Re: CompactMem from a CDA

[vandry@CAM.ORG (Phillip Vandry)]

David A Lyons <dlyons@apple.com> writes:

>The interrupt manager incremented a flag at $E100CB to indicate that the
>system is in an interrupted state.  CompactMem checks that flag and does
>nothing if it's nonzero, because the system is not allowed to move memory
>blocks at interrupt time (that is, software is allowed to assume that
>unlocked blocks of memory move only during system calls).

You mean if I won't be making any toolbox or GS/OS calls I don't need to
lock a block before I use it?? I've been locking them even if I need only
a word or something.

Although... No, it wouldn't work. If a context switch were to occur while I
was using the block some other process could make it move around.

Guess I'll just keep on doing it the way I always have.
 ______________________________________________________________________
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| Phillip Vandry | Vandry@Cam.Org | Suicide (n.): What to do if Macs   |
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