| 1 | /* |
| 2 | * Copyright (c) Meta Platforms, Inc. and affiliates. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * This source code is licensed under both the BSD-style license (found in the |
| 6 | * LICENSE file in the root directory of this source tree) and the GPLv2 (found |
| 7 | * in the COPYING file in the root directory of this source tree). |
| 8 | */ |
| 9 | #include "utils/ThreadPool.h" |
| 10 | |
| 11 | #include <gtest/gtest.h> |
| 12 | #include <atomic> |
| 13 | #include <iostream> |
| 14 | #include <thread> |
| 15 | #include <vector> |
| 16 | |
| 17 | using namespace pzstd; |
| 18 | |
| 19 | TEST(ThreadPool, Ordering) { |
| 20 | std::vector<int> results; |
| 21 | |
| 22 | { |
| 23 | ThreadPool executor(1); |
| 24 | for (int i = 0; i < 10; ++i) { |
| 25 | executor.add([ &results, i ] { results.push_back(i); }); |
| 26 | } |
| 27 | } |
| 28 | |
| 29 | for (int i = 0; i < 10; ++i) { |
| 30 | EXPECT_EQ(i, results[i]); |
| 31 | } |
| 32 | } |
| 33 | |
| 34 | TEST(ThreadPool, AllJobsFinished) { |
| 35 | std::atomic<unsigned> numFinished{0}; |
| 36 | std::atomic<bool> start{false}; |
| 37 | { |
| 38 | std::cerr << "Creating executor" << std::endl; |
| 39 | ThreadPool executor(5); |
| 40 | for (int i = 0; i < 10; ++i) { |
| 41 | executor.add([ &numFinished, &start ] { |
| 42 | while (!start.load()) { |
| 43 | std::this_thread::yield(); |
| 44 | } |
| 45 | ++numFinished; |
| 46 | }); |
| 47 | } |
| 48 | std::cerr << "Starting" << std::endl; |
| 49 | start.store(true); |
| 50 | std::cerr << "Finishing" << std::endl; |
| 51 | } |
| 52 | EXPECT_EQ(10, numFinished.load()); |
| 53 | } |
| 54 | |
| 55 | TEST(ThreadPool, AddJobWhileJoining) { |
| 56 | std::atomic<bool> done{false}; |
| 57 | { |
| 58 | ThreadPool executor(1); |
| 59 | executor.add([&executor, &done] { |
| 60 | while (!done.load()) { |
| 61 | std::this_thread::yield(); |
| 62 | } |
| 63 | // Sleep for a second to be sure that we are joining |
| 64 | std::this_thread::sleep_for(std::chrono::seconds(1)); |
| 65 | executor.add([] { |
| 66 | EXPECT_TRUE(false); |
| 67 | }); |
| 68 | }); |
| 69 | done.store(true); |
| 70 | } |
| 71 | } |