LockManager.cc

/*
 * Copyright (c) 2008-2014, Pedigree Developers
 *
 * Please see the CONTRIB file in the root of the source tree for a full
 * list of contributors.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
 
#include "pedigree/kernel/Log.h"
#include "pedigree/kernel/process/LockManager.h"
#include "pedigree/kernel/utilities/new"
 
class Semaphore;
 
LockManager::LockManager() : m_Stack(32) {
  m_Stack.clear();
}
 
LockManager::~LockManager() {}
 
void LockManager::acquired(Semaphore& sem) {
  m_Stack.pushBack(&sem);
}
 
void LockManager::released(Semaphore& sem) {
  Semaphore* pPopped = m_Stack.popBack();
  if (pPopped != &sem) {
    m_Stack.pushBack(pPopped);
    FATAL("Lock release out of order.");
  }
}