如何在 Eclipse 中有效地调试用 JNI 包装的 C 代码?(安卓开发)

2022-01-10 00:00:00 c android-ndk android java java-native-interface

我有一个段错误，但我完全不知道如何找到它.

I've got a segfault but I have absolutely no idea how to locate it.

提示?

推荐答案

可以使用Android NDK Stacktrace Analyzer.

这些步骤在 wiki 上，但是基本上你需要从 logcat 获取堆栈跟踪到一个文件 (adb logcat > mycrash.log)，然后将你的库转储到一个文本文件，然后在它们两个上运行程序.这是我用来做很多事情的 shell 脚本:

The steps are on the wiki, but basically you need to get the stack trace from logcat into a file (adb logcat > mycrash.log), then dump your library to a text file, then run the program on the two of them. Here's the shell script I use to do the lot:

#!/bin/sh
if test $# -lt 2 ; then
    echo "Extract readable stack trace from Android logcat crash"
    echo "Usage $0 lib.so crash.log"
    exit 1
fi
of=$(mktemp)
echo "Disassemble $1"
~/tools/android-ndk-r5/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86/bin/arm-linux-androideabi-objdump -S $1 > $of
echo "Parse stack trace in $2"
~/bin/parse_stack.py $of $2

根据需要更改 Android NDK 和 parse_stack.py 文件的路径.

Change the paths to the Android NDK and parse_stack.py file as you need.

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