I have this code: var eventIn = kevent(ident: UInt(self.socket), filter: Int16(EVFILT_WRITE), flags: UInt16((EV_ADD | EV_ENABLE)), fflags: 0, data: 0, udata: nil ) I looked at it and thought why do I have those extra parentheses? So I changed it to var eventIn = kevent(ident: UInt(self.socket), filter: Int16(EVFILT_WRITE), flags: UInt16(EV_ADD | EV_ENABLE), // changed line! fflags: 0, data: 0, udata: nil ) and then kevent gave me EBADF. Does this make sense to anyone?

My load average on a largely idle system is around 22, going up to 70 or so periodically; SSMenuAgent seems to be consuming lots of CPU (and, looking at spindump, it certainly seems busy), but... it's not happening on any other system whose screens I am observing. (Er, I know about load average limitations, the process is also consuming 70-98% CPU according to both top and Activity Monitor.) Since this machine (although idle) has our network extension, I'm trying to figure out if this is due to that, or of this is generally expected. Anyone?

* [Error] Failed to stop recording session: Failed stoping ktrace session. (xcode-select version 2409) So why can't it stop the ktrace session? And how long has that typo been around? 😄 (Look, I've kept typos in log messages for years because it differentiated that message from other messages.)

% mkdir /tmp/test % cd /tmp/test % touch {a,b,c}{1,2,3,4,5,6}.txt % lf a1.txt a3.txt a5.txt b1.txt b3.txt b5.txt c1.txt c3.txt c5.txt a2.txt a4.txt a6.txt b2.txt b4.txt b6.txt c2.txt c4.txt c6.txt % echo [b-z]*.txt a1.txt a2.txt a3.txt a4.txt a5.txt a6.txt b1.txt b2.txt b3.txt b4.txt b5.txt b6.txt c1.txt c2.txt c3.txt c4.txt c5.txt c6.txt I filed FB16715590 about this. I have a vague memory this might be related to some code to pretend to be case insensitive, but I can't find it now.

It looks like, for some reason, our apps are using a bunch of power sometimes. sysdiagnose has this in the power log: Never mind. Including the output of sysdiagnose has "sensitive language," and it won't tell me what is sensitive, making this a waste of my time. ETA: Ok, I I can attach the file: power.log I've gone through the energy documentation, but it seems geared towards embedded, not macOS, so I'm not sure how I can figure this out more. The extra problem, of course, is that we have a network extension, two daemons, and a GUI app. 😄

The stuff I've found by searching has confused me, so hopefully someone can help simplify it for me? I have an app (I use it for logging which books I've given away), and I could either add a bunch of things to the app, or I could have another app (possibly a CLI tool) to generate some reports I'd like.

Clearly not percentage, but the units don't seem to be specified... The real problem we have right now is that, with macOS 15.5, our suite gets a huge amount of "energy impact" points, even though diving into it, it doesn't seem to do that. The most telling example I have of that is: I ran each of our daemons from Terminal, unplugged my laptop, closed the lid, and let it stay there for 8 or 9 hours. When I woke it back up, Activity Monitor claimed it had 2,000 units or so, but after opening all of the disclosure triangles, none of the processes (including the hand-started daemons) used anything close to that. Also, the battery had almost no drain on it. We're getting complaints about this, so I'm trying to figure out what, exactly is going on, but I never looked at the power stuff internally so I don't know how to read the diagnostic files.

In doing some work, I realized I didn't understand XPC (or at least, the higher-level APIs) at all. So I did what I usually try to do, which is to write a completely, brain-dead simple program to use it, and then keep expanding until I understand it. This also, to my utmost embarrassment, will make it transparently clear how ignorant I am. (Note that, for this, I am not using Xcode -- just using swiftc to compile, and then manually run.) I started with this, to be the server side: import Foundation class ConnectionHandler: NSObject, NSXPCListenerDelegate {     override init() { super.init() print("ConnectionHandler.init()")     }     func listener(_ listener: NSXPCListener, shouldAcceptNewConnection newConnection: NSXPCConnection) -> Bool { print("ConnectionHandler.listener()") return false     } } let handler = ConnectionHandler() let listener = NSXPCListener(machServiceName: "com.kithrup.test") listener.delegate = handler listener.resume() print("listener = \(listener)") dispatchMain() That ... does absolutely nothing, of course, but runs, and then I tried to write the client side: import Foundation @objc protocol Hello {     func hello() } class HelloClass: NSObject, Hello {     override init() { super.init()     }     func hello() { print("In HelloClass.hello()")     } } let hello = HelloClass() let connection = NSXPCConnection(machServiceName: "com.kithrup.test", options: []) connection.exportedInterface = NSXPCInterface(with: Hello.self) let proxy = connection.remoteObjectProxyWithErrorHandler({ error in   print("Got error \(error)") }) as? Hello print("proxy = \(proxy)") connection.resume() dispatchMain() That gets proxy as nil. Because it can't coerce it to something of Hello protocol. And at no point, do I get the message from the server-side listener. So clearly I am doing everything wrong. Can anyone offer some hints?

There's the NSWorkspaceSessionDidBecomeActiveNotification et al, but that doesn't say who the current user is. Is there a way to find out that? (I mean, I could have a LaunchAgent that send "I've become active!" log message or something, and then use the most recent one. Is there another way?)

As I asked earlier, I was trying to figure out who the current user is. Since the proposed solution doesn't work, I thought, okay, let's try sending notifications from a LaunchAgent! Only, right, notifications are per-process, so I tried Distributed Notifications... and that doesn't seem to work across users. (Now, since I log while also sending the distributed notifications, I can see that it is working the way I want. Except that willPowerOffNotification doesn't actually seem to happen with a logout. Maybe that's because it's a CLI program? But the other notifications do work...)

We're using CMake here, so we can build on Windows, Linux, and macOS. So now I'm trying to convert from Xcode to CMake (which then generates an xcode project, whee). The main problems I'm running into are figuring out which settings to do via CMakeLists.txt. That's mostly tiresome. But theres a new issue, and I don't know enough about CMake to figure it out: compiling my .swift file generates a ${PROJECT}-Swift.h file, which is used by the ObjC files. Which is great. Except I don't know how to tell CMake about that. (And I haven't figured out what variable describes where Xcode puts it, but that's more of a tiresome issue than head-against-desk issue...) Has anyone run into and hopefully figured this out?

The NSWorkspace method that does this, fullPathForApplication, is deprecated. So what's the alternative? I do note that oascript can do it by id of app "App Name", so unless that's going away too, there must be some way of doing it, no?

I create a protocol that had, among other things: @objc func setList(_: [MyType], withReply: @escaping (Error?) -> Void) The daemon part is in Swift, while the calling part is in Objective-C. Because why not? (Actually, because the calling part has to deal with C++ code, so that's ObjC++; however, I wanted the stronger typing and runtime checking for the daemon part, so I wrote it in Swift.) The ObjC part uses NSArray<MyType*>. I set up an NSXPCConnection link, and create a (synchronous) proxy with the right protocol name. But when I try to do the XPC setList call, I get an error. I assume that's because it doesn't like the signature. (Surely this is logged somewhere? I couldn't find it, if so. 😩) But... if I have a signature of @objc func addItem(_: MyType, withReply: @escaping (Error?) -> Void), then it works. So I assume it's the array. (Oh, I've also tried it without the @objc; the protocol itself is defined as @objc.) I've tried changing to protocol signature to using NSArray, but same thing.

I got the permission from Apple (yay), and when I generate a profile on the portal, I can select it. But when I download it... it doesn't have it. Looking at the profile on the portal again, it says I have "Enabled Capabilities Endpoint Security, In-App Purchase". (Although how did that get there?)

Consider: sef% mdfind 'kMDItemDisplayName =[c] "Zoom.us"' sef% sef% mdfind 'kMDItemDisplayName =[c] "zoom.us"' sef% vs sef% mdfind 'kMDItemDisplayName == "zoom.us"' /Applications/zoom.us.app (Using '==' vs '=' doesn't seem to make a difference.)