diff options
| author | Kenneth R Westerback <krw@cvs.openbsd.org> | 2005-10-30 02:45:10 +0000 |
|---|---|---|
| committer | Kenneth R Westerback <krw@cvs.openbsd.org> | 2005-10-30 02:45:10 +0000 |
| commit | dec824965a7de11d9973b93c5288156da4541f74 (patch) | |
| tree | e0f449d66b6c8931e3de8741e9dec78c8c773aaa /lib/libpthread | |
| parent | a88be7dca6d06ec3b589cea5315442ba2ae49af0 (diff) | |
Don't use TAILQ_NEXT() on an element that has been removed. Similar to
otto@'s diff for uvm_aobj.c.
Identical to a diff canacar@ developed independantly.
ok brad@ 'looks correct' fgsch@
Diffstat (limited to 'lib/libpthread')
| -rw-r--r-- | lib/libpthread/uthread/uthread_kern.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/lib/libpthread/uthread/uthread_kern.c b/lib/libpthread/uthread/uthread_kern.c index 30a5a58d697..0210a4b3ecf 100644 --- a/lib/libpthread/uthread/uthread_kern.c +++ b/lib/libpthread/uthread/uthread_kern.c @@ -1,4 +1,4 @@ -/* $OpenBSD: uthread_kern.c,v 1.30 2005/01/28 20:35:49 marc Exp $ */ +/* $OpenBSD: uthread_kern.c,v 1.31 2005/10/30 02:45:09 krw Exp $ */ /* * Copyright (c) 1995-1998 John Birrell <jb@cimlogic.com.au> * All rights reserved. @@ -589,7 +589,7 @@ _thread_kern_poll(int wait_reqd) int kern_pipe_added = 0; int nfds = 0; int timeout_ms = 0; - struct pthread *pthread; + struct pthread *pthread, *next; struct timespec ts; struct timeval tv; @@ -670,7 +670,8 @@ _thread_kern_poll(int wait_reqd) } PTHREAD_WAITQ_SETACTIVE(); - TAILQ_FOREACH(pthread, &_workq, qe) { + for (pthread = TAILQ_FIRST(&_workq); pthread != NULL; pthread = next) { + next = TAILQ_NEXT(pthread, qe); switch (pthread->state) { case PS_SPINBLOCK: /* @@ -782,7 +783,9 @@ _thread_kern_poll(int wait_reqd) * _poll syscall: */ PTHREAD_WAITQ_SETACTIVE(); - TAILQ_FOREACH(pthread, &_workq, qe) { + for (pthread = TAILQ_FIRST(&_workq); pthread != NULL; + pthread = next) { + next = TAILQ_NEXT(pthread, qe); switch (pthread->state) { case PS_SPINBLOCK: /* @@ -876,7 +879,9 @@ _thread_kern_poll(int wait_reqd) * that is now available. */ PTHREAD_WAITQ_SETACTIVE(); - TAILQ_FOREACH(pthread, &_workq, qe) { + for (pthread = TAILQ_FIRST(&_workq); pthread != NULL; + pthread = next) { + next = TAILQ_NEXT(pthread, qe); if (pthread->state == PS_SPINBLOCK) { /* * If the lock is available, let the thread run. |