From owner-cvs-all  Tue Nov 21 11:36:39 2000
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From: Alan Cox <alc@FreeBSD.org>
Date: Tue, 21 Nov 2000 11:36:36 -0800 (PST)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/kern vfs_aio.c src/sys/sys signal.h
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alc         2000/11/21 11:36:36 PST

  Modified files:
    sys/kern             vfs_aio.c 
    sys/sys              signal.h 
  Log:
  Provide a new interface for the user of aio_read() and aio_write() to request
  a kevent upon completion of the I/O.  Specifically, introduce a new type
  of sigevent notification, SIGEV_EVENT.  If sigev_notify is SIGEV_EVENT,
  then sigev_notify_kqueue names the kqueue that should receive the event
  and sigev_value contains the "void *" is copied into the kevent's udata
  field.
  
  In contrast to the existing interface, this one: 1) works on
  the Alpha 2) avoids the extra copyin() call for the kevent because all
  of the information needed is in the sigevent and 3) could be
  applied to request a single kevent upon completion of an entire lio_listio().
  
  Reviewed by:	jlemon
  
  Revision  Changes    Path
  1.87      +34 -30    src/sys/kern/vfs_aio.c
  1.25      +8 -2      src/sys/sys/signal.h



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