1 /*
2 * Copyright (C) 2018 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <CpuExecutor.h>
18 #include <gtest/gtest.h>
19 #include <omp.h>
20 #include <unistd.h>
21
22 #include <algorithm>
23 #include <memory>
24 #include <random>
25 #include <thread>
26 #include <vector>
27
28 namespace {
29
30 class OpenmpSettingsTest : public ::testing::Test {
31 protected:
SetUp()32 virtual void SetUp() override {
33 const int blocktimeInitial = kmp_get_blocktime();
34 ASSERT_EQ(blocktimeInitial, kOpenmpDefaultBlockTime);
35 }
TearDown()36 virtual void TearDown() override {
37 const int blocktimeRestored = kmp_get_blocktime();
38 ASSERT_EQ(blocktimeRestored, kOpenmpDefaultBlockTime);
39 }
40 static const int kOpenmpDefaultBlockTime;
41 static const int kPreferredBlockTime;
42 };
43
44 const int OpenmpSettingsTest::kOpenmpDefaultBlockTime = 200;
45 const int OpenmpSettingsTest::kPreferredBlockTime = 20;
46
47 using ::android::nn::ScopedOpenmpSettings;
48
TEST_F(OpenmpSettingsTest,TestkPreferredBlockTime)49 TEST_F(OpenmpSettingsTest, TestkPreferredBlockTime) {
50 ScopedOpenmpSettings s;
51 const int blocktimeSet = kmp_get_blocktime();
52 ASSERT_EQ(blocktimeSet, kPreferredBlockTime);
53 }
54
TEST_F(OpenmpSettingsTest,Test2)55 TEST_F(OpenmpSettingsTest, Test2) {
56 ScopedOpenmpSettings s1;
57 const int blocktimeSet1 = kmp_get_blocktime();
58 ASSERT_EQ(blocktimeSet1, kPreferredBlockTime);
59
60 ScopedOpenmpSettings s2;
61 const int blocktimeSet2 = kmp_get_blocktime();
62 ASSERT_EQ(blocktimeSet2, kPreferredBlockTime);
63 }
64
TEST_F(OpenmpSettingsTest,TestThreaded)65 TEST_F(OpenmpSettingsTest, TestThreaded) {
66 // Threaded test to validate that each thread gets its own settings.
67 std::vector<std::thread> threads;
68 std::mt19937 randGen;
69 std::uniform_int_distribution<> rand(1, 20);
70 for (int i = 0; i < 10; i++) {
71 const int sleepFor = rand(randGen);
72 threads.push_back(std::thread([sleepFor]() {
73 const int blocktimeInitial = kmp_get_blocktime();
74 // kmp_get_blocktime() in a new thread returns 0 instead of 200
75 // about 10% of time on-device
76 ASSERT_TRUE(blocktimeInitial == 0 || blocktimeInitial == kOpenmpDefaultBlockTime);
77
78 ScopedOpenmpSettings s;
79
80 const int blocktimeSet1 = kmp_get_blocktime();
81 ASSERT_EQ(blocktimeSet1, kPreferredBlockTime);
82
83 usleep(sleepFor);
84
85 const int blocktimeSet2 = kmp_get_blocktime();
86 ASSERT_EQ(blocktimeSet2, kPreferredBlockTime);
87 }));
88 }
89 std::for_each(threads.begin(), threads.end(), [](std::thread& t) { t.join(); });
90 }
91
92 } // end namespace
93