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| #include <chrono>
#include <thread>
void
thread_function ()
{
// Set thread-specific breakpoint here.
std::this_thread::sleep_for(std::chrono::milliseconds(20));
// On Windows, a sleep_for of less than about 16 ms effectively calls
// Sleep(0). The MS standard thread implementation uses a system thread
// pool, which can deadlock on a Sleep(0), hanging not only the secondary
// thread but the entire test. I increased the delay to 20 ms to ensure
// Sleep is called with a delay greater than 0. The deadlock potential
// is described here:
// https://docs.microsoft.com/en-us/windows/win32/api/synchapi/nf-synchapi-sleep#remarks
}
int
main ()
{
// Set main breakpoint here.
#ifdef __APPLE__
pthread_setname_np("main-thread");
#endif
std::thread t(thread_function);
t.join();
thread_function();
return 0;
}
|