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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef CPOWTIMER_H
#define CPOWTIMER_H
#include "prinrval.h"
#include "jsapi.h"
/**
* A stopwatch measuring the duration of a CPOW call.
*
* As the process is consuming neither user time nor system time
* during a CPOW call, we measure such durations using wallclock time.
*
* This stopwatch is active iff JSRuntime::stopwatch.isActive is set.
* Upon destruction, update JSRuntime::stopwatch.data.totalCPOWTime.
*/
class MOZ_RAII CPOWTimer final {
public:
explicit inline CPOWTimer(JSContext* cx MOZ_GUARD_OBJECT_NOTIFIER_PARAM);
~CPOWTimer();
private:
MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER
/**
* The context in which this timer was created, or `nullptr` if
* CPOW monitoring was off when the timer was created.
*/
JSContext* cx_;
/**
* The instant at which the stopwatch was started. Undefined
* if CPOW monitoring was off when the timer was created.
*/
int64_t startInterval_;
};
#endif
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