Debuging tech

Debug@yarshure

自我介绍

Unix System Admin

Coder(Python/C)

Apple Developer

Core Animation Speech

agenda

iOS Application launch

静态/动态分析

调试

发布之后

应用程序启动过程

分析工具

file determine file type

strings find the printable strings in a object, or other binary, file

otool object file displaying tool

class-dump examining the Objective-C runtime information stored in Mach-O files

nm display name list (symbol table)

Xcode项目编译

xcodebuild -- build Xcode projects

gcc,clang, dsymutil, lipo,libtool,install_name_tool

codesign -- Create and manipulate code signatures

Xcode项目编译

PackageApplication prepare an application for submission to AppStore or installation by iTunes.

productbuild/productsign -- Build deployable product from Mac OS X Installer packages.

Build log

$ cd /Users/yarshure/Documents/WIFIKey/$ xcodebuild

静态分析: LLVM/Clang Static Analyzer

动态runingNSLog,printf

标准输出重定向

条件编译, 著名软件Release版也print Logfreopen( p, "w", stdout);

#ifdef DEBUG# define DLog(fmt, ...) NSLog((@"%s [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__);#else# define DLog(...)

紧急情况

IPCU（支持Win）

UncaughtExceptions

EXC_BAD_ACCESS is a Mach exception sent by the kernel to your application when you try to access memory that is not mapped for your application. If not handled at the Mach level, it will be translated into a SIGBUS or SIGSEGV BSD signal.

SIGABRT is a BSD signal sent by an application to itself when an NSException or obj_exception_throw is not caught.

UncaughtExceptions

http://cocoawithlove.com/2010/05/handling-unhandled-exceptions-and.html

debug

运行选项

断点

重要

新的旅程

终端

/Developer/usr/bin/lldb

Crash Reports

network Tools

推荐资源

WWDC11 123

WWDC11 319

WWDC11 321