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Update.
2003-03-03 Martin Schwidefsky <schwidefsky@de.ibm.com> * atomic.h (atomic_exchange_and_add): Return newval, not oldval. * sysdeps/pthread/pthread_cond_timedwait.c (__pthread_cond_timedwait): Fix handling of cancellation and failing pthread_mutex_unlock call. * sysdeps/pthread/pthread_cond_wait.c (__condvar_cleanup): Likewise. (__pthread_cond_wait): Likewise. * sysdeps/pthread/pthread_rwlock_timedrdlock.c (pthread_rwlock_timedrdlock): Fix clobber of result variable by lll_futex_timed_wait call. * sysdeps/pthread/pthread_rwlock_timedwrlock.c (pthread_rwlock_timedwrlock): Likewise. * sysdeps/unix/sysv/linux/s390/libc-lowlevellock.c (___lll_lock): Don't define lll_unlock_wake_cb and ___lll_timedwait_tid in libc.so. * sysdeps/unix/sysv/linux/s390/lowlevellock.c: Remove XXX comments. * sysdeps/unix/sysv/linux/s390/sem_post.c (__new_sem_post): Fix check of lll_futex_wake return value.
This commit is contained in:
Ulrich Drepper
parent
625f22fc7f
commit
7ce5c1640c
@ -1,3 +1,25 @@
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2003-03-03 Martin Schwidefsky <schwidefsky@de.ibm.com>
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* atomic.h (atomic_exchange_and_add): Return newval, not oldval.
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* sysdeps/pthread/pthread_cond_timedwait.c (__pthread_cond_timedwait):
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Fix handling of cancellation and failing pthread_mutex_unlock call.
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* sysdeps/pthread/pthread_cond_wait.c (__condvar_cleanup): Likewise.
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(__pthread_cond_wait): Likewise.
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* sysdeps/pthread/pthread_rwlock_timedrdlock.c
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(pthread_rwlock_timedrdlock): Fix clobber of result variable by
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lll_futex_timed_wait call.
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* sysdeps/pthread/pthread_rwlock_timedwrlock.c
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(pthread_rwlock_timedwrlock): Likewise.
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* sysdeps/unix/sysv/linux/s390/libc-lowlevellock.c (___lll_lock):
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Don't define lll_unlock_wake_cb and ___lll_timedwait_tid in libc.so.
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* sysdeps/unix/sysv/linux/s390/lowlevellock.c: Remove XXX comments.
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* sysdeps/unix/sysv/linux/s390/sem_post.c (__new_sem_post): Fix
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check of lll_futex_wake return value.
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2003-03-03 Roland McGrath <roland@redhat.com>
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* forward.c: Fix typo in __pthread_attr_init_2_0 compat_symbol decl.
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@ -60,7 +60,7 @@
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while (atomic_compare_and_exchange_acq (__memp, __oldval + __value, \
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__oldval)); \
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\
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__oldval; })
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__oldval + __value; })
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#endif
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@ -31,6 +31,12 @@
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extern void __condvar_cleanup (void *arg)
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__attribute__ ((visibility ("hidden")));
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struct _condvar_cleanup_buffer
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{
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int oldtype;
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pthread_cond_t *cond;
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pthread_mutex_t *mutex;
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};
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int
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__pthread_cond_timedwait (cond, mutex, abstime)
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@ -39,6 +45,7 @@ __pthread_cond_timedwait (cond, mutex, abstime)
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const struct timespec *abstime;
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{
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struct _pthread_cleanup_buffer buffer;
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struct _condvar_cleanup_buffer cbuffer;
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int result = 0;
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/* Catch invalid parameters. */
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@ -54,9 +61,13 @@ __pthread_cond_timedwait (cond, mutex, abstime)
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/* We have one new user of the condvar. */
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++cond->__data.__total_seq;
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/* Prepare structure passed to cancellation handler. */
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cbuffer.cond = cond;
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cbuffer.mutex = mutex;
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/* Before we block we enable cancellation. Therefore we have to
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install a cancellation handler. */
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__pthread_cleanup_push (&buffer, __condvar_cleanup, cond);
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__pthread_cleanup_push (&buffer, __condvar_cleanup, &cbuffer);
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/* The current values of the wakeup counter. The "woken" counter
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must exceed this value. */
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@ -76,6 +87,8 @@ __pthread_cond_timedwait (cond, mutex, abstime)
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while (1)
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{
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int err;
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/* Get the current time. So far we support only one clock. */
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struct timeval tv;
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(void) gettimeofday (&tv, NULL);
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@ -104,14 +117,14 @@ __pthread_cond_timedwait (cond, mutex, abstime)
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lll_mutex_unlock (cond->__data.__lock);
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/* Enable asynchronous cancellation. Required by the standard. */
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int oldtype = __pthread_enable_asynccancel ();
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cbuffer.oldtype = __pthread_enable_asynccancel ();
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/* Wait until woken by signal or broadcast. Note that we
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truncate the 'val' value to 32 bits. */
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result = lll_futex_timed_wait (futex, (unsigned int) val, &rt);
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err = lll_futex_timed_wait (futex, (unsigned int) val, &rt);
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/* Disable asynchronous cancellation. */
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__pthread_disable_asynccancel (oldtype);
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__pthread_disable_asynccancel (cbuffer.oldtype);
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/* We are going to look at shared data again, so get the lock. */
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lll_mutex_lock(cond->__data.__lock);
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@ -123,7 +136,7 @@ __pthread_cond_timedwait (cond, mutex, abstime)
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break;
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/* Not woken yet. Maybe the time expired? */
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if (result == -ETIMEDOUT)
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if (err == -ETIMEDOUT)
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{
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/* Yep. Adjust the counters. */
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++cond->__data.__wakeup_seq;
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@ -27,22 +27,35 @@
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#include <shlib-compat.h>
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struct _condvar_cleanup_buffer
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{
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int oldtype;
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pthread_cond_t *cond;
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pthread_mutex_t *mutex;
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};
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void
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__attribute__ ((visibility ("hidden")))
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__condvar_cleanup (void *arg)
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{
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pthread_cond_t *cond = (pthread_cond_t *) arg;
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struct _condvar_cleanup_buffer *cbuffer =
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(struct _condvar_cleanup_buffer *) arg;
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/* We are going to modify shared data. */
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lll_mutex_lock (cond->__data.__lock);
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lll_mutex_lock (cbuffer->cond->__data.__lock);
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/* This thread is not waiting anymore. Adjust the sequence counters
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appropriately. */
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++cond->__data.__wakeup_seq;
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++cond->__data.__woken_seq;
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++cbuffer->cond->__data.__wakeup_seq;
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++cbuffer->cond->__data.__woken_seq;
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/* We are done. */
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lll_mutex_unlock (cond->__data.__lock);
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lll_mutex_unlock (cbuffer->cond->__data.__lock);
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/* Get the mutex before returning unless asynchronous cancellation
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is in effect. */
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if (!(cbuffer->oldtype & CANCELTYPE_BITMASK))
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__pthread_mutex_lock_internal (cbuffer->mutex);
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}
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@ -52,19 +65,30 @@ __pthread_cond_wait (cond, mutex)
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pthread_mutex_t *mutex;
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{
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struct _pthread_cleanup_buffer buffer;
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struct _condvar_cleanup_buffer cbuffer;
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int err;
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/* Make sure we are along. */
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lll_mutex_lock (cond->__data.__lock);
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/* Now we can release the mutex. */
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__pthread_mutex_unlock_internal (mutex);
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err = __pthread_mutex_unlock_internal (mutex);
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if (err)
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{
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lll_mutex_unlock (cond->__data.__lock);
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return err;
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}
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/* We have one new user of the condvar. */
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++cond->__data.__total_seq;
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/* Prepare structure passed to cancellation handler. */
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cbuffer.cond = cond;
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cbuffer.mutex = mutex;
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/* Before we block we enable cancellation. Therefore we have to
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install a cancellation handler. */
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__pthread_cleanup_push (&buffer, __condvar_cleanup, cond);
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__pthread_cleanup_push (&buffer, __condvar_cleanup, &cbuffer);
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/* The current values of the wakeup counter. The "woken" counter
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must exceed this value. */
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@ -88,14 +112,14 @@ __pthread_cond_wait (cond, mutex)
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lll_mutex_unlock (cond->__data.__lock);
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/* Enable asynchronous cancellation. Required by the standard. */
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int oldtype = __pthread_enable_asynccancel ();
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cbuffer.oldtype = __pthread_enable_asynccancel ();
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/* Wait until woken by signal or broadcast. Note that we
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truncate the 'val' value to 32 bits. */
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lll_futex_wait (futex, (unsigned int) val);
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/* Disable asynchronous cancellation. */
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__pthread_disable_asynccancel (oldtype);
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__pthread_disable_asynccancel (cbuffer.oldtype);
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/* We are going to look at shared data again, so get the lock. */
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lll_mutex_lock(cond->__data.__lock);
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@ -37,6 +37,8 @@ pthread_rwlock_timedrdlock (rwlock, abstime)
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while (1)
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{
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int err;
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/* Get the rwlock if there is no writer... */
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if (rwlock->__data.__writer == 0
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/* ...and if either no writer is waiting or we prefer readers. */
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@ -111,14 +113,14 @@ pthread_rwlock_timedrdlock (rwlock, abstime)
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lll_mutex_unlock (rwlock->__data.__lock);
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/* Wait for the writer to finish. */
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result = lll_futex_timed_wait (&rwlock->__data.__readers_wakeup,
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waitval, &rt);
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err = lll_futex_timed_wait (&rwlock->__data.__readers_wakeup,
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waitval, &rt);
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/* Get the lock. */
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lll_mutex_lock (rwlock->__data.__lock);
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/* Did the futex call time out? */
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if (result == -ETIMEDOUT)
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if (err == -ETIMEDOUT)
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{
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/* Yep, report it. */
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result = ETIMEDOUT;
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@ -17,5 +17,26 @@
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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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/* No difference to lowlevellock.c */
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#include "lowlevellock.c"
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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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hidden_proto (___lll_lock)
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@ -42,7 +42,6 @@ ___lll_lock (futex, newval)
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hidden_proto (___lll_lock)
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/* XXX Should not be in libc.so */
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int
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lll_unlock_wake_cb (futex)
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int *futex;
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@ -58,7 +57,6 @@ lll_unlock_wake_cb (futex)
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hidden_proto (lll_unlock_wake_cb)
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/* XXX Should not be in libc.so */
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int
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___lll_timedwait_tid (ptid, abstime)
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int *ptid;
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@ -34,7 +34,7 @@ __new_sem_post (sem_t *sem)
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lll_compare_and_swap ((int *) sem, oldval, newval, "lr %2,%1; ahi %2,1");
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err = lll_futex_wake(((int *) sem), newval);
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if (err != 0)
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if (err < 0)
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{
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__set_errno(-err);
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return -1;
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6
po/sv.po
6
po/sv.po
@ -1,13 +1,13 @@
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# GNU libc message catalog for swedish
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# Copyright © 1996, 1998, 2001, 2002, 2003 Free Software Foundation, Inc.
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# Jan Djärv <jan.h.d@swipnet.se>, 1996, 1998, 2001, 2002, 2003.
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# Revision: 1.44
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# Revision: 1.45
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#
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msgid ""
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msgstr ""
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"Project-Id-Version: libc 2.3.2\n"
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"POT-Creation-Date: 2003-02-22 15:34-0800\n"
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"PO-Revision-Date: 2003-03-03 19:14+0100\n"
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"PO-Revision-Date: 2003-03-03 21:11+0100\n"
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"Last-Translator: Jan Djärv <jan.h.d@swipnet.se>\n"
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"Language-Team: Swedish <sv@li.org>\n"
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"MIME-Version: 1.0\n"
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@ -4714,7 +4714,7 @@ msgid ""
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"Group Members :\n"
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msgstr ""
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"\n"
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"Guppmedlemmar:\n"
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"Gruppmedlemmar:\n"
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#: nis/nis_print.c:266
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#, c-format
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