| // Test whether no race conditions are reported on std::thread. Note: since |
| // the implementation of std::thread uses the shared pointer implementation, |
| // that implementation has to be annotated in order to avoid false positives. |
| // See also http://gcc.gnu.org/onlinedocs/libstdc++/manual/debug.html for more |
| // information. |
| |
| #include "../../drd/drd.h" |
| #define _GLIBCXX_SYNCHRONIZATION_HAPPENS_BEFORE(addr) \ |
| ANNOTATE_HAPPENS_BEFORE(addr) |
| #define _GLIBCXX_SYNCHRONIZATION_HAPPENS_AFTER(addr) \ |
| ANNOTATE_HAPPENS_AFTER(addr) |
| |
| #include <iostream> |
| #include <thread> |
| #include <unistd.h> |
| |
| static int i; |
| |
| int main(int argc, char** argv) |
| { |
| std::thread t1( []() { sleep(1); i = 1; } ); |
| std::thread t2( []() { i = 2; } ); |
| t2.join(); |
| t1.join(); |
| std::cerr << "Done.\n"; |
| return 0; |
| } |
| |
| // |
| // From libstdc++-v3/src/c++11/thread.cc |
| // |
| |
| extern "C" void* execute_native_thread_routine(void* __p) |
| { |
| std::thread::_Impl_base* __t = static_cast<std::thread::_Impl_base*>(__p); |
| std::thread::__shared_base_type __local; |
| __local.swap(__t->_M_this_ptr); |
| |
| __try { |
| __t->_M_run(); |
| } __catch(const __cxxabiv1::__forced_unwind&) { |
| __throw_exception_again; |
| } __catch(...) { |
| std::terminate(); |
| } |
| |
| return 0; |
| } |
| |
| #include <system_error> |
| |
| namespace std |
| { |
| void thread::_M_start_thread(__shared_base_type __b) |
| { |
| if (!__gthread_active_p()) |
| #if __EXCEPTIONS |
| throw system_error(make_error_code(errc::operation_not_permitted), |
| "Enable multithreading to use std::thread"); |
| #else |
| __throw_system_error(int(errc::operation_not_permitted)); |
| #endif |
| |
| __b->_M_this_ptr = __b; |
| int __e = __gthread_create(&_M_id._M_thread, execute_native_thread_routine, |
| __b.get()); |
| if (__e) { |
| __b->_M_this_ptr.reset(); |
| __throw_system_error(__e); |
| } |
| } |
| } |