cvs commit: src/sys/sys queue.h

[Ed Maste]

emaste      2005-11-18 19:41:55 UTC

  FreeBSD src repository

  Modified files:
    sys/sys              queue.h 
  Log:
  Add sanity checking for QUEUE(3) lists under INVARIANTS.  Races may lead
  to list corruption, which can be difficult to unravel in a post-mortem
  analysis.  These checks verify that prev and next pointers are consistent
  when inserting or removing elements, thus catching any corruption earlier.
  
  Also use TRASHIT to break LIST and SLIST link pointers on element removal,
  from mlaier via -hackers.
  
  Reviewed by:    mlaier
  Approved by:    rwatson (mentor)
  
  Revision  Changes    Path
  1.62      +35 -2     src/sys/sys/queue.h