1 // Copyright 2018, 2020 Peter Dimov 2 // Distributed under the Boost Software License, Version 1.0. 3 // https://www.boost.org/LICENSE_1_0.txt) 4 5 #include <boost/smart_ptr/detail/spinlock.hpp> 6 #include <boost/smart_ptr/detail/lightweight_thread.hpp> 7 #include <boost/bind/bind.hpp> 8 #include <boost/core/lightweight_test.hpp> 9 10 static int count = 0; 11 static boost::detail::spinlock sp = BOOST_DETAIL_SPINLOCK_INIT; 12 f(int n)13void f( int n ) 14 { 15 for( int i = 0; i < n; ++i ) 16 { 17 boost::detail::spinlock::scoped_lock lock( sp ); 18 ++count; 19 } 20 } 21 main()22int main() 23 { 24 int const N = 100000; // iterations 25 int const M = 8; // threads 26 27 boost::detail::lw_thread_t th[ M ] = {}; 28 29 for( int i = 0; i < M; ++i ) 30 { 31 boost::detail::lw_thread_create( th[ i ], boost::bind( f, N ) ); 32 } 33 34 for( int i = 0; i < M; ++i ) 35 { 36 boost::detail::lw_thread_join( th[ i ] ); 37 } 38 39 BOOST_TEST_EQ( count, N * M ); 40 41 return boost::report_errors(); 42 } 43