surfaceflinger in its own process 이유?
1. 이슈
- SurfaceFlinger 서비스가 이전에는 system_server 프로세스 안에서 수행되었는데
언제부터인가 독립적인 프로세스로 나왔다.
- 왜?, 언제?
2. 분석
- init.rc에 보면 독립적인 프로세스로 실행하는 부분이 있다.
- 해당 부분의 git 로그를 살펴보자
- [android-jb/system/core]# git blame rootdir/init.rc | vi -
310 a40481b2 (Mathias Agopian 2011-03-03 18:48:30 -0800 310) setprop system_init.startsurfaceflinger 0
...
...
397 a40481b2 (Mathias Agopian 2011-03-03 18:48:30 -0800 397) service surfaceflinger /system/bin/surfaceflinger
398 a40481b2 (Mathias Agopian 2011-03-03 18:48:30 -0800 398) class main
399 a40481b2 (Mathias Agopian 2011-03-03 18:48:30 -0800 399) user system
400 a40481b2 (Mathias Agopian 2011-03-03 18:48:30 -0800 400) group graphics
401 a40481b2 (Mathias Agopian 2011-03-03 18:48:30 -0800 401) onrestart restart zygote
398 a40481b2 (Mathias Agopian 2011-03-03 18:48:30 -0800 398) class main
399 a40481b2 (Mathias Agopian 2011-03-03 18:48:30 -0800 399) user system
400 a40481b2 (Mathias Agopian 2011-03-03 18:48:30 -0800 400) group graphics
401 a40481b2 (Mathias Agopian 2011-03-03 18:48:30 -0800 401) onrestart restart zygote
- git log로 해당 commit의 로그 조사
- [android-jb/system/core]# git log | vi -
- "a40481b2 " 로 필터링
13790 commit a40481b2cc604b8b278d509f120cf496c4c318f2
13791 Author: Mathias Agopian <mathias@google.com>
13792 Date: Thu Mar 3 18:48:30 2011 -0800
13793
13794 Run surfaceflinger in its own process. [DO NOT MERGE]
13795
13796 This is to allow OpenGL ES rendering from the system process,
13797 and help with debugging.
13798
13799 Bug: 4086003
13800 Change-Id: I732e95f4fcaa358f430cc195d8e63a69263bffdc
13791 Author: Mathias Agopian <mathias@google.com>
13792 Date: Thu Mar 3 18:48:30 2011 -0800
13793
13794 Run surfaceflinger in its own process. [DO NOT MERGE]
13795
13796 This is to allow OpenGL ES rendering from the system process,
13797 and help with debugging.
13798
13799 Bug: 4086003
13800 Change-Id: I732e95f4fcaa358f430cc195d8e63a69263bffdc
3. 결론
- When: 2011년 3월 3일
- Who: Mathias Agopian <mathias@google.com>
- Why?: This is to allow OpenGL ES rendering from the system process and help with debugging
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