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<>声明
* 其实很好奇Android系统中的一些关键守护进程服务的作用;
* 暂且大概分析下它们的作用,这样有助于理解整个系统的工作过程;
* ADB本身也是个复杂的系统,最近在处理ADB相关的修改工作,后续相关adbd的会再添加进来;
<>0 写在前面的
*
只要是操作系统,不用说的就是其中肯定会运行着一些很多守护进程(daemon)来完成很多杂乱的工作。通过系统中的init.rc文件也可以看出来,其中每个service中就包含着系统后台服务进程。
* 而这些服务被分为:core类服务(adbd/servicemanager/healthd/lmkd/logd/vold)和main类服务;
*
main类服务又分为:网络类服务(netd/mdnsd/mtpd/rild)、图形及媒体类服务(surfaceflinger/bootanimation/mediaserver/dnnserver)、其他类服务(installd/keystore/debuggerd/sdcard/Zygote)
<>1 adbd的作用
adbd是Android系统特有的ADB功能中运行在手机/平板端的守护进程,