messagemode named pipes investigation: blocking-reads block writers indefinitely
Luke Kenneth Casson Leighton
luke.leighton at googlemail.com
Wed Feb 4 11:43:39 CST 2009
> main process: blocking-read on namedpipe.
> 5 threads: write to same named pipe
> the writes NEVER return (this is with xp).
> so that WOULD indicate that there IS a per-pipe mutex (and that there
> are bugs in nt!)
turns out it's an msvcrt bug (in windows nt). if you use
_beginthread() to create the 5 threads (or even just the one), the
reader can block the writer(s). however if you use CreateThread(),
anyone want to record _that_ one as a future interoperability
bug-test, be my guest! ha ha :) no, but seriously: if someone tells
me it's a worthwhile thing to have as an interoperability test, i'll
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