jl> I have a question about using more than two threads in
 jl> a PM application. I create an object window which
 jl> handles messages sent to threads (different parts of
 jl> my program want to do things simultaneously, e.g. read
 jl> one file and display other). I use the /same/ thread
 jl> function for all threads.

 jl> Is this OK to do? Are there any situations in which my
 jl> program would behave erroneusly?

I just briefly looked at your code and didn't see any glaring errors in a
few-second browse, but thought that you might find these guidelines
helpful:

1) Multithread programs should minimize the use of static and global
   variables.

2) Any variables or resources that may have to be accessed by more
   than one thread at a time MUST be protected by a semaphore
   or some other mechanism in order to avoid corrupting the data
   structures a thread context switch occurs such that one thread
   hasn't finished modifying a data structure and then the next
   thread starts modifying it while it is in an inconsistent state.

It is not a problem to use the same function for running multiple threads
as long as you follow the above guidelines.




--- Maximus/2 2.01wb