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Diffstat (limited to 'src/boost/libs/fiber/examples/join.cpp')
-rw-r--r-- | src/boost/libs/fiber/examples/join.cpp | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/src/boost/libs/fiber/examples/join.cpp b/src/boost/libs/fiber/examples/join.cpp new file mode 100644 index 00000000..7ece0500 --- /dev/null +++ b/src/boost/libs/fiber/examples/join.cpp @@ -0,0 +1,67 @@ + +// Copyright Oliver Kowalke 2013. +// Distributed under the Boost Software License, Version 1.0. +// (See accompanying file LICENSE_1_0.txt or copy at +// http://www.boost.org/LICENSE_1_0.txt) + +#include <cstdlib> +#include <functional> +#include <stdexcept> +#include <iostream> +#include <string> + +#include <boost/fiber/all.hpp> + +int value1 = 0; +int value2 = 0; + +void fn1() +{ + boost::fibers::fiber::id this_id = boost::this_fiber::get_id(); + for ( int i = 0; i < 5; ++i) + { + ++value1; + std::cout << "fiber " << this_id << " fn1: increment value1: " << value1 << std::endl; + boost::this_fiber::yield(); + } + std::cout << "fiber " << this_id << " fn1: returns" << std::endl; +} + +void fn2( boost::fibers::fiber & f) +{ + boost::fibers::fiber::id this_id = boost::this_fiber::get_id(); + for ( int i = 0; i < 5; ++i) + { + ++value2; + std::cout << "fiber " << this_id << " fn2: increment value2: " << value2 << std::endl; + if ( i == 1) + { + boost::fibers::fiber::id id = f.get_id(); + std::cout << "fiber " << this_id << " fn2: joins fiber " << id << std::endl; + f.join(); + std::cout << "fiber " << this_id << " fn2: joined fiber " << id << std::endl; + } + boost::this_fiber::yield(); + } + std::cout << "fiber " << this_id << " fn2: returns" << std::endl; +} + +int main() +{ + try + { + boost::fibers::fiber f1( fn1); + boost::fibers::fiber f2( fn2, std::ref( f1) ); + + f2.join(); + + std::cout << "done." << std::endl; + + return EXIT_SUCCESS; + } + catch ( std::exception const& e) + { std::cerr << "exception: " << e.what() << std::endl; } + catch (...) + { std::cerr << "unhandled exception" << std::endl; } + return EXIT_FAILURE; +} |