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how to get malloc info via dealloc instance memory address // iOS develop
有时候app crash的时候会看到类似如下的信息,除此之外就再也没有其他信息了
MyApp [4413:40b] -[UIImage isKindOfClass]: message sent to deallocated instance 0x4dbb170
这时候的错误定位方法如下:
- 使用gdb调试时,在debug窗口输入:info malloc-history 0x4dbb170(这里写已经dead的内存地址
- 使用lldb调试[此方法仅适用于模拟器调试,需要勾选scheme中Malloc Stack选项],打开terminal,su权限(没su权限可能会报错)
输入:malloc_history 4413 0x4dbb170 //4413是这个app的进程pid,在报错信息中能找到MyApp [4413:40b]
输入以上语句之后会产生一系列log如下:(很多不用看直接跳到213行
---------------------------------------
malloc_history Report Version: 2.0
Process: MyApp [4413]
Path: /Users/croath/Library/Application Support/iPhone Simulator/6.0/Applications/E8144724-22B0-412A-818C-6A8AB47A1B34/MyApp.app/MyApp
Load Address: 0x1000
Identifier: MyApp
Version: ??? (???)
Code Type: X86 (Native)
Parent Process: debugserver [75629]
Date/Time: 2013-01-25 19:17:42.686 +0800
OS Version: Mac OS X 10.8.2 (12C3104)
Report Version: 7
ALLOC 0x1a88b7d0-0x1a88b7e7 [size=24]: thread_ac097a28 |start | main | UIApplicationMain | GSEventRun | GSEventRunModal | CFRunLoopRunInMode | CFRunLoopRunSpecific | __CFRunLoopRun | __CFRunLoopDoTimer | __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ | CA::Display::TimerDisplayLink::callback(__CFRunLoopTimer*, void*) | CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long) | -[UIScrollView(Static) _smoothScrollDisplayLink:] | -[UIScrollView(Static) _smoothScrollWithUpdateTime:] | -[UIScrollView setContentOffset:] | -[MyCouponsViewController scrollViewDidScroll:] | -[MyCouponsViewController adjustControllerViewFrame:] | -[OneCouponViewController updateViewsWithCouponEntry:] | +[UIImage imageNamed:] | _UIImageAtPath | _UIImageCallFunctionForAppropriatePath | GetImageAtPath | ImageRefAtPath | CGImageSourceCreateImageAtIndex | makeImagePlus | CFArrayAppendValue | _CFArrayReplaceValues | CFAllocatorAllocate | __CFAllocatorSystemAllocate | malloc_zone_malloc
----
FREE 0x1a88b7d0-0x1a88b7e7 [size=24]: thread_ac097a28 |start | main | UIApplicationMain | GSEventRun | GSEventRunModal | CFRunLoopRunInMode | CFRunLoopRunSpecific | __CFRunLoopRun | __CFRunLoopDoTimer | __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ | CA::Display::TimerDisplayLink::callback(__CFRunLoopTimer*, void*) | CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long) | -[UIScrollView(Static) _smoothScrollDisplayLink:] | -[UIScrollView(Static) _smoothScrollWithUpdateTime:] | -[UIScrollView setContentOffset:] | -[MyCouponsViewController scrollViewDidScroll:] | -[MyCouponsViewController adjustControllerViewFrame:] | -[OneCouponViewController updateViewsWithCouponEntry:] | +[UIImage imageNamed:] | _UIImageAtPath | _UIImageCallFunctionForAppropriatePath | GetImageAtPath | ImageRefAtPath | CFRelease | _CGImageSourceFinalize | CFRelease | __CFArrayDeallocate | __CFArrayReleaseValues | CFAllocatorDeallocate | __CFAllocatorSystemDeallocate | malloc_zone_free
ALLOC 0x1a88b7d0-0x1a88b7f3 [size=36]: thread_ac097a28 |start | main | UIApplicationMain | GSEventRun | GSEventRunModal | CFRunLoopRunInMode | CFRunLoopRunSpecific | __CFRunLoopRun | __CFRunLoopDoTimer | __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ | CA::Display::TimerDisplayLink::callback(__CFRunLoopTimer*, void*) | CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long) | -[UIScrollView(Static) _smoothScrollDisplayLink:] | -[UIScrollView(Static) _smoothScrollWithUpdateTime:] | -[UIScrollView setContentOffset:] | -[MyCouponsViewController scrollViewDidScroll:] | -[MyCouponsViewController adjustControllerViewFrame:] | -[OneCouponViewController updateViewsWithCouponEntry:] | +[UIImage imageNamed:] | _UIImageAtPath | _UIImageCallFunctionForAppropriatePath | GetImageAtPath | +[NSObject alloc] | +[NSObject allocWithZone:] | _objc_rootAllocWithZone | class_createInstance | calloc | malloc_zone_calloc
Binary Images:
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0x9666000 - 0x967dffb +MobileDeviceLink (261.0.0 - compatibility 100.0.0) <DFA30D31-E4E3-362C-9723-2B06A4A28D1B> /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.0.sdk/System/Library/PrivateFrameworks/MobileDeviceLink.framework/MobileDeviceLink
0x9689000 - 0x96b5ff3 +AppleAccount (??? - ???) <60AE3B5B-8AF3-3947-B445-E860A5F619EB> /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.0.sdk/System/Library/PrivateFrameworks/AppleAccount.framework/AppleAccount
0x96d3000 - 0x9713ffb +ContentIndex (??? - ???) <289E1C7F-25C7-3A88-8DE1-0A33A80AB13F> /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.0.sdk/System/Library/PrivateFrameworks/ContentIndex.framework/ContentIndex
0x972f000 - 0x9742ff7 +ApplePushService (??? - ???) <6A5A069C-5FF4-32EF-A1B9-0D43D1AAFABE> /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.0.sdk/System/Library/PrivateFrameworks/ApplePushService.framework/ApplePushService
0x9752000 - 0x995cff7 +MediaToolbox (??? - ???) <CB900C13-C29D-3A05-96A3-FFB603F79C4E> /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.0.sdk/System/Library/Frameworks/MediaToolbox.framework/MediaToolbox
0x9a09000 - 0x9a56ffb +iTunesStore (??? - ???) <5EC3BCB6-BE4A-3C47-BF8E-FB90264B61CA> /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.0.sdk/System/Library/PrivateFrameworks/iTunesStore.framework/iTunesStore
0x9a8a000 - 0x9b65ff7 +MusicLibrary (18.0.0 - compatibility 1.0.0) <DFF42BE5-BC6E-3C1F-9BAB-DCFC238DB644> /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.0.sdk/System/Library/PrivateFrameworks/MusicLibrary.framework/MusicLibrary
0x9bcb000 - 0x9bd6ff7 +MediaRemote (??? - ???) <CEC25C07-B332-345D-92C1-1E2FDFCFE5EE> /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.0.sdk/System/Library/PrivateFrameworks/MediaRemote.framework/MediaRemote
0x9be1000 - 0x9c15ff3 +HomeSharing (??? - ???) <9FFBF87E-9AA5-3E05-9F2E-1B60A0E7A2BE> /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.0.sdk/System/Library/PrivateFrameworks/HomeSharing.framework/HomeSharing
0x9c38000 - 0x9c88ff7 +MediaControlSender (??? - ???) <39BBF404-941E-3025-ACC5-786D22E85279> /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.0.sdk/System/Library/PrivateFrameworks/MediaControlSender.framework/MediaControlSender
0x9ca9000 - 0x9d4eff3 +CoreMotion (1491.2.0 - compatibility 1.0.0) <1CC36264-C5EF-3DEB-A082-0A69AB601BD8> /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.0.sdk/System/Library/Frameworks/CoreMotion.framework/CoreMotion
0x9da3000 - 0x9fb0ff3 +VectorKit (??? - ???) <12C31D29-2122-31AD-949A-78BE6D1C6CA3> /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.0.sdk/System/Library/PrivateFrameworks/VectorKit.framework/VectorKit
0xa0c1000 - 0xa4adfff +Altitude (??? - ???) <987AA4C0-FD6B-3801-BAA0-D6D4F2EAE226> /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.0.sdk/System/Library/PrivateFrameworks/Altitude.framework/Altitude
0xa662000 - 0xa67eff3 +liblzma.5.dylib (6.3.0 - compatibility 6.0.0) <A9222B50-A456-3A4D-9E7D-A2B825555F25> /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.0.sdk/usr/lib/liblzma.5.dylib
0xa800000 - 0xa84aff3 +libCGFreetype.A.dylib (600.0.0 - compatibility 64.0.0) <4B3FFCD7-DFB7-3542-A6D4-6A4047B94D58> /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.0.sdk/System/Library/Frameworks/CoreGraphics.framework/Resources/libCGFreetype.A.dylib
0xa86c000 - 0xa894fff +libRIP.A.dylib (600.0.0 - compatibility 64.0.0) <752B122B-8EC1-30AF-944B-0C9E0A0CA550> /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.0.sdk/System/Library/Frameworks/CoreGraphics.framework/Resources/libRIP.A.dylib
0xe6d1000 - 0xe6d3fff +DebuggerIntrospectionSupport.dylib (??? - ???) <E023D484-D1B8-3F2D-A3F9-239FE44D8CB5> /Applications/Xcode.app/Contents/PlugIns/DebuggerFoundation.ideplugin/Contents/Resources/DebuggerIntrospectionSupport.dylib
0x188e2000 - 0x1890ffff +CoreServicesInternal (154.0.0 - compatibility 1.0.0) <E0F0D3E6-CE45-3049-B83A-8E25E7AE8497> /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.0.sdk/System/Library/PrivateFrameworks/CoreServicesInternal.framework/CoreServicesInternal
0x1a654000 - 0x1a78bffb +RawCamera (1.0.3 - compatibility 1.0.0) <2A997668-0AF4-3041-8BD6-F7D9C7541671> /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.0.sdk/System/Library/CoreServices/RawCamera.bundle/RawCamera
0x8fef9000 - 0x8ff2be57 dyld (210.2 - ???) <23516BE4-29BE-350C-91C9-F36E7999F0F1> /usr/lib/dyld
0x909ff000 - 0x90a09fff libsystem_notify.dylib (98.5.0 - compatibility 1.0.0) <7EEE9475-18F8-3099-B0ED-23A3E528ABE0> /usr/lib/system/libsystem_notify.dylib
0x91069000 - 0x91126feb libsystem_c.dylib (825.25.0 - compatibility 1.0.0) <86676789-5895-32E3-B491-FCA52DB508F2> /usr/lib/system/libsystem_c.dylib
0x91bc3000 - 0x91c2bff7 com.apple.framework.IOKit (2.0.1 - ???) <12C97562-CBBD-3255-A998-28A341128FC8> /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit
0x91c2c000 - 0x91c2cfff libkeymgr.dylib (25.0.0 - compatibility 1.0.0) <D5E93F7F-9315-3AD6-92C7-941F7B54C490> /usr/lib/system/libkeymgr.dylib
0x91cb3000 - 0x91cb4ffd libunc.dylib (25.0.0 - compatibility 1.0.0) <5E1EEE9E-3423-33D7-95B2-E4D17DD08C18> /usr/lib/system/libunc.dylib
0x92436000 - 0x92437fff libdnsinfo.dylib (453.18.0 - compatibility 1.0.0) <41C7B8E2-2A81-31DE-BD8B-F0C29E169D4F> /usr/lib/system/libdnsinfo.dylib
0x93f46000 - 0x93f4affe libcache.dylib (57.0.0 - compatibility 1.0.0) <834FDCA7-FE3B-33CC-A12A-E11E202477EC> /usr/lib/system/libcache.dylib
0x94412000 - 0x9441afff libcopyfile.dylib (89.0.0 - compatibility 1.0.0) <4963541B-0254-371B-B29A-B6806888949B> /usr/lib/system/libcopyfile.dylib
0x9495f000 - 0x9496afff libcommonCrypto.dylib (50000.0.0 - compatibility 1.0.0) <D9337AF4-C094-370E-858C-059AB6560719> /usr/lib/system/libcommonCrypto.dylib
0x949e6000 - 0x949edfff libsystem_dnssd.dylib (??? - ???) <885F324F-43A3-30A9-8A6B-3665065CC588> /usr/lib/system/libsystem_dnssd.dylib
0x96053000 - 0x96057ff7 libmacho.dylib (829.0.0 - compatibility 1.0.0) <5280A013-4F74-3F74-BE0C-7F612C49F1DC> /usr/lib/system/libmacho.dylib
0x96198000 - 0x961a6ff3 libsystem_network.dylib (??? - ???) <11CAF6A8-17CF-3178-9348-57C5ED494BA8> /usr/lib/system/libsystem_network.dylib
0x962fe000 - 0x96305ffb libunwind.dylib (35.1.0 - compatibility 1.0.0) <E1E8D8B3-3C78-3AB1-B398-C180DC6DCF05> /usr/lib/system/libunwind.dylib
0x964c7000 - 0x964f4ffe libsystem_m.dylib (??? - ???) <93CEEC8C-FAB5-313C-B0BB-0F4E91E6B878> /usr/lib/system/libsystem_m.dylib
0x97237000 - 0x9723aff7 libcompiler_rt.dylib (30.0.0 - compatibility 1.0.0) <CE5DBDB4-0124-3E2B-9105-989DF98DD108> /usr/lib/system/libcompiler_rt.dylib
0x9752f000 - 0x9753bffd libkxld.dylib (??? - ???) <29C6FCF5-E450-3724-BEA5-278A954A5247> /usr/lib/system/libkxld.dylib
0x9753c000 - 0x9753dfff libremovefile.dylib (23.1.0 - compatibility 1.0.0) <98622D14-DAAB-3AD8-A5D9-C322BF572A98> /usr/lib/system/libremovefile.dylib
0x97976000 - 0x97993ff7 libresolv.9.dylib (??? - ???) <B9742A2A-DF15-3F6E-8FCE-778A58214B3A> /usr/lib/libresolv.9.dylib
0x98177000 - 0x981c3fff libcorecrypto.dylib (??? - ???) <20EBADBA-D6D6-36F0-AE80-168E9AF13DB6> /usr/lib/system/libcorecrypto.dylib
0x9854b000 - 0x98577ff7 libsystem_info.dylib (??? - ???) <2731CC70-DF2E-3BD1-AE73-A3B83C531756> /usr/lib/system/libsystem_info.dylib
0x986a7000 - 0x986a7fff libsystem_blocks.dylib (59.0.0 - compatibility 1.0.0) <3A743C5D-CFA5-37D8-80A8-B6795A9DB04F> /usr/lib/system/libsystem_blocks.dylib
0x99c78000 - 0x99c7afff libdyld.dylib (210.2.3 - compatibility 1.0.0) <05D6FF2A-F09B-309D-95F7-7AF10259C707> /usr/lib/system/libdyld.dylib
0x9a17e000 - 0x9a17efff libSystem.B.dylib (169.3.0 - compatibility 1.0.0) <80E1907E-5E20-31B9-80F8-DEAD57B7367A> /usr/lib/libSystem.B.dylib
0x9a2fe000 - 0x9a318ffc libsystem_kernel.dylib (2050.20.9 - compatibility 1.0.0) <561E35E5-E32E-3BFB-9E8B-C977BA6C4F85> /usr/lib/system/libsystem_kernel.dylib
0x9a5c6000 - 0x9a5cdfff liblaunch.dylib (442.26.2 - compatibility 1.0.0) <310C99F8-0811-314D-9BB9-D0ED6DFA024B> /usr/lib/system/liblaunch.dylib
0x9a6eb000 - 0x9a6ecfff libsystem_sandbox.dylib (??? - ???) <4E42390B-25EC-3530-AF01-337E430C16EB> /usr/lib/system/libsystem_sandbox.dylib
0x9a6ed000 - 0x9a6eefff libquarantine.dylib (52.0.0 - compatibility 1.0.0) <D526310F-DC77-37EA-8F5F-83928EFA3262> /usr/lib/system/libquarantine.dylib
---------------------------------------
重点前几行:
ALLOC 0x1a88b7d0-0x1a88b7e7 [size=24]: thread_ac097a28 |start | main | UIApplicationMain | GSEventRun | GSEventRunModal | CFRunLoopRunInMode | CFRunLoopRunSpecific | __CFRunLoopRun | __CFRunLoopDoTimer | __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ | CA::Display::TimerDisplayLink::callback(__CFRunLoopTimer*, void*) | CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long) | -[UIScrollView(Static) _smoothScrollDisplayLink:] | -[UIScrollView(Static) _smoothScrollWithUpdateTime:] | -[UIScrollView setContentOffset:] | -[MyCouponsViewController scrollViewDidScroll:] | -[MyCouponsViewController adjustControllerViewFrame:] | -[OneCouponViewController updateViewsWithCouponEntry:] | +[UIImage imageNamed:] | _UIImageAtPath | _UIImageCallFunctionForAppropriatePath | GetImageAtPath | ImageRefAtPath | CGImageSourceCreateImageAtIndex | makeImagePlus | CFArrayAppendValue | _CFArrayReplaceValues | CFAllocatorAllocate | __CFAllocatorSystemAllocate | malloc_zone_malloc
这段信息格式化之后是这样的:
ALLOC 0x1a88b7d0-0x1a88b7e7 [size=24]: thread_ac097a28
|start
| main
| UIApplicationMain
| GSEventRun
| GSEventRunModal
| CFRunLoopRunInMode
| CFRunLoopRunSpecific
| __CFRunLoopRun
| __CFRunLoopDoTimer
| __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__
| CA::Display::TimerDisplayLink::callback(__CFRunLoopTimer*, void*)
| CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)
| -[UIScrollView(Static) _smoothScrollDisplayLink:]
| -[UIScrollView(Static) _smoothScrollWithUpdateTime:]
| -[UIScrollView setContentOffset:]
| -[MyCouponsViewController scrollViewDidScroll:]
| -[MyCouponsViewController adjustControllerViewFrame:]
| -[OneCouponViewController updateViewsWithCouponEntry:]
| +[UIImage imageNamed:]
| _UIImageAtPath
| _UIImageCallFunctionForAppropriatePath
| GetImageAtPath
| ImageRefAtPath
| CGImageSourceCreateImageAtIndex
| makeImagePlus
| CFArrayAppendValue
| _CFArrayReplaceValues
| CFAllocatorAllocate
| __CFAllocatorSystemAllocate
| malloc_zone_malloc
很明显,是在这几个函数中malloc了这个dead的对象:
| -[MyCouponsViewController scrollViewDidScroll:]
| -[MyCouponsViewController adjustControllerViewFrame:]
| -[OneCouponViewController updateViewsWithCouponEntry:]
| +[UIImage imageNamed:]
检查对应部分的代码就可以了。
其实用instruments的zombie检查也可以,不过这种crash一般不好重现,所以需要debug的时候及时处理。
有不对的地方欢迎指正。
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