| // Copyright 2021 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 COMPONENTS_POWER_METRICS_MACH_TIME_MAC_H_ |
| #define COMPONENTS_POWER_METRICS_MACH_TIME_MAC_H_ |
| |
| #include <mach/mach_time.h> |
| #include <stdint.h> |
| |
| namespace power_metrics { |
| |
| // Converts |mach_time| to nanoseconds, using the multiplier in |mach_timebase|. |
| uint64_t MachTimeToNs(uint64_t mach_time, |
| const mach_timebase_info_data_t& mach_timebase); |
| |
| // Retrieves the |mach_timebase| to convert |mach_time| obtained on this system |
| // to nanoseconds. |
| mach_timebase_info_data_t GetSystemMachTimeBase(); |
| |
| } // namespace power_metrics |
| |
| #endif // COMPONENTS_POWER_METRICS_MACH_TIME_MAC_H_ |
