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/process/LockManager.h"
#include "pedigree/kernel/Log.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.");
    }
}