ChangeLog

1998-08-24  Geoff Keating  <geoffk@ozemail.com.au>

	* spinlock.c (__pthread_lock): Reset p_nextwaiting to NULL if it
	turned out that we didn't need to queue after all.

1998-08-22  Geoff Keating  <geoffk@ozemail.com.au>

	* sysdeps/powerpc/pt-machine.h: Remove testandset, it's not used
	and wastes space; correct types.

1998-08-08 11:18  H.J. Lu  <hjl@gnu.org>

	* signals.c (sigaction): Handle NULL argument.

1998-08-04  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/bits/sigthread.h: Use __sigset_t instead
	of sigset_t.

1998-08-02  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* Makefile (linuxthreads-version): Extract correct number from
	Banner.

1998-07-29  Xavier Leroy  <Xavier.Leroy@inria.fr>

	* Banner: Bump version number to 0.8
	* FAQ.html: Many updates, in particular w.r.t. debugging.
	* manager.c: Support for non-default stacksize for
	LinuxThreads-allocated stacks;
	don't use guard pages for stacks with default size, rely on
	rlimit(RLIMIT_STACK) instead (it's cheaper).
	* attr.c: Likewise.
	* cancel.c: Use __pthread_sig_cancel and __pthread_sig_restart
	everywhere instead of PTHREAD_SIG_CANCEL and PTHREAD_SIG_RESTART.
	* condvar.c: Likewise.
	* internals.h: Likewise.
	* restart.h: Likewise.
	* signals.c: Likewise.
	* pthread.c: Likewise; set rlimit(RLIMIT_STACK) as we need it.

1998-07-23  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* weaks.c: Define pthread_mutexattr_[sg]ettype instead of
	__pthread_mutexattr_[sg]ettype.  Add more weak aliases.
	* Versions: Put __pthread_mutexattr_settype under version
	GLIBC_2.0.  Don't export __pthread_mutexattr_setkind_np and
	__pthread_mutexattr_gettype.

1998-07-23  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/pthread/bits/libc-lock.h: Make
	__pthread_mutexattr_settype weak.  Don't make
	__pthread_mutexattr_setkind_np weak.

1998-07-16 10:52  Ulrich Drepper  <drepper@cygnus.com>

	* manager.c (pthread_handle_create): Check whether sched_setscheduler
	call can succeed here.

	* mutex.c: Define __pthread_mutexattr_settype and make
	__pthread_mutexattr_setkind_np an alias.
	Likewise for __pthread_mutexattr_gettype.

1998-07-15 11:00 -0400  Zack Weinberg  <zack@rabi.phys.columbia.edu>

	* attr.c (pthread_attr_setschedpolicy): Don't check whether caller
	is root.

1998-07-14 19:38  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/pthread/bits/libc-lock.h: Define __libc_cleanup_end.

1998-07-11  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* Examples/ex6.c: Include <unistd.h> for usleep.

1998-06-13 11:04  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* Examples/ex4.c (main): Use exit, not pthread_exit.

1998-07-09 13:39  Ulrich Drepper  <drepper@cygnus.com>

	* Versions: Add __pthread_mutexattr_gettype and
	__pthread_mutexattr_settype.
	* lockfile.c: Use __pthread_mutexattr_settype instead of
	__pthread_mutexattr_setkind_np.
	* mutex.c: Define __pthread_mutexattr_gettype and
	__pthread_mutexattr_settype.
	* weak.c: Likewise.
	* sysdeps/pthread/pthread.h: Declare __pthread_mutexattr_gettype and
	__pthread_mutexattr_settype.
	* sysdeps/pthread/bits/libc-lock.h (__libc_lock_init_recursive):
	Use __pthread_mutexattr_settype.

1998-07-08 22:26  Ulrich Drepper  <drepper@cygnus.com>

	* Versions: Add pthread_mutexattr_gettype, pthread_mutexattr_settype.
	* mutex.c: Define weak alias pthread_mutexattr_gettype and
	pthread_mutexattr_settype.
	* sysdeps/pthread/pthread.h: Declare these functions.
	Move pthread_sigmask and pthread_kill declaration in separate header.
	* sysdeps/unix/sysv/linux/bits/sigthread.h: New file.

1998-07-07 15:20  Ulrich Drepper  <drepper@cygnus.com>

	* Makefile: Add rules to compile and run tests.
	* Examples/ex1.c: Little changes to fix warnings.
	* Examples/ex2.c: Likewise.
	* Examples/ex3.c: Likewise.
	* Examples/ex4.c: Likewise.
	* Examples/ex5.c: Likewise.
	* Examples/ex6.c: New file.

1998-07-05 11:54  Ulrich Drepper  <drepper@cygnus.com>

	* Versions: Add pthread_attr_init to GLIBC_2.1 version in libc.

1998-07-01  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* attr.c: Include <string.h>.

1998-06-30 11:47  Ulrich Drepper  <drepper@cygnus.com>

	* attr.c: Include errno.h.  Use memcpy to copy sched_param.
	* internals.h: Include limits.h.
	* manager.c: Use memcpy to copy sched_param.
	* ptfork.c: Include errno.h.
	* pthread.c: Likewise.
	* semaphore.c: Likewise.
	* specific.c: Likewise.
	* spinlock.h: Likewise.
	* sysdeps/pthread/pthread.h: Include only allowed headers.  Move
	type definition to ...
	* sysdeps/pthread/bits/pthreadtypes.h: ...here.  New file.

1998-06-29 12:34  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/pthread/pthread.h: Use __PMT not __P for function pointers.

	* sysdeps/pthread/pthread.h: Define various PTHREAD_* symbols also
	as macros as demanded in POSIX.1, Annex C.

1998-06-29 12:29  Ulrich Drepper  <drepper@cygnus.com>

	* internals.h (struct pthread_request): For free use pthread_t
	instead of pthread_descr.
	* join.c (pthread_join): Pass thread_id, not th to manager.
	(pthread_detach): Likewise.
	* manager.c (__pthread_manager): Except thread ID in FREE_REQ case.
	(pthread_exited): Remove detached queue code.
	(pthread_handle_free): Expect thread ID parameter and use it to
	validate the thread decsriptor.  Don't use detached queue.
	Patches by Xavier Leroy.

1998-06-27  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* libpthread.map: Export accept, longjmp, sigaction, siglongjmp,
	_IO_flockfile, _IO_ftrylockfile, _IO_funlockfile,
	__pthread_atfork, __pthread_key_create, __pthread_once.
	* internals.h: Doc fix.
	* pthread.c (__pthread_initialize): Define again.

1998-06-26  Ulrich Drepper  <drepper@cygnus.com>

	* manager.c (pthread_exited): If thread is not detached put it on
	special list.
	(pthread_handle_free): If thread is not on list with living threads
	search on list with detached threads.

	* sysdeps/pthread/pthread.h (PTHREAD_RWLOCK_INITIALIZER): Correct
	for new definition of pthread_rwlock_t.

	* spinlock.c: Correct test whether to compile
	__pthread_compare_and_swap or not.

1998-06-25 19:27  Ulrich Drepper  <drepper@cygnus.com>

	* attr.c: Finish user stack support.  Change locking code to be safe
	in situations with different priorities.
	* cancel.c: Likewise.
	* condvar.c: Likewise.
	* internals.h: Likewise.
	* join.c: Likewise.
	* manager.c: Likewise.
	* mutex.c: Likewise.
	* pthread.c: Likewise.
	* ptlongjmp.c: Likewise.
	* queue.h: Likewise.
	* rwlock.c: Likewise.
	* semaphore.c: Likewise.
	* semaphore.h: Likewise.
	* signals.c: Likewise.
	* spinlock.c: Likewise.
	* spinlock.h: Likewise.
	* sysdeps/pthread/pthread.h: Likewise.
	Patches by Xavier Leroy.

	* sysdeps/i386/i686/pt-machine.h: New file.

1998-06-25  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/pthread/pthread.h: Make [sg]et_stacksize and
	[sg]et_stackaddr prototypes always available.

	* sysdeps/unix/sysv/linux/bits/posix_opt.h: Define
	_POSIX_THREAD_ATTR_STACKSIZE and _POSIX_THREAD_ATTR_STACKADDR.

1998-06-24  Ulrich Drepper  <drepper@cygnus.com>

	* manager.c (pthread_free): Undo patch from 980430.
	Reported by David Wragg <dpw@doc.ic.ac.uk>.

1998-06-09 15:07  Ulrich Drepper  <drepper@cygnus.com>

	* manager.c: Define __pthread_manager_adjust_prio and use it to
	increase priority when needed.
	* internals.h: Add prototype for __pthread_manager_adjust_prio.
	* mutex.c: Optimize mutexes to wake up only one thread.
	* pthread.c: Move PID of manager for global variable in structure
	element.
	Patches by Xavier Leroy.

1998-06-07 13:47  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/pthread/bits/libc-lock.h: Optimize cleanup handlers a bit.

1998-06-03  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* attr.c: Correct typo.

1998-05-01  Ulrich Drepper  <drepper@cygnus.com>

	* manager.c (pthread_free): Unmap guard before the stack.
	Patch by Matthias Urlichs.

1998-04-30  Ulrich Drepper  <drepper@cygnus.com>

	* manager.c (pthread_free): Detect already free child.
	Patch by Xavier Leroy, reported by Matthias Urlichs.

1998-04-23  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* Makefile (linuxthreads-version): Renamed back from
	libpthread-version.

1998-04-21  Ulrich Drepper  <drepper@cygnus.com>

	* ptlongjmp.c: Add prototypes for __libc_siglongjmp and
	__libc_longjmp.

1998-04-20 14:55  Ulrich Drepper  <drepper@cygnus.com>

	* Makefile (libpthread-routines): Add ptlongjmp and spinlock.
	* internals.h: Add definitions for new spinlock implementation.
	* ptlongjmp.c: New file.
	* spinlock.c: New file.
	* spinlock.h (acquire): Don't reschedule using __sched_yield, use
	new function __pthread_acquire to prevent deadlocks with thread
	with different priorities.
	Patches by Xavier Leroy <Xavier.Leroy@inria.fr>.

1998-03-16  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* manager.c (__pthread_manager): Reduce first argument to select
	to include just the needed file descriptor.

1998-03-17 00:06  Ulrich Drepper  <drepper@cygnus.com>

	* manager.c: Fix last patch which caused core dumps.

	* pthread.c: Correctly handle missing SIGRTMIN.

1998-03-15  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* libpthread.map: Add __libc_internal_tsd_get and
	__libc_internal_tsd_set.  Add missing cancelable functions. Export
	libc internal versions of the cancelable functions.

1998-03-13 16:51  Ulrich Drepper  <drepper@cygnus.com>

	* weaks.c: Define pthread_attr_init as GLIBC_2.0 and GLIBC_2.1.

1998-03-13 00:46  Ulrich Drepper  <drepper@cygnus.com>

	* attr.c: Implement pthread_attr_[gs]etguardsize,
	pthread_attr_[gs]setstackaddr, pthread_attr_[gs]etstacksize.
	Change pthread_attr_init to have two interfaces.
	* internals.h (struct _pthread_descr_struct): Add new fields for
	above functions.
	* libpthread.map: Add names in GLIBC_2.1 section.
	* manager.c (pthread_handle_create): Implement guardsize and
	user stack.
	(pthread_free): Likewise.
	* pthread.c (pthread_create): Add new interface for changed
	pthread_attr_t.
	* sysdeps/pthread/pthread.h: Add prototypes for new functions.
	* sysdeps/unix/sysv/linux/bits/local_lim.h: Add definition of
	PTHREAD_STACK_MIN.

1998-03-11 00:42  Wolfram Gloger  <wmglo@dent.med.uni-muenchen.de>

	* 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
	warning.

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.