CorePlot无声崩溃(可能来自scaletofit:)-CorePlotsilentcrash(possiblyfromscaleToFitPlots:)

I have an iPhone app with a CorePlot graph. I have a button placed next to the graph which calls scaleToFitPlots: on the graph when pressed.

我有一个带有CorePlot图形的iPhone应用程序。我有一个按钮放在图的旁边，这个按钮叫做scaletofit:在按下的图上。

The problem is that sometimes my app crashes when scaleToFitPlots: is called.

问题是，有时我的应用程序崩溃时，scaletofit情节:被调用。

Most of the time there are no console messages and usually no debugger messages but rarely there is the following repeated about ten times

大多数时候没有控制台消息，通常没有调试器消息，但很少有以下重复的10次。

warning: Unable to restore previously selected frame.

There is usually no stack trace for the crashed thread but sometimes it is

崩溃的线程通常没有堆栈跟踪，但有时是。

0 

or

或

0 -[CPGradient newAxialGradientInRect:]
1 

One of the crash reports:

事故报告之一:

Incident Identifier: 4F9B520F-14A9-460F-A47D-93662C41D80A
CrashReporter Key:   d83f6beafd9d721fc55a6cda5eb9b2926b753649
Hardware Model:      iPad2,1
Process:         IQ [297]
Path:            /var/mobile/Applications/18468A8B-79C8-42FA-A597-141CC91E54F2/IQ.app/IQ
Identifier:      IQ
Version:         ??? (???)
Code Type:       ARM (Native)
Parent Process:  launchd [1]

Date/Time:       2011-07-20 15:53:48.420 -0700
OS Version:      iPhone OS 4.3.3 (8J2)
Report Version:  104

Exception Type:  EXC_BAD_ACCESS (SIGBUS)
Exception Codes: KERN_PROTECTION_FAILURE at 0x002fc080
Crashed Thread:  0

Thread 0 name:  Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0   ???                             0x002fc080 0 + 3129472
1   ???                             0xfffffff8 0 + -8

Thread 1 name:  Dispatch queue: com.apple.libdispatch-manager
Thread 1:
0   libsystem_kernel.dylib          0x35590fbc kevent + 24
1   libdispatch.dylib               0x3525bed4 _dispatch_mgr_invoke + 744
2   libdispatch.dylib               0x3525cf3a _dispatch_queue_invoke + 70
3   libdispatch.dylib               0x3525c4ec _dispatch_worker_thread2 + 228
4   libsystem_c.dylib               0x3566758a _pthread_wqthread + 258
5   libsystem_c.dylib               0x35667bbc start_wqthread + 0

Thread 2 name:  WebThread
Thread 2:
0   libsystem_kernel.dylib          0x3558dc00 mach_msg_trap + 20
1   libsystem_kernel.dylib          0x3558d758 mach_msg + 44
2   CoreFoundation                  0x309582b8 __CFRunLoopServiceMachPort + 88
3   CoreFoundation                  0x3095a562 __CFRunLoopRun + 350
4   CoreFoundation                  0x308eaebc CFRunLoopRunSpecific + 224
5   CoreFoundation                  0x308eadc4 CFRunLoopRunInMode + 52
6   WebCore                         0x35f5327e RunWebThread(void*) + 382
7   libsystem_c.dylib               0x3566630a _pthread_start + 242
8   libsystem_c.dylib               0x35667bb4 thread_start + 0

Thread 3:
0   libsystem_kernel.dylib          0x355903ec __workq_kernreturn + 8
1   libsystem_c.dylib               0x356676d8 _pthread_wqthread + 592
2   libsystem_c.dylib               0x35667bbc start_wqthread + 0

Thread 0 crashed with ARM Thread State:
    r0: 0x00000001    r1: 0x0000000f      r2: 0x2fdfdae0      r3: 0x0000002f
    r4: 0x0650d740    r5: 0x2fdfdb30      r6: 0x005e7460      r7: 0x00c8a0d2
    r8: 0xd7400000    r9: 0x2fdfdaf4     r10: 0x7c852fdf     r11: 0xdb400004
    ip: 0x00000000    sp: 0x2fdfdb10      lr: 0x33325e15      pc: 0x002fc080
  cpsr: 0x600f0010

Binary Images:
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  0x18e000 -   0x192fff  AccessibilitySettingsLoader armv7  <977d3eb9b0a4389e85e0e8eb64806759> /System/Library/AccessibilityBundles/AccessibilitySettingsLoader.bundle/AccessibilitySettingsLoader
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0x34740000 - 0x347effff  QuartzCore armv7   /System/Library/Frameworks/QuartzCore.framework/QuartzCore
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0x349bb000 - 0x34b07fff  MediaToolbox armv7  <482b13059e8a329fa5d832baede25103> /System/Library/PrivateFrameworks/MediaToolbox.framework/MediaToolbox
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0x34e7e000 - 0x34efffff  libsystem_c.dylib armv7   /usr/lib/system/libsystem_c.dylib
0x3505d000 - 0x3509dfff  CoreMedia armv7  <8e0570582ba535bfa74f1f00eef64376> /System/Library/Frameworks/CoreMedia.framework/CoreMedia
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0x350a9000 - 0x350ebfff  CoreAudio armv7   /System/Library/Frameworks/CoreAudio.framework/CoreAudio
0x3525b000 - 0x3525ffff  libcache.dylib armv7   /usr/lib/system/libcache.dylib
0x3527c000 - 0x35283fff  libMobileGestalt.dylib armv7  <55f29184efcc3046bb833dd72a4487e1> /usr/lib/libMobileGestalt.dylib
0x35284000 - 0x35293fff  Notes armv7   /System/Library/PrivateFrameworks/Notes.framework/Notes
0x352a4000 - 0x352c3fff  Bom armv7   /System/Library/PrivateFrameworks/Bom.framework/Bom
0x35404000 - 0x35408fff  libGFXShared.dylib armv7   /System/Library/Frameworks/OpenGLES.framework/libGFXShared.dylib
0x35419000 - 0x3546afff  libsqlite3.dylib armv7  <8a41cc6a6d9332308bc415d27577fd24> /usr/lib/libsqlite3.dylib
0x3546b000 - 0x35472fff  libbz2.1.0.dylib armv7  <0a082e1d475432959ba93aa3dbf7fb31> /usr/lib/libbz2.1.0.dylib
0x354cf000 - 0x35502fff  QuickLook armv7  <29d2d981d1d6358381f5716ee37314b4> /System/Library/Frameworks/QuickLook.framework/QuickLook
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0x3581d000 - 0x35827fff  AccountSettings armv7   /System/Library/PrivateFrameworks/AccountSettings.framework/AccountSettings
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0x35890000 - 0x358adfff  libsystem_info.dylib armv7  <48016be86e3f3cd9aeee1c6590e1ac6f> /usr/lib/system/libsystem_info.dylib
0x358e3000 - 0x359ebfff  CoreData armv7  <9843a401dd1d322383e3e40021cc8b95> /System/Library/Frameworks/CoreData.framework/CoreData
0x35a9c000 - 0x35aa3fff  AggregateDictionary armv7   /System/Library/PrivateFrameworks/AggregateDictionary.framework/AggregateDictionary
0x35aa4000 - 0x35af2fff  CoreMotion armv7  <58c353bb7e33361f881da07c72f4cdfb> /System/Library/Frameworks/CoreMotion.framework/CoreMotion
0x35af3000 - 0x35af4fff  libsystem_network.dylib armv7  <39bf0f48bd8539169a77f8f61cdcd4c9> /usr/lib/system/libsystem_network.dylib
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0x35afc000 - 0x35b2ffff  iCalendar armv7  <34ce1957082f3518b5740ac33cfc92eb> /System/Library/PrivateFrameworks/iCalendar.framework/iCalendar
0x35b30000 - 0x35b30fff  Accelerate armv7  <7d5ad465049136afaa1f0d89aac600bc> /System/Library/Frameworks/Accelerate.framework/Accelerate
0x35d32000 - 0x35df1fff  CFNetwork armv7   /System/Library/Frameworks/CFNetwork.framework/CFNetwork
0x35fd4000 - 0x36003fff  SystemConfiguration armv7  <1d73b8a159363f96bb9c039655c5eae6> /System/Library/Frameworks/SystemConfiguration.framework/SystemConfiguration
0x36004000 - 0x36024fff  AppleAccount armv7  <4e0ac5cf93b338ab8c5f34ba3c5e2ee4> /System/Library/PrivateFrameworks/AppleAccount.framework/AppleAccount
0x36025000 - 0x3602bfff  ProtocolBuffer armv7   /System/Library/PrivateFrameworks/ProtocolBuffer.framework/ProtocolBuffer
0x3602c000 - 0x36637fff  WebCore armv7  <07941e59d0a33f94802c16c76238fddf> /System/Library/PrivateFrameworks/WebCore.framework/WebCore
0x36644000 - 0x36650fff  AXRuntime armv7  <6698f47f8d1732579ebd62fff9c35035> /System/Library/PrivateFrameworks/AXRuntime.framework/AXRuntime
0x36970000 - 0x36983fff  libmis.dylib armv7  <529ea6e3a87230ce9f6cf3285c22429c> /usr/lib/libmis.dylib
0x36994000 - 0x36a79fff  CoreFoundation armv7   /System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
0x36a91000 - 0x36b37fff  Celestial armv7  <7fbd02fa664b33babaf0327c320d1491> /System/Library/PrivateFrameworks/Celestial.framework/Celestial
0x36bbb000 - 0x36bcdfff  VoiceServices armv7   /System/Library/PrivateFrameworks/VoiceServices.framework/VoiceServices
0x36bfe000 - 0x36c04fff  IAP armv7   /System/Library/PrivateFrameworks/IAP.framework/IAP
0x36c29000 - 0x36c36fff  libbsm.0.dylib armv7  <0a1e2bb78d5138419ecad8ba0fe42fdd> /usr/lib/libbsm.0.dylib
0x36cd3000 - 0x36df4fff  CoreGraphics armv7  <65f6c8701b563542820a26b0dfc4f6a4> /System/Library/Frameworks/CoreGraphics.framework/CoreGraphics

One thing I tried was suspending all threads except the main thread with the debugger. This works to prevent crashes until the system starts another thread.

我尝试的一件事是暂停所有线程，除了主线程和调试器。这可以防止崩溃，直到系统启动另一个线程。

Notes:

注:

• My program doesn't run any background threads that could cause this.
• 我的程序没有运行任何可能导致这个的后台线程。
• Fitting the plots immediately after pinching the graph to zoom causes it to crash around a third of the time while fitting the plots when the app has been idle for some time rarely causes a crash.
• 将图缩放后立即拟合，使其在三分之一的时间内发生崩溃，而当应用程序闲置一段时间后，却很少会导致崩溃。
• It doesn't crash on the Simulator. Only the device.
• 它不会在模拟器上崩溃。只有设备。

Is this a known bug with CorePlot? Any help would be appreciated.

这是CorePlot的已知缺陷吗?如有任何帮助，我们将不胜感激。

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EDIT: My app sets the global x and y range of the plot space to nil immediately before calling scaleToFitPlots: (So that is can fit a to plots outside the current global range). When I remove this, the app no longer crashes.

编辑:我的应用程序在调用scaletofitplot之前，将plot空间的全局x和y范围设置为nil:(这样就可以在当前全局范围之外设置一个图了)。当我删除它时，应用程序不再崩溃。

Is this a bug with CorePlot? How could I work around this? (I still need to limit user zooming with pinch gestures)

这是一个带CorePlot的小虫吗?我怎么能解决这个问题呢?(我仍然需要限制用户缩放手势)

1 个解决方案