Author: Robert Hyatt
Date: 14:08:49 07/25/99
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On July 25, 1999 at 16:26:34, James Swafford wrote: >On July 25, 1999 at 13:45:36, Robert Hyatt wrote: > >>On July 24, 1999 at 17:19:31, James Swafford wrote: >> > >[snip] > >>5. create a global/shared variable initialized to 0. Whenever a thread notices >>it is 1, they exit. Then set this when needed... > > >ui_thread_is_dead is already a global variable. How >is this different than "shared," and how do I designate >it as shared? > >Under MSVC, *all* the global variables were shared, so >if one thread modified a global, the other thread would >see it. That doesn't appear to be the case here. > >The program is designed in such a way that all the global >variables are assumed to be shared between threads. If this >isn't the case when using fork( ), I could be in for some >long nights. :-/ Is there a way to designate *all* globals >as "shared?" (Or am I still missing something here?) > >Thanks. > >-- >James I forgot to add, if you do have true shared-memory variables, they _must_ be declared volatile or the compiler will optimize you right out of the game.
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