diff options
Diffstat (limited to 'libpthread/nptl/pthread_setschedprio.c')
| -rw-r--r-- | libpthread/nptl/pthread_setschedprio.c | 60 | 
1 files changed, 60 insertions, 0 deletions
diff --git a/libpthread/nptl/pthread_setschedprio.c b/libpthread/nptl/pthread_setschedprio.c new file mode 100644 index 000000000..e7ea4b76f --- /dev/null +++ b/libpthread/nptl/pthread_setschedprio.c @@ -0,0 +1,60 @@ +/* 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; + +  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); + +  return result; +}  | 
