search for: pthread_mutex_errorcheck

On Fri, Jun 6, 2014 at 10:57 PM, Kostya Serebryany <kcc at google.com> wrote: > As for the deadlocks, indeed it is possible to add deadlock detection > directly to std::mutex and std::spinlock code. > It may even end up being more efficient than a standalone deadlock > detector -- > but only if we can add an extra word to the mutex/spinlock object. > The deadlock

> > > On FreeBSD and OS X, the underlying pthread_mutex can already do deadlock > detection, so I don't see why you'd need to add another word. The > PTHREAD_MUTEX_ERRORCHECK attribute has been part of POSIX since 1997, so > I'd expect it to be supported everywhere. > PTHREAD_MUTEX_ERRORCHECK detects the deadlock that already happened. tsan's deadlock detector (as well as helgrind and many other similar tools) detects lock order inversion, i.e. a situatio...