76 lines
2.7 KiB
C++
76 lines
2.7 KiB
C++
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/*
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* Copyright (c) 2018 The BitShares Blockchain, and contributors.
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*
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* The MIT License
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <boost/test/unit_test.hpp>
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#include <fc/thread/parallel.hpp>
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BOOST_AUTO_TEST_SUITE(parallel_tests)
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BOOST_AUTO_TEST_CASE( do_nothing_parallel )
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{
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std::vector<fc::future<void>> results;
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results.reserve( 20 );
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for( size_t i = 0; i < results.capacity(); i++ )
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results.push_back( fc::do_parallel( [i] () { std::cout << i << ","; } ) );
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for( auto& result : results )
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result.wait();
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std::cout << "\n";
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}
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BOOST_AUTO_TEST_CASE( do_something_parallel )
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{
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struct result {
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boost::thread::id thread_id;
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int call_count;
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};
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std::vector<fc::future<result>> results;
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results.reserve( 20 );
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boost::thread_specific_ptr<int> tls;
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for( size_t i = 0; i < results.capacity(); i++ )
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results.push_back( fc::do_parallel( [i,&tls] () {
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if( !tls.get() ) { tls.reset( new int(0) ); }
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result res = { boost::this_thread::get_id(), (*tls.get())++ };
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return res;
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} ) );
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std::map<boost::thread::id,std::vector<int>> results_by_thread;
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for( auto& res : results )
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{
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result r = res.wait();
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results_by_thread[r.thread_id].push_back( r.call_count );
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}
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BOOST_CHECK( results_by_thread.size() > 1 ); // require execution by more than 1 thread
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for( auto& pair : results_by_thread )
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{ // check that thread_local_storage counter works
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std::sort( pair.second.begin(), pair.second.end() );
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for( size_t i = 0; i < pair.second.size(); i++ )
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BOOST_CHECK_EQUAL( i, pair.second[i] );
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}
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}
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BOOST_AUTO_TEST_SUITE_END()
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