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Land external changes to Sync.js: setTimeout timer reference, checkAppReady comments/calls.

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This commit is contained in:
Edward Lee 2009-10-08 11:45:51 -07:00
parent 3e50bcc32f
commit 7d40472caa
1 changed files with 11 additions and 10 deletions
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21
services/sync/modules/ext/Sync.js
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@ -51,6 +51,9 @@ const CB_FAIL = {};
// Share a secret only for functions in this file to prevent outside access
const SECRET = {};
/**
* Check if the app is ready (not quitting)
*/
function checkAppReady() {
// Watch for app-quit notification to stop any sync. calls
let os = Cc["@mozilla.org/observer-service;1"].
@ -116,9 +119,6 @@ function makeCallback() {
*/
function Sync(func, thisArg, callback) {
return function syncFunc(/* arg1, arg2, ... */) {
// Initialize the observer on first usage
checkAppReady();
// Grab the current thread so we can make it give up priority
let thread = Cc["@mozilla.org/thread-manager;1"].getService().currentThread;
@ -136,9 +136,9 @@ function Sync(func, thisArg, callback) {
// Call the async function bound to thisArg with the passed args
func.apply(thisArg, args);
// Keep waiting until our callback is triggered
// Keep waiting until our callback is triggered unless the app is quitting
let callbackData = instanceCallback._(SECRET);
while (callbackData.state == CB_READY && checkAppReady())
while (checkAppReady() && callbackData.state == CB_READY)
thread.processNextEvent(true);
// Reset the state of the callback to prepare for another call
@ -183,11 +183,12 @@ Sync.withCb = function Sync_withCb(func, thisArg) {
function setTimeout(func, delay) {
let timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
let callback = {
_func: func,
notify: function(timer) {
// Call the function such that "this" inside the function is the global
// object, just as it would be with window.setTimeout.
(this._func)();
notify: function notify() {
// This line actually just keeps a reference to timer (prevent GC)
timer = null;
// Call the function so that "this" is global
func();
}
}
timer.initWithCallback(callback, delay, Ci.nsITimer.TYPE_ONE_SHOT);