tests/live_verification/time_dynamic_loading.cpp

/*
 * Copyright (c) 2023 The Khronos Group Inc.
 * Copyright (c) 2023 Valve Corporation
 * Copyright (c) 2023 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: Charles Giessen <charles@lunarg.com>
 */

#include <vulkan/vulkan.h>

#include <chrono>
#include <iostream>
#include <vector>
#include <string>
#include <iomanip>
#include <thread>

int main() {
    // uint32_t iterations = 20;
    // std::vector<std::chrono::microseconds> samples;
    // samples.resize(iterations);
    // for (uint32_t i = 0; i < iterations; i++) {
    //     auto t1 = std::chrono::system_clock::now();
    //     uint32_t count = 0;
    //     vkEnumerateInstanceExtensionProperties(nullptr, &count, nullptr);
    //     // vkEnumerateInstanceLayerProperties(&count, nullptr);
    //     // vkEnumerateInstanceVersion(&count);
    //     auto t2 = std::chrono::system_clock::now();
    //     samples[i] = std::chrono::duration_cast<std::chrono::microseconds>(t2 - t1);
    // }
    // std::chrono::microseconds total_time{};
    // for (uint32_t i = 0; i < iterations; i++) {
    //     total_time += samples[i];
    // }
    // std::cout << "average time " << total_time.count() / iterations << " (μs)\n";
    // std::cout << std::setw(10) << "Iteration" << std::setw(12) << " Time (μs)\n";
    // for (uint32_t i = 0; i < iterations; i++) {
    //     std::cout << std::setw(10) << std::to_string(i) << std::setw(12) << samples[i].count() << "\n";
    // }

    uint32_t count = 0;
    VkInstanceCreateInfo ci{};
    VkInstance i{};
    auto res = vkCreateInstance(&ci, nullptr, &i);
    if (res != VK_SUCCESS) return -1;
    std::cout << "After called vkCreateInstance\n";
    do {
        std::cout << '\n' << "Press a key to continue...";
    } while (std::cin.get() != '\n');
    vkDestroyInstance(i, nullptr);
    std::cout << "After called vkDestroyInstance\n";
    do {
        std::cout << '\n' << "Press a key to continue...";
    } while (std::cin.get() != '\n');
}