panhongwei / Tracereader
android小工具,通过读取trace文件,回溯整个整个程序执行调用树。
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TraceReader
1.简述
Android 调试工具ddms的devices栏目存在一个功能叫做start method profiling,此按钮顾名思义是启动method profiling的,而Android的Method Profiling功能,是可以在一段时间内记录所有运行过的函数,最后生成一个xxx.trace文件。xxx.trace文件比较有趣,如果分析andorid源码可以知道,xxx.trace文件按线程和时间记录了method的enter和exit事件。也就是说,如果我们能够读取xxx.trace文件,那么我们就能够获取到某段时间,某个app运行过的java函数。
2.功能
于是乎,便有个这个工具,目前更新到TraceReader v1.1,实现了如下功能:
1)支持拖拽解析xx.trace。
2)支持显示线程。
3)支持树形显示方法调用
4)支持按列显示运行方法
5)支持搜索
6)支持复制、重命名
7)支持显示调用时间
3.用法
解析trace文件,用法如下:
byte[] bytes=BytesHelper.toByteArray(fl.getPath());
Trace trace=new Trace(bytes);
trace.getThreadList();
3.原理
TODO….
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