Add --runOnce flag to run benchs once in release or to force convergence in debug

Add --runOnce flag to run benchs once in release or to force convergence in debug

Committed: http://code.google.com/p/skia/source/detail?r=14292

[mtklein, 2014-04-21 20:04:15]

https://codereview.chromium.org/242103013/diff/20001/bench/benchmain.cpp
File bench/benchmain.cpp (right):

https://codereview.chromium.org/242103013/diff/20001/bench/benchmain.cpp#newc...
bench/benchmain.cpp:678: if (kIsDebug || FLAGS_runOnce) {
Let's just fold it into one bool?  It's really the single-iterationess I find
misleading; Debug times could very well converge to sensible values when run
repeatedly.

[bsalomon, 2014-04-21 20:42:50]

https://codereview.chromium.org/242103013/diff/20001/bench/benchmain.cpp
File bench/benchmain.cpp (right):

https://codereview.chromium.org/242103013/diff/20001/bench/benchmain.cpp#newc...
bench/benchmain.cpp:678: if (kIsDebug || FLAGS_runOnce) {
On 2014/04/21 20:04:16, mtklein wrote:
> Let's just fold it into one bool?  It's really the single-iterationess I find
> misleading; Debug times could very well converge to sensible values when run
> repeatedly.

Done.

[mtklein, 2014-04-21 20:48:49]

On 2014/04/21 20:42:50, bsalomon wrote:
> https://codereview.chromium.org/242103013/diff/20001/bench/benchmain.cpp
> File bench/benchmain.cpp (right):
> 
>
https://codereview.chromium.org/242103013/diff/20001/bench/benchmain.cpp#newc...
> bench/benchmain.cpp:678: if (kIsDebug || FLAGS_runOnce) {
> On 2014/04/21 20:04:16, mtklein wrote:
> > Let's just fold it into one bool?  It's really the single-iterationess I
find
> > misleading; Debug times could very well converge to sensible values when run
> > repeatedly.
> 
> Done.

lgtm

[bsalomon, 2014-04-21 20:49:45]

The CQ bit was checked by bsalomon@google.com

[commit-bot: I haz the power, 2014-04-21 20:49:59]

CQ is trying da patch. Follow status at
https://skia-tree-status.appspot.com/cq/bsalomon@google.com/242103013/40001

[commit-bot: I haz the power, 2014-04-21 21:12:34]

Change committed as 14292