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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/. */
import { GeckoViewUtils } from "resource://gre/modules/GeckoViewUtils.sys.mjs";
import { AppConstants } from "resource://gre/modules/AppConstants.sys.mjs";
const lazy = {};
ChromeUtils.defineESModuleGetters(lazy, {
EventDispatcher: "resource://gre/modules/Messaging.sys.mjs",
});
const { debug, warn } = GeckoViewUtils.initLogging("ChildCrashHandler");
function getDir(name) {
const uAppDataPath = Services.dirsvc.get("UAppData", Ci.nsIFile).path;
return PathUtils.join(uAppDataPath, "Crash Reports", name);
}
function getPendingMinidump(id) {
const pendingDir = getDir("pending");
return [".dmp", ".extra"].map(suffix => {
return PathUtils.join(pendingDir, `${id}${suffix}`);
});
}
export var ChildCrashHandler = {
// Map a child ID to a remote type.
childMap: new Map(),
// The event listener for this is hooked up in GeckoViewStartup.sys.mjs
observe(aSubject, aTopic, aData) {
const childID = aData;
switch (aTopic) {
case "process-type-set":
// Intentional fall-through
case "ipc:content-created": {
const pp = aSubject.QueryInterface(Ci.nsIDOMProcessParent);
this.childMap.set(childID, pp.remoteType);
break;
}
case "ipc:content-shutdown":
// Intentional fall-through
case "compositor:process-aborted": {
aSubject.QueryInterface(Ci.nsIPropertyBag2);
const disableReporting = Services.env.get(
"MOZ_CRASHREPORTER_NO_REPORT"
);
if (
!aSubject.get("abnormal") ||
!AppConstants.MOZ_CRASHREPORTER ||
disableReporting
) {
return;
}
// If dumpID is empty the process was likely killed by the system and
// we therefore do not want to report the crash. This includes most
// "expected" extensions process crashes on Android.
const dumpID = aSubject.get("dumpID");
if (!dumpID) {
Services.telemetry
.getHistogramById("FX_CONTENT_CRASH_DUMP_UNAVAILABLE")
.add(1);
return;
}
debug`Notifying child process crash, dump ID ${dumpID}`;
const [minidumpPath, extrasPath] = getPendingMinidump(dumpID);
let remoteType = this.childMap.get(childID);
this.childMap.delete(childID);
if (remoteType?.length) {
// Only send the remote type prefix since everything after a "=" is
// dynamic, and used to control the process pool to use.
remoteType = remoteType.split("=")[0];
}
// Report GPU and extension process crashes as occuring in a background
// process, and others as foreground.
const processType =
aTopic === "compositor:process-aborted" || remoteType === "extension"
? "BACKGROUND_CHILD"
: "FOREGROUND_CHILD";
lazy.EventDispatcher.instance.sendRequest({
type: "GeckoView:ChildCrashReport",
minidumpPath,
extrasPath,
success: true,
fatal: false,
processType,
remoteType,
});
break;
}
}
},
};
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