52 lines
1.4 KiB
C++
52 lines
1.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "Uptime.h"
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#include "mozilla/Now.h"
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using namespace mozilla;
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namespace {
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static Maybe<uint64_t> mStartExcludingSuspendMs;
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static Maybe<uint64_t> mStartIncludingSuspendMs;
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}; // anonymous namespace
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namespace mozilla {
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void InitializeUptime() {
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MOZ_RELEASE_ASSERT(mStartIncludingSuspendMs.isNothing() &&
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mStartExcludingSuspendMs.isNothing(),
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"Must not be called more than once");
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mStartIncludingSuspendMs = NowIncludingSuspendMs();
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mStartExcludingSuspendMs = NowExcludingSuspendMs();
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}
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Maybe<uint64_t> ProcessUptimeMs() {
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if (!mStartIncludingSuspendMs) {
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return Nothing();
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}
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Maybe<uint64_t> maybeNow = NowIncludingSuspendMs();
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if (!maybeNow) {
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return Nothing();
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}
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return Some(maybeNow.value() - mStartIncludingSuspendMs.value());
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}
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Maybe<uint64_t> ProcessUptimeExcludingSuspendMs() {
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if (!mStartExcludingSuspendMs) {
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return Nothing();
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}
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Maybe<uint64_t> maybeNow = NowExcludingSuspendMs();
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if (!maybeNow) {
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return Nothing();
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}
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return Some(maybeNow.value() - mStartExcludingSuspendMs.value());
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}
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}; // namespace mozilla
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