android启动流程.doc

android 启动流程
In this topic you will learn some information about Android process management. First let’s take a look at the launched processes during Android booting.
USER PID PPID VSIZE RSS WCHAN PC NAME
root 1 0 264 176 6c 0000c36c S /init
root 28 1 724 308 c0051354 S /system/bin/sh
system 30 1 796 248 c026516c afe0b74c S /system/bin/servicemanager
root 31 1 1824 316 ffffffff afe0b50c S /system/bin/mountd
root 32 1 652 248 c02976e0 afe0c0bc S /system/bin/debuggerd
radio 33 1 5344 664 ffffffff afe0bdbc S /system/bin/rild
root 34 1 71028 18828 c00ad308 afe0b874 S zygote
media 37 1 16812 3456 ffffffff afe0b74c S /system/bin/mediaserver
root 39 1 788 288 c02f9ae4 afe0b50c S /system/bin/installd
system 86 34 187756 21836 ffffffff afe0b74c S system_server
radio 118 34 103476 13896 ffffffff afe0c824 .
app_4 124 34 117848 19248 ffffffff afe0c824 S
app_5 139 34 98672 11516 ffffffff afe0c824 .
app_3 151 34 92096 10976 ffffffff afe0c824 .
app_6 161 34 94436 12616 ffffffff afe0c824 .
app_9 173 34 93248 11728 ffffffff afe0c824 S
app_15 182 34 91848 9764 ffffffff afe0c824 .
app_16 190 34 94524 10812 ffffffff afe0c824 S
They can be divided into three kinds.
Root Process
init is the first process after kernel boo