tree 21add774cef1b6ae6ff7d6fb05e1806120f71925
parent d8d481427a05b88cdb0810c29bf400153595c423
author snappy.mirrorbot@gmail.com <snappy.mirrorbot@gmail.com@03e5f5b5-db94-4691-08a0-1a8bf15f6143> 1304976525 +0000
committer snappy.mirrorbot@gmail.com <snappy.mirrorbot@gmail.com@03e5f5b5-db94-4691-08a0-1a8bf15f6143> 1304976525 +0000


Fix public issue #38: Make the microbenchmark framework handle
properly cases where gettimeofday() can stand return the same
result twice (as sometimes on GNU/Hurd) or go backwards
(as when the user adjusts the clock). We avoid a division-by-zero,
and put a lower bound on the number of iterations -- the same
amount as we use to calibrate.

We should probably use CLOCK_MONOTONIC for platforms that support
it, to be robust against clock adjustments; we already use Windows'
monotonic timers. However, that's for a later changelist.

R=csilvers
DELTA=7  (5 added, 0 deleted, 2 changed)


Revision created by MOE tool push_codebase.
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git-svn-id: https://snappy.googlecode.com/svn/trunk@34 03e5f5b5-db94-4691-08a0-1a8bf15f6143