(3)
+.br
+!sem_wait!(3)
+.br
+!sigwait!(3)
+
+All other POSIX threads functions are guaranteed not to be
+cancellation points. That is, they never perform cancellation in
+deferred cancellation mode.
+
+!pthread_testcancel! does nothing except testing for pending
+cancellation and executing it. Its purpose is to introduce explicit
+checks for cancellation in long sequences of code that do not call
+cancellation point functions otherwise.
+
+.SH "RETURN VALUE"
+
+!pthread_cancel!, !pthread_setcancelstate! and
+!pthread_setcanceltype! return 0 on success and a non-zero error code
+on error.
+
+.SH ERRORS
+!pthread_cancel! returns the following error code on error:
+.RS
+.TP
+!ESRCH!
+no thread could be found corresponding to that specified by the |thread| ID.
+.RE
+
+!pthread_setcancelstate! returns the following error code on error:
+.RS
+.TP
+!EINVAL!
+the |state| argument is not !PTHREAD_CANCEL_ENABLE! nor
+!PTHREAD_CANCEL_DISABLE!
+.RE
+
+!pthread_setcanceltype! returns the following error code on error:
+.RS
+.TP
+!EINVAL!
+the |type| argument is not !PTHREAD_CANCEL_DEFERRED! nor
+!PTHREAD_CANCEL_ASYNCHRONOUS!
+.RE
+
+.SH AUTHOR
+Xavier Leroy <Xavier.Leroy@inria.fr>
+
+.SH "SEE ALSO"
+!pthread_exit!(3),
+!pthread_cleanup_push!(3),
+!pthread_cleanup_pop!(3).
+
+.SH BUGS
+
+POSIX specifies that a number of system calls (basically, all
+system calls that may block, such as !read!(2), !write!(2), !wait!(2),
+etc.) and library functions that may call these system calls (e.g.
+!fprintf!(3)) are cancellation points.  LinuxThreads is not yet
+integrated enough with the C library to implement this, and thus none
+of the C library functions is a cancellation point.
+
+For system calls at least, there is a workaround. Cancellation
+requests are transmitted to the target thread by sending it a
+signal. That signal will interrupt all blocking system calls, causing
+them to return immediately with the !EINTR! error. So, checking for
+cancellation during a !read! system call, for instance, can be
+achieved as follows:
+
+.RS
+.ft 3
+.nf
+.sp
+pthread_testcancel();
+retcode = read(fd, buffer, length);
+pthread_testcancel();
+.ft
+.LP
+.RE
+.fi
diff --git a/linuxthreads/man/pthread_cleanup_push.man b/linuxthreads/man/pthread_cleanup_push.man
new file mode 100644
index 0000000000..1591431c9c
--- /dev/null
+++ b/linuxthreads/man/pthread_cleanup_push.man
@@ -0,0 +1,194 @@
+.TH PTHREAD_CLEANUP 3 LinuxThreads
+
+.XREF pthread_cleanup_pop
+.XREF pthread_cleanup_push_defer_np
+.XREF pthread_cleanup_pop_restore_np
+
+.SH NAME
+pthread_cleanup_push, pthread_cleanup_pop, pthread_cleanup_push_defer_np, pthread_cleanup_pop_restore_np \- install and remove cleanup handlers
+
+.SH SYNOPSIS
+#include <pthread.h>
+
+void pthread_cleanup_push(void (*routine) (void *), void *arg);
+
+void pthread_cleanup_pop(int execute);
+
+void pthread_cleanup_push_defer_np(void (*routine) (void *), void *arg);
+
+void pthread_cleanup_pop_restore_np(int execute);
+
+.SH DESCRIPTION
+
+Cleanup handlers are functions that get called when a thread
+terminates, either by calling !pthread_exit!(3) or because of
+cancellation. Cleanup handlers are installed and removed following a
+stack-like discipline.
+
+The purpose of cleanup handlers is to free the resources that a thread
+may hold at the time it terminates. In particular, if a thread
+exits or is cancelled while it owns a locked mutex, the mutex will
+remain locked forever and prevent other threads from executing
+normally. The best way to avoid this is, just before locking the
+mutex, to install a cleanup handler whose effect is to unlock the
+mutex. Cleanup handlers can be used similarly to free blocks allocated
+with !malloc!(3) or close file descriptors on thread termination.
+
+!pthread_cleanup_push! installs the |routine| function with argument
+|arg| as a cleanup handler. From this point on to the matching
+!pthread_cleanup_pop!, the function |routine| will be called with
+arguments |arg| when the thread terminates, either through !pthread_exit!(3)
+or by cancellation. If several cleanup handlers are active at that
+point, they are called in LIFO order: the most recently installed
+handler is called first.
+
+!pthread_cleanup_pop! removes the most recently installed cleanup
+handler. If the |execute| argument is not 0, it also executes the
+handler, by calling the |routine| function with arguments |arg|. If
+the |execute| argument is 0, the handler is only removed but not
+executed.
+
+Matching pairs of !pthread_cleanup_push! and !pthread_cleanup_pop!
+must occur in the same function, at the same level of block nesting.
+Actually, !pthread_cleanup_push! and !pthread_cleanup_pop! are macros,
+and the expansion of !pthread_cleanup_push! introduces an open brace !{!
+with the matching closing brace !}! being introduced by the expansion
+of the matching !pthread_cleanup_pop!.
+
+!pthread_cleanup_push_defer_np! is a non-portable extension that
+combines !pthread_cleanup_push! and !pthread_setcanceltype!(3).
+It pushes a cleanup handler just as !pthread_cleanup_push! does, but
+also saves the current cancellation type and sets it to deferred
+cancellation. This ensures that the cleanup mechanism is effective
+even if the thread was initially in asynchronous cancellation mode.
+
+!pthread_cleanup_pop_restore_np! pops a cleanup handler introduced by
+!pthread_cleanup_push_defer_np!, and restores the cancellation type to
+its value at the time !pthread_cleanup_push_defer_np! was called.
+
+!pthread_cleanup_push_defer_np! and !pthread_cleanup_pop_restore_np!
+must occur in matching pairs, at the same level of block nesting.
+
+The following sequence
+
+.RS
+.ft 3
+.nf
+.sp
+pthread_cleanup_push_defer_np(routine, arg);
+...
+pthread_cleanup_pop_defer_np(execute);
+.ft
+.LP
+.RE
+.fi
+
+is functionally equivalent to (but more compact and more efficient than)
+
+.RS
+.ft 3
+.nf
+.sp
+{ int oldtype;
+  pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, &oldtype);
+  pthread_cleanup_push(routine, arg);
+  ...
+  pthread_cleanup_pop(execute);
+  pthread_setcanceltype(oldtype, NULL);
+}
+.ft
+.LP
+.RE
+.fi
+
+.SH "RETURN VALUE"
+
+None.
+
+.SH ERRORS
+
+None.
+
+.SH AUTHOR
+Xavier Leroy <Xavier.Leroy@inria.fr>
+
+.SH "SEE ALSO"
+!pthread_exit!(3),
+!pthread_cancel!(3),
+!pthread_setcanceltype!(3).
+
+.SH EXAMPLE
+
+Here is how to lock a mutex |mut| in such a way that it will be
+unlocked if the thread is canceled while |mut| is locked:
+
+.RS
+.ft 3
+.nf
+.sp
+pthread_cleanup_push(pthread_mutex_unlock, (void *) &mut);
+pthread_mutex_lock(&mut);
+/* do some work */
+pthread_mutex_unlock(&mut);
+pthread_cleanup_pop(0);
+.ft
+.LP
+.RE
+.fi
+
+Equivalently, the last two lines can be replaced by
+
+.RS
+.ft 3
+.nf
+.sp
+pthread_cleanup_pop(1);
+.ft
+.LP
+.RE
+.fi
+
+Notice that the code above is safe only in deferred cancellation mode
+(see !pthread_setcanceltype!(3)). In asynchronous cancellation mode,
+a cancellation can occur between !pthread_cleanup_push! and
+!pthread_mutex_lock!, or between !pthread_mutex_unlock! and
+!pthread_cleanup_pop!, resulting in both cases in the thread trying to
+unlock a mutex not locked by the current thread. This is the main
+reason why asynchronous cancellation is difficult to use.
+
+If the code above must also work in asynchronous cancellation mode,
+then it must switch to deferred mode for locking and unlocking the
+mutex:
+
+.RS
+.ft 3
+.nf
+.sp
+pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, &oldtype);
+pthread_cleanup_push(pthread_mutex_unlock, (void *) &mut);
+pthread_mutex_lock(&mut);
+/* do some work */
+pthread_cleanup_pop(1);
+pthread_setcanceltype(oldtype, NULL);
+.ft
+.LP
+.RE
+.fi
+
+The code above can be rewritten in a more compact and more
+efficient way, using the non-portable functions
+!pthread_cleanup_push_defer_np! and !pthread_cleanup_pop_restore_np!:
+
+.RS
+.ft 3
+.nf
+.sp
+pthread_cleanup_push_restore_np(pthread_mutex_unlock, (void *) &mut);
+pthread_mutex_lock(&mut);
+/* do some work */
+pthread_cleanup_pop_restore_np(1);
+.ft
+.LP
+.RE
+.fi
+
diff --git a/linuxthreads/man/pthread_cond_init.man b/linuxthreads/man/pthread_cond_init.man
new file mode 100644
index 0000000000..b803f08361
--- /dev/null
+++ b/linuxthreads/man/pthread_cond_init.man
@@ -0,0 +1,235 @@
+.TH PTHREAD_COND 3 LinuxThreads
+
+.XREF pthread_cond_signal
+.XREF pthread_cond_broadcast
+.XREF pthread_cond_wait
+.XREF pthread_cond_timedwait
+.XREF pthread_cond_destroy
+
+.SH NAME
+pthread_cond_init, pthread_cond_destroy, pthread_cond_signal, pthread_cond_broadcast, pthread_cond_wait, pthread_cond_timedwait \- operations on conditions
+
+.SH SYNOPSIS
+#include <pthread.h>
+
+pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
+
+int pthread_cond_init(pthread_cond_t *cond, pthread_condattr_t *cond_attr);
+
+int pthread_cond_signal(pthread_cond_t *cond);
+
+int pthread_cond_broadcast(pthread_cond_t *cond);
+
+int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex);
+
+int pthread_cond_timedwait(pthread_cond_t *cond, pthread_mutex_t *mutex, const struct timespec *abstime);
+
+int pthread_cond_destroy(pthread_cond_t *cond);
+
+.SH DESCRIPTION
+
+A condition (short for ``condition variable'') is a synchronization
+device that allows threads to suspend execution and relinquish the
+processors until some predicate on shared data is satisfied. The basic
+operations on conditions are: signal the condition (when the
+predicate becomes true), and wait for the condition, suspending the
+thread execution until another thread signals the condition.
+
+A condition variable must always be associated with a mutex, to avoid
+the race condition where a thread prepares to wait on a condition
+variable and another thread signals the condition just before the
+first thread actually waits on it.
+
+!pthread_cond_init! initializes the condition variable |cond|, using the
+condition attributes specified in |cond_attr|, or default attributes
+if |cond_attr| is !NULL!. The LinuxThreads implementation supports no
+attributes for conditions, hence the |cond_attr| parameter is actually
+ignored.
+
+Variables of type !pthread_cond_t! can also be initialized
+statically, using the constant !PTHREAD_COND_INITIALIZER!.
+
+!pthread_cond_signal! restarts one of the threads that are waiting on
+the condition variable |cond|. If no threads are waiting on |cond|,
+nothing happens. If several threads are waiting on |cond|, exactly one
+is restarted, but it is not specified which.
+
+!pthread_cond_broadcast! restarts all the threads that are waiting on
+the condition variable |cond|. Nothing happens if no threads are
+waiting on |cond|.
+
+!pthread_cond_wait! atomically unlocks the |mutex| (as per
+!pthread_unlock_mutex!) and waits for the condition variable |cond| to
+be signaled. The thread execution is suspended and does not consume
+any CPU time until the condition variable is signaled. The |mutex|
+must be locked by the calling thread on entrance to
+!pthread_cond_wait!. Before returning to the calling thread,
+!pthread_cond_wait! re-acquires |mutex| (as per !pthread_lock_mutex!).
+
+Unlocking the mutex and suspending on the condition variable is done
+atomically. Thus, if all threads always acquire the mutex before
+signaling the condition, this guarantees that the condition cannot be
+signaled (and thus ignored) between the time a thread locks the mutex
+and the time it waits on the condition variable.
+
+!pthread_cond_timedwait! atomically unlocks |mutex| and waits on
+|cond|, as !pthread_cond_wait! does, but it also bounds the duration
+of the wait. If |cond| has not been signaled within the amount of time
+specified by |abstime|, the mutex |mutex| is re-acquired and
+!pthread_cond_timedwait! returns the error !ETIMEDOUT!. 
+The |abstime| parameter specifies an absolute time, with the same
+origin as !time!(2) and !gettimeofday!(2): an |abstime| of 0
+corresponds to 00:00:00 GMT, January 1, 1970.
+
+!pthread_cond_destroy! destroys a condition variable, freeing the
+resources it might hold. No threads must be waiting on the condition
+variable on entrance to !pthread_cond_destroy!. In the LinuxThreads
+implementation, no resources are associated with condition variables,
+thus !pthread_cond_destroy! actually does nothing except checking that
+the condition has no waiting threads.
+
+.SH CANCELLATION
+
+!pthread_cond_wait! and !pthread_cond_timedwait! are cancellation
+points. If a thread is cancelled while suspended in one of these
+functions, the thread immediately resumes execution, then locks again
+the |mutex| argument to !pthread_cond_wait! and
+!pthread_cond_timedwait!, and finally executes the cancellation.
+Consequently, cleanup handlers are assured that |mutex| is locked when
+they are called.
+
+.SH "ASYNC-SIGNAL SAFETY"
+
+The condition functions are not async-signal safe, and should not be
+called from a signal handler. In particular, calling
+!pthread_cond_signal! or !pthread_cond_broadcast! from a signal
+handler may deadlock the calling thread.
+
+.SH "RETURN VALUE"
+
+All condition variable functions return 0 on success and a non-zero
+error code on error.
+
+.SH ERRORS
+
+!pthread_cond_init!, !pthread_cond_signal!, !pthread_cond_broadcast!,
+and !pthread_cond_wait! never return an error code.
+
+The !pthread_cond_timedwait! function returns the following error codes
+on error:
+.RS
+.TP
+!ETIMEDOUT!
+the condition variable was not signaled until the timeout specified by
+|abstime|
+
+.TP
+!EINTR!
+!pthread_cond_timedwait! was interrupted by a signal
+.RE
+
+The !pthread_cond_destroy! function returns the following error code
+on error:
+.RS
+.TP
+!EBUSY!
+some threads are currently waiting on |cond|.
+.RE
+
+.SH AUTHOR
+Xavier Leroy <Xavier.Leroy@inria.fr>
+
+.SH "SEE ALSO"
+!pthread_condattr_init!(3),
+!pthread_mutex_lock!(3),
+!pthread_mutex_unlock!(3),
+!gettimeofday!(2),
+!nanosleep!(2).
+
+.SH EXAMPLE
+
+Consider two shared variables |x| and |y|, protected by the mutex |mut|,
+and a condition variable |cond| that is to be signaled whenever |x|
+becomes greater than |y|.
+
+.RS
+.ft 3
+.nf
+.sp
+int x,y;
+pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER;
+pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
+.ft
+.LP
+.RE
+.fi
+
+Waiting until |x| is greater than |y| is performed as follows:
+
+.RS
+.ft 3
+.nf
+.sp
+pthread_mutex_lock(&mut);
+while (x <= y) {
+        pthread_cond_wait(&cond, &mut);
+}
+/* operate on x and y */
+pthread_mutex_unlock(&mut);
+.ft
+.LP
+.RE
+.fi
+
+Modifications on |x| and |y| that may cause |x| to become greater than
+|y| should signal the condition if needed:
+
+.RS
+.ft 3
+.nf
+.sp
+pthread_mutex_lock(&mut);
+/* modify x and y */
+if (x > y) pthread_mutex_broadcast(&cond);
+pthread_mutex_unlock(&mut);
+.ft
+.LP
+.RE
+.fi
+
+If it can be proved that at most one waiting thread needs to be waken
+up (for instance, if there are only two threads communicating through
+|x| and |y|), !pthread_cond_signal! can be used as a slightly more
+efficient alternative to !pthread_cond_broadcast!. In doubt, use
+!pthread_cond_broadcast!.
+
+To wait for |x| to becomes greater than |y| with a timeout of 5
+seconds, do:
+
+.RS
+.ft 3
+.nf
+.sp
+struct timeval now;
+struct timespec timeout;
+int retcode;
+
+pthread_mutex_lock(&mut);
+gettimeofday(&now);
+timeout.tv_sec = now.tv_sec + 5;
+timeout.tv_nsec = now.tv_usec * 1000;
+retcode = 0;
+while (x <= y && retcode != ETIMEDOUT) {
+        retcode = pthread_cond_timedwait(&cond, &mut, &timeout);
+}
+if (retcode == ETIMEDOUT) {
+        /* timeout occurred */
+} else {
+        /* operate on x and y */
+}
+pthread_mutex_unlock(&mut);
+.ft
+.LP
+.RE
+.fi
+
diff --git a/linuxthreads/man/pthread_condattr_init.man b/linuxthreads/man/pthread_condattr_init.man
new file mode 100644
index 0000000000..f491cbedbe
--- /dev/null
+++ b/linuxthreads/man/pthread_condattr_init.man
@@ -0,0 +1,39 @@
+.TH PTHREAD_CONDATTR 3 LinuxThreads
+
+.XREF pthread_condattr_destroy
+
+.SH NAME
+pthread_condattr_init, pthread_condattr_destroy \- condition creation attributes
+
+.SH SYNOPSIS
+#include <pthread.h>
+
+int pthread_condattr_init(pthread_condattr_t *attr);
+
+int pthread_condattr_destroy(pthread_condattr_t *attr);
+
+.SH DESCRIPTION
+
+Condition attributes can be specified at condition creation time, by passing a
+condition attribute object as second argument to !pthread_cond_init!(3).
+Passing !NULL! is equivalent to passing a condition attribute object with
+all attributes set to their default values.
+
+The LinuxThreads implementation supports no attributes for
+conditions. The functions on condition attributes are included only
+for compliance with the POSIX standard.
+
+!pthread_condattr_init! initializes the condition attribute object
+|attr| and fills it with default values for the attributes.
+!pthread_condattr_destroy! destroys a condition attribute object,
+which must not be reused until it is reinitialized. Both functions do
+nothing in the LinuxThreads implementation.
+
+.SH "RETURN VALUE"
+!pthread_condattr_init! and !pthread_condattr_destroy! always return 0.
+
+.SH AUTHOR
+Xavier Leroy <Xavier.Leroy@inria.fr>
+
+.SH "SEE ALSO"
+!pthread_cond_init!(3).
diff --git a/linuxthreads/man/pthread_create.man b/linuxthreads/man/pthread_create.man
new file mode 100644
index 0000000000..a94004767a
--- /dev/null
+++ b/linuxthreads/man/pthread_create.man
@@ -0,0 +1,46 @@
+.TH PTHREAD_CREATE 3 LinuxThreads
+
+.SH NAME
+pthread_create \- create a new thread
+
+.SH SYNOPSIS
+#include <pthread.h>
+
+int pthread_create(pthread_t * thread, pthread_attr_t * attr, void * (*start_routine)(void *), void * arg);
+
+.SH DESCRIPTION
+!pthread_create! creates a new thread of control that executes
+concurrently with the calling thread. The new thread applies the
+function |start_routine| passing it |arg| as first argument. The new
+thread terminates either explicitly, by calling !pthread_exit!(3),
+or implicitly, by returning from the |start_routine| function. The
+latter case is equivalent to calling !pthread_exit!(3) with the result
+returned by |start_routine| as exit code.
+
+The |attr| argument specifies thread attributes to be applied to the
+new thread. See !pthread_attr_init!(3) for a complete list of thread
+attributes. The |attr| argument can also be !NULL!, in which case
+default attributes are used: the created thread is joinable (not
+detached) and has default (non real-time) scheduling policy.
+
+.SH "RETURN VALUE"
+On success, the identifier of the newly created thread is stored in
+the location pointed by the |thread| argument, and a 0 is returned. On
+error, a non-zero error code is returned.
+
+.SH ERRORS
+.TP
+!EAGAIN!
+not enough system resources to create a process for the new thread.
+.TP
+!EAGAIN!
+more than !PTHREAD_THREADS_MAX! threads are already active.
+
+.SH AUTHOR
+Xavier Leroy <Xavier.Leroy@inria.fr>
+
+.SH "SEE ALSO"
+!pthread_exit!(3),
+!pthread_join!(3),
+!pthread_detach!(3),
+!pthread_attr_init!(3).
diff --git a/linuxthreads/man/pthread_detach.man b/linuxthreads/man/pthread_detach.man
new file mode 100644
index 0000000000..7b43f45faa
--- /dev/null
+++ b/linuxthreads/man/pthread_detach.man
@@ -0,0 +1,44 @@
+.TH PTHREAD_DETACH 3 LinuxThreads
+
+.SH NAME
+pthread_detach \- put a running thread in the detached state
+
+.SH SYNOPSIS
+#include <pthread.h>
+
+int pthread_detach(pthread_t th);
+
+.SH DESCRIPTION
+!pthread_detach! put the thread |th| in the detached state. This
+guarantees that the memory resources consumed by |th| will be freed
+immediately when |th| terminates. However, this prevents other threads
+from synchronizing on the termination of |th| using !pthread_join!.
+
+A thread can be created initially in the detached state, using the
+!detachstate! attribute to !pthread_create!(3). In contrast,
+!pthread_detach! applies to threads created in the joinable state, and
+which need to be put in the detached state later.
+
+After !pthread_detach! completes, subsequent attempts to perform
+!pthread_join! on |th| will fail. If another thread is already joining
+the thread |th| at the time !pthread_detach! is called,
+!pthread_detach! does nothing and leaves |th| in the joinable state.
+
+.SH "RETURN VALUE"
+On success, 0 is returned. On error, a non-zero error code is returned.
+
+.SH ERRORS
+.TP
+!ESRCH!
+No thread could be found corresponding to that specified by |th|
+.TP
+!EINVAL!
+the thread |th| is already in the detached state
+
+.SH AUTHOR
+Xavier Leroy <Xavier.Leroy@inria.fr>
+
+.SH "SEE ALSO"
+!pthread_create!(3),
+!pthread_join!(3),
+!pthread_attr_setdetachstate!(3).
\ No newline at end of file
diff --git a/linuxthreads/man/pthread_equal.man b/linuxthreads/man/pthread_equal.man
new file mode 100644
index 0000000000..1a0396515a
--- /dev/null
+++ b/linuxthreads/man/pthread_equal.man
@@ -0,0 +1,23 @@
+.TH PTHREAD_EQUAL 3 LinuxThreads
+
+.SH NAME
+pthread_equal \- compare two thread identifiers
+
+.SH SYNOPSIS
+#include <pthread.h>
+
+int pthread_equal(pthread_t thread1, pthread_t thread2);
+
+.SH DESCRIPTION
+!pthread_equal! determines if two thread identifiers refer to the same
+thread.
+
+.SH "RETURN VALUE"
+A non-zero value is returned if |thread1| and |thread2| refer to the
+same thread. Otherwise, 0 is returned.
+
+.SH AUTHOR
+Xavier Leroy <Xavier.Leroy@inria.fr>
+
+.SH "SEE ALSO"
+!pthread_self!(3).
diff --git a/linuxthreads/man/pthread_exit.man b/linuxthreads/man/pthread_exit.man
new file mode 100644
index 0000000000..54751e9d05
--- /dev/null
+++ b/linuxthreads/man/pthread_exit.man
@@ -0,0 +1,32 @@
+.TH PTHREAD_EXIT 3 LinuxThreads
+
+.SH NAME
+pthread_exit \- terminate the calling thread
+
+.SH SYNOPSIS
+#include <pthread.h>
+
+void pthread_exit(void *retval);
+
+.SH DESCRIPTION
+!pthread_exit! terminates the execution of the calling thread.
+All cleanup handlers that have been set for the calling thread with
+!pthread_cleanup_push!(3) are executed in reverse order (the most
+recently pushed handler is executed first). Finalization functions for
+thread-specific data are then called for all keys that have non-!NULL!
+values associated with them in the calling thread (see
+!pthread_key_create!(3)). Finally, execution of the calling thread is
+stopped.
+
+The |retval| argument is the return value of the thread. It can be
+consulted from another thread using !pthread_join!(3).
+
+.SH "RETURN VALUE"
+The !pthread_exit! function never returns.
+
+.SH AUTHOR
+Xavier Leroy <Xavier.Leroy@inria.fr>
+
+.SH "SEE ALSO"
+!pthread_create!(3),
+!pthread_join!(3).
diff --git a/linuxthreads/man/pthread_join.man b/linuxthreads/man/pthread_join.man
new file mode 100644
index 0000000000..d587093841
--- /dev/null
+++ b/linuxthreads/man/pthread_join.man
@@ -0,0 +1,70 @@
+.TH PTHREAD_JOIN 3 LinuxThreads
+
+.SH NAME
+pthread_join \- wait for termination of another thread
+
+.SH SYNOPSIS
+#include <pthread.h>
+
+int pthread_join(pthread_t th, void **thread_return);
+
+.SH DESCRIPTION
+!pthread_join! suspends the execution of the calling thread until the
+thread identified by |th| terminates, either by calling !pthread_exit!(3)
+or by being cancelled.
+
+If |thread_return| is not !NULL!, the return value of |th| is stored
+in the location pointed to by |thread_return|.  The return value of
+|th| is either the argument it gave to !pthread_exit!(3), or
+!PTHREAD_CANCELED! if |th| was cancelled.
+
+The joined thread !th! must be in the joinable state: it must not have
+been detached using !pthread_detach!(3) or the
+!PTHREAD_CREATE_DETACHED! attribute to !pthread_create!(3).
+
+When a joinable thread terminates, its memory resources (thread
+descriptor and stack) are not deallocated until another thread
+performs !pthread_join! on it. Therefore, !pthread_join! must be
+called once for each joinable thread created to avoid memory leaks.
+
+At most one thread can wait for the termination of a given
+thread. Calling !pthread_join! on a thread |th| on which another
+thread is already waiting for termination returns an error.
+
+.SH CANCELLATION
+
+!pthread_join! is a cancellation point. If a thread is canceled while
+suspended in !pthread_join!, the thread execution resumes immediately
+and the cancellation is executed without waiting for the |th| thread
+to terminate. If cancellation occurs during !pthread_join!, the |th|
+thread remains not joined.
+
+.SH "RETURN VALUE"
+On success, the return value of |th| is stored in the location pointed
+to by |thread_return|, and 0 is returned. On error, a non-zero error
+code is returned.
+
+.SH ERRORS
+.TP
+!ESRCH!
+No thread could be found corresponding to that specified by |th|.
+.TP
+!EINVAL!
+The |th| thread has been detached.
+.TP
+!EINVAL!
+Another thread is already waiting on termination of |th|.
+.TP
+!EDEADLK!
+The |th| argument refers to the calling thread.
+
+.SH AUTHOR
+Xavier Leroy <Xavier.Leroy@inria.fr>
+
+.SH "SEE ALSO"
+!pthread_exit!(3),
+!pthread_detach!(3),
+!pthread_create!(3),
+!pthread_attr_setdetachstate!(3),
+!pthread_cleanup_push!(3),
+!pthread_key_create!(3).
diff --git a/linuxthreads/man/pthread_key_create.man b/linuxthreads/man/pthread_key_create.man
new file mode 100644
index 0000000000..6823e304c9
--- /dev/null
+++ b/linuxthreads/man/pthread_key_create.man
@@ -0,0 +1,151 @@
+.TH PTHREAD_SPECIFIC 3 LinuxThreads
+
+.SH NAME
+pthread_key_create, pthread_key_delete, pthread_setspecific, pthread_getspecific \- management of thread-specific data
+
+.SH SYNOPSIS
+#include <pthread.h>
+
+int pthread_key_create(pthread_key_t *key, void (*destr_function) (void *));
+
+int pthread_key_delete(pthread_key_t key);
+
+int pthread_setspecific(pthread_key_t key, const void *pointer);
+
+void * pthread_getspecific(pthread_key_t key);
+
+.SH DESCRIPTION
+
+Programs often need global or static variables that have different
+values in different threads. Since threads share one memory space,
+this cannot be achieved with regular variables. Thread-specific data
+is the POSIX threads answer to this need.
+
+Each thread possesses a private memory block, the thread-specific data
+area, or TSD area for short. This area is indexed by TSD keys. The TSD
+area associates values of type !void *! to TSD keys. TSD keys are
+common to all threads, but the value associated with a given TSD key
+can be different in each thread.
+
+For concreteness, the TSD areas can be viewed as arrays of !void *!
+pointers, TSD keys as integer indices into these arrays, and the value
+of a TSD key as the value of the corresponding array element in the
+calling thread.
+
+When a thread is created, its TSD area initially associates !NULL!
+with all keys.
+
+!pthread_key_create! allocates a new TSD key. The key is stored in the
+location pointed to by |key|. There is a limit of !PTHREAD_KEYS_MAX!
+on the number of keys allocated at a given time. The value initially
+associated with the returned key is !NULL! in all currently executing
+threads.
+
+The |destr_function| argument, if not !NULL!, specifies a destructor
+function associated with the key. When a thread terminates via
+!pthread_exit! or by cancellation, |destr_function| is called with
+arguments the value associated with the key in that thread. The
+|destr_function| is not called if that value is !NULL!. The order in
+which destructor functions are called at thread termination time is
+unspecified.
+
+Before the destructor function is called, the !NULL! value is
+associated with the key in the current thread.  A destructor function
+might, however, re-associate non-!NULL! values to that key or some
+other key.  To deal with this, if after all the destructors have been
+called for all non-!NULL! values, there are still some non-!NULL!
+values with associated destructors, then the process is repeated.  The
+LinuxThreads implementation stops the process after
+!PTHREAD_DESTRUCTOR_ITERATIONS! iterations, even if some non-!NULL!
+values with associated descriptors remain.  Other implementations may
+loop indefinitely.
+
+!pthread_key_delete! deallocates a TSD key. It does not check whether
+non-!NULL! values are associated with that key in the currently
+executing threads, nor call the destructor function associated with
+the key.
+
+!pthread_setspecific! changes the value associated with |key| in the
+calling thread, storing the given |pointer| instead.
+
+!pthread_getspecific! returns the value currently associated with
+|key| in the calling thread.
+
+.SH "RETURN VALUE"
+
+!pthread_key_create!, !pthread_key_delete!, and !pthread_setspecific!
+return 0 on success and a non-zero error code on failure. If
+successful, !pthread_key_create! stores the newly allocated key in the
+location pointed to by its |key| argument.
+
+!pthread_getspecific! returns the value associated with |key| on
+success, and !NULL! on error.
+
+.SH ERRORS
+!pthread_key_create! returns the following error code on error:
+.RS
+.TP
+!EAGAIN!
+!PTHREAD_KEYS_MAX! keys are already allocated
+.RE
+
+!pthread_key_delete! and !pthread_setspecific! return the following
+error code on error:
+.RS
+.TP
+!EINVAL!
+|key| is not a valid, allocated TSD key
+.RE
+
+!pthread_getspecific! returns !NULL! if |key| is not a valid,
+allocated TSD key.
+
+.SH AUTHOR
+Xavier Leroy <Xavier.Leroy@inria.fr>
+
+.SH "SEE ALSO"
+pthread_create(3), pthread_exit(3), pthread_testcancel(3).
+
+.SH EXAMPLE
+
+The following code fragment allocates a thread-specific array of 100
+characters, with automatic reclaimation at thread exit:
+
+.RS
+.ft 3
+.nf
+.sp
+/* Key for the thread-specific buffer */
+static pthread_key_t buffer_key;
+
+/* Once-only initialisation of the key */
+static pthread_once_t buffer_key_once = PTHREAD_ONCE_INIT;
+
+/* Allocate the thread-specific buffer */
+void buffer_alloc(void)
+{
+  pthread_once(&buffer_key_once, buffer_key_alloc);
+  pthread_setspecific(buffer_key, malloc(100));
+}
+
+/* Return the thread-specific buffer */
+char * get_buffer(void)
+{
+  return (char *) pthread_getspecific(buffer_key);
+}
+
+/* Allocate the key */
+static void buffer_key_alloc()
+{
+  pthread_key_create(&buffer_key, buffer_destroy);
+}
+
+/* Free the thread-specific buffer */
+static void buffer_destroy(void * buf)
+{
+  free(buf);
+}
+.ft
+.LP
+.RE
+.fi
diff --git a/linuxthreads/man/pthread_kill_other_threads_np.man b/linuxthreads/man/pthread_kill_other_threads_np.man
new file mode 100644
index 0000000000..0de42d52d5
--- /dev/null
+++ b/linuxthreads/man/pthread_kill_other_threads_np.man
@@ -0,0 +1,40 @@
+.TH PTHREAD_KILL_OTHER_THREADS_NP 3 LinuxThreads
+
+.SH NAME
+pthread_kill_other_threads_np \- terminate all threads in program except calling thread
+
+.SH SYNOPSIS
+#include <pthread.h>
+
+void pthread_kill_other_threads_np(void);
+
+.SH DESCRIPTION
+!pthread_kill_other_threads_np! is a non-portable LinuxThreads extension.
+It causes all threads in the program to terminate immediately, except
+the calling thread which proceeds normally. It is intended to be
+called just before a thread calls one of the !exec! functions,
+e.g. !execve!(2).
+
+Termination of the other threads is not performed through
+!pthread_cancel!(3) and completely bypasses the cancellation
+mechanism. Hence, the current settings for cancellation state and
+cancellation type are ignored, and the cleanup handlers are not
+executed in the terminated threads.
+
+.SH AUTHOR
+Xavier Leroy <Xavier.Leroy@inria.fr>
+
+.SH "SEE ALSO"
+!execve!(2),
+!pthread_setcancelstate!(3),
+!pthread_setcanceltype!(3),
+!pthread_cancel!(3).
+
+.SH BUGS
+
+According to POSIX 1003.1c, a successful !exec*! in one of the threads
+should terminate automatically all other threads in the program.
+This behavior is not yet implemented in LinuxThreads.
+Calling !pthread_kill_other_threads_np! before !exec*! achieves much
+of the same behavior, except that if !exec*! ultimately fails, then
+all other threads are already killed.
diff --git a/linuxthreads/man/pthread_mutex_init.man b/linuxthreads/man/pthread_mutex_init.man
new file mode 100644
index 0000000000..bda4ec6c4d
--- /dev/null
+++ b/linuxthreads/man/pthread_mutex_init.man
@@ -0,0 +1,213 @@
+.TH PTHREAD_MUTEX 3 LinuxThreads
+
+.XREF pthread_mutex_lock
+.XREF pthread_mutex_unlock
+.XREF pthread_mutex_trylock
+.XREF pthread_mutex_destroy
+
+.SH NAME
+pthread_mutex_init, pthread_mutex_lock, pthread_mutex_trylock, pthread_mutex_unlock, pthread_mutex_destroy \- operations on mutexes
+
+.SH SYNOPSIS
+#include <pthread.h>
+
+pthread_mutex_t fastmutex = PTHREAD_MUTEX_INITIALIZER;
+
+pthread_mutex_t recmutex = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
+
+pthread_mutex_t errchkmutex = PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP;
+
+int pthread_mutex_init(pthread_mutex_t *mutex, const pthread_mutexattr_t *mutexattr);
+
+int pthread_mutex_lock(pthread_mutex_t *mutex));
+
+int pthread_mutex_trylock(pthread_mutex_t *mutex);
+
+int pthread_mutex_unlock(pthread_mutex_t *mutex);
+
+int pthread_mutex_destroy(pthread_mutex_t *mutex);
+
+.SH DESCRIPTION
+A mutex is a MUTual EXclusion device, and is useful for protecting
+shared data structures from concurrent modifications, and implementing
+critical sections and monitors.
+
+A mutex has two possible states: unlocked (not owned by any thread),
+and locked (owned by one thread). A mutex can never be owned by two
+different threads simultaneously. A thread attempting to lock a mutex
+that is already locked by another thread is suspended until the owning
+thread unlocks the mutex first.
+
+!pthread_mutex_init! initializes the mutex object pointed to by
+|mutex| according to the mutex attributes specified in |mutexattr|.
+If |mutexattr| is !NULL!, default attributes are used instead.
+
+The LinuxThreads implementation supports only one mutex attributes,
+the |mutex kind|, which is either ``fast'', ``recursive'', or
+``error checking''. The kind of a mutex determines whether
+it can be locked again by a thread that already owns it.
+The default kind is ``fast''. See !pthread_mutexattr_init!(3) for more
+information on mutex attributes.
+
+Variables of type !pthread_mutex_t! can also be initialized
+statically, using the constants !PTHREAD_MUTEX_INITIALIZER! (for fast
+mutexes), !PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP! (for recursive
+mutexes), and !PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP! (for error checking
+mutexes).
+
+!pthread_mutex_lock! locks the given mutex. If the mutex is currently
+unlocked, it becomes locked and owned by the calling thread, and
+!pthread_mutex_lock! returns immediately. If the mutex is already
+locked by another thread, !pthread_mutex_lock! suspends the calling
+thread until the mutex is unlocked.
+
+If the mutex is already locked by the calling thread, the behavior of
+!pthread_mutex_lock! depends on the kind of the mutex. If the mutex is
+of the ``fast'' kind, the calling thread is suspended until the mutex
+is unlocked, thus effectively causing the calling thread to
+deadlock. If the mutex is of the ``error checking'' kind,
+!pthread_mutex_lock! returns immediately with the error code !EDEADLK!.
+If the mutex is of the ``recursive'' kind, !pthread_mutex_lock!
+succeeds and returns immediately, recording the number of times the
+calling thread has locked the mutex. An equal number of
+!pthread_mutex_unlock! operations must be performed before the mutex
+returns to the unlocked state.
+
+!pthread_mutex_trylock! behaves identically to !pthread_mutex_lock!,
+except that it does not block the calling thread if the mutex is
+already locked by another thread (or by the calling thread in the case
+of a ``fast'' mutex). Instead, !pthread_mutex_trylock! returns
+immediately with the error code !EBUSY!.
+
+!pthread_mutex_unlock! unlocks the given mutex. The mutex is assumed
+to be locked and owned by the calling thread on entrance to
+!pthread_mutex_unlock!. If the mutex is of the ``fast'' kind,
+!pthread_mutex_unlock! always returns it to the unlocked state. If it
+is of the ``recursive'' kind, it decrements the locking count of the
+mutex (number of !pthread_mutex_lock! operations performed on it by
+the calling thread), and only when this count reaches zero is the
+mutex actually unlocked.
+
+On ``error checking'' mutexes, !pthread_mutex_unlock! actually checks
+at run-time that the mutex is locked on entrance, and that it was
+locked by the same thread that is now calling !pthread_mutex_unlock!.
+If these conditions are not met, an error code is returned and the
+mutex remains unchanged.  ``Fast'' and ``recursive'' mutexes perform
+no such checks, thus allowing a locked mutex to be unlocked by a
+thread other than its owner. This is non-portable behavior and must
+not be relied upon.
+
+!pthread_mutex_destroy! destroys a mutex object, freeing the resources
+it might hold. The mutex must be unlocked on entrance. In the
+LinuxThreads implementation, no resources are associated with mutex
+objects, thus !pthread_mutex_destroy! actually does nothing except
+checking that the mutex is unlocked.
+
+.SH CANCELLATION
+
+None of the mutex functions is a cancellation point, not even
+!pthread_mutex_lock!, in spite of the fact that it can suspend a
+thread for arbitrary durations. This way, the status of mutexes at
+cancellation points is predictable, allowing cancellation handlers to
+unlock precisely those mutexes that need to be unlocked before the
+thread stops executing. Consequently, threads using deferred
+cancellation should never hold a mutex for extended periods of time.
+
+.SH "ASYNC-SIGNAL SAFETY"
+
+The mutex functions are not async-signal safe. What this means is that
+they should not be called from a signal handler. In particular,
+calling !pthread_mutex_lock! or !pthread_mutex_unlock! from a signal
+handler may deadlock the calling thread.
+
+.SH "RETURN VALUE"
+
+!pthread_mutex_init! always returns 0. The other mutex functions
+return 0 on success and a non-zero error code on error.
+
+.SH ERRORS
+
+The !pthread_mutex_lock! function returns the following error code
+on error:
+.RS
+.TP
+!EINVAL!
+the mutex has not been properly initialized.
+
+.TP
+!EDEADLK!
+the mutex is already locked by the calling thread
+(``error checking'' mutexes only).
+.RE
+
+The !pthread_mutex_trylock! function returns the following error codes
+on error:
+.RS
+.TP
+!EBUSY!
+the mutex could not be acquired because it was currently locked.
+
+.TP
+!EINVAL!
+the mutex has not been properly initialized.
+.RE
+
+The !pthread_mutex_unlock! function returns the following error code
+on error:
+.RS
+.TP
+!EINVAL!
+the mutex has not been properly initialized.
+
+.TP
+!EPERM!
+the calling thread does not own the mutex (``error checking'' mutexes only).
+.RE
+
+The !pthread_mutex_destroy! function returns the following error code
+on error:
+.RS
+.TP
+!EBUSY!
+the mutex is currently locked.
+.RE
+
+.SH AUTHOR
+Xavier Leroy <Xavier.Leroy@inria.fr>
+
+.SH "SEE ALSO"
+!pthread_mutexattr_init!(3),
+!pthread_mutexattr_setkind_np!(3),
+!pthread_cancel!(3).
+
+.SH EXAMPLE
+
+A shared global variable |x| can be protected by a mutex as follows:
+
+.RS
+.ft 3
+.nf
+.sp
+int x;
+pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER;
+.ft
+.LP
+.RE
+.fi
+
+All accesses and modifications to |x| should be bracketed by calls to
+!pthread_mutex_lock! and !pthread_mutex_unlock! as follows:
+
+.RS
+.ft 3
+.nf
+.sp
+pthread_mutex_lock(&mut);
+/* operate on x */
+pthread_mutex_unlock(&mut);
+.ft
+.LP
+.RE
+.fi
+
+
diff --git a/linuxthreads/man/pthread_mutexattr_init.man b/linuxthreads/man/pthread_mutexattr_init.man
new file mode 100644
index 0000000000..5ceefdbb56
--- /dev/null
+++ b/linuxthreads/man/pthread_mutexattr_init.man
@@ -0,0 +1,84 @@
+.TH PTHREAD_MUTEXATTR 3 LinuxThreads
+
+.XREF pthread_mutexattr_destroy
+.XREF pthread_mutexattr_setkind_np
+.XREF pthread_mutexattr_getkind_np
+
+.SH NAME
+pthread_mutexattr_init, pthread_mutexattr_destroy, pthread_mutexattr_setkind_np, pthread_mutexattr_getkind_np \- mutex creation attributes
+
+.SH SYNOPSIS
+#include <pthread.h>
+
+int pthread_mutexattr_init(pthread_mutexattr_t *attr);
+
+int pthread_mutexattr_destroy(pthread_mutexattr_t *attr);
+
+int pthread_mutexattr_setkind_np(pthread_mutexattr_t *attr, int kind);
+
+int pthread_mutexattr_getkind_np(const pthread_mutexattr_t *attr, int *kind);
+
+.SH DESCRIPTION
+
+Mutex attributes can be specified at mutex creation time, by passing a
+mutex attribute object as second argument to !pthread_mutex_init!(3).
+Passing !NULL! is equivalent to passing a mutex attribute object with
+all attributes set to their default values.
+
+!pthread_mutexattr_init! initializes the mutex attribute object |attr|
+and fills it with default values for the attributes.
+
+!pthread_mutexattr_destroy! destroys a mutex attribute object, which
+must not be reused until it is reinitialized. !pthread_mutexattr_destroy!
+does nothing in the LinuxThreads implementation. 
+
+LinuxThreads supports only one mutex attribute: the mutex kind, which
+is either !PTHREAD_MUTEX_FAST_NP! for ``fast'' mutexes,
+!PTHREAD_MUTEX_RECURSIVE_NP! for ``recursive'' mutexes,
+or !PTHREAD_MUTEX_ERRORCHECK_NP! for ``error checking'' mutexes.
+As the !NP! suffix indicates, this is a non-portable extension to the
+POSIX standard and should not be employed in portable programs.
+
+The mutex kind determines what happens if a thread attempts to lock a
+mutex it already owns with !pthread_mutex_lock!(3). If the mutex is of
+the ``fast'' kind, !pthread_mutex_lock!(3) simply suspends the calling
+thread forever.  If the mutex is of the ``error checking'' kind,
+!pthread_mutex_lock!(3) returns immediately with the error code
+!EDEADLK!.  If the mutex is of the ``recursive'' kind, the call to
+!pthread_mutex_lock!(3) returns immediately with a success return
+code. The number of times the thread owning the mutex has locked it is
+recorded in the mutex. The owning thread must call
+!pthread_mutex_unlock!(3) the same number of times before the mutex
+returns to the unlocked state.
+
+The default mutex kind is ``fast'', that is, !PTHREAD_MUTEX_FAST_NP!.
+
+!pthread_mutexattr_setkind_np! sets the mutex kind attribute in |attr|
+to the value specified by |kind|.
+
+!pthread_mutexattr_getkind_np! retrieves the current value of the
+mutex kind attribute in |attr| and stores it in the location pointed
+to by |kind|.
+
+.SH "RETURN VALUE"
+!pthread_mutexattr_init!, !pthread_mutexattr_destroy! and
+!pthread_mutexattr_getkind_np! always return 0.
+
+!pthread_mutexattr_setkind_np! returns 0 on success and a non-zero
+error code on error.
+
+.SH ERRORS
+
+On error, !pthread_mutexattr_setkind_np! returns the following error code:
+.TP
+!EINVAL!
+|kind| is neither !PTHREAD_MUTEX_FAST_NP! nor !PTHREAD_MUTEX_RECURSIVE_NP!
+nor !PTHREAD_MUTEX_ERRORCHECK_NP!
+
+.SH AUTHOR
+Xavier Leroy <Xavier.Leroy@inria.fr>
+
+.SH "SEE ALSO"
+!pthread_mutex_init!(3),
+!pthread_mutex_lock!(3),
+!pthread_mutex_unlock!(3).
diff --git a/linuxthreads/man/pthread_once.man b/linuxthreads/man/pthread_once.man
new file mode 100644
index 0000000000..e9d117b656
--- /dev/null
+++ b/linuxthreads/man/pthread_once.man
@@ -0,0 +1,34 @@
+.TH PTHREAD_ONCE 3 LinuxThreads
+
+.SH NAME
+pthread_once \- once-only initialization
+
+.SH SYNOPSIS
+#include <pthread.h>
+
+pthread_once_t once_control = PTHREAD_ONCE_INIT;
+
+int pthread_once(pthread_once_t *once_control, void (*init_routine) (void));
+
+.SH DESCRIPTION
+
+The purpose of !pthread_once! is to ensure that a piece of
+initialization code is executed at most once. The |once_control|
+argument points to a static or extern variable statically initialized
+to !PTHREAD_ONCE_INIT!.
+
+The first time !pthread_once! is called with a given |once_control|
+argument, it calls |init_routine| with no argument and changes the
+value of the |once_control| variable to record that initialization has
+been performed. Subsequent calls to !pthread_once! with the same
+!once_control! argument do nothing. 
+
+.SH "RETURN VALUE"
+!pthread_once! always returns 0.
+
+.SH ERRORS
+None.
+
+.SH AUTHOR
+Xavier Leroy <Xavier.Leroy@inria.fr>
+
diff --git a/linuxthreads/man/pthread_self.man b/linuxthreads/man/pthread_self.man
new file mode 100644
index 0000000000..3aa4a0021e
--- /dev/null
+++ b/linuxthreads/man/pthread_self.man
@@ -0,0 +1,23 @@
+.TH PTHREAD_SELF 3 LinuxThreads
+
+.SH NAME
+pthread_self \- return identifier of current thread
+
+.SH SYNOPSIS
+#include <pthread.h>
+
+pthread_t pthread_self(void);
+
+.SH DESCRIPTION
+!pthread_self! return the thread identifier for the calling thread.
+
+.SH AUTHOR
+Xavier Leroy <Xavier.Leroy@inria.fr>
+
+.SH "SEE ALSO"
+!pthread_equal!(3),
+!pthread_join!(3),
+!pthread_detach!(3),
+!pthread_setschedparam!(3),
+!pthread_getschedparam!(3).
+
diff --git a/linuxthreads/man/pthread_setschedparam.man b/linuxthreads/man/pthread_setschedparam.man
new file mode 100644
index 0000000000..3992927837
--- /dev/null
+++ b/linuxthreads/man/pthread_setschedparam.man
@@ -0,0 +1,79 @@
+.TH PTHREAD_SETSCHEDPARAM 3 LinuxThreads
+
+.XREF pthread_getschedparam
+
+.SH NAME
+pthread_setschedparam, pthread_getschedparam \- control thread scheduling parameters
+
+.SH SYNOPSIS
+#include <pthread.h>
+
+int pthread_setschedparam(pthread_t target_thread, int policy, const struct sched_param *param);
+
+int pthread_getschedparam(pthread_t target_thread, int *policy, struct sched_param *param);
+
+.SH DESCRIPTION
+
+!pthread_setschedparam! sets the scheduling parameters for the thread
+|target_thread| as indicated by |policy| and |param|. |policy| can be
+either !SCHED_OTHER! (regular, non-realtime scheduling), !SCHED_RR!
+(realtime, round-robin) or !SCHED_FIFO! (realtime, first-in
+first-out). |param| specifies the scheduling priority for the two
+realtime policies.  See !sched_setpolicy!(2) for more information on
+scheduling policies.
+
+The realtime scheduling policies !SCHED_RR! and !SCHED_FIFO! are
+available only to processes with superuser privileges.
+
+!pthread_getschedparam! retrieves the scheduling policy and scheduling
+parameters for the thread |target_thread| and store them in the
+locations pointed to by |policy| and |param|, respectively.
+
+.SH "RETURN VALUE"
+!pthread_setschedparam! and !pthread_getschedparam! return 0 on
+success and a non-zero error code on error.
+
+.SH ERRORS
+On error, !pthread_setschedparam! returns the following error codes:
+.RS
+.TP
+!EINVAL!
+|policy| is not one of !SCHED_OTHER!, !SCHED_RR!, !SCHED_FIFO!
+
+.TP
+!EINVAL!
+the priority value specified by |param| is not valid for the specified policy
+
+.TP
+!EPERM!
+the calling process does not have superuser permissions
+
+.TP
+!ESRCH!
+the |target_thread| is invalid or has already terminated
+
+.TP
+!EFAULT!
+|param| points outside the process memory space
+.RE
+
+On error, !pthread_getschedparam! returns the following error codes:
+.RS
+.TP
+!ESRCH!
+the |target_thread| is invalid or has already terminated
+
+.TP
+!EFAULT!
+|policy| or |param| point outside the process memory space
+.RE
+
+.SH AUTHOR
+Xavier Leroy <Xavier.Leroy@inria.fr>
+
+.SH "SEE ALSO"
+!sched_setscheduler!(2),
+!sched_getscheduler!(2),
+!sched_getparam!(2),
+!pthread_attr_setschedpolicy!(3),
+!pthread_attr_setschedparam!(3).
diff --git a/linuxthreads/man/pthread_sigmask.man b/linuxthreads/man/pthread_sigmask.man
new file mode 100644
index 0000000000..784161da2b
--- /dev/null
+++ b/linuxthreads/man/pthread_sigmask.man
@@ -0,0 +1,123 @@
+.TH PTHREAD_SIGNAL 3 LinuxThreads
+
+.XREF pthread_kill
+.XREF sigwait
+
+.SH NAME
+pthread_sigmask, pthread_kill, sigwait \- handling of signals in threads
+
+.SH SYNOPSIS
+#include <pthread.h>
+.br
+#include <signal.h>
+
+int pthread_sigmask(int how, const sigset_t *newmask, sigset_t *oldmask);
+
+int pthread_kill(pthread_t thread, int signo);
+
+int sigwait(const sigset_t *set, int *sig);
+
+.SH DESCRIPTION
+
+!pthread_sigmask! changes the signal mask for the calling thread as
+described by the |how| and |newmask| arguments. If |oldmask| is not
+!NULL!, the previous signal mask is stored in the location pointed to
+by |oldmask|. 
+
+The meaning of the |how| and |newmask| arguments is the same as for
+!sigprocmask!(2). If |how| is !SIG_SETMASK!, the signal mask is set to
+|newmask|. If |how| is !SIG_BLOCK!, the signals specified to |newmask|
+are added to the current signal mask.  If |how| is !SIG_UNBLOCK!, the
+signals specified to |newmask| are removed from the current signal
+mask.
+
+Recall that signal masks are set on a per-thread basis, but signal
+actions and signal handlers, as set with !sigaction!(2), are shared
+between all threads.
+
+!pthread_kill! send signal number |signo| to the thread
+|thread|. The signal is delivered and handled as described in
+!kill!(2).
+
+!sigwait! suspends the calling thread until one of the signals
+in |set| is delivered to the calling thread. It then stores the number
+of the signal received in the location pointed to by |sig| and
+returns. The signals in |set| must be blocked and not ignored on
+entrance to !sigwait!. If the delivered signal has a signal handler
+function attached, that function is |not| called.
+
+.SH CANCELLATION
+
+!sigwait! is a cancellation point.
+
+.SH "RETURN VALUE"
+
+On success, 0 is returned. On failure, a non-zero error code is returned.
+
+.SH ERRORS
+
+The !pthread_sigmask! function returns the following error codes
+on error:
+.RS
+.TP
+!EINVAL!
+|how| is not one of !SIG_SETMASK!, !SIG_BLOCK!, or !SIG_UNBLOCK!
+
+.TP
+!EFAULT!
+|newmask| or |oldmask| point to invalid addresses
+.RE
+
+The !pthread_kill! function returns the following error codes
+on error:
+.RS
+.TP
+!EINVAL!
+|signo| is not a valid signal number
+
+.TP
+!ESRCH!
+the thread |thread| does not exist (e.g. it has already terminated)
+.RE
+
+The !sigwait! function never returns an error.
+
+.SH AUTHOR
+Xavier Leroy <Xavier.Leroy@inria.fr>
+
+.SH "SEE ALSO"
+!sigprocmask!(2),
+!kill!(2),
+!sigaction!(2),
+!sigsuspend!(2).
+
+.SH NOTES
+
+For !sigwait! to work reliably, the signals being waited for must be
+blocked in all threads, not only in the calling thread, since
+otherwise the POSIX semantics for signal delivery do not guarantee
+that it's the thread doing the !sigwait! that will receive the signal.
+The best way to achieve this is block those signals before any threads
+are created, and never unblock them in the program other than by
+calling !sigwait!.
+
+.SH BUGS
+
+Signal handling in LinuxThreads departs significantly from the POSIX
+standard. According to the standard, ``asynchronous'' (external)
+signals are addressed to the whole process (the collection of all
+threads), which then delivers them to one particular thread. The
+thread that actually receives the signal is any thread that does
+not currently block the signal.
+
+In LinuxThreads, each thread is actually a kernel process with its own
+PID, so external signals are always directed to one particular thread.
+If, for instance, another thread is blocked in !sigwait! on that
+signal, it will not be restarted.
+
+The LinuxThreads implementation of !sigwait! installs dummy signal
+handlers for the signals in |set| for the duration of the wait. Since
+signal handlers are shared between all threads, other threads must not
+attach their own signal handlers to these signals, or alternatively
+they should all block these signals (which is recommended anyway --
+see the Notes section).
diff --git a/linuxthreads/man/sem_init.man b/linuxthreads/man/sem_init.man
new file mode 100644
index 0000000000..e3a1a63e36
--- /dev/null
+++ b/linuxthreads/man/sem_init.man
@@ -0,0 +1,132 @@
+.TH SEMAPHORES 3 LinuxThreads
+
+.XREF sem_wait
+.XREF sem_trywait
+.XREF sem_post
+.XREF sem_getvalue
+.XREF sem_destroy
+
+.SH NAME
+sem_init, sem_wait, sem_trywait, sem_post, sem_getvalue, sem_destroy \- operations on semaphores
+
+.SH SYNOPSIS
+#include <semaphore.h>
+
+int sem_init(sem_t *sem, int pshared, unsigned int value);
+
+int sem_wait(sem_t * sem);
+
+int sem_trywait(sem_t * sem);
+
+int sem_post(sem_t * sem);
+
+int sem_getvalue(sem_t * sem, int * sval);
+
+int sem_destroy(sem_t * sem);
+
+.SH DESCRIPTION
+This manual page documents POSIX 1003.1b semaphores, not to be
+confused with SystemV semaphores as described in !ipc!(5), !semctl!(2)
+and !semop!(2).
+
+Semaphores are counters for resources shared between threads. The
+basic operations on semaphores are: increment the counter atomically,
+and wait until the counter is non-null and decrement it atomically.
+
+!sem_init! initializes the semaphore object pointed to by |sem|. The
+count associated with the semaphore is set initially to |value|. The
+|pshared| argument indicates whether the semaphore is local to the
+current process (|pshared| is zero) or is to be shared between several
+processes (|pshared| is not zero). LinuxThreads currently does not
+support process-shared semaphores, thus !sem_init! always returns with
+error !ENOSYS! if |pshared| is not zero.
+
+!sem_wait! suspends the calling thread until the semaphore pointed to
+by |sem| has non-zero count. It then atomically decreases the
+semaphore count.
+
+!sem_trywait! is a non-blocking variant of !sem_wait!. If the
+semaphore pointed to by |sem| has non-zero count, the count is
+atomically decreased and !sem_trywait! immediately returns 0.
+If the semaphore count is zero, !sem_trywait! immediately returns with
+error !EAGAIN!.
+
+!sem_post! atomically increases the count of the semaphore pointed to
+by |sem|. This function never blocks and can safely be used in
+asynchronous signal handlers.
+
+!sem_getvalue! stores in the location pointed to by |sval| the current
+count of the semaphore |sem|.
+
+!sem_destroy! destroys a semaphore object, freeing the resources it
+might hold. No threads should be waiting on the semaphore at the time
+!sem_destroy! is called. In the LinuxThreads implementation, no
+resources are associated with semaphore objects, thus !sem_destroy!
+actually does nothing except checking that no thread is waiting on the
+semaphore.
+
+.SH CANCELLATION
+
+!sem_wait! is a cancellation point.
+
+.SH "ASYNC-SIGNAL SAFETY"
+
+On processors supporting atomic compare-and-swap (Intel 486, Pentium
+and later, Alpha, PowerPC, MIPS II, Motorola 68k), the !sem_post!
+function is async-signal safe and can therefore be
+called from signal handlers. This is the only thread synchronization
+function provided by POSIX threads that is async-signal safe.
+
+On the Intel 386 and the Sparc, the current LinuxThreads
+implementation of !sem_post! is not async-signal safe by lack of the
+required atomic operations.
+
+.SH "RETURN VALUE"
+
+The !sem_wait! and !sem_getvalue! functions always return 0.
+All other semaphore functions return 0 on success and -1 on error, in
+addition to writing an error code in !errno!.
+
+.SH ERRORS
+
+The !sem_init! function sets !errno! to the following codes on error:
+.RS
+.TP
+!EINVAL!
+|value| exceeds the maximal counter value !SEM_VALUE_MAX!
+.TP
+!ENOSYS!
+|pshared| is not zero
+.RE
+
+The !sem_trywait! function sets !errno! to the following error code on error:
+.RS
+.TP
+!EAGAIN!
+the semaphore count is currently 0
+.RE
+
+The !sem_post! function sets !errno! to the following error code on error:
+.RS
+.TP
+!ERANGE!
+after incrementation, the semaphore value would exceed !SEM_VALUE_MAX!
+(the semaphore count is left unchanged in this case)
+.RE
+
+The !sem_destroy! function sets !errno! to the following error code on error:
+.RS
+.TP
+!EBUSY!
+some threads are currently blocked waiting on the semaphore.
+.RE
+
+.SH AUTHOR
+Xavier Leroy <Xavier.Leroy@inria.fr>
+
+.SH "SEE ALSO"
+!pthread_mutex_init!(3),
+!pthread_cond_init!(3),
+!pthread_cancel!(3),
+!ipc!(5).
+
diff --git a/linuxthreads/man/troffprepro b/linuxthreads/man/troffprepro
new file mode 100755
index 0000000000..ba564fefbe
--- /dev/null
+++ b/linuxthreads/man/troffprepro
@@ -0,0 +1,68 @@
+#!/usr/local/bin/perl
+
+$insynopsis = 0;
+
+open(INPUT, $ARGV[0]) || die("cannot open $ARGV[0]");
+open(OUTPUT, "> $ARGV[1]") || die("cannot create $ARGV[1]");
+
+select(OUTPUT);
+
+line:
+while(<INPUT>) {
+  if (/^\.XREF (.*)$/) {
+    $xref = $1;
+    $_ = $ARGV[1];
+    m/^.*\.(([1-8]).*)$/;
+    $suffix = $1;
+    $extension = $2;
+    open(XREF, "> $xref.$suffix");
+    print XREF ".so man$extension/$ARGV[1]\n";
+    close(XREF);
+    next line;
+  }
+  if (/^\.SH/) {
+    $insynopsis = /SYNOPSIS/;
+    print $_;
+    next;
+  }
+  if ($insynopsis) {
+    if (/^#/) {
+      print ".B ", $_;
+    }
+    elsif (/^[a-z]/) {    
+      chop;
+#      if (m/^([a-zA-Z][a-zA-Z0-9_]*\s+[a-zA-Z][a-zA-Z0-9_]*)\(/) {
+#          print ".B \"", $1, "\"\n";
+#          $_ = '(' . $';
+#      }
+#      s/([a-zA-Z][a-zA-Z0-9_]*)(\s*[,()=])/" \1 "\2/g;
+      s/([ *])([a-zA-Z][a-zA-Z0-9_]*)(\s*[,)=])/\1" \2 "\3/g;
+      print ".BI \"", $_, "\"\n";
+    }
+    else {
+      print $_;
+    }
+    next;
+  }
+  chop;
+  s/!([^!]+)!\|([^|]+)\|([^\s]*)\s*/\n.BI "\1" "\2\3"\n/g;
+  s/([!|])([^!|]+)\1([^\s]*)\s*/do subst($1,$2,$3)/eg;
+  s/^\n+//;
+  s/\n+$//;
+  s/\n\n+/\n/g;
+  print $_, "\n";
+}
+
+close(INPUT);
+close(OUTPUT);
+
+sub subst {
+  local ($a, $b, $c) = @_;
+  if ($c) {
+    "\n" . ($a eq "!" ? ".BR " : ".IR ") . "\"$b\" $c\n"
+  } else {
+    "\n" . ($a eq "!" ? ".B " : ".I ") . "\"$b\"\n"
+  }
+}
+
+