Sophie

Sophie

distrib > Fedora > 14 > x86_64 > by-pkgid > 02e7bc50735df2e365110343fbf39739 > files > 81

comedilib-devel-0.8.1-7.fc14.x86_64.rpm

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
<HTML
><HEAD
><TITLE
>comedi_mark_buffer_written</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
REL="HOME"
TITLE="    Comedi
  "
HREF="index.html"><LINK
REL="UP"
TITLE="    Comedi Function Reference
  "
HREF="x4629.html#FUNCTIONREFERENCE"><LINK
REL="PREVIOUS"
TITLE="comedi_mark_buffer_read"
HREF="r6277.html"><LINK
REL="NEXT"
TITLE="comedi_get_buffer_offset"
HREF="r6323.html"></HEAD
><BODY
CLASS="REFENTRY"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>Comedi: The <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Control and Measurement Device Interface</I
></SPAN
>
handbook
  </TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="r6277.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
></TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="r6323.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><H1
><A
NAME="FUNC-REF-COMEDI-MARK-BUFFER-WRITTEN"
></A
>comedi_mark_buffer_written</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN6304"
></A
><H2
>Name</H2
>comedi_mark_buffer_written&nbsp;--&nbsp;streaming buffer control</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN6307"
></A
><H2
>Synopsis</H2
><DIV
CLASS="FUNCSYNOPSIS"
><P
></P
><A
NAME="AEN6308"
></A
><PRE
CLASS="FUNCSYNOPSISINFO"
>#include &lt;comedilib.h&gt;</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>int comedi_mark_buffer_written</CODE
>(comedi_t * device, unsigned int subdevice, unsigned int num_bytes);</CODE
></P
><P
></P
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN6319"
></A
><H2
>      Description
    </H2
><P
>The function comedi_mark_buffer_written() is used on a subdevice
that has a Comedi output command in progress.  It should only be used
if you are using a mmap() (as opposed to calling write() on the device
file) to write data to Comedi's buffer, since Comedi
will automatically keep track of how many bytes have been
transferred via write() calls.  This function is
used to indicate that the next num_bytes bytes in the buffer
are valid and may be sent to the device.
If there is an error, -1 is returned.</P
><P
>    </P
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="r6277.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="index.html"
ACCESSKEY="H"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="r6323.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>comedi_mark_buffer_read</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="x4629.html#FUNCTIONREFERENCE"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>comedi_get_buffer_offset</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>