>>>>> "DS" == Dan Sugalski <[EMAIL PROTECTED]> writes:
DS> =item All shared PMCs must have a threadsafe vtable
DS> The first thing that any vtable function of a shared PMC must do is to DS> aquire the mutex of the PMCs in its parameter list, in ascending DS> address order. When the mutexes are released they are not required to DS> be released in any order.
why the ascending address order to grab mutexes? is this to help solve deadlocks?
Yes. The recommendation I've always seen for deadlock avoidance is to always have all your code grab its mutexes in some fixed order. With source, it's generally recommended that you grab mutex variables in lexical order. Since we're all binary we need a different order, and ascending addresses are reasonably simple to do.
--
Dan
--------------------------------------"it's like this"-------------------
Dan Sugalski even samurai
[EMAIL PROTECTED] have teddy bears and even
teddy bears get drunk
