Subversion Repositories openrisc

/* Copyright (C) 2005 Free Software Foundation, Inc.

   Contributed by Richard Henderson <rth@redhat.com>.

   This file is part of the GNU OpenMP Library (libgomp).

   Libgomp 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.

   Libgomp 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 libgomp; see the file COPYING.LIB.  If not, write to the

   Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,

   MA 02110-1301, USA.  */

/* As a special exception, if you link this library with other files, some

   of which are compiled with GCC, to produce an executable, this library

   does not by itself cause the resulting executable to be covered by the

   GNU General Public License.  This exception does not however invalidate

   any other reasons why the executable file might be covered by the GNU

   General Public License.  */

/* This is the default PTHREADS implementation of the public OpenMP

   locking primitives.

   Because OpenMP uses different entry points for normal and recursive

   locks, and pthreads uses only one entry point, a system may be able

   to do better and streamline the locking as well as reduce the size

   of the types exported.  */

/* We need Unix98 extensions to get recursive locks.  On Tru64 UNIX V4.0F,

   the declarations are available without _XOPEN_SOURCE, which actually

   breaks compilation.  */

#ifndef __osf__

#define _XOPEN_SOURCE 500

#endif

#include "libgomp.h"

void

omp_init_lock (omp_lock_t *lock)

{

  pthread_mutex_init (lock, NULL);

}

void

omp_destroy_lock (omp_lock_t *lock)

{

  pthread_mutex_destroy (lock);

}

void

omp_set_lock (omp_lock_t *lock)

{

  pthread_mutex_lock (lock);

}

void

omp_unset_lock (omp_lock_t *lock)

{

  pthread_mutex_unlock (lock);

}

int

omp_test_lock (omp_lock_t *lock)

{

  return pthread_mutex_trylock (lock) == 0;

}

void

omp_init_nest_lock (omp_nest_lock_t *lock)

{

  pthread_mutexattr_t attr;

  pthread_mutexattr_init (&attr);

  pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_RECURSIVE);

  pthread_mutex_init (&lock->lock, &attr);

  lock->count = 0;

  pthread_mutexattr_destroy (&attr);

}

void

omp_destroy_nest_lock (omp_nest_lock_t *lock)

{

  pthread_mutex_destroy (&lock->lock);

}

void

omp_set_nest_lock (omp_nest_lock_t *lock)

{

  pthread_mutex_lock (&lock->lock);

  lock->count++;

}

void

omp_unset_nest_lock (omp_nest_lock_t *lock)

{

  lock->count--;

  pthread_mutex_unlock (&lock->lock);

}

int

omp_test_nest_lock (omp_nest_lock_t *lock)

{

  if (pthread_mutex_trylock (&lock->lock) == 0)

    return ++lock->count;

  return 0;

}

ialias (omp_init_lock)

ialias (omp_init_nest_lock)

ialias (omp_destroy_lock)

ialias (omp_destroy_nest_lock)

ialias (omp_set_lock)

ialias (omp_set_nest_lock)

ialias (omp_unset_lock)

ialias (omp_unset_nest_lock)

ialias (omp_test_lock)

ialias (omp_test_nest_lock)