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GCD 和 AppleEvents / NSOperationQueue 和 AppleScript

发布于 2024-09-01 06:56:22 字数 4225 浏览 8 评论 0原文

据我了解，GCD 提供的线程确实有一个运行循环，但没有源/端口。现在我使用一些通过 NSOperationQueue 内的 AppleEvents 调用 AppleScripts 的方法。有时我的应用程序会因以下堆栈跟踪而崩溃。

我的问题：

  • 在 NSInitationOperation 或 NSBlockOperation 中使用 AppleScript
  • 在 GCD 线程中使用 AppleEvents
  • 在使用 AppleEvents 之前，我是否必须将源/端口添加到 gcd 线程的运行循环中？
  • 在使用 [CATransaction commit] 之前，我是否必须将源/端口添加到 gcd 线程的运行循环中？
  • 在使用 [NSObject PerformSelectorAfterDelay...] 之前，我是否必须将源/端口添加到 gcd 线程的运行循环中？
  • 如果是，怎么办？
  • 我可以简单地调用 CFRunLoopRunInMode(kCFRunLoopDefaultMode, 5.0, false); /// 还是30或者appleevent定义的超时时间？
..

Thread 9: Dispatch queue: com.apple.root.default-priority
0 libSystem.B.dylib 0x00007fff88276e82 semaphore_wait_signal_trap 10
1 libSystem.B.dylib 0x00007fff8827c3cd pthread_mutex_lock 469
2 com.apple.applescript 0x000000011d3d461f AppleScriptComponent 50
3 com.apple.applescript 0x000000011d3edbcc AGenericCall::Delegate(ComponentInstanceRecord*) 46
4 com.apple.applescript 0x000000011d3ed520 AGenericManager::HandleOSACall(ComponentParameters*) 54
5 com.apple.applescript 0x000000011d3ed4b0 GenericComponent 219
6 com.apple.openscripting 0x00007fff8381c6da OSAExecuteEvent 63
7 com.apple.Foundation 0x00007fff86f320d8 -[NSAppleScript(NSPrivate) _executeAppleEvent:withMode:error:] 161
8 xxx 0x0000000100048af0 -[TCallScript callScript:withArrayOfParameters:] 480
9 xxx 0x0000000100048ffd -[TCallScript callHandler:withParameters:] 477
10 xxx 0x0000000100036032 -[ZFOpenWindowController getSafariItemForCurrentTabForWindow:] 66
11 xxx 0x00000001000346af -[ZFOpenWindowController refreshWindowList:] 1679
12 xxx 0x000000010003541c -[ZFOpenWindowController bringZFToForegroundZoomOut:orJustLinkFrontMost:toItem:] 2988
13 xxx 0x0000000100053556 __-[ZFSelectionTool openWithPreferredApplication:]_block_invoke_516 54
14 com.apple.Foundation 0x00007fff86ed87d9 -[NSBlockOperation main] 140
15 com.apple.Foundation 0x00007fff86ec906d -[__NSOperationInternal start] 681
16 com.apple.Foundation 0x00007fff86ec8d23 ____startOperations_block_invoke_2 99
17 libSystem.B.dylib 0x00007fff882b2ce8 _dispatch_call_block_and_release 15
18 libSystem.B.dylib 0x00007fff88291279 _dispatch_worker_thread2 231
19 libSystem.B.dylib 0x00007fff88290bb8 _pthread_wqthread 353
20 libSystem.B.dylib 0x00007fff88290a55 start_wqthread 13


...


Thread 11 Crashed: Dispatch queue: com.apple.root.default-priority
0 com.apple.applescript 0x000000011d40f658 BCHandleError() 182
1 com.apple.applescript 0x000000011d4059ca UASExecute1() 2546
2 com.apple.applescript 0x000000011d3dd1d5 ASExecuteEvent(AEDesc const*, unsigned int, int, unsigned int*) 695
3 ...ple.CoreServices.CarbonCore    0x00007fff85388e04 CallComponentFunction 28
4 com.apple.applescript 0x000000011d3d4cad AppleScriptComponent 1728
5 com.apple.applescript 0x000000011d3edbcc AGenericCall::Delegate(ComponentInstanceRecord*) 46
6 com.apple.applescript 0x000000011d3ed520 AGenericManager::HandleOSACall(ComponentParameters*) 54
7 com.apple.applescript 0x000000011d3ed4b0 GenericComponent 219
8 com.apple.openscripting 0x00007fff8381c6da OSAExecuteEvent 63
9 com.apple.Foundation 0x00007fff86f320d8 -[NSAppleScript(NSPrivate) _executeAppleEvent:withMode:error:] 161
10 xxx 0x0000000100048af0 -[TCallScript callScript:withArrayOfParameters:] 480
11 xxx 0x0000000100048ffd -[TCallScript callHandler:withParameters:] 477
12 xxx 0x0000000100035c67 -[ZFOpenWindowController getItemForAXDocumentOfFrontMostWindow] 119
13 xxx 0x00000001000359f1 -[ZFOpenWindowController getItemForFrontMostWindow:] 721
14 xxx 0x00000001000348ac -[ZFOpenWindowController bringZFToForegroundZoomOut:orJustLinkFrontMost:toItem:] 60
15 xxx 0x0000000100053556 __-[ZFSelectionTool openWithPreferredApplication:]_block_invoke_516 54
16 com.apple.Foundation 0x00007fff86ed87d9 -[NSBlockOperation main] 140
17 com.apple.Foundation 0x00007fff86ec906d -[__NSOperationInternal start] 681
18 com.apple.Foundation 0x00007fff86ec8d23 ____startOperations_block_invoke_2 99
19 libSystem.B.dylib 0x00007fff882b2ce8 _dispatch_call_block_and_release 15
20 libSystem.B.dylib 0x00007fff88291279 _dispatch_worker_thread2 231
21 libSystem.B.dylib 0x00007fff88290bb8 _pthread_wqthread 353
22 libSystem.B.dylib 0x00007fff88290a55 start_wqthread 13
原文

As i understood, the threads provided by GCD do have a runloop but no source/port. Now i use some of methods that call AppleScripts thru AppleEvents inside an NSOperationQueue. And sometimes my app crashes with following stacktrace.

my questions:

  • Usage of AppleScript inside a NSInvocationOperation or NSBlockOperation
  • Usage of AppleEvents inside GCD-Threads
  • do i have to add a source / port to a runloop of a gcd-thread before using AppleEvents?
  • do i have to add a source / port to a runloop of a gcd-thread before using [CATransaction commit]?
  • do i have to add a source / port to a runloop of a gcd-thread before using [NSObject performSelectorAfterDelay...] ?
  • if yes, how?
  • can i simply call CFRunLoopRunInMode(kCFRunLoopDefaultMode, 5.0, false); /// or 30 or the defined timeout of appleevent?
..

Thread 9: Dispatch queue: com.apple.root.default-priority
0 libSystem.B.dylib 0x00007fff88276e82 semaphore_wait_signal_trap 10
1 libSystem.B.dylib 0x00007fff8827c3cd pthread_mutex_lock 469
2 com.apple.applescript 0x000000011d3d461f AppleScriptComponent 50
3 com.apple.applescript 0x000000011d3edbcc AGenericCall::Delegate(ComponentInstanceRecord*) 46
4 com.apple.applescript 0x000000011d3ed520 AGenericManager::HandleOSACall(ComponentParameters*) 54
5 com.apple.applescript 0x000000011d3ed4b0 GenericComponent 219
6 com.apple.openscripting 0x00007fff8381c6da OSAExecuteEvent 63
7 com.apple.Foundation 0x00007fff86f320d8 -[NSAppleScript(NSPrivate) _executeAppleEvent:withMode:error:] 161
8 xxx 0x0000000100048af0 -[TCallScript callScript:withArrayOfParameters:] 480
9 xxx 0x0000000100048ffd -[TCallScript callHandler:withParameters:] 477
10 xxx 0x0000000100036032 -[ZFOpenWindowController getSafariItemForCurrentTabForWindow:] 66
11 xxx 0x00000001000346af -[ZFOpenWindowController refreshWindowList:] 1679
12 xxx 0x000000010003541c -[ZFOpenWindowController bringZFToForegroundZoomOut:orJustLinkFrontMost:toItem:] 2988
13 xxx 0x0000000100053556 __-[ZFSelectionTool openWithPreferredApplication:]_block_invoke_516 54
14 com.apple.Foundation 0x00007fff86ed87d9 -[NSBlockOperation main] 140
15 com.apple.Foundation 0x00007fff86ec906d -[__NSOperationInternal start] 681
16 com.apple.Foundation 0x00007fff86ec8d23 ____startOperations_block_invoke_2 99
17 libSystem.B.dylib 0x00007fff882b2ce8 _dispatch_call_block_and_release 15
18 libSystem.B.dylib 0x00007fff88291279 _dispatch_worker_thread2 231
19 libSystem.B.dylib 0x00007fff88290bb8 _pthread_wqthread 353
20 libSystem.B.dylib 0x00007fff88290a55 start_wqthread 13


...


Thread 11 Crashed: Dispatch queue: com.apple.root.default-priority
0 com.apple.applescript 0x000000011d40f658 BCHandleError() 182
1 com.apple.applescript 0x000000011d4059ca UASExecute1() 2546
2 com.apple.applescript 0x000000011d3dd1d5 ASExecuteEvent(AEDesc const*, unsigned int, int, unsigned int*) 695
3 ...ple.CoreServices.CarbonCore    0x00007fff85388e04 CallComponentFunction 28
4 com.apple.applescript 0x000000011d3d4cad AppleScriptComponent 1728
5 com.apple.applescript 0x000000011d3edbcc AGenericCall::Delegate(ComponentInstanceRecord*) 46
6 com.apple.applescript 0x000000011d3ed520 AGenericManager::HandleOSACall(ComponentParameters*) 54
7 com.apple.applescript 0x000000011d3ed4b0 GenericComponent 219
8 com.apple.openscripting 0x00007fff8381c6da OSAExecuteEvent 63
9 com.apple.Foundation 0x00007fff86f320d8 -[NSAppleScript(NSPrivate) _executeAppleEvent:withMode:error:] 161
10 xxx 0x0000000100048af0 -[TCallScript callScript:withArrayOfParameters:] 480
11 xxx 0x0000000100048ffd -[TCallScript callHandler:withParameters:] 477
12 xxx 0x0000000100035c67 -[ZFOpenWindowController getItemForAXDocumentOfFrontMostWindow] 119
13 xxx 0x00000001000359f1 -[ZFOpenWindowController getItemForFrontMostWindow:] 721
14 xxx 0x00000001000348ac -[ZFOpenWindowController bringZFToForegroundZoomOut:orJustLinkFrontMost:toItem:] 60
15 xxx 0x0000000100053556 __-[ZFSelectionTool openWithPreferredApplication:]_block_invoke_516 54
16 com.apple.Foundation 0x00007fff86ed87d9 -[NSBlockOperation main] 140
17 com.apple.Foundation 0x00007fff86ec906d -[__NSOperationInternal start] 681
18 com.apple.Foundation 0x00007fff86ec8d23 ____startOperations_block_invoke_2 99
19 libSystem.B.dylib 0x00007fff882b2ce8 _dispatch_call_block_and_release 15
20 libSystem.B.dylib 0x00007fff88291279 _dispatch_worker_thread2 231
21 libSystem.B.dylib 0x00007fff88290bb8 _pthread_wqthread 353
22 libSystem.B.dylib 0x00007fff88290a55 start_wqthread 13

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掌心的温暖 2024-09-08 06:56:22

请注意，AppleScript 组件的线程安全性有限。从 10.6 开始，您可以在非主线程上使用它，但您需要为每个线程创建一个新的 ComponentInstance。我认为你可以使用 OSAKit 来做到这一点，否则你需要求助于粗糙的 Carbon API。最好的实际上取决于您想要实现的目标（例如，您是运行用户提供的脚本，还是硬编码到应用程序中的脚本，以及通过 NSOperationQueue 运行它们的动机是什么）。

Note that the AppleScript component has limited thread safety. As of 10.6, you can use it on non-main threads, but you will need to create a new ComponentInstance for each thread. I think you can do this with OSAKit, otherwise you'll need to resort to the gnarly Carbon API. What's best really depends on what you're trying to achieve (e.g. are you running user-supplied scripts, or scripts hardcoded into your application, and what's the motivation for running them via NSOperationQueue).

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