1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
|
/*
* Copyright (c) 2022 The Khronos Group Inc.
* Copyright (c) 2022 Valve Corporation
* Copyright (c) 2022 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 <thread>
#include <chrono>
#include <vector>
#include <atomic>
#include "vulkan/vulkan.h"
static std::atomic_bool is_running;
void run_vk_code(int which_func) {
while (!is_running) {
// busy wait so all threads have a chance to spawn
}
while (is_running) {
switch (which_func) {
default:
case 0: {
VkInstance inst;
VkInstanceCreateInfo info{};
vkCreateInstance(&info, nullptr, &inst);
break;
}
case 1: {
uint32_t count = 0;
vkEnumerateInstanceExtensionProperties(nullptr, &count, nullptr);
std::vector<VkExtensionProperties> props(count, VkExtensionProperties{});
vkEnumerateInstanceExtensionProperties(nullptr, &count, props.data());
break;
}
case 2: {
uint32_t count = 0;
vkEnumerateInstanceLayerProperties(&count, nullptr);
std::vector<VkLayerProperties> layers(count, VkLayerProperties{});
vkEnumerateInstanceLayerProperties(&count, layers.data());
break;
}
case 3: {
uint32_t version = 0;
vkEnumerateInstanceVersion(&version);
break;
}
}
}
}
int main() {
uint32_t thread_count = 4;
is_running = false;
std::vector<std::thread> threads;
for (uint32_t i = 0; i < thread_count; i++) {
threads.emplace_back(run_vk_code, i % 4);
}
is_running = true;
std::this_thread::sleep_for(std::chrono::milliseconds(10));
is_running = false;
for (auto& t : threads) {
t.join();
}
return 0;
}
|
