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178 lines
5.3 KiB
C++
178 lines
5.3 KiB
C++
// Copyright (c) 2014-2017, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "gtest/gtest.h"
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#include <atomic>
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#include "common/task_region.h"
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#include "common/thread_group.h"
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TEST(ThreadGroup, NoThreads)
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{
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tools::task_region(tools::thread_group(0), [] (tools::task_region_handle& region) {
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std::atomic<bool> completed{false};
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region.run([&] { completed = true; });
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EXPECT_TRUE(completed);
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});
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{
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tools::thread_group group(0);
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std::atomic<bool> completed{false};
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group.dispatch([&] { completed = true; });
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EXPECT_TRUE(completed);
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}
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}
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TEST(ThreadGroup, OneThread)
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{
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tools::thread_group group(1);
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for (unsigned i = 0; i < 3; ++i) {
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std::atomic<bool> completed{false};
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tools::task_region(group, [&] (tools::task_region_handle& region) {
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region.run([&] { completed = true; });
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});
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EXPECT_TRUE(completed);
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}
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}
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TEST(ThreadGroup, UseActiveThreadOnSync)
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{
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tools::thread_group group(1);
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for (unsigned i = 0; i < 3; ++i) {
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std::atomic<bool> completed{false};
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tools::task_region(group, [&] (tools::task_region_handle& region) {
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region.run([&] { while (!completed); });
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region.run([&] { completed = true; });
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});
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EXPECT_TRUE(completed);
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}
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}
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TEST(ThreadGroup, InOrder)
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{
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tools::thread_group group(1);
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for (unsigned i = 0; i < 3; ++i) {
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std::atomic<unsigned> count{0};
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std::atomic<bool> completed{false};
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tools::task_region(group, [&] (tools::task_region_handle& region) {
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region.run([&] { while (!completed); });
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region.run([&] { if (count == 0) completed = true; });
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region.run([&] { ++count; });
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});
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EXPECT_TRUE(completed);
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EXPECT_EQ(1u, count);
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}
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}
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TEST(ThreadGroup, TwoThreads)
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{
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tools::thread_group group(2);
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for (unsigned i = 0; i < 3; ++i) {
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std::atomic<bool> completed{false};
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tools::task_region(group, [&] (tools::task_region_handle& region) {
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region.run([&] { while (!completed); });
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region.run([&] { while (!completed); });
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region.run([&] { completed = true; });
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});
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EXPECT_TRUE(completed);
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}
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}
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TEST(ThreadGroup, Nested) {
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struct fib {
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unsigned operator()(tools::thread_group& group, unsigned value) const {
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if (value == 0 || value == 1) {
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return value;
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}
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unsigned left = 0;
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unsigned right = 0;
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tools::task_region(group, [&, value] (tools::task_region_handle& region) {
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region.run([&, value] { left = fib{}(group, value - 1); });
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region.run([&, value] { right = fib{}(group, value - 2); } );
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});
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return left + right;
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}
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unsigned operator()(tools::thread_group&& group, unsigned value) const {
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return (*this)(group, value);
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}
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};
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// be careful of depth on asynchronous version
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EXPECT_EQ(6765, fib{}(tools::thread_group(0), 20));
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EXPECT_EQ(377, fib{}(tools::thread_group(1), 14));
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}
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TEST(ThreadGroup, Many)
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{
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tools::thread_group group(1);
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for (unsigned i = 0; i < 3; ++i) {
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std::atomic<unsigned> count{0};
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tools::task_region(group, [&] (tools::task_region_handle& region) {
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for (unsigned tasks = 0; tasks < 1000; ++tasks) {
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region.run([&] { ++count; });
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}
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});
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EXPECT_EQ(1000u, count);
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}
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}
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TEST(ThreadGroup, ThrowInTaskRegion)
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{
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class test_exception final : std::exception {
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public:
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explicit test_exception() : std::exception() {}
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virtual const char* what() const noexcept override {
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return "test_exception";
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}
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};
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tools::thread_group group(1);
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for (unsigned i = 0; i < 3; ++i) {
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std::atomic<unsigned> count{0};
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EXPECT_THROW(
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[&] {
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tools::task_region(group, [&] (tools::task_region_handle& region) {
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for (unsigned tasks = 0; tasks < 1000; ++tasks) {
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region.run([&] { ++count; });
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}
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throw test_exception();
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});
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}(),
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test_exception
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);
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EXPECT_GE(1000u, count);
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}
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}
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