gecko-dev/dom/performance/PerformanceTiming.h
Andrea Marchesini 64734bf74c Bug 1278838 - Remove separate worker binding for Performance API, r=smaug
--HG--
rename : dom/performance/nsPerformance.cpp => dom/performance/Performance.cpp
rename : dom/performance/nsPerformance.h => dom/performance/Performance.h
rename : dom/workers/Performance.cpp => dom/performance/PerformanceWorker.cpp
rename : dom/workers/Performance.h => dom/performance/PerformanceWorker.h
2016-06-09 19:04:42 +02:00

279 lines
9.1 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 mozilla_dom_PerformanceTiming_h
#define mozilla_dom_PerformanceTiming_h
#include "mozilla/Attributes.h"
#include "nsContentUtils.h"
#include "nsDOMNavigationTiming.h"
#include "nsWrapperCache.h"
#include "Performance.h"
class nsIHttpChannel;
class nsITimedChannel;
namespace mozilla {
namespace dom {
// Script "performance.timing" object
class PerformanceTiming final : public nsWrapperCache
{
public:
/**
* @param aPerformance
* The performance object (the JS parent).
* This will allow access to "window.performance.timing" attribute for
* the navigation timing (can't be null).
* @param aChannel
* An nsITimedChannel used to gather all the networking timings by both
* the navigation timing and the resource timing (can't be null).
* @param aHttpChannel
* An nsIHttpChannel (the resource's http channel).
* This will be used by the resource timing cross-domain check
* algorithm.
* Argument is null for the navigation timing (navigation timing uses
* another algorithm for the cross-domain redirects).
* @param aZeroTime
* The offset that will be added to the timestamp of each event. This
* argument should be equal to performance.navigationStart for
* navigation timing and "0" for the resource timing.
*/
PerformanceTiming(Performance* aPerformance,
nsITimedChannel* aChannel,
nsIHttpChannel* aHttpChannel,
DOMHighResTimeStamp aZeroTime);
NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(PerformanceTiming)
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(PerformanceTiming)
nsDOMNavigationTiming* GetDOMTiming() const
{
return mPerformance->GetDOMTiming();
}
Performance* GetParentObject() const
{
return mPerformance;
}
/**
* @param aStamp
* The TimeStamp recorded for a specific event. This TimeStamp can
* be null.
* @return the duration of an event with a given TimeStamp, relative to the
* navigationStart TimeStamp (the moment the user landed on the
* page), if the given TimeStamp is valid. Otherwise, it will return
* the FetchStart timing value.
*/
inline DOMHighResTimeStamp TimeStampToDOMHighResOrFetchStart(TimeStamp aStamp)
{
return (!aStamp.IsNull())
? TimeStampToDOMHighRes(aStamp)
: FetchStartHighRes();
}
/**
* The nsITimedChannel records an absolute timestamp for each event.
* The nsDOMNavigationTiming will record the moment when the user landed on
* the page. This is a window.performance unique timestamp, so it can be used
* for all the events (navigation timing and resource timing events).
*
* The algorithm operates in 2 steps:
* 1. The first step is to subtract the two timestamps: the argument (the
* envet's timesramp) and the navigation start timestamp. This will result in
* a relative timestamp of the event (relative to the navigation start -
* window.performance.timing.navigationStart).
* 2. The second step is to add any required offset (the mZeroTime). For now,
* this offset value is either 0 (for the resource timing), or equal to
* "performance.navigationStart" (for navigation timing).
* For the resource timing, mZeroTime is set to 0, causing the result to be a
* relative time.
* For the navigation timing, mZeroTime is set to "performance.navigationStart"
* causing the result be an absolute time.
*
* @param aStamp
* The TimeStamp recorded for a specific event. This TimeStamp can't
* be null.
* @return number of milliseconds value as one of:
* - relative to the navigation start time, time the user has landed on the
* page
* - an absolute wall clock time since the unix epoch
*/
inline DOMHighResTimeStamp TimeStampToDOMHighRes(TimeStamp aStamp) const
{
MOZ_ASSERT(!aStamp.IsNull());
TimeDuration duration =
aStamp - GetDOMTiming()->GetNavigationStartTimeStamp();
return duration.ToMilliseconds() + mZeroTime;
}
virtual JSObject* WrapObject(JSContext *cx,
JS::Handle<JSObject*> aGivenProto) override;
// PerformanceNavigation WebIDL methods
DOMTimeMilliSec NavigationStart() const
{
if (!nsContentUtils::IsPerformanceTimingEnabled()) {
return 0;
}
return GetDOMTiming()->GetNavigationStart();
}
DOMTimeMilliSec UnloadEventStart()
{
if (!nsContentUtils::IsPerformanceTimingEnabled()) {
return 0;
}
return GetDOMTiming()->GetUnloadEventStart();
}
DOMTimeMilliSec UnloadEventEnd()
{
if (!nsContentUtils::IsPerformanceTimingEnabled()) {
return 0;
}
return GetDOMTiming()->GetUnloadEventEnd();
}
uint16_t GetRedirectCount() const;
// Checks if the resource is either same origin as the page that started
// the load, or if the response contains the Timing-Allow-Origin header
// with a value of * or matching the domain of the loading Principal
bool CheckAllowedOrigin(nsIHttpChannel* aResourceChannel, nsITimedChannel* aChannel);
// Cached result of CheckAllowedOrigin. If false, security sensitive
// attributes of the resourceTiming object will be set to 0
bool TimingAllowed() const;
// If this is false the values of redirectStart/End will be 0
// This is false if no redirects occured, or if any of the responses failed
// the timing-allow-origin check in HttpBaseChannel::TimingAllowCheck
bool ShouldReportCrossOriginRedirect() const;
// High resolution (used by resource timing)
DOMHighResTimeStamp FetchStartHighRes();
DOMHighResTimeStamp RedirectStartHighRes();
DOMHighResTimeStamp RedirectEndHighRes();
DOMHighResTimeStamp DomainLookupStartHighRes();
DOMHighResTimeStamp DomainLookupEndHighRes();
DOMHighResTimeStamp ConnectStartHighRes();
DOMHighResTimeStamp ConnectEndHighRes();
DOMHighResTimeStamp RequestStartHighRes();
DOMHighResTimeStamp ResponseStartHighRes();
DOMHighResTimeStamp ResponseEndHighRes();
// Low resolution (used by navigation timing)
DOMTimeMilliSec FetchStart();
DOMTimeMilliSec RedirectStart();
DOMTimeMilliSec RedirectEnd();
DOMTimeMilliSec DomainLookupStart();
DOMTimeMilliSec DomainLookupEnd();
DOMTimeMilliSec ConnectStart();
DOMTimeMilliSec ConnectEnd();
DOMTimeMilliSec RequestStart();
DOMTimeMilliSec ResponseStart();
DOMTimeMilliSec ResponseEnd();
DOMTimeMilliSec DomLoading()
{
if (!nsContentUtils::IsPerformanceTimingEnabled()) {
return 0;
}
return GetDOMTiming()->GetDomLoading();
}
DOMTimeMilliSec DomInteractive() const
{
if (!nsContentUtils::IsPerformanceTimingEnabled()) {
return 0;
}
return GetDOMTiming()->GetDomInteractive();
}
DOMTimeMilliSec DomContentLoadedEventStart() const
{
if (!nsContentUtils::IsPerformanceTimingEnabled()) {
return 0;
}
return GetDOMTiming()->GetDomContentLoadedEventStart();
}
DOMTimeMilliSec DomContentLoadedEventEnd() const
{
if (!nsContentUtils::IsPerformanceTimingEnabled()) {
return 0;
}
return GetDOMTiming()->GetDomContentLoadedEventEnd();
}
DOMTimeMilliSec DomComplete() const
{
if (!nsContentUtils::IsPerformanceTimingEnabled()) {
return 0;
}
return GetDOMTiming()->GetDomComplete();
}
DOMTimeMilliSec LoadEventStart() const
{
if (!nsContentUtils::IsPerformanceTimingEnabled()) {
return 0;
}
return GetDOMTiming()->GetLoadEventStart();
}
DOMTimeMilliSec LoadEventEnd() const
{
if (!nsContentUtils::IsPerformanceTimingEnabled()) {
return 0;
}
return GetDOMTiming()->GetLoadEventEnd();
}
private:
~PerformanceTiming();
bool IsInitialized() const;
void InitializeTimingInfo(nsITimedChannel* aChannel);
RefPtr<Performance> mPerformance;
DOMHighResTimeStamp mFetchStart;
// This is an offset that will be added to each timing ([ms] resolution).
// There are only 2 possible values: (1) logicaly equal to navigationStart
// TimeStamp (results are absolute timstamps - wallclock); (2) "0" (results
// are relative to the navigation start).
DOMHighResTimeStamp mZeroTime;
TimeStamp mAsyncOpen;
TimeStamp mRedirectStart;
TimeStamp mRedirectEnd;
TimeStamp mDomainLookupStart;
TimeStamp mDomainLookupEnd;
TimeStamp mConnectStart;
TimeStamp mConnectEnd;
TimeStamp mRequestStart;
TimeStamp mResponseStart;
TimeStamp mCacheReadStart;
TimeStamp mResponseEnd;
TimeStamp mCacheReadEnd;
uint16_t mRedirectCount;
bool mTimingAllowed;
bool mAllRedirectsSameOrigin;
bool mInitialized;
// If the resourceTiming object should have non-zero redirectStart and
// redirectEnd attributes. It is false if there were no redirects, or if
// any of the responses didn't pass the timing-allow-check
bool mReportCrossOriginRedirect;
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_PerformanceTiming_h