diff options
| -rw-r--r-- | bench/ControlBench.cpp | 26 | ||||
| -rw-r--r-- | gyp/bench.gypi | 1 |
2 files changed, 27 insertions, 0 deletions
diff --git a/bench/ControlBench.cpp b/bench/ControlBench.cpp new file mode 100644 index 0000000000..8c1177a5e3 --- /dev/null +++ b/bench/ControlBench.cpp @@ -0,0 +1,26 @@ +/* + * Copyright 2015 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include "Benchmark.h" + +// This benchmark's runtime should be fairly constant for a given machine, +// so it can be used as a baseline to control for thermal or other throttling. + +struct ControlBench : public Benchmark { + const char* onGetName() override { return "control"; } + bool isSuitableFor(Backend backend) override { return backend == kNonRendering_Backend; } + + void onDraw(const int loops, SkCanvas*) override { + // Nothing terribly useful: force a memory read, a memory write, and some math. + volatile uint32_t rand = 0; + for (int i = 0; i < 1000*loops; i++) { + rand *= 1664525; + rand += 1013904223; + } + } +}; +DEF_BENCH(return new ControlBench;) diff --git a/gyp/bench.gypi b/gyp/bench.gypi index 3d041f6314..3e87f6bc8c 100644 --- a/gyp/bench.gypi +++ b/gyp/bench.gypi @@ -45,6 +45,7 @@ '../bench/ColorCubeBench.cpp', '../bench/ColorFilterBench.cpp', '../bench/ColorPrivBench.cpp', + '../bench/ControlBench.cpp', '../bench/CoverageBench.cpp', '../bench/DashBench.cpp', '../bench/DeferredSurfaceCopyBench.cpp', |