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Bug 973637 - Avoid crash at shutdown during make package. r=paolo

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This commit is contained in:
Alexandre Lissy 2014-02-17 17:00:36 +01:00
parent a45cb7ec24
commit d36cdd8dc7
1 changed files with 32 additions and 13 deletions
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45
toolkit/components/jsdownloads/src/DownloadIntegration.jsm
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@ -122,6 +122,23 @@ const kSaveDelayMs = 1500;
*/
const kPrefImportedFromSqlite = "browser.download.importedFromSqlite";
/**
* List of observers to listen against
*/
const kObserverTopics = [
"quit-application-requested",
"offline-requested",
"last-pb-context-exiting",
"last-pb-context-exited",
"sleep_notification",
"suspend_process_notification",
"wake_notification",
"resume_process_notification",
"network:offline-about-to-go-offline",
"network:offline-status-changed",
"xpcom-will-shutdown",
];
////////////////////////////////////////////////////////////////////////////////
//// DownloadIntegration
@ -825,17 +842,9 @@ this.DownloadIntegration = {
DownloadObserver.registerView(aList, aIsPrivate);
if (!DownloadObserver.observersAdded) {
DownloadObserver.observersAdded = true;
Services.obs.addObserver(DownloadObserver, "quit-application-requested", true);
Services.obs.addObserver(DownloadObserver, "offline-requested", true);
Services.obs.addObserver(DownloadObserver, "last-pb-context-exiting", true);
Services.obs.addObserver(DownloadObserver, "last-pb-context-exited", true);
Services.obs.addObserver(DownloadObserver, "sleep_notification", true);
Services.obs.addObserver(DownloadObserver, "suspend_process_notification", true);
Services.obs.addObserver(DownloadObserver, "wake_notification", true);
Services.obs.addObserver(DownloadObserver, "resume_process_notification", true);
Services.obs.addObserver(DownloadObserver, "network:offline-about-to-go-offline", true);
Services.obs.addObserver(DownloadObserver, "network:offline-status-changed", true);
for (let topic of kObserverTopics) {
Services.obs.addObserver(DownloadObserver, topic, false);
}
}
return Promise.resolve();
},
@ -1038,14 +1047,24 @@ this.DownloadObserver = {
this._resumeOfflineDownloads();
}
break;
// We need to unregister observers explicitly before we reach the
// "xpcom-shutdown" phase, otherwise observers may be notified when some
// required services are not available anymore. We can't unregister
// observers on "quit-application", because this module is also loaded
// during "make package" automation, and the quit notification is not sent
// in that execution environment (bug 973637).
case "xpcom-will-shutdown":
for (let topic of kObserverTopics) {
Services.obs.removeObserver(this, topic);
}
break;
}
},
////////////////////////////////////////////////////////////////////////////
//// nsISupports
QueryInterface: XPCOMUtils.generateQI([Ci.nsIObserver,
Ci.nsISupportsWeakReference])
QueryInterface: XPCOMUtils.generateQI([Ci.nsIObserver])
};
////////////////////////////////////////////////////////////////////////////////