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/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "CpuExecutor.h"
#include <algorithm>
#include <gtest/gtest.h>
#include <memory>
#include <omp.h>
#include <random>
#include <thread>
#include <unistd.h>
#include <vector>
namespace {
class OpenmpSettingsTest : public ::testing::Test {
protected:
virtual void SetUp() override {
const int blocktimeInitial = kmp_get_blocktime();
ASSERT_EQ(blocktimeInitial, kOpenmpDefaultBlockTime);
}
virtual void TearDown() override {
const int blocktimeRestored = kmp_get_blocktime();
ASSERT_EQ(blocktimeRestored, kOpenmpDefaultBlockTime);
}
static const int kOpenmpDefaultBlockTime;
};
const int OpenmpSettingsTest::kOpenmpDefaultBlockTime = 200;
using ::android::nn::ScopedOpenmpSettings;
TEST_F(OpenmpSettingsTest, Test1) {
ScopedOpenmpSettings s;
const int blocktimeSet = kmp_get_blocktime();
ASSERT_EQ(blocktimeSet, 1);
}
TEST_F(OpenmpSettingsTest, Test2) {
ScopedOpenmpSettings s1;
const int blocktimeSet1 = kmp_get_blocktime();
ASSERT_EQ(blocktimeSet1, 1);
ScopedOpenmpSettings s2;
const int blocktimeSet2 = kmp_get_blocktime();
ASSERT_EQ(blocktimeSet2, 1);
}
TEST_F(OpenmpSettingsTest, TestThreaded) {
// Threaded test to validate that each thread gets its own settings.
std::vector<std::thread> threads;
std::mt19937 randGen;
std::uniform_int_distribution<> rand(1, 20);
for (int i = 0; i < 10; i++) {
const int sleepFor = rand(randGen);
threads.push_back(std::thread([sleepFor]() {
const int blocktimeSet1 = kmp_get_blocktime();
ASSERT_EQ(blocktimeSet1, kOpenmpDefaultBlockTime);
ScopedOpenmpSettings s;
const int blocktimeSet2 = kmp_get_blocktime();
ASSERT_EQ(blocktimeSet2, 1);
usleep(sleepFor);
const int blocktimeSet3 = kmp_get_blocktime();
ASSERT_EQ(blocktimeSet3, 1);
}));
}
std::for_each(threads.begin(), threads.end(), [](std::thread& t) {
t.join();
});
}
} // end namespace
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