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From: Robert Watson <rwatson@FreeBSD.org>
Date: Wed, 1 Oct 2008 13:26:52 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org
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Subject: cvs commit: src/sys/kern uipc_socket.c
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rwatson     2008-10-01 13:26:52 UTC

  FreeBSD src repository

  Modified files:
    sys/kern             uipc_socket.c 
  Log:
  SVN rev 183512 on 2008-10-01 13:26:52Z by rwatson
  
  Various cleanups for soreceive_dgram():
  
  - Update or remove comments that were left over from the original
    soreceive_generic() implementation.  Quite a few were misleading in the
    context of the new code.
  - Since soreceive_dgram() has a simpler structure, replace several gotos
    with a while loop making the invariants more clear.
  - In the blocking while loop, don't try to handle cases incompatible with
    the loop invariant (since m is always NULL, don't check for and handle
    non-NULL).
  - Don't drop and re-acquire the socket buffer lock unnecessarily after
    sbwait() returns, which may help reduce lock contention (etc).
  - Assume PR_ATOMIC since we assert it at the top of the function.
  
  MFC after:      3 days
  
  Revision  Changes    Path
  1.316     +19 -58    src/sys/kern/uipc_socket.c