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main.js
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main.js
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/* 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/. */
"use strict";
const { Cc, Ci, Cu, CC } = require("chrome");
const events = require("events");
const prefs = require("api-utils/preferences-service");
const self = require("self");
const simple_prefs = require("simple-prefs");
const widgets = require("widget");
const config = require("config");
const garbage_collector = require("garbage-collector");
const { Logger } = require("logger");
var memory = require("memory");
Cu.import('resource://gre/modules/Services.jsm');
var gData = {
current: {},
previous: {}
};
exports.main = function (options, callbacks) {
// Get the file directory from the prefs,
// and fallback on the profile directory if not specified
var dir = prefs.get(config.preferences.log_directory, "");
if (!dir) {
dir = Services.dirsvc.get("ProfD", Ci.nsILocalFile);
dir.append(self.name);
prefs.set(config.preferences.log_directory, dir.path);
}
// Create logger instance
var logger = new Logger({ dir: dir });
var contextPanel = require("panel").Panel({
width: 128,
height: 107,
contentURL: [self.data.url("panel/context.html")],
contentScriptFile: [self.data.url("panel/context.js")],
contentScriptWhen: "ready"
});
// If user clicks a panel entry the appropriate command has to be executed
contextPanel.port.on("command", function (data) {
contextPanel.hide();
switch (data.type) {
case "log_folder":
// Show the memchaser directory.
let nsLocalFile = CC("@mozilla.org/file/local;1",
"nsILocalFile", "initWithPath");
new nsLocalFile(logger.dir.path).reveal();
break;
case "logger_status":
logger.active = !logger.active;
widget.port.emit("update_logger", { "active": logger.active });
break;
case "minimize_memory":
memory.minimizeMemory(memory.reporter.retrieveStatistics);
break;
case "trigger_cc":
garbage_collector.doCC();
memory.reporter.retrieveStatistics();
break;
case "trigger_gc":
garbage_collector.doGlobalGC();
memory.reporter.retrieveStatistics();
break;
}
});
var widget = widgets.Widget({
id: "memchaser-widget",
label: "MemChaser",
tooltip: "MemChaser",
contentURL: [self.data.url("widget/widget.html")],
contentScriptFile: [self.data.url("widget/widget.js")],
contentScriptWhen: "ready",
panel: contextPanel,
width: 360,
onClick: function () {
contextPanel.port.emit("update", { logger_active: logger.active });
}
});
// If user hovers over an entry the tooltip has to be updated
widget.port.on("update_tooltip", function (data) {
if (data === "logger" && logger.active) {
data = "logger_enabled";
}
else if (data === "logger") {
data = "logger_disabled";
}
widget.tooltip = config.extension.widget_tooltips[data];
});
memory.reporter.on(config.application.topic_memory_statistics, function (aData) {
if (gData.current.memory)
gData.previous.memory = gData.current.memory;
gData.current.memory = aData;
widget.port.emit('update_memory', aData);
// Memory statistics aren't pretty useful yet to be logged
// See: https://github.com/mozilla/memchaser/issues/106
//logger.log(config.application.topic_memory_statistics, aData);
});
garbage_collector.reporter.on(config.application.topic_gc_statistics, function (aData) {
if (gData.current.gc)
gData.previous.gc = gData.current.gc;
gData.current.gc = aData;
widget.port.emit('update_garbage_collector', gData);
logger.log(config.application.topic_gc_statistics, aData);
});
garbage_collector.reporter.on(config.application.topic_cc_statistics, function (aData) {
if (gData.current.cc)
gData.previous.cc = gData.current.cc;
gData.current.cc = aData;
widget.port.emit('update_cycle_collector', gData);
logger.log(config.application.topic_cc_statistics, aData);
});
simple_prefs.on('log.directory', function (aData) {
logger.dir = prefs.get(config.preferences.log_directory);
});
}
exports.onUnload = function (reason) {
// Reset any modified preferences
if (reason === "disable" || reason === "uninstall") {
var modifiedPrefs = JSON.parse(prefs.get(config.preferences.modified_prefs, "{}"));
for (var pref in modifiedPrefs) {
prefs.set(pref, modifiedPrefs[pref]);
}
prefs.reset(config.preferences.modified_prefs);
}
}