add timer class

1 files changed, 55 insertions, 0 deletions

diff --git a/src/support/timing.h b/src/support/timing.h
new file mode 100644
index 000000000..e8b48ec5f
--- /dev/null
+++ b/src/support/timing.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2016 WebAssembly Community Group participants
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+//
+// Timing helper
+//
+
+#ifndef wasm_support_timing_h
+#define wasm_support_timing_h
+
+#include <chrono>
+
+namespace wasm {
+
+class Timer {
+  std::string name;
+  std::chrono::high_resolution_clock::time_point startTime;
+  double total = 0;
+
+public:
+  Timer(std::string name) : name(name) {}
+
+  void start() {
+    startTime = std::chrono::high_resolution_clock::now();
+  }
+
+  void stop() {
+    total += std::chrono::duration<double>(std::chrono::high_resolution_clock::now() - startTime).count();
+  }
+
+  double getTotal() {
+    return total;
+  }
+
+  void dump() {
+    std::cerr << "<Timer " << name << ": " << getTotal() << ">\n";
+  }
+};
+
+} // namespace wasm
+
+#endif  // wasm_support_timing_h