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84a5a5eff6
Targets the real problem: an app (e.g. Roblox) getting closed/disconnected by
iOS once it's in the background. iOS won't let one app keep another alive —
except that a process a debugger is attached to is not suspended on
backgrounding (the same reason an Xcode-run app keeps executing in the
background). This uses that.
- JITEnableContext.keepAppAlive: launch the app suspended, vAttach (which sets
CS_DEBUGGED so JIT is on and marks the process debugger-owned), disable its
memory limit to reduce background jetsam kills, send a raw continue so it
runs, then hold the debug connection open with a heartbeat until the user
stops it — then interrupt + detach so the app keeps running on its own. The
hold is a single-threaded sleep-poll (no blocking socket reads, no concurrent
handle access), so it's cleanly cancellable.
- BackgroundAliveManager + HoldToken: own one active hold, keep StikDebug itself
alive via DebugKeepAliveLease for the duration, publish the active app name.
- UI: an experimental Settings toggle ("Hold App Alive in Background"); when on,
tapping an app in Home holds it alive instead of a normal one-shot JIT, and a
banner with a Stop button appears while a hold is active.
Caveats (documented in-app): experimental and unverified on-device; requires
StikDebug to stay running, so it's best-effort not bulletproof; cannot revive
an app iOS already killed; higher battery use.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Qznh32XffG6vwFLMcwm1Mq
50 lines
1.6 KiB
Swift
50 lines
1.6 KiB
Swift
//
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// AppBootstrapper.swift
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// StikDebug
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//
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import Foundation
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import ObjectiveC.runtime
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import UIKit
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enum AppBootstrapper {
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static func configure() {
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registerDefaultSettings()
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startConfiguredKeepAliveServices()
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applyDocumentPickerCopyWorkaround()
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NetworkPathMonitor.shared.start()
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}
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private static func registerDefaultSettings() {
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let os = ProcessInfo.processInfo.operatingSystemVersion
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let enableAdvancedOptions = os.majorVersion >= 19
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UserDefaults.standard.register(defaults: [
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"enableAdvancedOptions": enableAdvancedOptions,
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UserDefaults.Keys.txmOverride: false,
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UserDefaults.Keys.confirmExternalJITRequests: true,
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"keepAliveAudio": true,
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"keepAliveLocation": true,
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"keepAppAliveBackground": false
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])
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}
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private static func startConfiguredKeepAliveServices() {
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guard UserDefaults.standard.bool(forKey: "keepAliveAudio") else {
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return
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}
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BackgroundAudioManager.shared.start()
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}
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private static func applyDocumentPickerCopyWorkaround() {
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let fixedSelector = NSSelectorFromString("fix_initForOpeningContentTypes:asCopy:")
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let originalSelector = #selector(UIDocumentPickerViewController.init(forOpeningContentTypes:asCopy:))
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guard let fixedMethod = class_getInstanceMethod(UIDocumentPickerViewController.self, fixedSelector),
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let originalMethod = class_getInstanceMethod(UIDocumentPickerViewController.self, originalSelector) else {
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return
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}
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method_exchangeImplementations(originalMethod, fixedMethod)
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}
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}
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