drd/tests/std_thread.cpp

   1 // Test whether no race conditions are reported on std::thread. Note: since
   2 // the implementation of std::thread uses the shared pointer implementation,
   3 // that implementation has to be annotated in order to avoid false positives.
   4 // See also http://gcc.gnu.org/onlinedocs/libstdc++/manual/debug.html for more
   5 // information.
   6
   7 #include "../../drd/drd.h"
   8 #define _GLIBCXX_SYNCHRONIZATION_HAPPENS_BEFORE(addr) \
   9   ANNOTATE_HAPPENS_BEFORE(addr)
  10 #define _GLIBCXX_SYNCHRONIZATION_HAPPENS_AFTER(addr) \
  11   ANNOTATE_HAPPENS_AFTER(addr)
  12
  13 #include <iostream>
  14 #include <thread>
  15
  16 int main(int argc, char** argv)
  17 {
  18   std::thread t( []() { } );
  19   t.join();
  20   std::cerr << "Done.\n";
  21   return 0;
  22 }
  23
  24 //
  25 // From libstdc++-v3/src/c++11/thread.cc
  26 //
  27
  28 extern "C" void* execute_native_thread_routine(void* __p)
  29 {
  30   std::thread::_Impl_base* __t = static_cast<std::thread::_Impl_base*>(__p);
  31   std::thread::__shared_base_type __local;
  32   __local.swap(__t->_M_this_ptr);
  33
  34   __try {
  35     __t->_M_run();
  36   } __catch(const __cxxabiv1::__forced_unwind&) {
  37     __throw_exception_again;
  38   } __catch(...) {
  39     std::terminate();
  40   }
  41
  42   return 0;
  43 }
  44
  45 #include <system_error>
  46
  47 namespace std
  48 {
  49   void thread::_M_start_thread(__shared_base_type __b)
  50   {
  51     if (!__gthread_active_p())
  52 #if __EXCEPTIONS
  53       throw system_error(make_error_code(errc::operation_not_permitted),
  54                          "Enable multithreading to use std::thread");
  55 #else
  56       __throw_system_error(int(errc::operation_not_permitted));
  57 #endif
  58
  59     __b->_M_this_ptr = __b;
  60     int __e = __gthread_create(&_M_id._M_thread, execute_native_thread_routine,
  61                                __b.get());
  62     if (__e) {
  63       __b->_M_this_ptr.reset();
  64       __throw_system_error(__e);
  65     }
  66   }
  67 }