mirror of
https://sourceware.org/git/glibc.git
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Update.
2003-09-22 Jakub Jelinek <jakub@redhat.com> * sysdeps/unix/sysv/linux/lowlevellock.c (__lll_timedlock_wait): Use lll_futex_timed_wait instead of lll_futex_wait. * sysdeps/unix/sysv/linux/s390/lowlevellock.c: Removed. * sysdeps/unix/sysv/linux/s390/lowlevelmutex.c: Removed. * sysdeps/unix/sysv/linux/s390/libc-lowlevellock.c: Removed. * sysdeps/unix/sysv/linux/s390/libc-lowlevelmutex.c: Removed. * sysdeps/unix/sysv/linux/s390/sem_trywait.c: Removed. * sysdeps/unix/sysv/linux/s390/sem_wait.c: Removed. * sysdeps/unix/sysv/linux/s390/sem_post.c: Removed. * sysdeps/unix/sysv/linux/s390/sem_timedwait.c: Removed. * sysdeps/unix/sysv/linux/s390/lowlevellock.h: Include atomic.h. Completely revamp the locking macros. No distinction between normal and mutex locking anymore. * sysdeps/unix/sysv/linux/sparc/lowlevellock.h: Likewise. * sysdeps/unix/sysv/linux/ia64/lowlevellock.h (__lll_lock_wait, __lll_lock_timedwait): Fix prototypes. * sysdeps/unix/sysv/linux/powerpc/lowlevellock.h (__lll_lock_wait, __lll_lock_timedwait): Likewise. (lll_mutex_lock, lll_mutex_cond_lock): Use _val instead of _bool macros, add __builtin_expect. (lll_mutex_timedlock): Likewise. Fix return value. * sysdeps/unix/sysv/linux/i386/i486/libc-lowlevelmutex.S: Removed. * sysdeps/unix/sysv/linux/i386/i586/libc-lowlevelmutex.S: Removed. * sysdeps/unix/sysv/linux/i386/i586/lowlevelmutex.S: Removed. * sysdeps/unix/sysv/linux/i386/i686/libc-lowlevelmutex.S: Removed. * sysdeps/unix/sysv/linux/i386/i686/lowlevelmutex.S: Removed. * sysdeps/unix/sysv/linux/x86_64/libc-lowlevelmutex.S: Removed. * sysdeps/unix/sysv/linux/lowlevelmutex.c: Removed. * sysdeps/unix/sysv/linux/libc-lowlevelmutex.c: Removed.
This commit is contained in:
Ulrich Drepper
parent
c0df57e1ce
commit
39358e8b2b
@ -71,8 +71,8 @@
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#ifndef atomic_compare_and_exchange_val_rel
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# define atomic_compare_and_exchange_val_rel(mem, oldval, newval) \
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atomic_compare_and_exchange_val_acq (mem, oldval, newval)
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# define atomic_compare_and_exchange_val_rel(mem, newval, oldval) \
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atomic_compare_and_exchange_val_acq (mem, newval, oldval)
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#endif
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@ -95,8 +95,8 @@
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#ifndef atomic_compare_and_exchange_bool_rel
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# define atomic_compare_and_exchange_bool_rel(mem, oldval, newval) \
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atomic_compare_and_exchange_bool_acq (mem, oldval, newval)
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# define atomic_compare_and_exchange_bool_rel(mem, newval, oldval) \
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atomic_compare_and_exchange_bool_acq (mem, newval, oldval)
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#endif
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@ -1,3 +1,35 @@
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2003-09-22 Jakub Jelinek <jakub@redhat.com>
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* sysdeps/unix/sysv/linux/lowlevellock.c (__lll_timedlock_wait): Use
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lll_futex_timed_wait instead of lll_futex_wait.
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* sysdeps/unix/sysv/linux/s390/lowlevellock.c: Removed.
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* sysdeps/unix/sysv/linux/s390/lowlevelmutex.c: Removed.
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* sysdeps/unix/sysv/linux/s390/libc-lowlevellock.c: Removed.
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* sysdeps/unix/sysv/linux/s390/libc-lowlevelmutex.c: Removed.
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* sysdeps/unix/sysv/linux/s390/sem_trywait.c: Removed.
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* sysdeps/unix/sysv/linux/s390/sem_wait.c: Removed.
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* sysdeps/unix/sysv/linux/s390/sem_post.c: Removed.
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* sysdeps/unix/sysv/linux/s390/sem_timedwait.c: Removed.
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* sysdeps/unix/sysv/linux/s390/lowlevellock.h: Include atomic.h.
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Completely revamp the locking macros. No distinction between
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normal and mutex locking anymore.
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* sysdeps/unix/sysv/linux/sparc/lowlevellock.h: Likewise.
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* sysdeps/unix/sysv/linux/ia64/lowlevellock.h (__lll_lock_wait,
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__lll_lock_timedwait): Fix prototypes.
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* sysdeps/unix/sysv/linux/powerpc/lowlevellock.h (__lll_lock_wait,
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__lll_lock_timedwait): Likewise.
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(lll_mutex_lock, lll_mutex_cond_lock): Use _val instead of _bool
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macros, add __builtin_expect.
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(lll_mutex_timedlock): Likewise. Fix return value.
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* sysdeps/unix/sysv/linux/i386/i486/libc-lowlevelmutex.S: Removed.
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* sysdeps/unix/sysv/linux/i386/i586/libc-lowlevelmutex.S: Removed.
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* sysdeps/unix/sysv/linux/i386/i586/lowlevelmutex.S: Removed.
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* sysdeps/unix/sysv/linux/i386/i686/libc-lowlevelmutex.S: Removed.
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* sysdeps/unix/sysv/linux/i386/i686/lowlevelmutex.S: Removed.
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* sysdeps/unix/sysv/linux/x86_64/libc-lowlevelmutex.S: Removed.
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* sysdeps/unix/sysv/linux/lowlevelmutex.c: Removed.
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* sysdeps/unix/sysv/linux/libc-lowlevelmutex.c: Removed.
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2003-09-22 Ulrich Drepper <drepper@redhat.com>
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* sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S
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@ -1,30 +0,0 @@
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/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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/* In libc.so we do not unconditionally use the lock prefix. Only if
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the application is using threads. */
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#ifndef UP
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# define LOCK \
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cmpl $0, %gs:MULTIPLE_THREADS_OFFSET; \
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je,pt 0f; \
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lock; \
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0:
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#endif
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#include "lowlevelmutex.S"
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@ -1 +0,0 @@
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#include "../i486/libc-lowlevelmutex.S"
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@ -1,20 +0,0 @@
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/* Copyright (C) 2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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|
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include "../i486/lowlevelmutex.S"
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@ -1 +0,0 @@
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#include "../i486/libc-lowlevelmutex.S"
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@ -1,20 +0,0 @@
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/* Copyright (C) 2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include "../i486/lowlevelmutex.S"
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@ -120,7 +120,7 @@ __lll_mutex_trylock (int *futex)
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#define lll_mutex_trylock(futex) __lll_mutex_trylock (&(futex))
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extern void __lll_lock_wait (int *futex, int val) attribute_hidden;
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extern void __lll_lock_wait (int *futex) attribute_hidden;
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static inline void
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@ -143,7 +143,7 @@ __lll_mutex_cond_lock (int *futex)
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#define lll_mutex_cond_lock(futex) __lll_mutex_cond_lock (&(futex))
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extern int __lll_timedlock_wait (int *futex, int val, const struct timespec *)
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extern int __lll_timedlock_wait (int *futex, const struct timespec *)
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attribute_hidden;
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@ -1 +0,0 @@
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/* Nothing needed here in fact. */
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@ -68,7 +68,7 @@ __lll_timedlock_wait (int *futex, const struct timespec *abstime)
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/* Wait. */
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int oldval = atomic_compare_and_exchange_val_acq (futex, 2, 1);
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if (oldval != 0)
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lll_futex_wait (futex, 2);
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lll_futex_timed_wait (futex, 2, &rt);
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}
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while (atomic_compare_and_exchange_bool_acq (futex, 2, 0) != 0);
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@ -1 +0,0 @@
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/* Nothing needed here in fact. */
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@ -101,30 +101,35 @@
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#define lll_mutex_trylock(lock) __lll_trylock (&(lock))
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extern void __lll_lock_wait (int *futex, int val) attribute_hidden;
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extern void __lll_lock_wait (int *futex) attribute_hidden;
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#define lll_mutex_lock(lock) \
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(void) ({ \
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int *__futex = &(lock); \
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if (atomic_compare_and_exchange_bool_acq (__futex, 1, 0) != 0) \
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if (__builtin_expect (atomic_compare_and_exchange_val_acq (__futex, 1, 0),\
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0) != 0) \
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__lll_lock_wait (__futex); \
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})
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#define lll_mutex_cond_lock(lock) \
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(void) ({ \
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int *__futex = &(lock); \
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if (atomic_compare_and_exchange_bool_acq (__futex, 2, 0) != 0) \
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if (__builtin_expect (atomic_compare_and_exchange_val_acq (__futex, 2, 0),\
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0) != 0) \
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__lll_lock_wait (__futex); \
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})
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extern int __lll_timedlock_wait
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(int *futex, int val, const struct timespec *) attribute_hidden;
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(int *futex, const struct timespec *) attribute_hidden;
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#define lll_mutex_timedlock(lock, abstime) \
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(void) ({ \
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({ \
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int *__futex = &(lock); \
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if (atomic_compare_and_exchange_bool_acq (__futex, 1, 0) != 0) \
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__lll_timedlock_wait (__futex, abstime); \
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int __val = 0; \
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if (__builtin_expect (atomic_compare_and_exchange_val_acq (__futex, 1, 0),\
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0) != 0) \
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__val = __lll_timedlock_wait (__futex, abstime); \
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__val; \
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})
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#define lll_mutex_unlock(lock) \
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@ -1,41 +0,0 @@
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/* Copyright (C) 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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|
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <errno.h>
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#include <sysdep.h>
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#include <lowlevellock.h>
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#include <sys/time.h>
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void
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___lll_lock (futex, newval)
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int *futex;
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int newval;
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{
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do
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{
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int oldval;
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lll_futex_wait (futex, newval);
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lll_compare_and_swap (futex, oldval, newval, "lr %2,%1; ahi %2,-1");
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}
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while (newval != 0);
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*futex = -1;
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}
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@ -1,21 +0,0 @@
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/* Copyright (C) 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
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version 2.1 of the License, or (at your option) any later version.
|
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|
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The GNU C Library is distributed in the hope that it will be useful,
|
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but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, write to the Free
|
||||
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
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02111-1307 USA. */
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/* No difference to lowlevelmutex.c */
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#include "lowlevelmutex.c"
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@ -1,99 +0,0 @@
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/* Copyright (C) 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
|
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Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
|
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|
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The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, write to the Free
|
||||
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
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02111-1307 USA. */
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#include <errno.h>
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#include <sysdep.h>
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#include <lowlevellock.h>
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#include <sys/time.h>
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void
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___lll_lock (futex, newval)
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int *futex;
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int newval;
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{
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do
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{
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int oldval;
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lll_futex_wait (futex, newval);
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lll_compare_and_swap (futex, oldval, newval, "lr %2,%1; ahi %2,-1");
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}
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while (newval != 0);
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*futex = -1;
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}
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|
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|
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int
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lll_unlock_wake_cb (futex)
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int *futex;
|
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{
|
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int oldval;
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int newval;
|
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|
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lll_compare_and_swap (futex, oldval, newval, "lr %2,%1; ahi %2,1");
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if (oldval < 0)
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lll_futex_wake (futex, 1);
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return 0;
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}
|
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|
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|
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int
|
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___lll_timedwait_tid (ptid, abstime)
|
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int *ptid;
|
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const struct timespec *abstime;
|
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{
|
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int tid;
|
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|
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if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000)
|
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return EINVAL;
|
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|
||||
/* Repeat until thread terminated. */
|
||||
while ((tid = *ptid) != 0)
|
||||
{
|
||||
/* Get current time. */
|
||||
struct timeval tv;
|
||||
__gettimeofday (&tv, NULL);
|
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|
||||
/* Determine relative timeout. */
|
||||
struct timespec rt;
|
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rt.tv_sec = abstime->tv_sec - tv.tv_sec;
|
||||
rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000;
|
||||
if (rt.tv_nsec < 0)
|
||||
{
|
||||
rt.tv_nsec += 1000000000;
|
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rt.tv_sec--;
|
||||
}
|
||||
/* Already timed out? */
|
||||
if (rt.tv_sec < 0)
|
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return ETIMEDOUT;
|
||||
|
||||
/* Wait until thread terminates. */
|
||||
int err = lll_futex_timed_wait (ptid, tid, &rt);
|
||||
|
||||
/* Woken due to timeout? */
|
||||
if (err == -ETIMEDOUT)
|
||||
/* Yes. */
|
||||
return ETIMEDOUT;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -23,6 +23,7 @@
|
||||
#include <time.h>
|
||||
#include <sys/param.h>
|
||||
#include <bits/pthreadtypes.h>
|
||||
#include <atomic.h>
|
||||
|
||||
#define SYS_futex 238
|
||||
#define FUTEX_WAIT 0
|
||||
@ -126,19 +127,14 @@ __lll_mutex_trylock (int *futex)
|
||||
#define lll_mutex_trylock(futex) __lll_mutex_trylock (&(futex))
|
||||
|
||||
|
||||
extern void ___lll_mutex_lock (int *, int) attribute_hidden;
|
||||
|
||||
extern void __lll_lock_wait (int *futex) attribute_hidden;
|
||||
|
||||
static inline void
|
||||
__attribute__ ((always_inline))
|
||||
__lll_mutex_lock (int *futex)
|
||||
{
|
||||
int oldval;
|
||||
int newval;
|
||||
|
||||
lll_compare_and_swap (futex, oldval, newval, "lr %2,%1; ahi %2,1");
|
||||
if (oldval > 0)
|
||||
___lll_mutex_lock (futex, newval);
|
||||
if (atomic_compare_and_exchange_bool_acq (futex, 1, 0) != 0)
|
||||
__lll_lock_wait (futex);
|
||||
}
|
||||
#define lll_mutex_lock(futex) __lll_mutex_lock (&(futex))
|
||||
|
||||
@ -146,32 +142,21 @@ static inline void
|
||||
__attribute__ ((always_inline))
|
||||
__lll_mutex_cond_lock (int *futex)
|
||||
{
|
||||
int oldval;
|
||||
int newval;
|
||||
|
||||
lll_compare_and_swap (futex, oldval, newval, "lr %2,%1; ahi %2,2");
|
||||
if (oldval > 0)
|
||||
___lll_mutex_lock (futex, newval);
|
||||
if (atomic_compare_and_exchange_bool_acq (futex, 2, 0) != 0)
|
||||
__lll_lock_wait (futex);
|
||||
}
|
||||
#define lll_mutex_cond_lock(futex) __lll_mutex_cond_lock (&(futex))
|
||||
|
||||
|
||||
extern int ___lll_mutex_timedlock (int *, const struct timespec *, int)
|
||||
attribute_hidden;
|
||||
|
||||
extern int __lll_timedlock_wait
|
||||
(int *futex, const struct timespec *) attribute_hidden;
|
||||
|
||||
static inline int
|
||||
__attribute__ ((always_inline))
|
||||
__lll_mutex_timedlock (int *futex, const struct timespec *abstime)
|
||||
{
|
||||
int oldval;
|
||||
int newval;
|
||||
int result = 0;
|
||||
|
||||
lll_compare_and_swap (futex, oldval, newval, "lr %2,%1; ahi %2,1");
|
||||
if (oldval > 0)
|
||||
result = ___lll_mutex_timedlock (futex, abstime, newval);
|
||||
|
||||
if (atomic_compare_and_exchange_bool_acq (futex, 1, 0) != 0)
|
||||
result = __lll_timedlock_wait (futex, abstime);
|
||||
return result;
|
||||
}
|
||||
#define lll_mutex_timedlock(futex, abstime) \
|
||||
@ -208,15 +193,19 @@ __lll_mutex_unlock_force (int *futex)
|
||||
|
||||
|
||||
/* We have a separate internal lock implementation which is not tied
|
||||
to binary compatibility. */
|
||||
to binary compatibility. We can use the lll_mutex_*. */
|
||||
|
||||
/* Type for lock object. */
|
||||
typedef int lll_lock_t;
|
||||
|
||||
/* Initializers for lock. */
|
||||
#define LLL_LOCK_INITIALIZER (1)
|
||||
#define LLL_LOCK_INITIALIZER_LOCKED (0)
|
||||
#define LLL_LOCK_INITIALIZER (0)
|
||||
#define LLL_LOCK_INITIALIZER_LOCKED (1)
|
||||
|
||||
#define lll_trylock(futex) lll_mutex_trylock (futex)
|
||||
#define lll_lock(futex) lll_mutex_lock (futex)
|
||||
#define lll_unlock(futex) lll_mutex_unlock (futex)
|
||||
#define lll_islocked(futex) lll_mutex_islocked (futex)
|
||||
|
||||
extern int lll_unlock_wake_cb (int *__futex) attribute_hidden;
|
||||
|
||||
@ -226,54 +215,6 @@ extern int lll_unlock_wake_cb (int *__futex) attribute_hidden;
|
||||
<0 - taken by more users */
|
||||
|
||||
|
||||
static inline int
|
||||
__attribute__ ((always_inline))
|
||||
__lll_trylock (int *futex)
|
||||
{
|
||||
unsigned int old;
|
||||
|
||||
__asm __volatile ("cs %0,%3,%1"
|
||||
: "=d" (old), "=Q" (*futex)
|
||||
: "0" (1), "d" (0), "m" (*futex) : "cc" );
|
||||
return old != 1;
|
||||
}
|
||||
#define lll_trylock(futex) __lll_trylock (&(futex))
|
||||
|
||||
|
||||
extern void ___lll_lock (int *, int) attribute_hidden;
|
||||
|
||||
static inline void
|
||||
__attribute__ ((always_inline))
|
||||
__lll_lock (int *futex)
|
||||
{
|
||||
int oldval;
|
||||
int newval;
|
||||
|
||||
lll_compare_and_swap (futex, oldval, newval, "lr %2,%1; ahi %2,-1");
|
||||
if (newval < 0)
|
||||
___lll_lock (futex, newval);
|
||||
}
|
||||
#define lll_lock(futex) __lll_lock (&(futex))
|
||||
|
||||
|
||||
static inline void
|
||||
__attribute__ ((always_inline))
|
||||
__lll_unlock (int *futex)
|
||||
{
|
||||
int oldval;
|
||||
int newval;
|
||||
|
||||
lll_compare_and_swap (futex, oldval, newval, "lhi %2,1");
|
||||
if (oldval < 0)
|
||||
lll_futex_wake (futex, 1);
|
||||
}
|
||||
#define lll_unlock(futex) __lll_unlock(&(futex))
|
||||
|
||||
|
||||
#define lll_islocked(futex) \
|
||||
(futex != 1)
|
||||
|
||||
|
||||
/* The kernel notifies a process with uses CLONE_CLEARTID via futex
|
||||
wakeup when the clone terminates. The memory location contains the
|
||||
thread ID while the clone is running and is reset to zero
|
||||
@ -289,20 +230,16 @@ __lll_wait_tid (int *ptid)
|
||||
}
|
||||
#define lll_wait_tid(tid) __lll_wait_tid(&(tid))
|
||||
|
||||
|
||||
extern int ___lll_timedwait_tid (int *, const struct timespec *)
|
||||
extern int __lll_timedwait_tid (int *, const struct timespec *)
|
||||
attribute_hidden;
|
||||
static inline int
|
||||
__attribute__ ((always_inline))
|
||||
__lll_timedwait_tid (int *ptid, const struct timespec *abstime)
|
||||
{
|
||||
if (*ptid == 0)
|
||||
return 0;
|
||||
|
||||
return ___lll_timedwait_tid (ptid, abstime);
|
||||
}
|
||||
#define lll_timedwait_tid(tid, abstime) __lll_timedwait_tid (&(tid), abstime)
|
||||
|
||||
#define lll_timedwait_tid(tid, abstime) \
|
||||
({ \
|
||||
int __res = 0; \
|
||||
if ((tid) != 0) \
|
||||
__res = __lll_timedwait_tid (&(tid), (abstime)); \
|
||||
__res; \
|
||||
})
|
||||
|
||||
/* Conditional variable handling. */
|
||||
|
||||
|
||||
@ -1,88 +0,0 @@
|
||||
/* Copyright (C) 2003 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, write to the Free
|
||||
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
||||
02111-1307 USA. */
|
||||
|
||||
#include <errno.h>
|
||||
#include <sysdep.h>
|
||||
#include <lowlevellock.h>
|
||||
|
||||
|
||||
void
|
||||
___lll_mutex_lock (futex, newval)
|
||||
int *futex;
|
||||
int newval;
|
||||
{
|
||||
int oldval;
|
||||
|
||||
do
|
||||
{
|
||||
lll_futex_wait (futex, newval);
|
||||
lll_compare_and_swap (futex, oldval, newval, "lr %2,%1; ahi %2,1");
|
||||
}
|
||||
while (oldval != 0);
|
||||
|
||||
*futex = 2;
|
||||
}
|
||||
|
||||
|
||||
int
|
||||
___lll_mutex_timedlock (futex, abstime, newval)
|
||||
int *futex;
|
||||
const struct timespec *abstime;
|
||||
int newval;
|
||||
{
|
||||
/* Reject invalid timeouts. */
|
||||
if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000)
|
||||
return EINVAL;
|
||||
|
||||
int oldval;
|
||||
do
|
||||
{
|
||||
/* Get the current time. */
|
||||
struct timeval tv;
|
||||
__gettimeofday (&tv, NULL);
|
||||
|
||||
/* Compute relative timeout. */
|
||||
struct timespec rt;
|
||||
rt.tv_sec = abstime->tv_sec - tv.tv_sec;
|
||||
rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000;
|
||||
if (rt.tv_nsec < 0)
|
||||
{
|
||||
rt.tv_nsec += 1000000000;
|
||||
--rt.tv_sec;
|
||||
}
|
||||
/* Already timed out? */
|
||||
if (rt.tv_sec < 0)
|
||||
return ETIMEDOUT;
|
||||
|
||||
/* Wait. */
|
||||
int err = lll_futex_timed_wait (futex, newval, &rt);
|
||||
|
||||
/* If timed out return with an appropriate error. */
|
||||
if (err == -ETIMEDOUT)
|
||||
return ETIMEDOUT;
|
||||
|
||||
/* XXX oldval in undefined !!! */
|
||||
lll_compare_and_swap (futex, oldval, newval, "lr %2,%1; ahi %2,1");
|
||||
}
|
||||
while (oldval != 0);
|
||||
|
||||
*futex = 2;
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -1,49 +0,0 @@
|
||||
/* Copyright (C) 2003 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, write to the Free
|
||||
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
||||
02111-1307 USA. */
|
||||
|
||||
#include <errno.h>
|
||||
#include <sysdep.h>
|
||||
#include <lowlevellock.h>
|
||||
#include <internaltypes.h>
|
||||
#include <semaphore.h>
|
||||
|
||||
#include <shlib-compat.h>
|
||||
|
||||
|
||||
int
|
||||
__new_sem_post (sem_t *sem)
|
||||
{
|
||||
int oldval;
|
||||
int newval;
|
||||
int err;
|
||||
|
||||
lll_compare_and_swap ((int *) sem, oldval, newval, "lr %2,%1; ahi %2,1");
|
||||
err = lll_futex_wake ((int *) sem, newval);
|
||||
if (err < 0)
|
||||
{
|
||||
__set_errno (-err);
|
||||
return -1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
versioned_symbol (libpthread, __new_sem_post, sem_post, GLIBC_2_1);
|
||||
#if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1)
|
||||
strong_alias (__new_sem_post, __old_sem_post)
|
||||
compat_symbol (libpthread, __old_sem_post, sem_post, GLIBC_2_0);
|
||||
#endif
|
||||
@ -1,99 +0,0 @@
|
||||
/* Copyright (C) 2003 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, write to the Free
|
||||
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
||||
02111-1307 USA. */
|
||||
|
||||
#include <errno.h>
|
||||
#include <sysdep.h>
|
||||
#include <lowlevellock.h>
|
||||
#include <internaltypes.h>
|
||||
#include <semaphore.h>
|
||||
|
||||
#include <pthreadP.h>
|
||||
#include <shlib-compat.h>
|
||||
|
||||
|
||||
int
|
||||
sem_timedwait (sem, abstime)
|
||||
sem_t *sem;
|
||||
const struct timespec *abstime;
|
||||
{
|
||||
/* First check for cancellation. */
|
||||
CANCELLATION_P (THREAD_SELF);
|
||||
|
||||
int *futex = (int *) sem;
|
||||
int oldval;
|
||||
int newval;
|
||||
int err;
|
||||
|
||||
do
|
||||
{
|
||||
/* Atomically decrement semaphore counter if it is > 0. */
|
||||
lll_compare_and_swap (futex, oldval, newval,
|
||||
"ltr %2,%1; jnp 1f; ahi %2,-1");
|
||||
/* oldval != newval if the semaphore count has been decremented. */
|
||||
if (oldval != newval)
|
||||
return 0;
|
||||
|
||||
/* Check for invalid timeout values. */
|
||||
if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000)
|
||||
{
|
||||
__set_errno (EINVAL);
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Get the current time. */
|
||||
struct timeval tv;
|
||||
(void) __gettimeofday (&tv, NULL);
|
||||
|
||||
/* Compute the relative timeout. */
|
||||
struct timespec rt;
|
||||
rt.tv_sec = abstime->tv_sec - tv.tv_sec;
|
||||
rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000;
|
||||
if (rt.tv_nsec < 0)
|
||||
{
|
||||
rt.tv_nsec += 1000000000;
|
||||
--rt.tv_sec;
|
||||
}
|
||||
/* Already timed out. */
|
||||
if (rt.tv_sec < 0)
|
||||
{
|
||||
__set_errno (ETIMEDOUT);
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Enable asynchronous cancellation. Required by the standard. */
|
||||
int oldtype = __pthread_enable_asynccancel ();
|
||||
|
||||
/* Do wait. */
|
||||
err = lll_futex_timed_wait (futex, 0, &rt);
|
||||
|
||||
/* Disable asynchronous cancellation. */
|
||||
__pthread_disable_asynccancel (oldtype);
|
||||
|
||||
/* Returned after timing out? */
|
||||
if (err == -ETIMEDOUT)
|
||||
{
|
||||
__set_errno (ETIMEDOUT);
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
while (err == 0 || err == -EWOULDBLOCK);
|
||||
|
||||
__set_errno (-err);
|
||||
return -1;
|
||||
}
|
||||
@ -1,50 +0,0 @@
|
||||
/* Copyright (C) 2003 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, write to the Free
|
||||
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
||||
02111-1307 USA. */
|
||||
|
||||
#include <errno.h>
|
||||
#include <sysdep.h>
|
||||
#include <lowlevellock.h>
|
||||
#include <internaltypes.h>
|
||||
#include <semaphore.h>
|
||||
|
||||
#include <shlib-compat.h>
|
||||
|
||||
|
||||
int
|
||||
__new_sem_trywait (sem_t *sem)
|
||||
{
|
||||
int oldval;
|
||||
int newval;
|
||||
|
||||
/* Atomically decrement sem counter if it is > 0. */
|
||||
lll_compare_and_swap ((int *) sem, oldval, newval,
|
||||
"ltr %2,%1; jnp 1f; ahi %2,-1");
|
||||
/* oldval != newval if the semaphore count has been decremented. */
|
||||
if (oldval == newval)
|
||||
{
|
||||
__set_errno (EAGAIN);
|
||||
return -1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
versioned_symbol (libpthread, __new_sem_trywait, sem_trywait, GLIBC_2_1);
|
||||
#if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1)
|
||||
strong_alias (__new_sem_trywait, __old_sem_trywait)
|
||||
compat_symbol (libpthread, __old_sem_trywait, sem_trywait, GLIBC_2_0);
|
||||
#endif
|
||||
@ -1,71 +0,0 @@
|
||||
/* Copyright (C) 2003 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, write to the Free
|
||||
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
||||
02111-1307 USA. */
|
||||
|
||||
#include <errno.h>
|
||||
#include <sysdep.h>
|
||||
#include <lowlevellock.h>
|
||||
#include <internaltypes.h>
|
||||
#include <semaphore.h>
|
||||
|
||||
#include <pthreadP.h>
|
||||
#include <shlib-compat.h>
|
||||
|
||||
|
||||
int
|
||||
__new_sem_wait (sem_t *sem)
|
||||
{
|
||||
/* First check for cancellation. */
|
||||
CANCELLATION_P (THREAD_SELF);
|
||||
|
||||
int *futex = (int *) sem;
|
||||
int err;
|
||||
|
||||
do
|
||||
{
|
||||
int oldval;
|
||||
int newval;
|
||||
|
||||
/* Atomically decrement semaphore counter if it is > 0. */
|
||||
lll_compare_and_swap (futex, oldval, newval,
|
||||
"ltr %2,%1; jnp 1f; ahi %2,-1");
|
||||
|
||||
/* oldval != newval if the semaphore count has been decremented. */
|
||||
if (oldval != newval)
|
||||
return 0;
|
||||
|
||||
/* Enable asynchronous cancellation. Required by the standard. */
|
||||
int oldtype = __pthread_enable_asynccancel ();
|
||||
|
||||
/* Do wait. */
|
||||
err = lll_futex_wait (futex, 0);
|
||||
|
||||
/* Disable asynchronous cancellation. */
|
||||
__pthread_disable_asynccancel (oldtype);
|
||||
}
|
||||
while (err == 0 || err == -EWOULDBLOCK);
|
||||
|
||||
__set_errno (-err);
|
||||
return -1;
|
||||
}
|
||||
|
||||
versioned_symbol (libpthread, __new_sem_wait, sem_wait, GLIBC_2_1);
|
||||
#if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1)
|
||||
strong_alias (__new_sem_wait, __old_sem_wait)
|
||||
compat_symbol (libpthread, __old_sem_wait, sem_wait, GLIBC_2_0);
|
||||
#endif
|
||||
@ -87,17 +87,17 @@ __lll_mutex_trylock (int *futex)
|
||||
#define lll_mutex_trylock(futex) __lll_mutex_trylock (&(futex))
|
||||
|
||||
|
||||
extern void __lll_lock_wait (int *futex, int val) attribute_hidden;
|
||||
extern void __lll_lock_wait (int *futex) attribute_hidden;
|
||||
|
||||
|
||||
static inline void
|
||||
__attribute__ ((always_inline))
|
||||
__lll_mutex_lock (int *futex)
|
||||
{
|
||||
int val = atomic_exchange_and_add (futex, 1);
|
||||
int val = atomic_compare_and_exchange_val_acq (futex, 1, 0);
|
||||
|
||||
if (__builtin_expect (val != 0, 0))
|
||||
__lll_lock_wait (futex, val);
|
||||
__lll_lock_wait (futex);
|
||||
}
|
||||
#define lll_mutex_lock(futex) __lll_mutex_lock (&(futex))
|
||||
|
||||
@ -106,18 +106,15 @@ static inline void
|
||||
__attribute__ ((always_inline))
|
||||
__lll_mutex_cond_lock (int *futex)
|
||||
{
|
||||
int val = atomic_exchange_and_add (futex, 2);
|
||||
int val = atomic_compare_and_exchange_val_acq (futex, 2, 0);
|
||||
|
||||
if (__builtin_expect (val != 0, 0))
|
||||
/* Note, the val + 1 is kind of ugly here. __lll_lock_wait will add
|
||||
1 again. But we added 2 to the futex value so this is the right
|
||||
value which will be passed to the kernel. */
|
||||
__lll_lock_wait (futex, val + 1);
|
||||
__lll_lock_wait (futex);
|
||||
}
|
||||
#define lll_mutex_cond_lock(futex) __lll_mutex_cond_lock (&(futex))
|
||||
|
||||
|
||||
extern int __lll_timedlock_wait (int *futex, int val, const struct timespec *)
|
||||
extern int __lll_timedlock_wait (int *futex, const struct timespec *)
|
||||
attribute_hidden;
|
||||
|
||||
|
||||
@ -125,12 +122,11 @@ static inline int
|
||||
__attribute__ ((always_inline))
|
||||
__lll_mutex_timedlock (int *futex, const struct timespec *abstime)
|
||||
{
|
||||
int val = atomic_exchange_and_add (futex, 1);
|
||||
int val = atomic_compare_and_exchange_val_acq (futex, 1, 0);
|
||||
int result = 0;
|
||||
|
||||
|
||||
if (__builtin_expect (val != 0, 0))
|
||||
result = __lll_timedlock_wait (futex, val, abstime);
|
||||
|
||||
result = __lll_timedlock_wait (futex, abstime);
|
||||
return result;
|
||||
}
|
||||
#define lll_mutex_timedlock(futex, abstime) \
|
||||
|
||||
@ -1,30 +0,0 @@
|
||||
/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, write to the Free
|
||||
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
||||
02111-1307 USA. */
|
||||
|
||||
/* In libc.so we do not unconditionally use the lock prefix. Only if
|
||||
the application is using threads. */
|
||||
#ifndef UP
|
||||
# define LOCK \
|
||||
cmpl $0, __libc_multiple_threads(%rip); \
|
||||
je 0f; \
|
||||
lock; \
|
||||
0:
|
||||
#endif
|
||||
|
||||
#include "lowlevelmutex.S"
|
||||
@ -26,6 +26,7 @@
|
||||
#include <sys/stat.h>
|
||||
#include <unistd.h>
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
|
||||
#include <dirstream.h>
|
||||
#include <not-cancel.h>
|
||||
|
||||
Loading…
Reference in New Issue
Block a user