diff options
Diffstat (limited to 'nptl/pthread_setschedparam.c')
| -rw-r--r-- | nptl/pthread_setschedparam.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/nptl/pthread_setschedparam.c b/nptl/pthread_setschedparam.c index 5889cc9..30ac6b3 100644 --- a/nptl/pthread_setschedparam.c +++ b/nptl/pthread_setschedparam.c @@ -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. @@ -45,6 +45,19 @@ __pthread_setschedparam (threadid, policy, param) lll_lock (pd->lock); + struct sched_param p; + const struct sched_param *orig_param = param; + + /* If the thread should have higher priority because of some + PTHREAD_PRIO_PROTECT mutexes it holds, adjust the priority. */ + if (__builtin_expect (pd->tpp != NULL, 0) + && pd->tpp->priomax > param->sched_priority) + { + p = *param; + p.sched_priority = pd->tpp->priomax; + param = &p; + } + /* Try to set the scheduler information. */ if (__builtin_expect (__sched_setscheduler (pd->tid, policy, param) == -1, 0)) @@ -54,7 +67,7 @@ __pthread_setschedparam (threadid, policy, param) /* We succeeded changing the kernel information. Reflect this change in the thread descriptor. */ pd->schedpolicy = policy; - memcpy (&pd->schedparam, param, sizeof (struct sched_param)); + memcpy (&pd->schedparam, orig_param, sizeof (struct sched_param)); pd->flags |= ATTR_FLAG_SCHED_SET | ATTR_FLAG_POLICY_SET; } |