RE: [boost] Re: Threads: rw_mutex design + sample implementation

From: Darryl Green (green_at_[hidden])
Date: 2002-03-11 20:49:39

> -----Original Message-----
> From: Carl Daniel [mailto:cpdaniel_at_[hidden]]
> 
> The only solution
> I've encountered (various RTOS's, Windows) is to raise the 
> priority of the lock-holding thread to equal that of the
> lock-waiting thread, thus allowing it to run.  Once the lock 
> is released, the priorities are returned to normal.  Of
> course, the better solution is to design the system so that 
> high and low priority work never compete for resources.
> 
> -cd

In my experience the "better solution" often conflicts directly with the
overall scheduling requirements of a realtime system - I don't think there
is a way of reconciling the conflict without priority inheritance or
similar.