cvs commit: src/usr.sbin/powerd Makefile powerd.c

[Nate Lawson]

njl         2005-10-19 04:48:44 UTC

  FreeBSD src repository

  Modified files:
    usr.sbin/powerd      Makefile powerd.c 
  Log:
  Use a pipe for reading devd events as another method of getting the AC line
  status.  Add a thread that waits for events on the named pipe instead of
  polling the line status via apm or the ACPI sysctl.  Additionally, use
  robust error handling in case devd goes away or we temporarily can't set
  a frequency (i.e., passive cooling has preempted our setting).
  
  Later, this should be improved so that if adaptive control is not being used,
  we will block while waiting for AC line events, saving a little CPU.
  
  Submitted by:   Frederik Lindberg <fli+freebsd-current/shapeshifter.se>
  
  Revision  Changes    Path
  1.4       +1 -0      src/usr.sbin/powerd/Makefile
  1.13      +178 -28   src/usr.sbin/powerd/powerd.c