JNI崩溃调试

JNI崩溃了，系统日志会打印堆栈信息，所以第一步就是取日志

adb shell  logcat -v threadtime >>d:/log.txt

然后找到日志里面的关键字backtrace例如我的日志是这样的

- ::38.362     F DEBUG   : backtrace:

- ::38.363     F DEBUG   :     # pc 00014d9a  /data/app/com.cloudtv.xdogact-/lib/arm/liblocalser.so

- ::38.363     F DEBUG   :     # pc 0000d741  /data/app/com.cloudtv.xdogact-/lib/arm/liblocalser.so (_Z9WriteHeadR4CUrl+)

- ::38.363     F DEBUG   :     # pc 0000e895  /data/app/com.cloudtv.xdogact-/lib/arm/liblocalser.so (_Z6runSerRVb+)

- ::38.363     F DEBUG   :     # pc 0000a999  /data/app/com.cloudtv.xdogact-/lib/arm/liblocalser.so (_Z5DoSerPv+)

现在想定位第三行，就是0000d741对应代码的位置，就只需要把代码填入下面的脚本进替换，然后执行就OK了

#!/bin/bash
dir=$(pwd)
export PATH=$PATH:/android-ndk-r11c/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/
export PATH=$PATH:/android-ndk-r11c/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin
addr=0000d741
arm-linux-androideabi-addr2line -e $dir/obj/local/armeabi-v7a/liblocalser.so $addr
aarch64-linux-android-addr2line -e $dir/obj/local/arm64-v8a/liblocalser.so $addr