為什么需要符號(hào)化
Filtered syslog:
None found
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0:
0 ...gou.sogouinput.BaseKeyboard 0x0000000100196000 0x100030000 + 1466368
1 ...gou.sogouinput.BaseKeyboard 0x0000000100191ca4 0x100030000 + 1449124
2 ...gou.sogouinput.BaseKeyboard 0x00000001001aadd8 0x100030000 + 1551832
3 ...gou.sogouinput.BaseKeyboard 0x00000001003942b0 0x100030000 + 3556016
4 ...gou.sogouinput.BaseKeyboard 0x0000000100393b30 0x100030000 + 3554096
5 ...gou.sogouinput.BaseKeyboard 0x00000001003c7bbc 0x100030000 + 3767228
6 ...gou.sogouinput.BaseKeyboard 0x00000001003c8a48 0x100030000 + 3770952
7 ...gou.sogouinput.BaseKeyboard 0x0000000100103158 0x100030000 + 864600
8 ...gou.sogouinput.BaseKeyboard 0x0000000100391d10 0x100030000 + 3546384
9 ...gou.sogouinput.BaseKeyboard 0x00000001003912c4 0x100030000 + 3543748
10 ...gou.sogouinput.BaseKeyboard 0x00000001003b4ba4 0x100030000 + 3689380
11 ...gou.sogouinput.BaseKeyboard 0x0000000100268174 0x100030000 + 2326900
12 ...gou.sogouinput.BaseKeyboard 0x0000000100268580 0x100030000 + 2327936
上面是sogou輸入法的crash日志船惨。像0x100030000 + 1466368這樣的都只給出了內(nèi)存的崩潰地址粱锐。但無法得到是哪個(gè)方法調(diào)用扛邑。符號(hào)化就是將這些內(nèi)存地址轉(zhuǎn)換成對(duì)應(yīng)的可讀性方法。
準(zhǔn)備相關(guān)文件
要對(duì)crash日志進(jìn)行符號(hào)化蔬崩，需要四樣?xùn)|西：
- 從設(shè)備上導(dǎo)出的crash 日志
-
.dSYM文件 -
.app文件 -
symbolicatecrash工具
crash 日志的導(dǎo)出
將設(shè)備連接電腦海雪，xcode->Window->devices->選擇設(shè)備->view device log->找到對(duì)應(yīng)的crash日志->export log舱殿。
生成.dSYM文件
crash日志的符號(hào)化主要借助dSYM文件奥裸。得到dSYM文件的方法：Target -> Build Setting -> Debug Information Format -> DWARF with dSYM File沪袭。這樣就可以和.app一起生成.dSYM文件了湾宙。
app`文件
略
symbolicatecrash工具
- 找到symbolicatecrash
find /Applications/Xcode.app -name symbolicatecrash -type f11
-
稍等一會(huì)就會(huì)有路徑輸出冈绊，這個(gè)路徑就是symbolicatecrash的路徑
路徑可能不止一個(gè)侠鳄，隨意選一個(gè)
/Applications/Xcode.app/Contents/SharedFrameworks/DVTFoundation.framework/Versions/A/Resources/symbolicatecrash
-
用命令將symbolicatecrash拷貝到桌面的crash文件夾里面，與.app和.app.dSYM放一起（手動(dòng)找到symbolicatecrash死宣，拷貝出來也行）
當(dāng)然伟恶，不cp也可以的毅该。為了清楚和方便使用，copy出來放一起挡育。
cp /Applications/Xcode.app/Contents/SharedFrameworks/DVTFoundation.framework/Versions/A/Resources/symbolicatecrash ~/Desktop
export DEVELOPER_DIR="/Applications/XCode.app/Contents/Developer"
符號(hào)化
./symbolicatecrash XXXApp.crash XXXApp.app > crash.log
結(jié)果
對(duì)比.crash和.log文件可以發(fā)現(xiàn)地址被替換成方法名、代碼行等有用信息母赵。
//部分內(nèi)容被修改過了
Filtered syslog:
None found
Last Exception Backtrace:
0 CoreFoundation 0x1894fafe0 __exceptionPreprocess + 124
1 libobjc.A.dylib 0x187f5c538 objc_exception_throw + 56
2 CoreFoundation 0x1894faca8 -[NSException raise] + 12
3 Foundation 0x189f1068c -[NSObject(NSKeyValueCoding) setValue:forKey:] + 272
4 XXXXApp 0x102fb5850 -[XXXXAppManager enterRooms] (XXXXAppManager.m:33)
5 XXXXApp 0x102f6de2c +[XXXXAppSDK showChatModule] (XXXXAppSDK.m:23)
6 XXXXApp 0x100a918d4 +[XXXXAppManager callName:selectorName:params:] (XXXXAppManager.m:28)
7 XXXXApp 0x100278bfc -[XXXXAppTopView buttonClick:] (XXXXAppView.m:112)
8 UIKit 0x18f661c54 -[UIApplication sendAction:to:from:forEvent:] + 96
Filtered syslog:
None found
Last Exception Backtrace:
0 CoreFoundation 0x1894fafe0 __exceptionPreprocess + 124
1 libobjc.A.dylib 0x187f5c538 objc_exception_throw + 56
2 CoreFoundation 0x1894faca8 -[NSException raise] + 12
3 Foundation 0x189f1068c -[NSObject(NSKeyValueCoding) setValue:forKey:] + 272
4 XXXXApp 0x102fb5850 0x1000d4000 + 49158224
5 XXXXApp 0x102f6de2c 0x1000d4000 + 48864812
6 XXXXApp 0x100a918d4 0x1000d4000 + 10213588
7 XXXXApp 0x100278bfc 0x1000d4000 + 1723388
8 UIKit 0x18f661c54 -[UIApplication sendAction:to:from:forEvent:] + 96
- debug 模式下跑的包凹嘲，產(chǎn)生的crash日志不需要符號(hào)化
- 線上環(huán)境app集成了Crashlytics，上報(bào)的crash已經(jīng)符號(hào)化了
- 主要是回歸測試階段對(duì)于部分崩潰需要這種分析方式
