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-rw-r--r--nptl/ChangeLog5
-rw-r--r--nptl/cancellation.c3
-rw-r--r--nptl/libc-cancellation.c102
-rw-r--r--nptl/sysdeps/pthread/librt-cancellation.c91
4 files changed, 12 insertions, 189 deletions
diff --git a/nptl/ChangeLog b/nptl/ChangeLog
index b83128e5af..23083611b4 100644
--- a/nptl/ChangeLog
+++ b/nptl/ChangeLog
@@ -1,5 +1,10 @@
2009-05-16 Ulrich Drepper <drepper@redhat.com>
+ * cancellation.c (__pthread_disable_asynccancel): Remove unnecessary
+ test.
+ * libc-cancellation.c: Use <nptl/cancellation.c: to define the code.
+ * sysdeps/pthread/librt-cancellation.c: Likewise.
+
[BZ #9924]
* nptl-init.c: Renamed from init.c.
* Makefile: Change all occurences of init.c to nptl-init.c.
diff --git a/nptl/cancellation.c b/nptl/cancellation.c
index 2a6f83d28a..eac7973db7 100644
--- a/nptl/cancellation.c
+++ b/nptl/cancellation.c
@@ -78,9 +78,6 @@ __pthread_disable_asynccancel (int oldtype)
{
newval = oldval & ~CANCELTYPE_BITMASK;
- if (newval == oldval)
- break;
-
int curval = THREAD_ATOMIC_CMPXCHG_VAL (self, cancelhandling, newval,
oldval);
if (__builtin_expect (curval == oldval, 1))
diff --git a/nptl/libc-cancellation.c b/nptl/libc-cancellation.c
index cada464d2b..432e1f8b6a 100644
--- a/nptl/libc-cancellation.c
+++ b/nptl/libc-cancellation.c
@@ -17,106 +17,12 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
-#include <setjmp.h>
-#include <stdlib.h>
#include "pthreadP.h"
-#include <atomic.h>
-#include <bits/libc-lock.h>
-#ifndef NOT_IN_libc
-
-/* The next two functions are similar to pthread_setcanceltype() but
- more specialized for the use in the cancelable functions like write().
- They do not need to check parameters etc. */
-int
-attribute_hidden
-__libc_enable_asynccancel (void)
-{
- struct pthread *self = THREAD_SELF;
- int oldval = THREAD_GETMEM (self, cancelhandling);
-
- while (1)
- {
- int newval = oldval | CANCELTYPE_BITMASK;
-
- if (__builtin_expect ((oldval & CANCELED_BITMASK) != 0, 0))
- {
- /* If we are already exiting or if PTHREAD_CANCEL_DISABLED,
- stop right here. */
- if ((oldval & (EXITING_BITMASK | CANCELSTATE_BITMASK)) != 0)
- break;
-
- int curval = THREAD_ATOMIC_CMPXCHG_VAL (self, cancelhandling,
- newval, oldval);
- if (__builtin_expect (curval != oldval, 0))
- {
- /* Somebody else modified the word, try again. */
- oldval = curval;
- continue;
- }
-
- THREAD_SETMEM (self, result, PTHREAD_CANCELED);
-
- __do_cancel ();
-
- /* NOTREACHED */
- }
-
- int curval = THREAD_ATOMIC_CMPXCHG_VAL (self, cancelhandling, newval,
- oldval);
- if (__builtin_expect (curval == oldval, 1))
- break;
-
- /* Prepare the next round. */
- oldval = curval;
- }
-
- return oldval;
-}
-
-
-void
-internal_function attribute_hidden
-__libc_disable_asynccancel (int oldtype)
-{
- /* If asynchronous cancellation was enabled before we do not have
- anything to do. */
- if (oldtype & CANCELTYPE_BITMASK)
- return;
-
- struct pthread *self = THREAD_SELF;
- int newval;
-
- int oldval = THREAD_GETMEM (self, cancelhandling);
-
- while (1)
- {
- newval = oldval & ~CANCELTYPE_BITMASK;
-
- if (newval == oldval)
- break;
-
- int curval = THREAD_ATOMIC_CMPXCHG_VAL (self, cancelhandling, newval,
- oldval);
- if (__builtin_expect (curval == oldval, 1))
- break;
-
- /* Prepare the next round. */
- oldval = curval;
- }
-
- /* We cannot return when we are being canceled. Upon return the
- thread might be things which would have to be undone. The
- following loop should loop until the cancellation signal is
- delivered. */
- while (__builtin_expect ((newval & (CANCELING_BITMASK | CANCELED_BITMASK))
- == CANCELING_BITMASK, 0))
- {
- lll_futex_wait (&self->cancelhandling, newval, LLL_PRIVATE);
- newval = THREAD_GETMEM (self, cancelhandling);
- }
-}
+#define __pthread_enable_asynccancel __libc_enable_asynccancel
+#define __pthread_disable_asynccancel __libc_disable_asynccancel
+#include <nptl/cancellation.c>
void
@@ -125,5 +31,3 @@ __libc_cleanup_routine (struct __pthread_cleanup_frame *f)
if (f->__do_it)
f->__cancel_routine (f->__cancel_arg);
}
-
-#endif
diff --git a/nptl/sysdeps/pthread/librt-cancellation.c b/nptl/sysdeps/pthread/librt-cancellation.c
index 753a2d831e..d9f7ad9ea3 100644
--- a/nptl/sysdeps/pthread/librt-cancellation.c
+++ b/nptl/sysdeps/pthread/librt-cancellation.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+/* Copyright (C) 2002, 2003, 2009 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -17,92 +17,9 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
-#include <setjmp.h>
-#include <signal.h>
-#include <stdlib.h>
#include "pthreadP.h"
-#include "atomic.h"
-#ifdef IS_IN_librt
-/* The next two functions are similar to pthread_setcanceltype() but
- more specialized for the use in the cancelable functions like write().
- They do not need to check parameters etc. */
-int
-attribute_hidden
-__librt_enable_asynccancel (void)
-{
- struct pthread *self = THREAD_SELF;
- int oldval = THREAD_GETMEM (self, cancelhandling);
-
- while (1)
- {
- int newval = oldval | CANCELTYPE_BITMASK;
-
- if (__builtin_expect ((oldval & CANCELED_BITMASK) != 0, 0))
- {
- /* If we are already exiting or if PTHREAD_CANCEL_DISABLED,
- stop right here. */
- if ((oldval & (EXITING_BITMASK | CANCELSTATE_BITMASK)) != 0)
- break;
-
- int curval = THREAD_ATOMIC_CMPXCHG_VAL (self, cancelhandling,
- newval, oldval);
- if (__builtin_expect (curval != oldval, 0))
- {
- /* Somebody else modified the word, try again. */
- oldval = curval;
- continue;
- }
-
- THREAD_SETMEM (self, result, PTHREAD_CANCELED);
-
- __do_cancel ();
-
- /* NOTREACHED */
- }
-
- int curval = THREAD_ATOMIC_CMPXCHG_VAL (self, cancelhandling, newval,
- oldval);
- if (__builtin_expect (curval == oldval, 1))
- break;
-
- /* Prepare the next round. */
- oldval = curval;
- }
-
- return oldval;
-}
-
-
-void
-internal_function attribute_hidden
-__librt_disable_asynccancel (int oldtype)
-{
- /* If asynchronous cancellation was enabled before we do not have
- anything to do. */
- if (oldtype & CANCELTYPE_BITMASK)
- return;
-
- struct pthread *self = THREAD_SELF;
- int oldval = THREAD_GETMEM (self, cancelhandling);
-
- while (1)
- {
- int newval = oldval & ~CANCELTYPE_BITMASK;
-
- if (newval == oldval)
- break;
-
- int curval = THREAD_ATOMIC_CMPXCHG_VAL (self, cancelhandling, newval,
- oldval);
- if (__builtin_expect (curval == oldval, 1))
- break;
-
- /* Prepare the next round. */
- oldval = curval;
- }
-}
-
-
-#endif
+#define __pthread_enable_asynccancel __librt_enable_asynccancel
+#define __pthread_disable_asynccancel __librt_disable_asynccancel
+#include <nptl/cancellation.c>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 05:27:23 +0000