nanobench: flush after recording every Nth data point.
Got to keep our precious data in event of a crash.
With --flushEvery 10 I'm not seeing this cost any wall time.
BUG=skia:
Review URL: https://codereview.chromium.org/653083003
diff --git a/bench/nanobench.cpp b/bench/nanobench.cpp
index d06d753..250f438 100644
--- a/bench/nanobench.cpp
+++ b/bench/nanobench.cpp
@@ -70,6 +70,7 @@
DEFINE_string(clip, "0,0,1000,1000", "Clip for SKPs.");
DEFINE_string(scales, "1.0", "Space-separated scales for SKPs.");
DEFINE_bool(bbh, true, "Build a BBH for SKPs?");
+DEFINE_int32(flushEvery, 10, "Flush --outResultsFile every Nth run.");
static SkString humanize(double ms) {
if (FLAGS_verbose) return SkStringPrintf("%llu", (uint64_t)(ms*1e6));
@@ -628,6 +629,7 @@
SkTDArray<Config> configs;
create_configs(&configs);
+ int runs = 0;
BenchmarkStream benchStream;
while (Benchmark* b = benchStream.next()) {
SkAutoTDelete<Benchmark> bench(b);
@@ -680,6 +682,9 @@
log->timer("mean_ms", stats.mean);
log->timer("max_ms", stats.max);
log->timer("stddev_ms", sqrt(stats.var));
+ if (runs++ % FLAGS_flushEvery == 0) {
+ log->flush();
+ }
if (kAutoTuneLoops != FLAGS_loops) {
if (targets.count() == 1) {