| 1 | /*
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| 2 | * asio-bug1.cpp
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| 3 | * Created by Andrew Kargalov on 14/12/2011.
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| 4 |
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| 5 |
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| 6 | Expected behavior: print 2 lines and exit.
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| 7 | Real behavior with boost 1.48: hang.
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| 8 |
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| 9 | Stack trace on hang:
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| 10 |
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| 11 | 0 libSystem.B.dylib 0x91177b42 semaphore_wait_signal_trap + 10
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| 12 | 1 libSystem.B.dylib 0x9117d646 pthread_mutex_lock + 490
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| 13 | 2 asio-bug1 0x00002218 boost::asio::detail::posix_mutex::lock() + 18 (posix_mutex.hpp:52)
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| 14 | 3 asio-bug1 0x000027fc boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>::scoped_lock(boost::asio::detail::posix_mutex&) + 44 (scoped_lock.hpp:36)
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| 15 | 4 asio-bug1 0x00004177 boost::asio::detail::task_io_service::post_deferred_completions(boost::asio::detail::op_queue<boost::asio::detail::task_io_service_operation>&) + 117 (task_io_service.ipp:308)
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| 16 | 5 asio-bug1 0x0000a9f9 boost::asio::detail::signal_set_service::deliver_signal(int) + 231 (signal_set_service.ipp:458)
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| 17 | 6 asio-bug1 0x0000aaab boost::asio::detail::signal_set_service::pipe_read_op::do_perform(boost::asio::detail::reactor_op*) + 59 (signal_set_service.ipp:95)
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| 18 | 7 asio-bug1 0x00008f4e boost::asio::detail::reactor_op::perform() + 20 (reactor_op.hpp:40)
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| 19 | 8 asio-bug1 0x0000e164 void boost::asio::detail::reactor_op_queue<int>::perform_operations_for_descriptors<boost::asio::detail::posix_fd_set_adapter>(boost::asio::detail::posix_fd_set_adapter const&, boost::asio::detail::op_queue<boost::asio::detail::task_io_service_operation>&) + 142 (reactor_op_queue.hpp:149)
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| 20 | 9 asio-bug1 0x0000e506 boost::asio::detail::select_reactor::run(bool, boost::asio::detail::op_queue<boost::asio::detail::task_io_service_operation>&) + 768 (select_reactor.ipp:238)
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| 21 | 10 asio-bug1 0x0000e678 boost::asio::detail::task_io_service::do_run_one(boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>&, boost::asio::detail::task_io_service::thread_info&, boost::asio::detail::op_queue<boost::asio::detail::task_io_service_operation>&, boost::system::error_code const&) + 274 (task_io_service.ipp:350)
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| 22 |
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| 23 | */
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| 24 |
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| 25 | #include <iostream>
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| 26 | #include <signal.h>
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| 27 |
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| 28 | #include <boost/asio.hpp>
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| 29 |
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| 30 | boost::asio::io_service io;
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| 31 | boost::asio::signal_set ss(io, SIGUSR1);
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| 32 | boost::asio::deadline_timer dt(io);
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| 33 |
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| 34 | void timer_callback(const boost::system::error_code& ec)
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| 35 | {
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| 36 | if(!ec) std::cout << "timer fired" << std::endl;
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| 37 | }
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| 38 |
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| 39 | void signal_callback2(const boost::system::error_code& ec, int signo)
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| 40 | {
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| 41 | std::cout << "2: signal " << signo << " received" << std::endl;
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| 42 | }
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| 43 |
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| 44 | void signal_callback1(const boost::system::error_code& ec, int signo)
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| 45 | {
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| 46 | std::cout << "1: signal " << signo << " received" << std::endl;
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| 47 | ss.async_wait(signal_callback2);
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| 48 | raise(SIGUSR1);
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| 49 | dt.cancel(); // <-- hang up point
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| 50 | }
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| 51 |
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| 52 | int main (int argc, char * const argv[])
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| 53 | {
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| 54 | ss.async_wait(signal_callback1);
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| 55 | dt.expires_from_now(boost::posix_time::seconds(1));
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| 56 | dt.async_wait(timer_callback);
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| 57 |
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| 58 | raise(SIGUSR1);
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| 59 | io.run();
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| 60 |
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| 61 | return 0;
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| 62 | }
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