array-impl.cpp

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/*
 *  This file is part of the gobelijn software.
 *  Gobelijn is free software: you can redistribute it and/or modify it
 *  under the terms of the GNU General Public License as published by the
 *  Free Software Foundation, either version 3 of the License, or any later
 *  version. Gobelijn 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 General Public License for details. You should have received
 *  a copy of the GNU General Public License along with the software. If not,
 *  see <http://www.gnu.org/licenses/>.
 *
 *  Copyright 2016, Jan Broeckhove.
 */
#include "MemoryPool.h"

namespace Pimpl {
struct MemoryPool::MemoryPoolImpl
{
        MemoryPoolImpl(char* string, int i) : pointer(string), allocatedCount(static_cast<size_t>(i)) {}
        char* pointer;
        size_t allocatedCount;
};

MemoryPool::MemoryPool(size_t capacity) : m_impl(new MemoryPoolImpl(new char[capacity], 0)) {}

MemoryPool::~MemoryPool()
{
        // Erase the entire memory pool in one fell swoop.
        delete[] m_impl->pointer;
}

char* MemoryPool::AllocateMemory(size_t size)
{
        // Allocate memory by incrementing a pointer.
        char* result = m_impl->pointer + m_impl->allocatedCount;
        m_impl->allocatedCount += size;
        return result;
}
} // namespace Pimpl