2014/10/15 下午 10:07:55

iphone Programming Glossary: ebp

http://stackoverflow.com/questions/1733317/exc-bad-access-sigsegv-crash

with X86 Thread State 32 bit eax 0x00f797f0 ebx 0x305063d1 ecx 0x9117c334 edx 0xc0000003 edi 0x00f7b3b0 esi 0xbfffeaa4 ebp 0xbfffea28 esp 0xbfffe8a8 ss 0x0000001f efl 0x00010206 eip 0x910e0688 cs 0x00000017 ds 0x0000001f es 0x0000001f fs 0x00000000..

Xcode/GDB: How to get information about an exception that was just thrown?

http://stackoverflow.com/questions/3327828/xcode-gdb-how-to-get-information-about-an-exception-that-was-just-thrown

the stack so the syntax is considerably more horrible. The shortest expression I could construct that gets to it is id ebp 8 . To make things less painful I suggest using a convenience variable gdb set exception id ebp 8 gdb po exception gdb po.. that gets to it is id ebp 8 . To make things less painful I suggest using a convenience variable gdb set exception id ebp 8 gdb po exception gdb po exception name gdb po exception reason You can also set exception automatically whenever the breakpoint..

NSNotificationCenter trapping and tracing all NSNotifications

http://stackoverflow.com/questions/3725234/nsnotificationcenter-trapping-and-tracing-all-nsnotifications

thing I tried was setting a breakpoint towards NSNotificationCenter postNotification and then run po NSNotification ebp 16 inside the gdb console whenever my breakpoint is trapped. That did reveal a few notifications but not all that I am expecting.. a breakpoint at __CFXNotificationPost_old CoreFoundation and bundled that with a Debugger Command po NSNotification ebp 12 . All of this is nicely doable within the Xcode GUI click on Run on the Xcode application menu top of the screen select.. click on the on the very right side select Debugger Command on that dropdown list enter po NSNotification ebp 12 you may also want to activate logging by checking the Log checkbox at the bottom run your app in a simulator debug session..

How do I tell iOS that I do not want the app to stay in the background?

http://stackoverflow.com/questions/6127560/how-do-i-tell-ios-that-i-do-not-want-the-app-to-stay-in-the-background

applicationDidResume . Here comes the stack trace 0x00cc5994 0034 mov 0x8 eax eax 0x00cc5991 0031 mov 0x8 ebp eax 0x00cc598d 0027 mov eax 0x4 esp 0x00cc5987 0021 mov 0x4e082 ebx eax 0x00cc597f 0013 movl 0x0 0x8 esp 0x00cc597e 0012..

Crash when using gesture recognizers in StoryBoard

http://stackoverflow.com/questions/9035826/crash-when-using-gesture-recognizers-in-storyboard

the object's debugDescription like this gdb frame 0 #0 0x013bcbff in NSObject doesNotRecognizeSelector gdb po int ebp 2 this is my test string On the device you do this gdb frame 0 #0 0x344bca22 in NSObject doesNotRecognizeSelector gdb po..