// lock.cpp
//
// Copyright (c) 2003 Philip Romanik, Amy Muntz
//
// Permission to use, copy, modify, distribute, and sell this software and
// its documentation for any purpose is hereby granted without fee, provided
// that (i) the above copyright notices and this permission notice appear in
// all copies of the software and related documentation, and (ii) the names
// of Philip Romanik and Amy Muntz may not be used in any advertising or
// publicity relating to the software without the specific, prior written
// permission of Philip Romanik and Amy Muntz.
//
// Use of this software and/or its documentation will be deemed to be
// acceptance of these terms.
//
// THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
// EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
// WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
//
// IN NO EVENT SHALL PHILIP ROMANIK OR AMY MUNTZ BE LIABLE FOR
// ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
// OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
// WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
// LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
// OF THIS SOFTWARE.
//
//
// pthread locking

#include "unix/lock.h"


// Ruler
//       1         2         3         4         5         6    6
//345678901234567890123456789012345678901234567890123456789012345



// **********************
// *                    *
// *  apMutexAttribute  *
// *                    *
// **********************

apMutexAttribute* apMutexAttribute::sOnly_ = 0;

apMutexAttribute& apMutexAttribute::gOnly ()
{
  if (!sOnly_)
    sOnly_ = new apMutexAttribute ();
  return *sOnly_;
}

apMutexAttribute::apMutexAttribute ()
{ 
  pthread_mutexattr_init (&attr_);
  pthread_mutexattr_settype (value(), PTHREAD_MUTEX_RECURSIVE);
}


apMutexAttribute::~apMutexAttribute ()
{ pthread_mutexattr_destroy (&attr_);}