/* 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 <sched.h> #include "pthreadP.h" #include <lowlevellock.h> int pthread_setschedprio (threadid, prio) pthread_t threadid; int prio; { 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; struct sched_param param; param.sched_priority = prio; /* We have to handle cancellation in the following code since we are locking another threads desriptor. */ pthread_cleanup_push ((void (*) (void *)) lll_unlock_wake_cb, &pd->lock); lll_lock (pd->lock); /* Try to set the scheduler information. */ if (__builtin_expect (sched_setparam (pd->tid, ¶m) == -1, 0)) result = errno; else { /* We succeeded changing the kernel information. Reflect this change in the thread descriptor. */ memcpy (&pd->schedparam, ¶m, sizeof (struct sched_param)); pd->flags |= ATTR_FLAG_SCHED_SET; } lll_unlock (pd->lock); pthread_cleanup_pop (0); return result; }