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c++thread-safetymutexmonitor

Thread safe issues

I have got doubt, when I call ClassA:funcB() from ClassA:funcA() - where ClassA:funcA() HAS monitor and when I call ClassA:funcB() it's inside monitor.

Here:

static pthread_mutex_t my_mutex;

ClassA::funcA()
{
    monitor mp(my_mutex);
    err = funcB();
}

ClassA::funcB()
{
  ...
  stuff with NO lock etc
  ...
}

ClassA:funcB() is getting called from ONLY funcA(), is it thread safe?

Solution

  • Sure. If funcB is only called from funcA while funcA has acquired the mutex, then you are thread safe.