Messages in this thread | | | From | "Manfred Spraul" <> | Subject | Re: new semaphores | Date | Sun, 29 Aug 1999 12:20:08 +0200 |
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Andrea, if you are modifying the semaphore code, perhaps you could add something similar to the WinNT ERESOURCE: * single writer, multiple reader. * schedules other threads when busy. * you cannot call "up_rsrc()" before you called "down_rsrc()" [this is possible with semaphores, at least on NT], so wake-one should be possible.
IIRC, Alexander Viro wrote that he might need that to fix the VFS read()/write()/truncate() synchronization.
-- Manfred
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