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git/compat/poll
Edward Thomson ef8b53e78c poll: honor the timeout on Win32
Ensure that when passing a pipe, the gnulib poll replacement will not
return 0 before the timeout has passed.

Not obeying the timeout (and merely returning 0) causes pathological
behavior when preparing a packfile for a repository and taking a
long time to do so.  If poll were to return 0 immediately, this would
cause keep-alives to get sent as quickly as possible until the packfile
was created.  Such deviance from the standard would cause megabytes (or
more) of keep-alive packets to be sent.

GetTickCount is used as it is efficient, stable and monotonically
increasing.  (Neither GetSystemTime nor QueryPerformanceCounter have
all three of these properties.)

Signed-off-by: Edward Thomson <ethomson@microsoft.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-09-14 12:53:48 -07:00
..
poll.c poll: honor the timeout on Win32 2015-09-14 12:53:48 -07:00
poll.h