【发布时间】：2011-11-09 20:22:10
【问题描述】：
我将 Xcode 4.2 用于 Lion / 生产版本。以前版本的 Xcode 4 表现还不错。
每次我保存一个文件，有时是随机的，沙滩球会无缘无故地显示 5-10 秒。
我使用颠覆是为了它的价值。
我捕获了一个样本，它似乎在这里的某个地方：
1775 Thread_791676 DispatchQueue_1: com.apple.main-thread (serial)
+ 1775 ??? (in Xcode) load address 0x103392000 + 0xeec [0x103392eec]
+ 1775 NSApplicationMain (in AppKit) + 867 [0x7fff9684180c]
+ 1775 -[NSApplication run] (in AppKit) + 555 [0x7fff965c2682]
+ 1775 -[IDEApplication sendEvent:] (in IDEKit) + 366 [0x103c95b71]
+ 1775 -[NSApplication sendEvent:] (in AppKit) + 4282 [0x7fff9662c170]
+ 1775 -[NSApplication _handleKeyEquivalent:] (in AppKit) + 526 [0x7fff9673488d]
+ 1775 -[NSMenu performKeyEquivalent:] (in AppKit) + 281 [0x7fff96735c3a]
+ 1775 CFRunLoopRunSpecific (in CoreFoundation) + 230 [0x7fff8e744ae6]
+ 1775 __CFRunLoopRun (in CoreFoundation) + 1724 [0x7fff8e7454dc]
+ 1775 _dispatch_main_queue_callback_4CF (in libdispatch.dylib) + 308 [0x7fff8c3ba72a]
+ 1775 _dispatch_call_block_and_release (in libdispatch.dylib) + 18 [0x7fff8c3b88ba]
+ 1775 __-[NSDocumentController(NSInternal) _onMainThreadInvokeWorker:]_block_invoke_3 (in AppKit) + 492 [0x7fff96995333]
+ 1775 __-[NSDocument performAsynchronousFileAccessUsingBlock:]_block_invoke_6 (in AppKit) + 94 [0x7fff96964cad]
+ 1775 -[IDEEditorDocument continueFileAccessUsingBlock:] (in IDEKit) + 71 [0x103db69db]
+ 1775 -[NSDocument continueFileAccessUsingBlock:] (in AppKit) + 227 [0x7fff96964898]
+ 1775 __-[NSDocument saveToURL:ofType:forSaveOperation:completionHandler:]_block_invoke_1 (in AppKit) + 845 [0x7fff96969702]
+ 1775 -[NSDocument _fileCoordinator:coordinateReadingContentsAndWritingItemAtURL:byAccessor:] (in AppKit) + 248 [0x7fff9697b25c]
+ 1775 -[NSFileCoordinator(NSPrivate) _coordinateReadingItemAtURL:options:writingItemAtURL:options:error:byAccessor:] (in Foundation) + 829 [0x7fff96471e65]
+ 1775 -[NSFileCoordinator(NSPrivate) _invokeAccessor:orDont:thenRelinquishAccessClaimForID:] (in Foundation) + 207 [0x7fff9646ea8d]
+ 1775 __-[NSDocument saveToURL:ofType:forSaveOperation:completionHandler:]_block_invoke_7 (in AppKit) + 1313 [0x7fff96985c80]
+ 1775 __-[NSDocument saveToURL:ofType:forSaveOperation:completionHandler:]_block_invoke_14 (in AppKit) + 502 [0x7fff9698535a]
+ 1775 -[NSDocument _preserveContentsIfNecessaryAfterWriting:toURL:forSaveOperation:version:error:] (in AppKit) + 286 [0x7fff9697b004]
+ 1775 -[NSDocument _preserveContentsOfURL:forReason:comment:options:error:] (in AppKit) + 335 [0x7fff96978c88]
+ 1775 -[NSFileVersion(NSPrivate) _setDocumentInfo:] (in Foundation) + 54 [0x7fff9648e905]
+ 1775 GSLibrarySetGenerationInfoValueForKey (in GenerationalStorage) + 620 [0x7fff8eab60bf]
+ 1775 ipc_set_info_value (in GenerationalStorage) + 250 [0x7fff8eaa714d]
+ 1775 mach_msg (in libsystem_kernel.dylib) + 73 [0x7fff95131d71]
+ 1775 mach_msg_trap (in libsystem_kernel.dylib) + 10 [0x7fff9513267a]
【问题讨论】：
标签： xcode4.2