why kill zygote the system do not restart?

[w wylhistory]

Hi All:

           when I kill the zygote by adb shell,why the system do not restart?

           the attachment is the bugreport:

             Can some one give me some advice?

[dh]

Afaik, zygote forks new application/system processes and initialises the DVM for applications. Most system services run within system_server, which is a user process, whereas zygote is root. So, if you kill zygote, the system cannot initiate any app/system processes (including system_server). See list of processes (ps -P) somwhere eight-tenth down the crashreport.

[w wylhistory]

I can see the zygote and system_server are restarted by ps;

but the system_server is blocked at SurfaceFlinger instantiate,so the whole system blocked;

I think it actually blocks at the servicemanager addService of Surfaceflinger,but I do not know why the servicemanager does not   be waked  up,I will check it further;

2011/9/6 dh <david....@uni-ulm.de>

Afaik, zygote forks new application/system processes and initialises the DVM for applications. Most system services run within system_server, which is a user process, whereas zygote is root. So, if you kill zygote, the system cannot initiate any app/system processes (including system_server). See list of processes (ps -P) somwhere eight-tenth down the crashreport.

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[Dianne Hackborn]

Typically this is because of issues in the graphics driver where it hangs when being re-initialized by surface flinger.

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Dianne Hackborn
Android framework engineer
hac...@android.com

Note: please don't send private questions to me, as I don't have time to provide private support, and so won't reply to such e-mails.  All such questions should be posted on public forums, where I and others can see and answer them.

[w wylhistory]

Hi Dianne，

         You are right,finally I find  it stops at lcd driver "wait_for_completion_killable(&mfd->dma->comp)",

         thanks;

        

2011/9/8 Dianne Hackborn <hac...@android.com>