Index: systrace/atrace_helper/jni/time_utils.h |
diff --git a/systrace/atrace_helper/jni/time_utils.h b/systrace/atrace_helper/jni/time_utils.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..2319601879195d41d4be809a4f90454a72582ecb |
--- /dev/null |
+++ b/systrace/atrace_helper/jni/time_utils.h |
@@ -0,0 +1,34 @@ |
+// Copyright 2017 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef TIME_UTILS_H_ |
+#define TIME_UTILS_H_ |
+ |
+#include <stdint.h> |
+ |
+namespace time_utils { |
+ |
+uint64_t GetTimestamp(); |
+ |
+class PeriodicTimer { |
+ public: |
+ PeriodicTimer(int interval_ms); |
+ ~PeriodicTimer(); |
+ |
+ void Start(); |
+ void Stop(); |
+ // Wait for next tick. Returns false if interrupted by Stop() or not started. |
+ bool Wait(); |
+ |
+ private: |
+ PeriodicTimer(const PeriodicTimer&) = delete; |
+ void operator=(const PeriodicTimer&) = delete; |
+ |
+ const int interval_ms_; |
+ int timer_fd_; |
+}; |
+ |
+} // namespace time_utils |
+ |
+#endif // TIME_UTILS_ |