layers/vk_layer_data.h

/* Copyright (c) 2015-2016 The Khronos Group Inc.
 * Copyright (c) 2015-2016 Valve Corporation
 * Copyright (c) 2015-2016 LunarG, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and/or associated documentation files (the "Materials"), to
 * deal in the Materials without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Materials, and to permit persons to whom the Materials
 * are furnished to do so, subject to the following conditions:
 *
 * The above copyright notice(s) and this permission notice shall be included
 * in all copies or substantial portions of the Materials.
 *
 * THE MATERIALS ARE 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 MATERIALS OR THE
 * USE OR OTHER DEALINGS IN THE MATERIALS
 *
 * Author: Tobin Ehlis <tobin@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