diff options
| author | Ulrich Drepper <drepper@redhat.com> | 2003-02-16 10:57:38 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2003-02-16 10:57:38 +0000 |
| commit | 0a37669aa5d98875e783df75681f035a905b7f31 (patch) | |
| tree | 611caab21da3070beafe7c4739c2fae616321f04 /nptl/pthread_mutex_trylock.c | |
| parent | 1564916ab9ef4e2ce673cd5fb3123c067e4a787d (diff) | |
Update.
* tst-rwlock6.c: More pthread_rwlock_timedwrlock and
pthread_rwlock_timedrdlock tests.
* tst-rwlock7.c: More pthread_rwlock_timedwrlock tests.
* sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedrdlock.S:
Check for invalid tv_nsec field.
* sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedwrlock.S:
Likewise.
* pthread_mutex_trylock.c (__pthread_mutex_trylock): Protect
recursive mutex of overflow.
* tst-attr1.c (do_test): Add test for pthread_mutexattr_setpshared.
Diffstat (limited to 'nptl/pthread_mutex_trylock.c')
| -rw-r--r-- | nptl/pthread_mutex_trylock.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/nptl/pthread_mutex_trylock.c b/nptl/pthread_mutex_trylock.c index aae506739f..394a9cba9b 100644 --- a/nptl/pthread_mutex_trylock.c +++ b/nptl/pthread_mutex_trylock.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2002 Free Software Foundation, Inc. +/* 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. @@ -36,6 +36,10 @@ __pthread_mutex_trylock (mutex) if (mutex->__data.__owner == pd) { /* Just bump the counter. */ + if (__builtin_expect (mutex->__data.__count + 1 == 0, 0)) + /* Overflow of the counter. */ + return EAGAIN; + ++mutex->__data.__count; return 0; } |