37 lines
1.3 KiB
Rust
37 lines
1.3 KiB
Rust
//
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// Copyright (C) 2022 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//! Monotonic clock implementation.
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use kmr_common::crypto;
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/// Monotonic clock.
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#[derive(Default)]
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pub struct StdClock;
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impl crypto::MonotonicClock for StdClock {
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fn now(&self) -> crypto::MillisecondsSinceEpoch {
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let mut time = libc::timespec { tv_sec: 0, tv_nsec: 0 };
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// Safety: `time` is a valid structure.
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let rc =
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unsafe { libc::clock_gettime(libc::CLOCK_BOOTTIME, &mut time as *mut libc::timespec) };
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if rc < 0 {
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log::warn!("failed to get time!");
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return crypto::MillisecondsSinceEpoch(0);
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}
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crypto::MillisecondsSinceEpoch((time.tv_sec * 1000) + (time.tv_nsec / 1000 / 1000))
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}
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}
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