layers/vk_layer_data.h

/*
 * Vulkan
 *
 * Copyright (C) 2014 LunarG, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 * Authors:
 *   Courtney Goeltzenleuchter <courtney@lunarg.com>
 */

#ifndef LAYER_DATA_H
#define LAYER_DATA_H

#include <unordered_map>
#include "vk_layer_table.h"

template<typename DATA_T>
DATA_T *get_my_data_ptr(void *data_key,
                        std::unordered_map<void *, DATA_T*> &layer_data_map)
{
    DATA_T *debug_data;
    typename std::unordered_map<void *, DATA_T *>::const_iterator got;

    /* TODO: We probably should lock here, or have caller lock */
    got = layer_data_map.find(data_key);

    if ( got == layer_data_map.end() ) {
        debug_data = new DATA_T;
        layer_data_map[(void *) data_key] = debug_data;
    } else {
        debug_data = got->second;
    }

    return debug_data;
}

#endif // LAYER_DATA_H