AndroidLoggingSystem

Host

liblog

radio

event

android.util.log

System.out/System.err

Kernal

adbServer

/dev/log/main/dev/log/radio/dev/log/event/dev/log/system

Native program

Target

User

com.android.internal.osAndroidPrintStream

Java program

system

logcat

adbd

stdout/stderr

adb logcat

main