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Re: File IO preventing sleep
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Re: File IO preventing sleep


  • Subject: Re: File IO preventing sleep
  • From: Lisa Zorn <email@hidden>
  • Date: Wed, 22 May 2002 23:09:32 -0700

On Monday, May 20, 2002, at 09:51 AM, Matt Watson wrote:


On Monday, May 20, 2002, at 09:33 AM, Dean Reece wrote:

You might try stat'ing the file instead of reading it.

Or fstat() since you already have the file open...

Matt & Dean, thanks for the stat/fstat suggestion.

This certainly helps -- it's ... kind of... fixed. However, sometimes it takes longer than it should. For example, I have my system set to sleep after 5 minutes but many a time, after my last read, it'll go dim in 5 minutes and take another 5 minutes to sleep. I receive the IOKit messages at this point -- 10 minutes after my last read.

This bothers me because I don't know what exactly is happening (and my program's users are going to complain that it's not going to sleep probably, and I don't know how it'll scale with longer time-to-sleep preferences), and it's so excruciatingly time consuming to test.

Is there anything I can do to figure this out? Any other suggestions? Why is there separate timing for dimming versus sleeping? What exactly is going on when it dims versus when it sleeps?

Thanks,
-lisa
Glucose Development Corporation -- http://www.glu.com
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  • Follow-Ups:
    • Re: File IO preventing sleep
      • From: Dean Reece <email@hidden>
References: 
 >Re: File IO preventing sleep (From: Matt Watson <email@hidden>)

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