Function TestMappingMultithreaded

src/Tests.cpp:7346–7508

}

static void TestMappingMultithreaded()
{
    wprintf(L"Testing mapping multithreaded...\n");

    static const uint32_t threadCount = 16;
    static const uint32_t bufferCount = 1024;
    static const uint32_t threadBufferCount = bufferCount / threadCount;

    VkResult res;
    volatile uint32_t memTypeIndex = UINT32_MAX;

    enum TEST
    {
        TEST_NORMAL,
        TEST_POOL,
        TEST_DEDICATED,
        TEST_COUNT
    };
    for(uint32_t testIndex = 0; testIndex < TEST_COUNT; ++testIndex)
    {
        VmaPool pool = nullptr;
        if(testIndex == TEST_POOL)
        {
            TEST(memTypeIndex != UINT32_MAX);
            VmaPoolCreateInfo poolInfo = {};
            poolInfo.memoryTypeIndex = memTypeIndex;
            res = vmaCreatePool(g_hAllocator, &poolInfo, &pool);
            TEST(res == VK_SUCCESS);
        }

        VkBufferCreateInfo bufCreateInfo = { VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO };
        bufCreateInfo.size = 0x10000;
        bufCreateInfo.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT;

        VmaAllocationCreateInfo allocCreateInfo = {};
        allocCreateInfo.usage = VMA_MEMORY_USAGE_AUTO;
        allocCreateInfo.flags = VMA_ALLOCATION_CREATE_HOST_ACCESS_RANDOM_BIT;
        allocCreateInfo.pool = pool;
        if(testIndex == TEST_DEDICATED)
            allocCreateInfo.flags |= VMA_ALLOCATION_CREATE_DEDICATED_MEMORY_BIT;

        std::thread threads[threadCount];
        for(uint32_t threadIndex = 0; threadIndex < threadCount; ++threadIndex)
        {
            threads[threadIndex] = std::thread([=, &memTypeIndex](){
                // ======== THREAD FUNCTION ========

                RandomNumberGenerator rand{threadIndex};

                enum class MODE
                {
                    // Don't map this buffer at all.
                    DONT_MAP,
                    // Map and quickly unmap.
                    MAP_FOR_MOMENT,
                    // Map and unmap before destruction.
                    MAP_FOR_LONGER,
                    // Map two times. Quickly unmap, second unmap before destruction.