diff options
Diffstat (limited to 'libpthread/nptl/pthread_setschedparam.c')
-rw-r--r-- | libpthread/nptl/pthread_setschedparam.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/libpthread/nptl/pthread_setschedparam.c b/libpthread/nptl/pthread_setschedparam.c new file mode 100644 index 000000000..55dfefc52 --- /dev/null +++ b/libpthread/nptl/pthread_setschedparam.c @@ -0,0 +1,61 @@ +/* Copyright (C) 2002, 2003, 2004 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); + + /* 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, param, sizeof (struct sched_param)); + pd->flags |= ATTR_FLAG_SCHED_SET | ATTR_FLAG_POLICY_SET; + } + + lll_unlock (pd->lock); + + return result; +} +strong_alias (__pthread_setschedparam, pthread_setschedparam) |