2001-05-24 Ulrich Drepper <drepper@redhat.com>
* spinlock.c (__pthread_lock) [HAS_COMPARE_AND_SWAP]: Before doing any
serious work try once whether the lock is uncontested.
Remove duplicate reading of __status before loop.
Change suggested by Hans Boehm <hans_boehm@hp.com>.
* spinlock.h (__pthread_trylock): Remove need for oldstatus variable.
(__pthread_alt_trylock): Likewise.
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.
2000-10-14 Ulrich Drepper <drepper@redhat.com>
* math/libm-test.inc (frexp_test): Add L suffix also to parameters.
(hypot_test): Likewise.
* sysdeps/generic/printf_fphex.c: Compute width of decimal point
string correctly. Handle padding correctly.
* sysdeps/ia64/fpu/printf_fphex.c: Use sizeof in _itowa parameters
correctly.
* sysdeps/ieee754/ldbl-128/printf_fphex.c: Likewise.
* sysdeps/ieee754/ldbl-96/printf_fphex.c: Likewise.
2000-10-12 Alan Modra <alan@linuxcare.com.au>
* FAQ.in: Add --start-group and --end-group.
2000-10-12 Alan Modra <alan@linuxcare.com.au>
* malloc/memusage.c: Conditionalize stack usage calculation on
stack direction.
2000-10-12 Alan Modra <alan@linuxcare.com.au>
* config.h.in: Add ASM_LINE_SEP.
* configure.in: Add test for comment and line separators.
* include/libc-symbols.h: Define and use ASM_LINE_SEP, and add tabs to
placate some hppa assemblers.
* sysdeps/hppa/sysdep.h: Likewise.
* sysdeps/gnu/siglist.c: Insert \n and \t into inline asm.
* sysdeps/unix/sysv/linux/errlist.c: Likewise.
2000-10-12 David Huggins-Daines <dhd@linuxcare.com>
* sysdeps/unix/sysv/linux/Makefile: Include <bits/initspin> in
$(sysdep_headers).
* sysdeps/unix/sysv/linux/bits/initspin.h: Dummy version for
non-threaded platforms.
2000-10-12 David Huggins-Daines <dhd@linuxcare.com>
* configure.in: Add definitions for hppa.
* elf/elf.h: Add PLABEL32 relocation for hppa ELF32, comments
for IPLT and EPLT relocations.
* shlib-versions: Version symbol definitions for hppa-linux.
* sysdeps/unix/sysv/linux/configure.in: Define $arch_minimum_kernel
for hppa.
2000-10-12 David Huggins-Daines <dhd@linuxcare.com>
* sysdeps/hppa/Makefile: New file.
* sysdeps/hppa/Versions: New file.
* sysdeps/hppa/setjmp.S: New file.
* sysdeps/hppa/__longjmp.S: New file.
* sysdeps/hppa/bits/setjmp.h: New file.
* sysdeps/hppa/frame.h: New file.
* sysdeps/hppa/add_n.s: Don't use %r19 (linkage table pointer).
* sysdeps/hppa/sub_n.s: Likewise.
* sysdeps/hppa/lshift.s: Likewise.
* sysdeps/hppa/rshift.s: Likewise.
* sysdeps/hppa/udiv_qrnnd.s: Likewise.
* sysdeps/hppa/hppa1.1/addmul_1.s: Likewise.
* sysdeps/hppa/hppa1.1/submul_1.s: Likewise.
* sysdeps/hppa/hppa1.1/mul_1.s: Likewise.
* sysdeps/hppa/hppa1.1/udiv_qrnnd.s: Likewise.
* sysdeps/hppa/dl-machine.h: New file.
* sysdeps/hppa/dl-fptr.c: New file (note that this is almost
identical to the IA-64 one).
* sysdeps/hppa/dl-lookupcfg.h: Likewise.
* sysdeps/hppa/dl-symaddr.c: Likewise.
* sysdeps/hppa/elf/initfini.c: New file.
* sysdeps/hppa/elf/start.S: New file.
* sysdeps/hppa/fpu/bits/fenv.h: New file.
* sysdeps/hppa/fpu/fclrexcpt.c: New file.
* sysdeps/hppa/fpu/fedisblxcpt.c: New file.
* sysdeps/hppa/fpu/feenablxcpt.c: New file.
* sysdeps/hppa/fpu/fegetenv.c: New file.
* sysdeps/hppa/fpu/fegetexcept.c: New file.
* sysdeps/hppa/fpu/fegetround.c: New file.
* sysdeps/hppa/fpu/feholdexcpt.c: New file.
* sysdeps/hppa/fpu/fesetenv.c: New file.
* sysdeps/hppa/fpu/fesetround.c: New file.
* sysdeps/hppa/fpu/feupdateenv.c: New file.
* sysdeps/hppa/fpu/fegetexcptflg.c: New file.
* sysdeps/hppa/fpu/fraiseexcpt.c: New file.
* sysdeps/hppa/fpu/fsetexcptflg.c: New file.
* sysdeps/hppa/fpu/ftestexcept.c: New file.
* sysdeps/unix/sysv/linux/hppa/Makefile: New file.
* sysdeps/unix/sysv/linux/hppa/Versions: New file.
* sysdeps/unix/sysv/linux/hppa/syscalls.list: New file.
* sysdeps/unix/sysv/linux/hppa/sysdep.c: New file.
* sysdeps/unix/sysv/linux/hppa/sysdep.h: New file.
* sysdeps/unix/sysv/linux/hppa/bits/fcntl.h: New file.
* sysdeps/unix/sysv/linux/hppa/bits/ioctls.h: New file.
* sysdeps/unix/sysv/linux/hppa/bits/mman.h: New file.
* sysdeps/unix/sysv/linux/hppa/bits/sigaction.h: New file.
* sysdeps/unix/sysv/linux/hppa/bits/signum.h: New file.
* sysdeps/unix/sysv/linux/hppa/brk.c: New file.
* sysdeps/unix/sysv/linux/hppa/clone.S: New file.
* sysdeps/unix/sysv/linux/hppa/socket.S: New file.
* sysdeps/unix/sysv/linux/hppa/syscall.S: New file.
* sysdeps/unix/sysv/linux/hppa/setrlimit.c: New file.
* sysdeps/unix/sysv/linux/hppa/getrlimit.c: New file.
* sysdeps/unix/sysv/linux/hppa/getrlimit64.c: New file.
* sysdeps/unix/sysv/linux/hppa/kernel_sigaction.h: New file.
* sysdeps/unix/sysv/linux/hppa/kernel_stat.h: New file.
* sysdeps/unix/sysv/linux/hppa/mmap.c: New file.
* sysdeps/unix/sysv/linux/hppa/profil-counter.h: New file.
* sysdeps/unix/sysv/linux/hppa/procfs.h: New file.
* sysdeps/unix/sysv/linux/hppa/ucontext.h: New file.
* sysdeps/unix/sysv/linux/hppa/umount.c: New file.
2000-10-12 Alan Modra <alan@linuxcare.com.au>
* sysdeps/hppa/hppa1.1/Implies: New file.
* sysdeps/hppa/memusage.h: New file.
2000-07-19 Kaz Kylheku <kaz@ashi.footprints.net>
Bugfixes to the variant of the code for machines with no compare
and swap.
* spinlock.c (__pthread_alt_lock, __pthread_alt_timedlock): Wait
node was not being properly enqueued, due to failing to update
the lock->__status field.
* spinlock.c (__pthread_alt_timedlock): The oldstatus variable was
being set inappropriately, causing the suspend function to be called
with a null self pointer and crash.
2000-07-18 Kaz Kylheku <kaz@ashi.footprints.net>
* spinlock.c (__pthread_alt_lock, __pthread_alt_timedlock): Fixed
bug whereby thr field of waitnode structure would not be correctly
set unless a null self pointer is passed to the functions.
Eliminated redundant calls to thread_self().
2000-07-12 Bruno Haible <haible@clisp.cons.org>
* iconv/gconv_open.c (__gconv_open): Merge duplicated code.
2000-07-12 Bruno Haible <haible@clisp.cons.org>
* iconv/gconv_builtin.c (__gconv_get_builtin_trans): Initialize
__modname.
2000-07-12 Bruno Haible <haible@clisp.cons.org>
* iconv/gconv_open.c (__gconv_open): Initialize
result->__steps[cnt].__data.
2000-07-12 Mark Kettenis <kettenis@gnu.org>
* nss/getent.c (services_keys): Pass port number in network byte
order in call to getservbyport.
2000-07-11 Andreas Jaeger <aj@suse.de>
* stdlib/Makefile (test-canon-ARGS): Fix for building in the
source dir.
* intl/Makefile (do-gettext-test): Likewise.
* dirent/Makefile (opendir-tst1-ARGS): Likewise.
2000-07-11 Andreas Schwab <schwab@suse.de>
* Makeconfig (run-program-prefix): New rule.
(built-program-cmd): Use run-program-prefix.
* 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>.
2000-04-13 Ulrich Drepper <drepper@redhat.com>
* posix/globtest.sh: Work around inconsistency with expanding ~/
in shell (PR libc/1690). Reported by patsmith@pobox.com.
* 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.
2000-04-11 Ulrich Drepper <drepper@redhat.com>
* internals.h: Define MEMORY_BARRIER as empty if not defined already.
* spinlock.c (__pthread_lock): Add memory barriers.
(__pthread_unlock): Likewise.
* sysdeps/alpha/pt-machine.h (MEMORY_BARRIER): Define using mb
instruction.
(RELEASE): Not needed anymore.
(__compare_and_swap): Mark asm as modifying memory.
* sysdeps/powerpc/pt-machine.h (sync): Remove. Replace with definition
of MEMORY_BARRIER.
(__compare_and_swap): Use MEMORY_BARRIER instead of sync.
* sysdeps/sparc/sparc32/pt-machine.h (RELEASE): Not needed anymore.
(MEMORY_BARRIER): Define using stbar.
* sysdeps/sparc/sparc64/pt-machine.h (MEMORY_BARRIER): Define using
stbar.
(__compare_and_swap): Use MEMORY_BARRIER to ensure ordering.
Patch by Xavier Leroy <Xavier.Leroy@inria.fr> based on comments by
Mike Burrows <m3b@pa.dec.com>.
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.
* elf/rtld.c: Split _dl_start in two pieces to prevent GOT usage
before the relocation happened.
Patch by Franz Sirl <Franz.Sirl-kernel@lauterbach.com>.
1998-10-29 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/unix/sysv/linux/ttyname_r.c (ttyname_r): Try reading
/prof/self/fd/FD first.
* sysdeps/unix/sysv/linux/ttyname.c (ttyname): Likewise.
* stdio-common/_itoa.h (_fitoa_word): New inline function. Write
formatted number starting at given position and return pointer to
following byte.
(_fitoa): Likewise, for long long.
* sysdeps/unix/sysv/linux/powerpc/pread.c: Do not use the i386 version.
Instead call the system call wrapper function using an 64bit argument.
* sysdeps/unix/sysv/linux/powerpc/pread64.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/pwrite.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/pwrite64.c: Likewise.
1998-08-26 15:46 Ulrich Drepper <drepper@cygnus.com>
* internals.h: Define THREAD_GETMEM and THREAD_SETMEM to default if
not already defined.
(struct _pthread_descr_struct): Add p_self and p_nr field.
* manager.c (__pthread_handles): Define second element to point
to manager thread.
(__pthread_handles_num): Initialize to 2.
(__pthread_manager): Use INIT_THREAD_SELF with two arguments.
(pthread_start_thread): Likewise.
(pthread_handle_create): Start search for free slot at entry 2.
Initialize new fields p_self and p_nr.
Call __clone with CLONE_PTRACE if available.
(pthread_free): Call FREE_THREAD_SELF if available.
* pthread.c (__pthread_initial_thread): Initialize new fields.
(__pthread_manager_thread): Likewise.
(__pthread_initialize_manager): Call __clone with CLONE_PTRACE.
* cancel.c: Use THREAD_GETMEM and THREAD_SETMEM to access the
elements of the thread descriptor.
* condvar.c: Likewise.
* errno.c: Likewise.
* join.c: Likewise.
* manager.c: Likewise.
* pthread.c: Likewise.
* ptlongjmp.c: Likewise.
* semaphore.c: Likewise.
* signals.c: Likewise.
* specific.c: Likewise.
* spinlock.c: Likewise.
* sysdeps/alpha/pt-machine.h (INIT_THREAD_SELF): Add extra parameter.
* sysdeps/i386/useldt.h: New file.
* sysdeps/i386/i686/pt-machine.h: Show how to use this file.
* sysdeps/sparc/sparc32/pt-machine.h: Define THREAD_GETMEM and
THREAD_SETMEM using __thread_self.
* sysdeps/sparc/sparc64/pt-machine.h: Likewise.
1998-06-30 11:47 Ulrich Drepper <drepper@cygnus.com>
* include/aio.h: New file.
* posix/Makefile (distribute): Add bits/pthreadtypes.h.
(tests): Build and run annexc program.
* posix/annexc.c: New file.
* posix/bits/posix1_lim.h: Add several more _POSIX_* limits.
* rt/aio.h: Remove __need_timespec_t. We can include the whole time.h.
* rt/aio_misc.c: Include limits.h.
* rt/aio_notify.c: Include errno.h.
* sysdeps/unix/sysv/linux/alpha/bits/types.h: Include pthreadtypes.h.
Define size_t.
* sysdeps/unix/sysv/linux/bits/types.h: Likewise.
* sysdeps/unix/sysv/linux/mips/bits/types.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/bits/types.h: Likewise.
* sysdeps/unix/sysv/linux/bits/errno.h: Define ENOTSUP though the
kernel doesn't do this.
* sysdeps/unix/sysv/linux/bits/fcntl.h: Define O_LARGEFILE only if
__USE_LARGEFILE64 is defined.
* sysdeps/unix/sysv/linux/bits/pthreadtypes.h: New file. Empty.
* sysdeps/unix/sysv/linux/bits/sched.h: Define __sched_param struct
if requested.
* sysdeps/unix/sysv/linux/bits/siginifo.h: Protect non-standard names.
* stdlib/isomac.c: Avoid include_next warning.
