Update to bigreqsproto 1.1.1. no functionnal change.

This commit is contained in:
matthieu 2010-10-31 09:38:20 +00:00
parent 38888f991b
commit 88681051e8
7 changed files with 831 additions and 12 deletions

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@ -1,3 +1,116 @@
commit 59730aba859c0b586b7e63e79c07b7741719845d
Author: Alan Coopersmith <alan.coopersmith@oracle.com>
Date: Fri Oct 29 20:21:07 2010 -0700
bigreqsproto 1.1.1
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
commit f7f5f73576dbfeba63be400d16ec9e815962fea7
Author: Alan Coopersmith <alan.coopersmith@oracle.com>
Date: Fri Oct 29 20:19:29 2010 -0700
Cleanup bigreq.xml a bit
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
commit 3145dbb0c713a24e58f642a2acdafb5b1f63d948
Author: Matt Dew <matt@osource.org>
Date: Mon Jun 28 08:09:05 2010 -0400
specs: convert bigreq.ms from xorg-docs module to DocBook XML
Signed-off-by: Gaetan Nadon <memsize@videotron.ca>
commit 18e93e57afeed6ea9872e7aab90da47f334690e1
Author: Gaetan Nadon <memsize@videotron.ca>
Date: Sun Mar 28 19:25:52 2010 -0400
config: update AC_PREREQ statement to 2.60
Unrelated to the previous patches, the new value simply reflects
the reality that the minimum level for autoconf to configure
all x.org modules is 2.60 dated June 2006.
ftp://ftp.gnu.org/gnu/autoconf/autoconf-2.60.tar.gz
Signed-off-by: Gaetan Nadon <memsize@videotron.ca>
commit b77888df9f01a9332d3cd15c413e5caa7fa18d80
Author: Gaetan Nadon <memsize@videotron.ca>
Date: Sun Mar 28 19:00:30 2010 -0400
config: remove the pkgconfig pc.in file from EXTRA_DIST
Automake always includes it in the tarball.
Signed-off-by: Gaetan Nadon <memsize@videotron.ca>
commit 1c9119c86437a58df4890b5ebf79bfdab40f0997
Author: Gaetan Nadon <memsize@videotron.ca>
Date: Sun Nov 22 19:24:47 2009 -0500
Makefile.am: add ChangeLog and INSTALL on MAINTAINERCLEANFILES
Now that the INSTALL file is generated.
Allows running make maintainer-clean.
commit c3e90c94335ee9f835ec2546782547f0aaa46934
Author: Gaetan Nadon <memsize@videotron.ca>
Date: Mon Nov 16 11:13:29 2009 -0500
README: file created or updated #24206
Contains a set of URLs to freedesktop.org.
commit 104cb17755f7529a8f4410abad84398c0a4fd839
Author: Gaetan Nadon <memsize@videotron.ca>
Date: Sun Nov 15 19:45:26 2009 -0500
Makefile.am: ChangeLog not required: EXTRA_DIST or *CLEANFILES #24432
ChangeLog filename is known to Automake and requires no further
coding in the makefile.
commit 862e353a49eaa17dd60882b5941d4beff969860c
Author: Gaetan Nadon <memsize@videotron.ca>
Date: Sun Nov 15 18:31:28 2009 -0500
Makefile.am: INSTALL file is missing or incorrect #24206
The standard GNU file on building/installing tarball is copied
using the XORG_INSTALL macro contained in XORG_DEFAULT_OPTIONS
Add INSTALL target
commit 07c29532215f8a210aa871fde3c8f5907f325ca2
Author: Gaetan Nadon <memsize@videotron.ca>
Date: Sun Nov 15 18:11:36 2009 -0500
configure.ac: deploy the new XORG_DEFAULT_OPTIONS #24242
This macro aggregate a number of existing macros that sets commmon
X.Org components configuration options. It shields the configuration file from
future changes.
commit fb8a4e291007c3cc25f3dda7a9e69bb6f1a8cc15
Author: Gaetan Nadon <memsize@videotron.ca>
Date: Sun Nov 15 13:55:24 2009 -0500
configure.ac: AM_MAINTAINER_MODE missing #24238
This turns off maintainer mode build rules in tarballs.
Works in conjunction with autogen.sh --enable-maintainer-mode
commit c242da1467928c1e43b2ae0b12876aa4487aac23
Author: Gaetan Nadon <memsize@videotron.ca>
Date: Sat Nov 14 18:26:46 2009 -0500
.gitignore: use common defaults with custom section # 24239
Using common defaults will reduce errors and maintenance.
Only the very small or inexistent custom section need periodic maintenance
when the structure of the component changes. Do not edit defaults.
commit e19e245ff8e5ddedbcc5853786ca55b56f8ab40c
Author: Peter Hutterer <peter.hutterer@who-t.net>
Date: Tue Aug 11 10:28:21 2009 +1000

291
proto/bigreqsproto/INSTALL Normal file
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@ -0,0 +1,291 @@
Installation Instructions
*************************
Copyright (C) 1994, 1995, 1996, 1999, 2000, 2001, 2002, 2004, 2005,
2006, 2007, 2008 Free Software Foundation, Inc.
This file is free documentation; the Free Software Foundation gives
unlimited permission to copy, distribute and modify it.
Basic Installation
==================
Briefly, the shell commands `./configure; make; make install' should
configure, build, and install this package. The following
more-detailed instructions are generic; see the `README' file for
instructions specific to this package.
The `configure' shell script attempts to guess correct values for
various system-dependent variables used during compilation. It uses
those values to create a `Makefile' in each directory of the package.
It may also create one or more `.h' files containing system-dependent
definitions. Finally, it creates a shell script `config.status' that
you can run in the future to recreate the current configuration, and a
file `config.log' containing compiler output (useful mainly for
debugging `configure').
It can also use an optional file (typically called `config.cache'
and enabled with `--cache-file=config.cache' or simply `-C') that saves
the results of its tests to speed up reconfiguring. Caching is
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If you need to do unusual things to compile the package, please try
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you want to change it or regenerate `configure' using a newer version
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The simplest way to compile this package is:
1. `cd' to the directory containing the package's source code and type
`./configure' to configure the package for your system.
Running `configure' might take a while. While running, it prints
some messages telling which features it is checking for.
2. Type `make' to compile the package.
3. Optionally, type `make check' to run any self-tests that come with
the package.
4. Type `make install' to install the programs and any data files and
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Compilers and Options
=====================
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by setting variables in the command line or in the environment. Here
is an example:
./configure CC=c99 CFLAGS=-g LIBS=-lposix
*Note Defining Variables::, for more details.
Compiling For Multiple Architectures
====================================
You can compile the package for more than one kind of computer at the
same time, by placing the object files for each architecture in their
own directory. To do this, you can use GNU `make'. `cd' to the
directory where you want the object files and executables to go and run
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CXX="g++ -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
CPP="gcc -E" CXXCPP="g++ -E"
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==================
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=================
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==================
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==========================
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================
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`PREFIX/etc/config.site' if it exists. Or, you can set the
`CONFIG_SITE' environment variable to the location of the site script.
A warning: not all `configure' scripts look for a site script.
Defining Variables
==================
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environment passed to `configure'. However, some packages may run
configure again during the build, and the customized values of these
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them in the `configure' command line, using `VAR=value'. For example:
./configure CC=/usr/local2/bin/gcc
causes the specified `gcc' to be used as the C compiler (unless it is
overridden in the site shell script).
Unfortunately, this technique does not work for `CONFIG_SHELL' due to
an Autoconf bug. Until the bug is fixed you can use this workaround:
CONFIG_SHELL=/bin/bash /bin/bash ./configure CONFIG_SHELL=/bin/bash
`configure' Invocation
======================
`configure' recognizes the following options to control how it
operates.
`--help'
`-h'
Print a summary of all of the options to `configure', and exit.
`--help=short'
`--help=recursive'
Print a summary of the options unique to this package's
`configure', and exit. The `short' variant lists options used
only in the top level, while the `recursive' variant lists options
also present in any nested packages.
`--version'
`-V'
Print the version of Autoconf used to generate the `configure'
script, and exit.
`--cache-file=FILE'
Enable the cache: use and save the results of the tests in FILE,
traditionally `config.cache'. FILE defaults to `/dev/null' to
disable caching.
`--config-cache'
`-C'
Alias for `--cache-file=config.cache'.
`--quiet'
`--silent'
`-q'
Do not print messages saying which checks are being made. To
suppress all normal output, redirect it to `/dev/null' (any error
messages will still be shown).
`--srcdir=DIR'
Look for the package's source code in directory DIR. Usually
`configure' can determine that directory automatically.
`--prefix=DIR'
Use DIR as the installation prefix. *Note Installation Names::
for more details, including other options available for fine-tuning
the installation locations.
`--no-create'
`-n'
Run the configure checks, but stop before creating any output
files.
`configure' also accepts some other, not widely useful, options. Run
`configure --help' for more details.

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@ -1,3 +1,5 @@
SUBDIRS=specs
bigreqsdir = $(includedir)/X11/extensions
bigreqs_HEADERS = \
bigreqsproto.h \
@ -6,14 +8,15 @@ bigreqs_HEADERS = \
pkgconfigdir = $(libdir)/pkgconfig
pkgconfig_DATA = bigreqsproto.pc
EXTRA_DIST = bigreqsproto.pc.in
EXTRA_DIST += ChangeLog
MAINTAINERCLEANFILES = ChangeLog
MAINTAINERCLEANFILES = ChangeLog INSTALL
.PHONY: ChangeLog
.PHONY: ChangeLog INSTALL
INSTALL:
$(INSTALL_CMD)
ChangeLog:
$(CHANGELOG_CMD)
dist-hook: ChangeLog
dist-hook: ChangeLog INSTALL

30
proto/bigreqsproto/README Normal file
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@ -0,0 +1,30 @@
Big Requests Extension
This extension defines a protocol to enable the use of requests
that exceed 262140 bytes in length.
Extension name: BIG-REQUESTS
All questions regarding this software should be directed at the
Xorg mailing list:
http://lists.freedesktop.org/mailman/listinfo/xorg
Please submit bug reports to the Xorg bugzilla:
https://bugs.freedesktop.org/enter_bug.cgi?product=xorg
The master development code repository can be found at:
git://anongit.freedesktop.org/git/xorg/proto/bigreqsproto
http://cgit.freedesktop.org/xorg/proto/bigreqsproto
For patch submission instructions, see:
http://www.x.org/wiki/Development/Documentation/SubmittingPatches
For more information on the git code manager, see:
http://wiki.x.org/wiki/GitPage

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@ -1,12 +1,19 @@
AC_PREREQ([2.57])
AC_INIT([BigReqsProto], [1.1.0], [https://bugs.freedesktop.org/enter_bug.cgi?product=xorg])
AC_PREREQ([2.60])
AC_INIT([BigReqsProto], [1.1.1],
[https://bugs.freedesktop.org/enter_bug.cgi?product=xorg])
AM_INIT_AUTOMAKE([foreign dist-bzip2])
AM_MAINTAINER_MODE
# Require xorg-macros: XORG_CHANGELOG
m4_ifndef([XORG_MACROS_VERSION], [AC_FATAL([must install xorg-macros 1.2 or later before running autoconf/autogen])])
XORG_MACROS_VERSION(1.2)
XORG_RELEASE_VERSION
XORG_CHANGELOG
# Require xorg-macros minimum of 1.10 for DocBook XML documentation
m4_ifndef([XORG_MACROS_VERSION],
[m4_fatal([must install xorg-macros 1.10 or later before running autoconf/autogen])])
XORG_MACROS_VERSION(1.10)
XORG_DEFAULT_OPTIONS
XORG_ENABLE_SPECS
XORG_WITH_XMLTO(0.0.20)
XORG_WITH_FOP
XORG_CHECK_SGML_DOCTOOLS(1.5)
AC_OUTPUT([Makefile
specs/Makefile
bigreqsproto.pc])

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@ -0,0 +1,64 @@
#
# Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice (including the next
# paragraph) shall be included in all copies or substantial portions of the
# Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.
#
if ENABLE_SPECS
doc_sources = bigreq.xml
dist_doc_DATA = $(doc_sources)
if HAVE_XMLTO
doc_DATA = $(doc_sources:.xml=.html)
if HAVE_FOP
doc_DATA += $(doc_sources:.xml=.ps) $(doc_sources:.xml=.pdf)
endif
if HAVE_XMLTO_TEXT
doc_DATA += $(doc_sources:.xml=.txt)
endif
if HAVE_STYLESHEETS
XMLTO_FLAGS = -m $(XSL_STYLESHEET)
doc_DATA += xorg.css
xorg.css: $(STYLESHEET_SRCDIR)/xorg.css
$(AM_V_GEN)cp -pf $(STYLESHEET_SRCDIR)/xorg.css $@
endif
CLEANFILES = $(doc_DATA)
SUFFIXES = .xml .ps .pdf .txt .html
.xml.txt:
$(AM_V_GEN)$(XMLTO) $(XMLTO_FLAGS) txt $<
.xml.html:
$(AM_V_GEN)$(XMLTO) $(XMLTO_FLAGS) xhtml-nochunks $<
.xml.pdf:
$(AM_V_GEN)$(XMLTO) $(XMLTO_FLAGS) --with-fop pdf $<
.xml.ps:
$(AM_V_GEN)$(XMLTO) $(XMLTO_FLAGS) --with-fop ps $<
endif HAVE_XMLTO
endif ENABLE_SPECS

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<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd">
<!-- lifted from troff+ms+XMan by doclifter -->
<book id="bigreqms">
<bookinfo>
<title>Big Requests Extension</title>
<subtitle>X Consortium Standard</subtitle>
<releaseinfo>X Version 11, Release 6.4</releaseinfo>
<authorgroup>
<author>
<firstname>Bob</firstname><surname>Scheifler</surname>
</author>
</authorgroup>
<corpname>X Consortium Standard</corpname>
<copyright><year>1993</year><year>1994</year>
<holder>X Consortium</holder></copyright>
<releaseinfo>Version 2.0</releaseinfo>
<affiliation><orgname>X Consortium</orgname></affiliation>
<productnumber>X Version 11, Release 7</productnumber>
<legalnotice>
<para>Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the &ldquo;Software&rdquo;), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:</para>
<para>The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.</para>
<para>THE SOFTWARE IS PROVIDED &ldquo;AS IS&rdquo;, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.</para>
<para>Except as contained in this notice, the name of the X Consortium shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization from the X Consortium.</para>
<para>X Window System is a trademark of The Open Group.</para>
</legalnotice>
</bookinfo>
<chapter id='overview'>
<title>Overview</title>
<para>This extension enables the use of protocol requests that exceed 262140 bytes in length.</para>
<para>The core protocol restricts the maximum length of a protocol request to 262140 bytes, in that it uses a 16-bit length field specifying the number of 4-byte units in the request. This is a problem in the core protocol when joining large numbers of lines (<symbol role='Pn'>PolyLine</symbol>) or arcs (<symbol role='Pn'>PolyArc</symbol>), since these requests cannot be broken up into smaller requests without disturbing the rendering of the join points. It is also much more of a problem for protocol extensions, such as the PEX extension for 3D graphics and the XIE extension for imaging, that need to send long data lists in output commands.</para>
<para>This extension defines a mechanism for extending the length field beyond 16 bits. If the normal 16-bit length field of the protocol request is zero, then an additional 32-bit field containing the actual length (in 4-byte units) is inserted into the request, immediately following the 16-bit length field.</para>
<para>For example, a normal <function>PolyLine</function> encoding is:</para>
<informaltable pgwide='0' frame='none'>
<tgroup cols='4' align='left'>
<colspec colwidth='0.5in' colname='c1'/>
<colspec colwidth='1.5in' colname='c2'/>
<colspec colwidth='1.5in' colname='c3'/>
<colspec colwidth='2.0in' colname='c4'/>
<thead>
<row>
<entry namest="c1" nameend="c4"><function>PolyLine</function></entry>
</row>
</thead>
<tbody>
<row>
<entry>1</entry>
<entry>65</entry>
<entry></entry>
<entry>opcode</entry>
</row>
<row>
<entry>1</entry>
<entry></entry>
<entry></entry>
<entry>coordinate-mode</entry>
</row>
<row>
<entry></entry>
<entry>0</entry>
<entry>Origin</entry>
<entry></entry>
</row>
<row>
<entry></entry>
<entry>1</entry>
<entry>Previous</entry>
<entry></entry>
</row>
<row>
<entry>2</entry>
<entry>3+n</entry>
<entry></entry>
<entry></entry>
</row>
<row>
<entry>4</entry>
<entry>DRAWABLE</entry>
<entry></entry>
<entry>drawable</entry>
</row>
<row>
<entry>4</entry>
<entry>GCONTEXT</entry>
<entry></entry>
<entry>gc</entry>
</row>
<row>
<entry>4n</entry>
<entry>LISTofPOINT</entry>
<entry></entry>
<entry>points</entry>
</row>
</tbody>
</tgroup>
</informaltable>
<para>An extended-length <function>PolyLine</function> encoding is:</para>
<informaltable pgwide='0' frame='none'>
<tgroup cols='4' align='left'>
<colspec colwidth='0.5in' colname='c1'/>
<colspec colwidth='1.5in' colname='c2'/>
<colspec colwidth='1.5in' colname='c3'/>
<colspec colwidth='2.0in' colname='c4'/>
<thead>
<row>
<entry namest="c1" nameend="c4"><function>PolyLine</function></entry>
</row>
</thead>
<tbody>
<row>
<entry>1</entry>
<entry>65</entry>
<entry></entry>
<entry>opcode</entry>
</row>
<row>
<entry>1</entry>
<entry></entry>
<entry></entry>
<entry>coordinate-mode</entry>
</row>
<row>
<entry></entry>
<entry>0</entry>
<entry>Origin</entry>
<entry></entry>
</row>
<row>
<entry></entry>
<entry>1</entry>
<entry>Previous</entry>
<entry></entry>
</row>
<row>
<entry>2</entry>
<entry>0</entry>
<entry></entry>
<entry>extended length flag</entry>
</row>
<row>
<entry>4</entry>
<entry>4+n</entry>
<entry></entry>
<entry>request length</entry>
</row>
<row>
<entry>4</entry>
<entry>DRAWABLE</entry>
<entry></entry>
<entry>drawable</entry>
</row>
<row>
<entry>4</entry>
<entry>GCONTEXT</entry>
<entry></entry>
<entry>gc</entry>
</row>
<row>
<entry>4n</entry>
<entry>LISTofPOINT</entry>
<entry></entry>
<entry>points</entry>
</row>
</tbody>
</tgroup>
</informaltable>
<para>Extended-length protocol encodings, once enabled, can be used on all protocol requests, including all extensions.</para>
</chapter>
<chapter id='requests'>
<title>Requests</title>
<para><function>BigReqEnable</function></para>
<para> =&gt;</para>
<para><emphasis remap='I'>maximum-request-length</emphasis>: CARD32</para>
<para>This request enables extended-length protocol requests for the requesting client. It also returns the maximum length of a request, in 4-byte units, that can be used in extended-length protocol requests. This value will always be greater than the maximum-request-length returned in the connection setup information.</para>
</chapter>
<chapter id='events_and_errors'>
<title>Events and Errors</title>
<para>No new events or errors are defined by this extension.</para>
</chapter>
<chapter id='encoding'>
<title>Encoding</title>
<para>Please refer to the X11 Protocol Encoding document as this document uses conventions established there.</para>
<para>The name of this extension is &ldquo;BIG-REQUESTS&rdquo;.</para>
<informaltable pgwide='0' frame='none'>
<tgroup cols='3' align='left'>
<colspec colwidth='0.5in' colname='c1'/>
<colspec colwidth='0.5in' colname='c2'/>
<colspec colwidth='2.0in' colname='c3'/>
<thead>
<row>
<entry namest="c1" nameend="c3">BigReqEnable</entry>
</row>
</thead>
<tbody>
<row>
<entry>1</entry>
<entry>Card8</entry>
<entry>opcode</entry>
</row>
<row>
<entry>1</entry>
<entry>0</entry>
<entry>bigreq opcode</entry>
</row>
<row>
<entry>2</entry>
<entry>1</entry>
<entry>request length</entry>
</row>
</tbody>
</tgroup>
<tgroup cols='3' align='left'>
<colspec colwidth='0.5in' colname='c1'/>
<colspec colwidth='1.5in' colname='c2'/>
<colspec colwidth='2.0in' colname='c3'/>
<thead>
<row>
<entry namest="c1" nameend="c3">=&gt;</entry>
</row>
</thead>
<tbody>
<row>
<entry>1</entry>
<entry>1</entry>
<entry>Reply</entry>
</row>
<row>
<entry>1</entry>
<entry></entry>
<entry>unused</entry>
</row>
<row>
<entry>2</entry>
<entry>CARD16</entry>
<entry>sequence number</entry>
</row>
<row>
<entry>4</entry>
<entry>0</entry>
<entry>length</entry>
</row>
<row>
<entry>4</entry>
<entry>CARD32</entry>
<entry>maximum-request-length</entry>
</row>
<row>
<entry>2</entry>
<entry>0</entry>
<entry>unused</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</chapter>
<chapter id='c_language_binding'>
<title>C language binding</title>
<para>It is desirable for core Xlib, and other extensions, to use this extension internally when necessary. It is also desirable to make the use of this extension as transparent as possible to the X client. For example, if enabling of the extension were delayed until the first time it was needed, an application that used <function>XNextRequest</function> to determine the sequence number of a request would no longer get the correct sequence number. As such, <function>XOpenDisplay</function> will determine if the extension is supported by the server and, if it is, enable extended-length encodings.</para>
<para>The core Xlib functions <function>XDrawLines</function>, <function>XDrawArcs</function>, <function>XFillPolygon</function>, <function>XChangeProperty</function>, <function>XSetClipRectangles</function>, and <function>XSetRegion</function> are required to use extended-length encodings when necessary, if supported by the server. Use of extended-length encodings in other core Xlib functions (<function>XDrawPoints</function>, <function>XDrawRectangles</function>, <function>XDrawSegments</function>. <function>XFillArcs</function>, <function>XFillRectangles</function>, <function>XPutImage</function> is permitted but not required; an Xlib implementation may choose to split the data across multiple smaller requests instead.</para>
<para>To permit clients to know what the maximum-request-length for extended-length encodings is, the following function is added to Xlib:
<funcsynopsis>
<funcprototype>
<funcdef>long <function>XExtendedMaxRequestSize</function></funcdef>
<paramdef>Display <parameter> *display</parameter></paramdef>
</funcprototype>
</funcsynopsis>
Returns zero (0) if the specified display does not support this extension, otherwise returns the maximum-request-length (in 4-byte units) supported by the server through the extended-length encoding.</para>
</chapter>
<chapter id='acknowledgements'>
<title>Acknowledgements</title>
<para>Clive Feather (IXI) originated the extended-length encoding used in this extension proposal.</para>
</chapter>
</book>