2001-05-01 Kaz Kylheku <kaz@ashi.footprints.net>
Memory barrier overhaul following line by line inspection.
* mutex.c (pthread_once): Missing memory barriers added.
* pthread.c (__pthread_wait_for_restart_signal,
__pthread_timedsuspend_new, __pthread_restart_new): Added
memory barriers ``just in case'' and for documentary value.
* spinlock.c (__pthread_release): New inline function for releasing
spinlock, to complement __pthread_acquire. Includes memory
barrier prior to assignment to spinlock, and __asm __volatile
dance to prevent reordering or optimization of the spinlock access.
* spinlock.c (__pthread_unlock, __pthread_alt_lock,
__pthread_alt_timedlock, __pthread_alt_unlock,
__pthread_compare_and_swap): Updated to use new __pthread_release
instead of updating spinlock directly.
* spinlock.c (__pthread_lock, __pthread_unlock, wait_node_alloc,
wait_node_free, wait_node_dequeue, __pthread_alt_lock,
__pthread_alt_timedlock, __pthread_alt_unlock, __pthread_acquire):
Memory barrier overhaul. Lots of missing memory barriers added,
a couple needless ones removed.
* spinlock.c (__pthread_compare_and_swap): testandset optimization
removed, just calls __pthread_acquire, which has the new read
barrier in it before its testandset.
2001-04-21 Ulrich Drepper <drepper@redhat.com>
* elf/dl-support.c: Include cpuclock-init.h. Use CPUCLOCK_VARDEF and
CPUCLOCK_INIT if defined.
* sysdeps/generic/dl-sysdep.c: Likewise.
* sysdeps/generic/cpuclock-init.h: New file.
* sysdeps/unix/i386/i586/cpuclock-init.h: New file.
* sysdeps/unix/i386/i586/Versions: New file.
* sysdeps/unix/i386/i586/clock_settime.c: New file.
* sysdeps/unix/i386/i586/clock_gettime.c: Handle thread CPU clock
separately by calling __pthread_clock_gettime if this function is
available. Subtract offset from tsc value before computing time value.
2001-04-10 Martin Schwidefsky <schwidefsky@de.ibm.com>
* sysdeps/unix/sysv/linux/s390/s390-32/getcontext.S: Fix return
value of getcontext.
* sysdeps/unix/sysv/linux/s390/s390-64/getcontext.S: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/setcontext.S: Fix return
value of setcontext.
* sysdeps/unix/sysv/linux/s390/s390-64/setcontext.S: Likewise.
* sysdeps/unix/sysv/linux/s390/swapcontext.c: Skip setcontext
call by changing the saved context.
2001-03-16 Ulrich Drepper <drepper@redhat.com>
* sysdeps/ieee754/ldbl-96/s_erfl.c: New file.
Contributed by Stephen L. Moshier <moshier@na-net.ornl.gov>.
* sysdeps/i386/fpu/libm-test-ulps: Adjust for addition of erfl and
erfcl.
* sysdeps/ia64/fpu/libm-test-ulps: Likewise.
* sysdeps/unix/sysv/linux/ia64/swapcontext.c: New file.
2001-01-13 Jakub Jelinek <jakub@redhat.com>
* inet/ether_ntoh.c (lookup_function): Change arguments to match
_nss_*_getntohost_r prototype.
(ether_ntohost): Pass errno pointer to NSS function.
2001-01-12 Franz Sirl <Franz.Sirl-kernel@lauterbach.com>
* sysdeps/unix/sysv/linux/powerpc/bits/mman.h (MS_SYNC): Fix value.
(MAP_LOCKED): New definition.
(MAP_NORESERVE): New definition.
* internals.h: Declare __pthread_max_stacksize.
* pthread.c (__pthread_max_stacksize): New variable.
(__pthread_initialize_manager): Determine __pthread_initialize_manager
value.
* manager.c (thread_segment): Return always NULL if FLOATING_STACKS.
(pthread_allocate_stack): Allow kernel to choose stack address if
FLOATING_STACKS. This also handles variable-sized stacks.
Always allocate stack and guardoage together. Use mprotect to
change guardpage access.
* sysdeps/i386/useldt.h: Define FLOATING_STACKS and
ARCH_STACK_MAX_SIZE.
* attr.c (__pthread_attr_setstacksize): Also test value against
upper limit.
2000-08-04 Ulrich Drepper <drepper@redhat.com>
* manager.c (__pthread_nonstandard_stacks): Define only if
THREAD_SELF is not defined.
(pthread_allocate_stack): Always initialize gardaddr to a correct
value.
(pthread_handle_create): Unmap thread with one call.
(pthread_free): Remove test for initial thread before removing stack.
Unmap stack with one call.
* pthread.c (__pthread_initial_thread): Initialize p_userstack to
1 to avoid removing the stack.
* internals.h (strict __pthread_descr_struct): Add p_sem_avail.
* semaphore.c: Handle spurious wakeups.
* sysdeps/pthread/pthread.h: Add back PTHREAD_MUTX_FAST_NP as an alias
for PTHREAD_MUTEX_ADAPTIVE_NP for source code compatibility.
* pthread.c (__pthread_set_own_extricate): Use THREAD_GETMEM.
(__pthread_wait_for_restart): Likewise.
* condvar.c (pthread_cond_wait): Also check whether thread is
cancelable before aborting loop.
(pthread_cond_timedwait): Likewise.
2000-07-25 Mark Kettenis <kettenis@gnu.org>
* nss/nss_files/files-netgrp.c (strip_whitespace): New function.
(_nss_netgroup_parseline): Use strip_whitespace to strip off any
leading and trailing spaces from host, user and domain name.
2000-07-25 Jes Sorensen <jes@linuxcare.com>
* csu/defs.awk: Add support for need_endp.
2000-07-25 Mark Kettenis <kettenis@gnu.org>
* resolv/resolv.h: Remove __P from res_send_qhook and
res_send_rhook typedefs.
2000-07-25 Bruno Haible <haible@clisp.cons.org>
* intl/tst-translit.c (main): Unset OUTPUT_CHARSET.
2000-07-18 Ulrich Drepper <drepper@redhat.com>
* intl/Makefile: Make sure tst-translit is run after tst-gettext.
* locale/C-ctype.c: Add initializers for gap elements.
* locale/programs/ld-ctype.c (ctype_output): Write out index entries
for gap elements.
2000-05-05 H.J. Lu <hjl@gnu.org>
* sysdeps/ia64/pt-machine.h (__compare_and_swap): Change it to
have acquire semantics.
(__compare_and_swap_with_release_semantics): New inline
function.
(HAS_COMPARE_AND_SWAP_WITH_RELEASE_SEMANTICS): New macro.
2000-01-28 Hans Boehm <hboehm@exch.hpl.hp.com>
* manager.c: Fix the problem with signals at startup.
Change the way that thread stacks are allocated on IA64.
Clean up some of the guard page allocation stuff.
1999-12-19 H.J. Lu <hjl@gnu.org>
* internals.h (page_roundup): New.
* attr.c (__pthread_attr_setguardsize); Use page_roundup
instead of roundup.
* manager.c (pthread_allocate_stack): Make sure guardaddr is
page aligned with page_roundup if NEED_SEPARATE_REGISTER_STACK
is define.
1999-12-17 Hans Boehm <hboehm@exch.hpl.hp.com>
* manager.c (pthread_allocate_stack): Unmap the stack top
if failed to map the stack bottom.
Fix the guard page.
(pthread_free): Fix the guard page.
* pthread.c (pthread_initialize): Set rlimit correctly for
NEED_SEPARATE_REGISTER_STACK.
1999-12-16 H.J. Lu <hjl@gnu.org>
* pthread.c (__pthread_initialize_manager): Pass
__pthread_manager_thread_bos instead of
__pthread_manager_thread_tos to __clone2.
1999-12-16 H.J. Lu <hjl@gnu.org>
* manager.c (pthread_allocate_stack): Correct the calculation
of "new_thread_bottom". Remove MAP_GROWSDOWN from mmap for
stack bottom.
1999-12-13 H.J. Lu <hjl@gnu.org>
* sysdeps/ia64/pt-machine.h (__compare_and_swap): Added a stop
bit after setting ar.ccv.
1999-12-12 H.J. Lu <hjl@gnu.org>
* manager.c (pthread_allocate_stack): Make the starting
address of the stack bottom page aligned. FIXME: it may
need changes in other places.
(pthread_handle_create): Likewise.
1999-12-11 Hans Boehm <hboehm@exch.hpl.hp.com>
* manager.c (pthread_allocate_stack): Handle
NEED_SEPARATE_REGISTER_STACK.
(pthread_handle_create): Likewise.
* pthread.c (__pthread_initialize_manager): Likewise.
* sysdeps/ia64/pt-machine.h: Use r13 for thread pointer.
1999-12-02 H.J. Lu <hjl@gnu.org>
* sysdeps/ia64/pt-machine.h: New.
2000-06-10 Ulrich Drepper <drepper@redhat.com>
* pthread.c (__pthread_create_2_1): Optimize a bit.
* internals.h (invalid_handle): Also test for p_terminated != 0.
(nonexisting_handle): New function. Same as old invalid_handle.
* join.c (pthread_join): Use nonexisting_handle instead of
invalid_handle to test for acceptable thread handle.
Reported by Permaine Cheung <pcheung@cygnus.com>.
2000-04-27 Ulrich Drepper <drepper@redhat.com>
* elf/soinit.c (__libc_global_ctors): Call __pthread_initialize_minimal
if this function is available.
* sysdeps/i386/i486/atomicity.h (exchange_and_add): Use uint32_t for
all values.
<haible@clisp.cons.org>.
2000-04-16 Ulrich Drepper <drepper@redhat.com>
* pthread.c: Correct long-time braino. We never set SA_SIGINFO and
therefore don't need the _rt versions of the signal handlers.
* internals.h: Declare __pthread_yield.
* elf/dl-version.c (_dl_check_map_versions): New argument trace_mode.
Before testing versions check that we actually loaded the object
and whether we are in trace mode. If not loaded during tracing don't
test versions in this object.
(_dl_check_all_versions): Take new parameter and pass to
_dl_check_map_versions.
* sysdeps/generic/ldsodefs.h: Update prototypes for
_dl_check_all_versions and _dl_check_map_versions.
* elf/rtld.c (struct version_check_args): Add dotrace.
(version_check_doit): Pass args->dotrace to _dl_check_all_versions.
(dl_main): Pass info about trace mode to version_check_doit.
* elf/dl-open.c (dl_open_worker): Pass zero as new argument to
_dl_check_all_versions.
* manual/users.texi (XPG Functions): Document utmpxname, getutmp,
and getutmpx.
Patch by Bryan Henderson <bryanh@giraffe-data.com>.
* sysdeps/unix/sysv/linux/alpha/adjtime.c: Fix typo in
compat_symbol call for old adjtime.
* sysdeps/alpha/dl-machine.h (RTLD_START): Rewrite for new init
* sysdeps/pthread/pthread.h: Add prototypes for pthread_spin_init,
pthread_spin_destroy, pthread_spin_lock, pthread_spin_trylock,
and pthread_spin_unlock.
* sysdeps/pthread/bits/pthreadtypes.h: Change struct _pthread_fastlock
into pthread_spinlock_t. Change all uses.
* spinlock.c: Implement pthread_spin_lock.
Rename __pthread_unlock to __pthread_spin_unlock and define weak
alias for real name.
Define pthread_spin_trylock, pthread_spin_init, and
pthread_spin_destroy.
Change all uses of _pthread_fastlock to pthread_spinlock_t.
* spinlock.h: Rename __pthread_unlock to __pthread_spin_unlock.
Change all uses of _pthread_fastlock to pthread_spinlock_t.
* Versions [libpthread] (GLIBC_2.2): Add pthread_spin_init,
pthread_spin_destroy, pthread_spin_lock, pthread_spin_trylock,
and pthread_spin_unlock.
* cancel.c: Use __pthread_spin_unlock instead of __pthread_unlock.
Change all uses of _pthread_fastlock to pthread_spinlock_t.
* condvar.c: Likewise.
* internals.h: Likewise.
* join.c: Likewise.
* manager.c: Likewise.
* mutex.c: Likewise.
* pthread.c: Likewise.
* rwlock.c: Likewise.
* semaphore.c: Likewise.
* signals.c: Likewise.
2000-03-21 Ulrich Drepper <drepper@redhat.com>
* include/shlib-compat.h (versioned_symbol): Give preprocessor the
chance to expand VERSION_##lib##_##version.
2000-03-14 Andreas Jaeger <aj@suse.de>
* pthread.c (pthread_handle_sigcancel_rt): GS has been renamed to
REG_GS.
(pthread_handle_sigrestart_rt): Likewise.
* signals.c (pthread_sighandler_rt): Likewise.
2000-01-03 Kaz Kylheku <kaz@ashi.footprints.net>
Redesigned how cancellation unblocks a thread from internal
cancellation points (sem_wait, pthread_join,
pthread_cond_{wait,timedwait}).
Cancellation won't eat a signal in any of these functions
(*required* by POSIX and Single Unix Spec!).
* condvar.c: spontaneous wakeup on pthread_cond_timedwait won't eat a
simultaneous condition variable signal (not required by POSIX
or Single Unix Spec, but nice).
* spinlock.c: __pthread_lock queues back any received restarts
that don't belong to it instead of assuming ownership of lock
upon any restart; fastlock can no longer be acquired by two threads
simultaneously.
* restart.h: restarts queue even on kernels that don't have
queued real time signals (2.0, early 2.1), thanks to atomic counter,
avoiding a rare race condition in pthread_cond_timedwait.
Ulrich Drepper
Andreas Jaeger