102 lines
3.4 KiB
C++
102 lines
3.4 KiB
C++
// Copyright (c) 2018, 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 <atomic>
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#include "gtest/gtest.h"
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#include "misc_language.h"
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#include "common/threadpool.h"
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TEST(threadpool, wait_nothing)
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{
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std::shared_ptr<tools::threadpool> tpool(tools::threadpool::getNewForUnitTests());
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tools::threadpool::waiter waiter;
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waiter.wait();
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}
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TEST(threadpool, wait_waits)
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{
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std::shared_ptr<tools::threadpool> tpool(tools::threadpool::getNewForUnitTests());
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tools::threadpool::waiter waiter;
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std::atomic<bool> b(false);
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tpool->submit(&waiter, [&b](){ epee::misc_utils::sleep_no_w(1000); b = true; });
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ASSERT_FALSE(b);
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waiter.wait();
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ASSERT_TRUE(b);
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}
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TEST(threadpool, one_thread)
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{
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std::shared_ptr<tools::threadpool> tpool(tools::threadpool::getNewForUnitTests(1));
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tools::threadpool::waiter waiter;
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std::atomic<unsigned int> counter(0);
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for (size_t n = 0; n < 4096; ++n)
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{
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tpool->submit(&waiter, [&counter](){++counter;});
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}
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waiter.wait();
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ASSERT_EQ(counter, 4096);
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}
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TEST(threadpool, many_threads)
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{
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std::shared_ptr<tools::threadpool> tpool(tools::threadpool::getNewForUnitTests(256));
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tools::threadpool::waiter waiter;
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std::atomic<unsigned int> counter(0);
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for (size_t n = 0; n < 4096; ++n)
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{
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tpool->submit(&waiter, [&counter](){++counter;});
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}
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waiter.wait();
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ASSERT_EQ(counter, 4096);
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}
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static uint64_t fibonacci(std::shared_ptr<tools::threadpool> tpool, uint64_t n)
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{
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if (n <= 1)
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return n;
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uint64_t f1, f2;
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tools::threadpool::waiter waiter;
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tpool->submit(&waiter, [&tpool, &f1, n](){ f1 = fibonacci(tpool, n-1); });
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tpool->submit(&waiter, [&tpool, &f2, n](){ f2 = fibonacci(tpool, n-2); });
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waiter.wait();
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return f1 + f2;
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}
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TEST(threadpool, reentrency)
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{
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std::shared_ptr<tools::threadpool> tpool(tools::threadpool::getNewForUnitTests(4));
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tools::threadpool::waiter waiter;
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uint64_t f = fibonacci(tpool, 13);
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waiter.wait();
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ASSERT_EQ(f, 233);
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}
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