1COMEDI_SET_BUFFER_SI(3)        Comedi reference        COMEDI_SET_BUFFER_SI(3)
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NAME

6       comedi_set_buffer_size - streaming buffer size of subdevice
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SYNOPSIS

9       #include <comedilib.h>
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11       int comedi_set_buffer_size(comedi_t * device, unsigned int subdevice,
12                                  unsigned int size);
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DESCRIPTION

15       The function comedi_set_buffer_size changes the size of the streaming
16       buffer for the subdevice specified by device and subdevice. The buffer
17       size will be set to size bytes, rounded up to a multiple of the virtual
18       memory page size. The virtual memory page size can be determined using
19       sysconf(_SC_PAGE_SIZE).
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21       This function does not require special privileges. However, it is
22       limited to a (adjustable) maximum buffer size, which can be changed by
23       a privileged user calling comedi_set_max_buffer_size, or running the
24       program comedi_config.
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RETURN VALUE

27       On success, comedi_set_buffer_size returns the new buffer size in
28       bytes. On failure, -1 is returned.
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AUTHORS

31       David Schleef <ds@schleef.org>
32           Author.
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34       Frank Mori Hess <fmhess@users.sourceforge.net>
35           Author.
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37       Herman Bruyninckx <Herman.Bruyninckx@mech.kuleuven.ac.be>
38           Author.
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40       Bernd Porr <tech@linux-usb-daq.co.uk>
41           Author.
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43       Ian Abbott <abbotti@mev.co.uk>
44           Author.
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46       Éric Piel <piel@delmic.com>
47           Author.
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50       Copyright © 1998-2003 David Schleef
51       Copyright © 2001-2003, 2005, 2008 Frank Mori Hess
52       Copyright © 2002-2003 Herman Bruyninckx
53       Copyright © 2012 Bernd Porr
54       Copyright © 2012 Ian Abbott
55       Copyright © 2012, 2015 Éric Piel
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57       This document is part of Comedilib. In the context of this document,
58       the term "source code" as defined by the license is interpreted as the
59       XML source.
60
61       This library is free software; you can redistribute it and/or modify it
62       under the terms of the GNU Lesser General Public License as published
63       by the Free Software Foundation, version 2.1 of the License.
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65       This library is distributed in the hope that it will be useful, but
66       WITHOUT ANY WARRANTY; without even the implied warranty of
67       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
68       General Public License for more details.
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70       You should have received a copy of the GNU Lesser General Public
71       License along with this library; if not, write to the Free Software
72       Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
73       USA.
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78Comedi                            05/11/2017           COMEDI_SET_BUFFER_SI(3)
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