mirror of
https://github.com/gorhill/uMatrix.git
synced 2024-06-13 15:54:54 +12:00
93 lines
2.8 KiB
JavaScript
93 lines
2.8 KiB
JavaScript
/*******************************************************************************
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uMatrix - a browser extension to block requests.
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Copyright (C) 2015-2017 Raymond Hill
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see {http://www.gnu.org/licenses/}.
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Home: https://github.com/gorhill/uBlock
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*/
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'use strict';
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/******************************************************************************/
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/******************************************************************************/
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µMatrix.logger = (function() {
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var LogEntry = function(args) {
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this.init(args);
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};
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LogEntry.prototype.init = function(args) {
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this.tstamp = Date.now();
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this.tab = args[0] || '';
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this.cat = args[1] || '';
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this.d0 = args[2];
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this.d1 = args[3];
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this.d2 = args[4];
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this.d3 = args[5];
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};
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var buffer = null;
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var lastReadTime = 0;
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var writePtr = 0;
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// After 60 seconds without being read, a buffer will be considered
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// unused, and thus removed from memory.
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var logBufferObsoleteAfter = 30 * 1000;
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var janitor = function() {
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if (
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buffer !== null &&
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lastReadTime < (Date.now() - logBufferObsoleteAfter)
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) {
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buffer = null;
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writePtr = 0;
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api.ownerId = undefined;
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}
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if ( buffer !== null ) {
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vAPI.setTimeout(janitor, logBufferObsoleteAfter);
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}
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};
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var api = {
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ownerId: undefined,
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writeOne: function() {
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if ( buffer === null ) { return; }
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if ( writePtr === buffer.length ) {
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buffer.push(new LogEntry(arguments));
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} else {
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buffer[writePtr].init(arguments);
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}
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writePtr += 1;
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},
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readAll: function(ownerId) {
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this.ownerId = ownerId;
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if ( buffer === null ) {
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buffer = [];
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vAPI.setTimeout(janitor, logBufferObsoleteAfter);
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}
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var out = buffer.slice(0, writePtr);
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writePtr = 0;
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lastReadTime = Date.now();
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return out;
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}
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};
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return api;
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})();
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/******************************************************************************/
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