commit 74b43a9d4c5c602704f0af6a5706faacca45597a
author commit-bot@chromium.org <commit-bot@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81> Thu Apr 24 20:04:20 2014 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81> Thu Apr 24 20:04:20 2014 +0000
tree 6006916622c201664d120389d2ee7df13ef155f2
parent e00ad689d0e627e53e1884c4cdd40089dd4996a1

Add nanosecond timer.

I've been finding it hard to get enough resolution out of our existing timers when measuring really tiny pictures.

BUG=skia:2378
R=bsalomon@google.com, mtklein@google.com, bungeman@google.com

Author: mtklein@chromium.org

Review URL: https://codereview.chromium.org/250243002

git-svn-id: http://skia.googlecode.com/svn/trunk@14362 2bbb7eff-a529-9590-31e7-b0007b416f81

tools/bench_playback.cpp

diff --git a/tools/bench_playback.cpp b/tools/bench_playback.cpp
index a5dfe50..534ad96 100644
--- a/tools/bench_playback.cpp
+++ b/tools/bench_playback.cpp
@@ -40,7 +40,7 @@
                                                                 src.width() * sizeof(SkPMColor)));
     canvas->clipRect(SkRect::MakeWH(SkIntToScalar(FLAGS_tile), SkIntToScalar(FLAGS_tile)));
 
-    const SkMSec start = SkTime::GetMSecs();
+    const SkNSec start = SkTime::GetNSecs();
     for (int i = 0; i < FLAGS_loops; i++) {
         if (FLAGS_skr) {
             SkRecordDraw(record, canvas.get());
@@ -49,9 +49,9 @@
         }
     }
 
-    const SkMSec elapsed = SkTime::GetMSecs() - start;
-    const double msPerLoop = elapsed / (double)FLAGS_loops;
-    printf("%6.2f\t%s\n", msPerLoop, name);
+    const SkNSec elapsed = SkTime::GetNSecs() - start;
+    const double nsPerLoop = elapsed / (double)FLAGS_loops;
+    printf("%u\t%s\n", SkToUInt(nsPerLoop), name);
 }
 
 int tool_main(int argc, char** argv);