| // |
| // Copyright (C) 2022 The Android Open Source Project |
| // |
| // 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. |
| |
| //! Monotonic clock implementation. |
| |
| use kmr_common::crypto; |
| |
| /// Monotonic clock. |
| #[derive(Default)] |
| pub struct StdClock; |
| |
| impl crypto::MonotonicClock for StdClock { |
| fn now(&self) -> crypto::MillisecondsSinceEpoch { |
| let mut time = libc::timespec { tv_sec: 0, tv_nsec: 0 }; |
| // Safety: `time` is a valid structure. |
| let rc = |
| unsafe { libc::clock_gettime(libc::CLOCK_BOOTTIME, &mut time as *mut libc::timespec) }; |
| if rc < 0 { |
| log::warn!("failed to get time!"); |
| return crypto::MillisecondsSinceEpoch(0); |
| } |
| crypto::MillisecondsSinceEpoch((time.tv_sec * 1000) + (time.tv_nsec / 1000 / 1000)) |
| } |
| } |