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authorUlrich Drepper <drepper@redhat.com>2003-04-05 05:21:15 +0000
committerUlrich Drepper <drepper@redhat.com>2003-04-05 05:21:15 +0000
commitb22d701bb72b928526efff83c019b912f469af72 (patch)
tree4474c99dbe6f90a380c378817307646f6f8eff5c /nptl/init.c
parent3242201746d74bfbccb8267f8b2e81a9478bf78b (diff)
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Update.
2003-04-04 Ulrich Drepper <drepper@redhat.com> * sysdeps/pthread/createthread.c (create_thread): Add some more comments explaining when to set multiple_threads and when not. * pthreadP.h: Define THREAD_ATOMIC_CMPXCHG_VAL and THREAD_ATOMIC_BIT_SET if not already defined. * sysdeps/i386/tls.h: Define THREAD_ATOMIC_CMPXCHG_VAL and THREAD_ATOMIC_BIT_SET: * sysdeps/x86_64/tls.h: Likewise. * cleanup_defer.c (_pthread_cleanup_push_defer): Rewrite to use THREAD_ATOMIC_CMPXCHG_VAL. (_pthread_cleanup_pop_restore): Likewise. * cancellation.c (__pthread_enable_asynccancel): Likewise. (__pthread_enable_asynccancel_2): Likewise. (__pthread_disable_asynccancel): Likewise. * libc-cancellation.c (__libc_enable_asynccancel): Likewise. (__libc_disable_asynccancel): Likewise. * init.c (sigcancel_handler): Likewise. * pthread_setcancelstate.c (__pthread_setcancelstate): Likewise. * pthread_setcanceltype.c (__pthread_setcanceltype): Likewise.
Diffstat (limited to 'nptl/init.c')
-rw-r--r--nptl/init.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/nptl/init.c b/nptl/init.c
index 9d557cc..7a6883f 100644
--- a/nptl/init.c
+++ b/nptl/init.c
@@ -135,20 +135,21 @@ sigcancel_handler (int sig __attribute ((unused)))
{
struct pthread *self = THREAD_SELF;
+ int oldval = THREAD_GETMEM (self, cancelhandling);
while (1)
{
/* We are canceled now. When canceled by another thread this flag
is already set but if the signal is directly send (internally or
from another process) is has to be done here. */
- int oldval = THREAD_GETMEM (self, cancelhandling);
int newval = oldval | CANCELING_BITMASK | CANCELED_BITMASK;
if (oldval == newval || (oldval & EXITING_BITMASK) != 0)
/* Already canceled or exiting. */
break;
- if (! atomic_compare_and_exchange_bool_acq (&self->cancelhandling,
- newval, oldval))
+ int curval = THREAD_ATOMIC_CMPXCHG_VAL (self, cancelhandling, newval,
+ oldval);
+ if (curval == oldval)
{
/* Set the return value. */
THREAD_SETMEM (self, result, PTHREAD_CANCELED);
@@ -160,6 +161,8 @@ sigcancel_handler (int sig __attribute ((unused)))
break;
}
+
+ oldval = curval;
}
}