mirror of https://github.com/gorhill/uBlock.git
code review domCollapser: avoid duplicates -- help for https://bugzilla.mozilla.org/show_bug.cgi?id=1232354
This commit is contained in:
gorhill
parent
9700c32bc9
commit
1774a7721f
|
|
@ -689,10 +689,9 @@ return domFilterer;
|
|||
|
||||
var domCollapser = (function() {
|
||||
var timer = null;
|
||||
var requestId = 1;
|
||||
var newRequests = [];
|
||||
var pendingRequests = Object.create(null);
|
||||
var pendingRequestCount = 0;
|
||||
var roundtripRequests = [];
|
||||
var src1stProps = {
|
||||
'embed': 'src',
|
||||
'img': 'src',
|
||||
|
|
@ -701,22 +700,14 @@ var domCollapser = (function() {
|
|||
var src2ndProps = {
|
||||
'img': 'srcset'
|
||||
};
|
||||
var netSelectorCacheCount = 0;
|
||||
var messaging = vAPI.messaging;
|
||||
|
||||
var PendingRequest = function(target, tagName, attr) {
|
||||
this.id = requestId++;
|
||||
this.target = target;
|
||||
this.tagName = tagName;
|
||||
this.attr = attr;
|
||||
pendingRequests[this.id] = this;
|
||||
pendingRequestCount += 1;
|
||||
};
|
||||
|
||||
// Because a while ago I have observed constructors are faster than
|
||||
// literal object instanciations.
|
||||
var BouncingRequest = function(id, tagName, url) {
|
||||
this.id = id;
|
||||
this.tagName = tagName;
|
||||
var RoundtripRequest = function(tag, attr, url) {
|
||||
this.tag = tag;
|
||||
this.attr = attr;
|
||||
this.url = url;
|
||||
this.collapse = false;
|
||||
};
|
||||
|
|
@ -736,34 +727,43 @@ var domCollapser = (function() {
|
|||
if ( requests === null || Array.isArray(requests) === false ) {
|
||||
return;
|
||||
}
|
||||
var selectors = [];
|
||||
var i = requests.length;
|
||||
var request, entry, target, value;
|
||||
while ( i-- ) {
|
||||
var selectors = [],
|
||||
netSelectorCacheCountMax = response.netSelectorCacheCountMax,
|
||||
aa = [ null ],
|
||||
request, key, entry, target, value;
|
||||
// Important: process in chronological order -- this ensures the
|
||||
// cached selectors are the most useful ones.
|
||||
for ( var i = 0, ni = requests.length; i < ni; i++ ) {
|
||||
request = requests[i];
|
||||
entry = pendingRequests[request.id];
|
||||
key = request.tag + ' ' + request.attr + ' ' + request.url;
|
||||
entry = pendingRequests[key];
|
||||
if ( entry === undefined ) {
|
||||
continue;
|
||||
}
|
||||
delete pendingRequests[request.id];
|
||||
pendingRequestCount -= 1;
|
||||
|
||||
delete pendingRequests[key];
|
||||
// https://github.com/chrisaljoudi/uBlock/issues/869
|
||||
if ( !request.collapse ) {
|
||||
continue;
|
||||
}
|
||||
|
||||
target = entry.target;
|
||||
|
||||
if ( Array.isArray(entry) === false ) {
|
||||
aa[0] = entry;
|
||||
entry = aa;
|
||||
}
|
||||
for ( var j = 0, nj = entry.length; j < nj; j++ ) {
|
||||
target = entry[j];
|
||||
// https://github.com/chrisaljoudi/uBlock/issues/399
|
||||
// Never remove elements from the DOM, just hide them
|
||||
target.style.setProperty('display', 'none', 'important');
|
||||
target.hidden = true;
|
||||
|
||||
// https://github.com/chrisaljoudi/uBlock/issues/1048
|
||||
// Use attribute to construct CSS rule
|
||||
if ( (value = target.getAttribute(entry.attr)) ) {
|
||||
selectors.push(entry.tagName + '[' + entry.attr + '="' + value + '"]');
|
||||
if (
|
||||
netSelectorCacheCount <= netSelectorCacheCountMax &&
|
||||
(value = target.getAttribute(request.attr))
|
||||
) {
|
||||
selectors.push(request.tag + '[' + request.attr + '="' + value + '"]');
|
||||
netSelectorCacheCount += 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
if ( selectors.length !== 0 ) {
|
||||
|
|
@ -777,11 +777,6 @@ var domCollapser = (function() {
|
|||
}
|
||||
);
|
||||
}
|
||||
// Renew map: I believe that even if all properties are deleted, an
|
||||
// object will still use more memory than a brand new one.
|
||||
if ( pendingRequestCount === 0 ) {
|
||||
pendingRequests = Object.create(null);
|
||||
}
|
||||
};
|
||||
|
||||
var send = function() {
|
||||
|
|
@ -792,14 +787,14 @@ var domCollapser = (function() {
|
|||
what: 'filterRequests',
|
||||
pageURL: window.location.href,
|
||||
pageHostname: window.location.hostname,
|
||||
requests: newRequests
|
||||
requests: roundtripRequests
|
||||
}, onProcessed
|
||||
);
|
||||
newRequests = [];
|
||||
};
|
||||
|
||||
var process = function(delay) {
|
||||
if ( newRequests.length === 0 ) {
|
||||
if ( roundtripRequests.length === 0 ) {
|
||||
return;
|
||||
}
|
||||
if ( delay === 0 ) {
|
||||
|
|
@ -814,8 +809,8 @@ var domCollapser = (function() {
|
|||
// for iframes.
|
||||
|
||||
var add = function(target) {
|
||||
var tagName = target.localName;
|
||||
var prop = src1stProps[tagName];
|
||||
var tag = target.localName;
|
||||
var prop = src1stProps[tag];
|
||||
if ( prop === undefined ) {
|
||||
return;
|
||||
}
|
||||
|
|
@ -823,7 +818,7 @@ var domCollapser = (function() {
|
|||
// Do not remove fragment from src URL
|
||||
var src = target[prop];
|
||||
if ( typeof src !== 'string' || src.length === 0 ) {
|
||||
prop = src2ndProps[tagName];
|
||||
prop = src2ndProps[tag];
|
||||
if ( prop === undefined ) {
|
||||
return;
|
||||
}
|
||||
|
|
@ -837,8 +832,16 @@ var domCollapser = (function() {
|
|||
if ( src.lastIndexOf('data:', 0) === 0 ) {
|
||||
src = src.slice(0, 255);
|
||||
}
|
||||
var req = new PendingRequest(target, tagName, prop);
|
||||
newRequests.push(new BouncingRequest(req.id, tagName, src));
|
||||
var key = tag + ' ' + prop + ' ' + src,
|
||||
entry = pendingRequests[key];
|
||||
if ( entry === undefined ) {
|
||||
pendingRequests[key] = target;
|
||||
roundtripRequests.push(new RoundtripRequest(tag, prop, src));
|
||||
} else if ( Array.isArray(entry) ) {
|
||||
entry.push(target);
|
||||
} else {
|
||||
pendingRequests[key] = [ entry, target ];
|
||||
}
|
||||
};
|
||||
|
||||
var addMany = function(targets) {
|
||||
|
|
@ -892,8 +895,16 @@ var domCollapser = (function() {
|
|||
if ( src.lastIndexOf('http', 0) !== 0 ) {
|
||||
return;
|
||||
}
|
||||
var req = new PendingRequest(iframe, 'iframe', 'src');
|
||||
newRequests.push(new BouncingRequest(req.id, 'iframe', src));
|
||||
var key = 'iframe' + ' ' + 'src' + ' ' + src,
|
||||
entry = pendingRequests[key];
|
||||
if ( entry === undefined ) {
|
||||
pendingRequests[key] = iframe;
|
||||
roundtripRequests.push(new RoundtripRequest('iframe', 'src', src));
|
||||
} else if ( Array.isArray(entry) ) {
|
||||
entry.push(iframe);
|
||||
} else {
|
||||
pendingRequests[key] = [ entry, iframe ];
|
||||
}
|
||||
};
|
||||
|
||||
var addIFrames = function(iframes) {
|
||||
|
|
@ -1453,8 +1464,8 @@ skip-survey=false: survey-phase-1 => survey-phase-2 => survey-phase-3 => commit
|
|||
// http://jsperf.com/queryselectorall-vs-getelementsbytagname/145
|
||||
|
||||
(function() {
|
||||
var collapser = domCollapser;
|
||||
var elems = document.images || document.getElementsByTagName('img'),
|
||||
var collapser = domCollapser,
|
||||
elems = document.images || document.getElementsByTagName('img'),
|
||||
i = elems.length, elem;
|
||||
while ( i-- ) {
|
||||
elem = elems[i];
|
||||
|
|
|
|||
|
|
@ -458,8 +458,8 @@ SelectorCacheEntry.factory = function() {
|
|||
|
||||
/******************************************************************************/
|
||||
|
||||
SelectorCacheEntry.prototype.netLowWaterMark = 20;
|
||||
SelectorCacheEntry.prototype.netHighWaterMark = 30;
|
||||
var netSelectorCacheLowWaterMark = 20;
|
||||
var netSelectorCacheHighWaterMark = 30;
|
||||
|
||||
/******************************************************************************/
|
||||
|
||||
|
|
@ -507,13 +507,13 @@ SelectorCacheEntry.prototype.addNet = function(selectors) {
|
|||
// Net request-derived selectors: I limit the number of cached selectors,
|
||||
// as I expect cases where the blocked net-requests are never the
|
||||
// exact same URL.
|
||||
if ( this.netCount < this.netHighWaterMark ) {
|
||||
if ( this.netCount < netSelectorCacheHighWaterMark ) {
|
||||
return;
|
||||
}
|
||||
var dict = this.net;
|
||||
var keys = Object.keys(dict).sort(function(a, b) {
|
||||
return dict[b] - dict[a];
|
||||
}).slice(this.netLowWaterMark);
|
||||
}).slice(netSelectorCacheLowWaterMark);
|
||||
var i = keys.length;
|
||||
while ( i-- ) {
|
||||
delete dict[keys[i]];
|
||||
|
|
@ -664,6 +664,7 @@ var FilterContainer = function() {
|
|||
this.selectorCachePruneDelay = 10 * 60 * 1000; // 15 minutes
|
||||
this.selectorCacheAgeMax = 120 * 60 * 1000; // 120 minutes
|
||||
this.selectorCacheCountMin = 25;
|
||||
this.netSelectorCacheCountMax = netSelectorCacheHighWaterMark;
|
||||
this.selectorCacheTimer = null;
|
||||
this.reHasUnicode = /[^\x00-\x7F]/;
|
||||
this.punycode = punycode;
|
||||
|
|
|
|||
|
|
@ -484,7 +484,7 @@ var filterRequests = function(pageStore, details) {
|
|||
context.requestURL = punycodeURL(request.url);
|
||||
context.requestHostname = hostnameFromURI(context.requestURL);
|
||||
}
|
||||
context.requestType = tagNameToRequestTypeMap[request.tagName];
|
||||
context.requestType = tagNameToRequestTypeMap[request.tag];
|
||||
r = pageStore.filterRequest(context);
|
||||
if ( typeof r !== 'string' || r.charAt(1) !== 'b' ) {
|
||||
continue;
|
||||
|
|
@ -540,7 +540,8 @@ var onMessage = function(request, sender, callback) {
|
|||
case 'filterRequests':
|
||||
response = {
|
||||
shutdown: !pageStore || !pageStore.getNetFilteringSwitch(),
|
||||
result: null
|
||||
result: null,
|
||||
netSelectorCacheCountMax: µb.cosmeticFilteringEngine.netSelectorCacheCountMax
|
||||
};
|
||||
if ( !response.shutdown ) {
|
||||
response.result = filterRequests(pageStore, request);
|
||||
|
|
|
|||
Loading…
Reference in New Issue