43 lines
1.1 KiB
C++
43 lines
1.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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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 "jsfriendapi.h"
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#include "nsContentUtils.h"
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#include "CPOWTimer.h"
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#include "jsapi.h"
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CPOWTimer::CPOWTimer(JSContext* cx MOZ_GUARD_OBJECT_NOTIFIER_PARAM_IN_IMPL)
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: cx_(nullptr)
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, startInterval_(0)
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{
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MOZ_GUARD_OBJECT_NOTIFIER_INIT;
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if (!js::GetStopwatchIsMonitoringCPOW(cx))
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return;
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cx_ = cx;
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startInterval_ = JS_Now();
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}
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CPOWTimer::~CPOWTimer()
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{
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if (!cx_) {
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// Monitoring was off when we started the timer.
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return;
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}
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if (!js::GetStopwatchIsMonitoringCPOW(cx_)) {
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// Monitoring has been deactivated while we were in the timer.
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return;
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}
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const int64_t endInterval = JS_Now();
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if (endInterval <= startInterval_) {
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// Do not assume monotonicity.
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return;
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}
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js::AddCPOWPerformanceDelta(cx_, endInterval - startInterval_);
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}
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