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Add workerStart attribute to measure SW startup #18

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merged 4 commits into from
Apr 3, 2015
Merged

Add workerStart attribute to measure SW startup #18

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ea3cbca
first run at workerStart attribute
igrigorik Mar 12, 2015
b604b3b
drop HTTP GET clause in processing
igrigorik Mar 12, 2015
70adbb3
clarify: set workerStart to zero
igrigorik Mar 12, 2015
9b63c9a
drop optional on workerStart
igrigorik Mar 26, 2015
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23 changes: 8 additions & 15 deletions index.html
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Expand Up @@ -356,6 +356,9 @@ <h3>The <code>PerformanceResourceTiming</code> Interface</h3>
<p>Note that this attribute is intended to identify the network protocol in use for the fetch regardless of how it was actually negotiated; that is, even if ALPN is not used to negotiate the network protocol, this attribute still uses the ALPN Protocol ID's to indicate the protocol in use.</p>
</dd>

<dt>readonly attribute DOMHighResTimeStamp workerStart</dt>
<dd>If the current browsing or worker context's have an <a href="http://www.w3.org/TR/service-workers/#dfn-containing-service-worker-registration">active worker</a> ([[!SERVICE-WORKERS]]), this atribute MUST return the time immediately before the user agent <a href="http://www.w3.org/TR/service-workers/#service-worker-concept">runs the worker</a> required to service the request, or if the worker is available, the time immediately before the user agent <a href="http://www.w3.org/TR/service-workers/#on-fetch-request-algorithm">fires an event named `fetch`</a> at the <a href="http://www.w3.org/TR/service-workers/#dfn-active-worker">active worker</a>. Otherwise, if there is no active worker this attribute MUST return zero.</dd>

<dt>readonly attribute DOMHighResTimeStamp redirectStart</dt>
<dd>
<p>If there are HTTP redirects or <a href="http://www.w3.org/TR/html5/infrastructure.html#concept-http-equivalent-codes" title='HTTP response codes equivalence'>equivalent</a>
Expand Down Expand Up @@ -692,21 +695,11 @@ <h3>Processing Model</h3>
</li>
<li>Record the initiator of the resource in <a href="#widl-PerformanceResourceTiming-initiatorType">initiatorType</a>.
</li>
<li>Record the <a href="http://www.w3.org/TR/html5/infrastructure.html#resolve-a-url">resolved URL</a> of the requested resource in <a href="#widl-PerformanceResourceTiming-name">name</a>.
</li>
<li id="step-fetch-start">If the new resource is to be fetched using HTTP GET or
<a href="http://www.w3.org/TR/html5/infrastructure.html#concept-http-equivalent-codes" title='HTTP response codes equivalence'>equivalent</a>,
immediately before a user agent checks with the <a href="http://www.w3.org/TR/html5/browsers.html#relevant-application-cache" title='relevant application cache'>
relevant application caches</a>, record the current time as <a href="#widl-PerformanceResourceTiming-fetchStart">fetchStart</a>. Otherwise, immediately
before a user agent starts the <a href="http://www.w3.org/TR/html5/infrastructure.html#fetch" title='fetch'>
fetching process</a>, record the current time as <a href="#widl-PerformanceResourceTiming-fetchStart">
fetchStart</a>. Let
<a href="#widl-PerformanceResourceTiming-domainLookupStart">domainLookupStart</a>,
<a href="#widl-PerformanceResourceTiming-domainLookupEnd">domainLookupEnd</a>,
<a href="#widl-PerformanceResourceTiming-connectStart">connectStart</a> and
<a href="#widl-PerformanceResourceTiming-connectEnd">connectEnd</a> be the same value as
<a href="#widl-PerformanceResourceTiming-fetchStart">fetchStart</a>.
</li>

<li>Record the <a href="http://www.w3.org/TR/html5/infrastructure.html#resolve-a-url">resolved URL</a> of the requested resource in <a href="#widl-PerformanceResourceTiming-name">name</a>. If there is an <a href="http://www.w3.org/TR/service-workers/#dfn-containing-service-worker-registration">active worker</a> ([[!SERVICE-WORKERS]]) matching the current browsing or worker context's, immediately before the user agent <a href="http://www.w3.org/TR/service-workers/#service-worker-concept">runs the worker</a> record the time as <a href="#widl-PerformanceResourceTiming-workerStart">workerStart</a>, or if the worker is already available, immediately before the <a href="http://www.w3.org/TR/service-workers/#on-fetch-request-algorithm">event named `fetch` is fired</a> at the active worker record the time as <a href="#widl-PerformanceResourceTiming-workerStart">workerStart</a>. Otherwise, if there is no matching <a href="http://www.w3.org/TR/service-workers/#dfn-service-worker-registration">service worker registration</a>, set <a href="#widl-PerformanceResourceTiming-workerStart">workerStart</a> value to zero.</li>

<li id="step-fetch-start">Immediately before a user agent starts the <a href="http://www.w3.org/TR/html5/infrastructure.html#fetch" title='fetch'>fetching process</a>, record the current time as <a href="#widl-PerformanceResourceTiming-fetchStart">fetchStart</a>. Let <a href="#widl-PerformanceResourceTiming-domainLookupStart">domainLookupStart</a>, <a href="#widl-PerformanceResourceTiming-domainLookupEnd">domainLookupEnd</a>, <a href="#widl-PerformanceResourceTiming-connectStart">connectStart</a> and <a href="#widl-PerformanceResourceTiming-connectEnd">connectEnd</a> be the same value as <a href="#widl-PerformanceResourceTiming-fetchStart">fetchStart</a>.</li>

<li id="step-collection-start">If the user agent is to reuse the data from another existing or completed <a href="http://www.w3.org/TR/html5/infrastructure.html#fetch">fetch</a> initiated from the current document, abort the
remaining steps.
</li>
Expand Down