diff options
| author | Ulrich Drepper <drepper@redhat.com> | 2006-09-08 10:41:17 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2006-09-08 10:41:17 +0000 |
| commit | 346e6ad4016f3a19f71ccd0edd8a2682746d6fe7 (patch) | |
| tree | f96d1336d032a8b0d2438378e4fe621b7a5590f9 /nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S | |
| parent | 469615bdd422cec2d89a09c765a8e965faa29722 (diff) | |
| download | glibc-346e6ad4016f3a19f71ccd0edd8a2682746d6fe7.tar.gz | |
[BZ #3123]
2006-09-08 Ulrich Drepper <drepper@redhat.com>
[BZ #3123]
* sysdeps/pthread/pthread_cond_wait.c (__condvar_cleanup): Don't
increment WAKEUP_SEQ if this would increase the value beyond TOTAL_SEQ.
* sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.c: Likewise.
* sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.c: Likewise.
* sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.c: Likewise.
* Makefile (tests): Add tst-cond22.
* tst-cond22.c: New file.
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S index 699c2cb227..692e0dd670 100644 --- a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S +++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2003, 2004, 2006 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -406,10 +406,21 @@ __condvar_tw_cleanup: cmpl 20(%esp), %eax jne 3f - addl $1, wakeup_seq(%ebx) + /* We increment the woken_seq counter only if it is lower than + total_seq. If this is not the case the thread was woken and + then canceled. In this case we ignore the signal. */ + movl total_seq(%ebx), %eax + movl total_seq+4(%ebx), %edi + cmpl wakeup_seq+4(%ebx), %edi + jb 6f + ja 7f + cmpl wakeup_seq(%ebx), %eax + jbe 7f + +6: addl $1, wakeup_seq(%ebx) adcl $0, wakeup_seq+4(%ebx) - addl $1, cond_futex(%ebx) +7: addl $1, cond_futex(%ebx) addl $1, woken_seq(%ebx) adcl $0, woken_seq+4(%ebx) |