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-rw-r--r--libpthread/nptl/pthread_setschedparam.c74
1 files changed, 74 insertions, 0 deletions
diff --git a/libpthread/nptl/pthread_setschedparam.c b/libpthread/nptl/pthread_setschedparam.c
new file mode 100644
index 000000000..9b33b3e3f
--- /dev/null
+++ b/libpthread/nptl/pthread_setschedparam.c
@@ -0,0 +1,74 @@
+/* Copyright (C) 2002, 2003, 2004, 2006, 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <errno.h>
+#include <sched.h>
+#include <string.h>
+#include "pthreadP.h"
+#include <lowlevellock.h>
+
+
+int
+__pthread_setschedparam (
+ pthread_t threadid,
+ int policy,
+ const struct sched_param *param)
+{
+ struct pthread *pd = (struct pthread *) threadid;
+
+ /* Make sure the descriptor is valid. */
+ if (INVALID_TD_P (pd))
+ /* Not a valid thread handle. */
+ return ESRCH;
+
+ int result = 0;
+
+ lll_lock (pd->lock, LLL_PRIVATE);
+
+ 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))
+ result = errno;
+ else
+ {
+ /* We succeeded changing the kernel information. Reflect this
+ change in the thread descriptor. */
+ pd->schedpolicy = policy;
+ memcpy (&pd->schedparam, orig_param, sizeof (struct sched_param));
+ pd->flags |= ATTR_FLAG_SCHED_SET | ATTR_FLAG_POLICY_SET;
+ }
+
+ lll_unlock (pd->lock, LLL_PRIVATE);
+
+ return result;
+}
+strong_alias (__pthread_setschedparam, pthread_setschedparam)