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// Copyright 2018 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.
#include "base/time/time_override.h"
namespace base {
namespace subtle {
// static
bool ScopedTimeClockOverrides::overrides_active_ = false;
ScopedTimeClockOverrides::ScopedTimeClockOverrides(
TimeNowFunction time_override,
TimeTicksNowFunction time_ticks_override,
ThreadTicksNowFunction thread_ticks_override) {
DCHECK(!overrides_active_);
overrides_active_ = true;
if (time_override) {
internal::g_time_now_function.store(time_override,
std::memory_order_relaxed);
internal::g_time_now_from_system_time_function.store(
time_override, std::memory_order_relaxed);
}
if (time_ticks_override) {
internal::g_time_ticks_now_function.store(time_ticks_override,
std::memory_order_relaxed);
}
if (thread_ticks_override) {
internal::g_thread_ticks_now_function.store(thread_ticks_override,
std::memory_order_relaxed);
}
}
ScopedTimeClockOverrides::~ScopedTimeClockOverrides() {
internal::g_time_now_function.store(&TimeNowIgnoringOverride);
internal::g_time_now_from_system_time_function.store(
&TimeNowFromSystemTimeIgnoringOverride);
internal::g_time_ticks_now_function.store(&TimeTicksNowIgnoringOverride);
internal::g_thread_ticks_now_function.store(&ThreadTicksNowIgnoringOverride);
overrides_active_ = false;
}
} // namespace subtle
} // namespace base
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