[tint][benchmark] Use Chrome Perf output format
The benchmark binary needs to write its output in a specific format in
order to be used on the perf waterfall.
Bug: 42251293
Change-Id: I895c8bd0eb312c6cc886ddce5e4bbac27ce8837e
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/200514
Reviewed-by: dan sinclair <dsinclair@chromium.org>
Commit-Queue: James Price <jrprice@google.com>
diff --git a/src/tint/cmd/bench/main_bench.cc b/src/tint/cmd/bench/main_bench.cc
index 3e2a0f2..61c2f81 100644
--- a/src/tint/cmd/bench/main_bench.cc
+++ b/src/tint/cmd/bench/main_bench.cc
@@ -25,7 +25,61 @@
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#include <iomanip>
+#include <iostream>
+
#include "src/tint/cmd/bench/bench.h"
+#include "src/tint/utils/text/string.h"
+
+/// ChromePerfReporter is a custom benchmark reporter used to output benchmark results in the format
+/// required for the Chrome Perf waterfall, as described here:
+/// [chromium]//src/tools/perf/generate_legacy_perf_dashboard_json.py
+class ChromePerfReporter final : public benchmark::BenchmarkReporter {
+ public:
+ bool ReportContext([[maybe_unused]] const Context& context) override { return true; }
+
+ void ReportRunsConfig([[maybe_unused]] double min_time,
+ [[maybe_unused]] bool has_explicit_iters,
+ [[maybe_unused]] benchmark::IterationCount iters) override {}
+
+ void ReportRuns(const std::vector<Run>& report) override {
+ for (auto& run : report) {
+ auto fullname = run.benchmark_name();
+
+ if (run.skipped) {
+ std::cout << "FAILED " << fullname << ": " << run.skip_message << "\n";
+ continue;
+ }
+
+ auto graph_and_trace = tint::Split(fullname, "/");
+ TINT_ASSERT(graph_and_trace.Length() <= 2u);
+ if (graph_and_trace.Length() == 1u) {
+ graph_and_trace.Push(graph_and_trace[0]);
+ graph_and_trace[0] = "TintInternals";
+ }
+
+ std::cout << "*RESULT " << graph_and_trace[0] << ": " << graph_and_trace[1] << "= "
+ << std::fixed << run.GetAdjustedRealTime() << " ";
+ switch (run.time_unit) {
+ case benchmark::kNanosecond:
+ std::cout << "ns";
+ break;
+ case benchmark::kMicrosecond:
+ std::cout << "us";
+ break;
+ case benchmark::kMillisecond:
+ std::cout << "ms";
+ break;
+ case benchmark::kSecond:
+ std::cout << "s";
+ break;
+ }
+ std::cout << "\n";
+ }
+ }
+
+ void Finalize() override {}
+};
int main(int argc, char** argv) {
benchmark::Initialize(&argc, argv);
@@ -35,5 +89,5 @@
if (!tint::bench::Initialize()) {
return 1;
}
- benchmark::RunSpecifiedBenchmarks();
+ benchmark::RunSpecifiedBenchmarks(new ChromePerfReporter);
}
