iOS AppDelegate with multiple crash handlers, including custom one to show local notification that the app has crashed

AppDelegate.m

@interface AppDelegate()
    @property (nonatomic, assign) NSUncaughtExceptionHandler *crashHandler1;
    @property (nonatomic, assign) NSUncaughtExceptionHandler *crashHandler2;
@end


@implementation AppDelegate

AppDelegate *cSelf;

+ (AppDelegate *)sharedDelegate {
    return (AppDelegate *)[[UIApplication sharedApplication] delegate];
}

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

    [NewRelicAgent startWithApplicationToken:@"######################"];
    //get newrelic's crash handler
    self.crashHandler1 = NSGetUncaughtExceptionHandler();
    [Fabric with:@[CrashlyticsKit, TwitterKit]];
    //get crashlytics crash handler
    NSUncaughtExceptionHandler *handler = NSGetUncaughtExceptionHandler();
    //dont overwrite existing crashhandler
    if(self.crashHandler1 && handler != self.crashHandler1) {
        self.crashHandler2 = handler;
    } else if (handler == self.crashHandler1) {
        DebugLog(@"Crash handler is same as 1, not setting 2nd");
    } else {
        self.crashHandler1 = handler;
    }
    //needed to call notification from crash handler
    cSelf = self;
    //setup our own crashHander
    NSSetUncaughtExceptionHandler(&customExceptionHander);
    
    return YES;
}

void customExceptionHander(NSException *exception)
{
    //notify the user so they can restart their session
    UIApplication *app = [UIApplication sharedApplication];
    UILocalNotification *notification = [[UILocalNotification alloc] init];
    [notification setFireDate:[NSDate dateWithTimeIntervalSinceNow:5]];
    [notification setAlertBody:@"The App has crashed, you need to restart your it."];
    [notification setSoundName:UILocalNotificationDefaultSoundName];
    [app scheduleLocalNotification:notification];
    
    //make a copy of exception for dual handling
    NSException *ex2 = [exception copy];
    
    //call handler that was already hooked (hopefully crashlytics & newrelic)
    if(cSelf.crashHandler2)
        cSelf.crashHandler2(ex2);
    if(cSelf.crashHandler1)
        cSelf.crashHandler1(exception);
}

@end