Logcat -b events and eventlogtags print the location correspondence of the events log in the code

logcat -b events and EventLogTags Print this... In your code events log Location correspondence of

1, events log for activity Life cycle :

1, events log for activity Life cycle :
logcat -b events | grep -E "wm_|am_"
events log:  wm_create_task: [0,27]
events log Corresponding code 
grep -r  "writeWm" ./frameworks/base/services --include *.java --color

2, events log for power relevant :

2, events log for power relevant :
logcat -b events | grep -E "power_"
events log: power_screen_state: [0,3,0,0,457]
events log Corresponding code :
grep -r  "writePower" ./frameworks/base/services --include *.java --color

And so on

3, events log The law of the corresponding code is ：

events log The law of the corresponding code is ：
events log The first field , such as wm_xxx
 The corresponding code can be passed through  grep  Grab  writeWmxxx  Find out where it was printed events log

 for example ： wm_create_task: [0,27]  The corresponding code function is ：writeWmCreateTask()
 stay android  Search in source code  grep -r "writeWm"  You can find out all wm_ Of event logs