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Adding upstream version 0.1.

Signed-off-by: Daniel Baumann <daniel@debian.org>
This commit is contained in:
Daniel Baumann 2025-02-24 03:22:05 +01:00
parent 5c5a9ef8b0
commit 63d771d1a1
Signed by: daniel
GPG key ID: FBB4F0E80A80222F
21 changed files with 4890 additions and 0 deletions

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Plzip was written by Laszlo Ersek and Antonio Diaz Diaz.
Plzip uses a simplified version of the LZMA algorithm.
The original LZMA algorithm was designed by Igor Pavlov.

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may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

21
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2009-12-05 Antonio Diaz Diaz <ant_diaz@teleline.es>
* Version 0.1 released.
* This version is based on llzip-0.03 (2009-11-21), written by
Laszlo Ersek <lacos@caesar.elte.hu>.
From llzip-0.03/README:
llzip is a hack on my lbzip2-0.17 release. I ripped out the
decompression stuff, and replaced the bzip2 compression with
the lzma compression from lzlib-0.7. llzip is mainly meant
as an assisted fork point for the lzip developers.
Nonetheless, I tried to review the diff against lbzip2-0.17
thoroughly, and I think llzip should be usable on its own
until something better appears on the net.
Copyright (C) 2009 Antonio Diaz Diaz.
This file is a collection of facts, and thus it is not copyrightable,
but just in case, I give you unlimited permission to copy, distribute
and modify it.

57
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Requirements
------------
You will need a C++ compiler and the lzlib compression library installed.
I use gcc 4.3.4 and 3.3.6, but the code should compile with any
standards compliant compiler.
Gcc is available at http://gcc.gnu.org.
Lzlib is available at http://www.nongnu.org/lzip/lzlib.html.
Procedure
---------
1. Unpack the archive if you have not done so already:
lzip -cd plzip[version].tar.lz | tar -xf -
or
gzip -cd plzip[version].tar.gz | tar -xf -
This creates the directory ./plzip[version] containing the source from
the main archive.
2. Change to plzip directory and run configure.
(Try `configure --help' for usage instructions).
cd plzip[version]
./configure
3. Run make.
make
4. Optionally, type `make check' to run the tests that come with plzip.
5. Type `make install' to install the program and any data files and
documentation.
Another way
-----------
You can also compile plzip into a separate directory. To do this, you
must use a version of `make' that supports the `VPATH' variable, such
as GNU `make'. `cd' to the directory where you want the object files
and executables to go and run the `configure' script. `configure'
automatically checks for the source code in `.', in `..' and in the
directory that `configure' is in.
`configure' recognizes the option `--srcdir=DIR' to control where to
look for the sources. Usually `configure' can determine that directory
automatically.
After running `configure', you can run `make' and `make install' as
explained above.
Copyright (C) 2009 Antonio Diaz Diaz.
This file is free documentation: you have unlimited permission to copy,
distribute and modify it.

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DISTNAME = $(progname)-$(progversion)
INSTALL = install
INSTALL_PROGRAM = $(INSTALL) -p -m 755
INSTALL_DATA = $(INSTALL) -p -m 644
INSTALL_DIR = $(INSTALL) -d -m 755
LIBS = -llz -lpthread
SHELL = /bin/sh
objs = arg_parser.o lacos_rbtree.o plzip.o main.o
.PHONY : all install install-info install-man install-strip \
uninstall uninstall-info uninstall-man \
doc info man check dist clean distclean
all : $(progname)
$(progname) : $(objs)
$(CXX) $(LDFLAGS) -o $(progname) $(objs) $(LIBS)
$(progname)_profiled : $(objs)
$(CXX) $(LDFLAGS) -pg -o $(progname)_profiled $(objs) $(LIBS)
main.o : main.cc
$(CXX) $(CPPFLAGS) $(CXXFLAGS) -DPROGVERSION=\"$(progversion)\" -c -o $@ $<
%.o : %.cc
$(CXX) $(CPPFLAGS) $(CXXFLAGS) -c -o $@ $<
$(objs) : Makefile
arg_parser.o : arg_parser.h
lacos_rbtree.o: lacos_rbtree.h
main.o : arg_parser.h main.h plzip.h
plzip.o : lacos_rbtree.h main.h plzip.h
doc : info man
info : $(VPATH)/doc/$(progname).info
$(VPATH)/doc/$(progname).info : $(VPATH)/doc/$(progname).texinfo
cd $(VPATH)/doc && makeinfo $(progname).texinfo
man : $(VPATH)/doc/$(progname).1
$(VPATH)/doc/$(progname).1 : $(progname)
help2man -n 'data compressor based on the LZMA algorithm' \
-o $(VPATH)/doc/$(progname).1 ./$(progname)
Makefile : $(VPATH)/configure $(VPATH)/Makefile.in
./config.status
check : all $(VPATH)/testsuite/check.sh
@$(VPATH)/testsuite/check.sh $(VPATH)/testsuite
install : all install-info install-man
if test ! -d $(DESTDIR)$(bindir) ; then $(INSTALL_DIR) $(DESTDIR)$(bindir) ; fi
$(INSTALL_PROGRAM) ./$(progname) $(DESTDIR)$(bindir)/$(progname)
install-info :
if test ! -d $(DESTDIR)$(infodir) ; then $(INSTALL_DIR) $(DESTDIR)$(infodir) ; fi
$(INSTALL_DATA) $(VPATH)/doc/$(progname).info $(DESTDIR)$(infodir)/$(progname).info
-install-info --info-dir=$(DESTDIR)$(infodir) $(DESTDIR)$(infodir)/$(progname).info
install-man :
if test ! -d $(DESTDIR)$(mandir)/man1 ; then $(INSTALL_DIR) $(DESTDIR)$(mandir)/man1 ; fi
$(INSTALL_DATA) $(VPATH)/doc/$(progname).1 $(DESTDIR)$(mandir)/man1/$(progname).1
install-strip : all
$(MAKE) INSTALL_PROGRAM='$(INSTALL_PROGRAM) -s' install
uninstall : uninstall-info uninstall-man
-rm -f $(DESTDIR)$(bindir)/$(progname)
uninstall-info :
-install-info --info-dir=$(DESTDIR)$(infodir) --remove $(DESTDIR)$(infodir)/$(progname).info
-rm -f $(DESTDIR)$(infodir)/$(progname).info
uninstall-man :
-rm -f $(DESTDIR)$(mandir)/man1/$(progname).1
dist :
ln -sf $(VPATH) $(DISTNAME)
tar -cvf $(DISTNAME).tar \
$(DISTNAME)/AUTHORS \
$(DISTNAME)/COPYING \
$(DISTNAME)/ChangeLog \
$(DISTNAME)/INSTALL \
$(DISTNAME)/Makefile.in \
$(DISTNAME)/NEWS \
$(DISTNAME)/README \
$(DISTNAME)/configure \
$(DISTNAME)/doc/$(progname).1 \
$(DISTNAME)/doc/$(progname).info \
$(DISTNAME)/doc/$(progname).texinfo \
$(DISTNAME)/testsuite/COPYING.lz \
$(DISTNAME)/testsuite/check.sh \
$(DISTNAME)/*.h \
$(DISTNAME)/*.cc
rm -f $(DISTNAME)
lzip -v -9 $(DISTNAME).tar
clean :
-rm -f $(progname) $(progname)_profiled $(objs)
distclean : clean
-rm -f Makefile config.status *.tar *.tar.lz

3
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Changes in version 0.1:
Initial release.

21
README Normal file
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Description
Plzip is a parallel version of the lzip data compressor. Currently only
compression is performed in parallel. Parallel decompression is planned
to be implemented soon.
Lzip is a lossless data compressor based on the LZMA algorithm, with
very safe integrity checking and a user interface similar to the one of
gzip or bzip2. Lzip decompresses almost as fast as gzip and compresses
better than bzip2, which makes it well suited for software distribution
and data archiving.
Copyright (C) 2009 Antonio Diaz Diaz.
This file is free documentation: you have unlimited permission to copy,
distribute and modify it.
The file Makefile.in is a data file used by configure to produce the
Makefile. It has the same copyright owner and permissions that this
file.

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/* Arg_parser - A POSIX/GNU command line argument parser.
Copyright (C) 2006, 2007, 2008, 2009 Antonio Diaz Diaz.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <cstring>
#include <string>
#include <vector>
#include "arg_parser.h"
bool Arg_parser::parse_long_option( const char * const opt, const char * const arg,
const Option options[], int & argind )
{
unsigned int len;
int index = -1;
bool exact = false, ambig = false;
for( len = 0; opt[len+2] && opt[len+2] != '='; ++len ) ;
// Test all long options for either exact match or abbreviated matches.
for( int i = 0; options[i].code != 0; ++i )
if( options[i].name && !std::strncmp( options[i].name, &opt[2], len ) )
{
if( std::strlen( options[i].name ) == len ) // Exact match found
{ index = i; exact = true; break; }
else if( index < 0 ) index = i; // First nonexact match found
else if( options[index].code != options[i].code ||
options[index].has_arg != options[i].has_arg )
ambig = true; // Second or later nonexact match found
}
if( ambig && !exact )
{
error_ = "option `"; error_ += opt; error_ += "' is ambiguous";
return false;
}
if( index < 0 ) // nothing found
{
error_ = "unrecognized option `"; error_ += opt; error_ += '\'';
return false;
}
++argind;
data.push_back( Record( options[index].code ) );
if( opt[len+2] ) // `--<long_option>=<argument>' syntax
{
if( options[index].has_arg == no )
{
error_ = "option `--"; error_ += options[index].name;
error_ += "' doesn't allow an argument";
return false;
}
if( options[index].has_arg == yes && !opt[len+3] )
{
error_ = "option `--"; error_ += options[index].name;
error_ += "' requires an argument";
return false;
}
data.back().argument = &opt[len+3];
return true;
}
if( options[index].has_arg == yes )
{
if( !arg || !arg[0] )
{
error_ = "option `--"; error_ += options[index].name;
error_ += "' requires an argument";
return false;
}
++argind; data.back().argument = arg;
return true;
}
return true;
}
bool Arg_parser::parse_short_option( const char * const opt, const char * const arg,
const Option options[], int & argind )
{
int cind = 1; // character index in opt
while( cind > 0 )
{
int index = -1;
const unsigned char c = opt[cind];
if( c != 0 )
for( int i = 0; options[i].code; ++i )
if( c == options[i].code )
{ index = i; break; }
if( index < 0 )
{
error_ = "invalid option -- "; error_ += c;
return false;
}
data.push_back( Record( c ) );
if( opt[++cind] == 0 ) { ++argind; cind = 0; } // opt finished
if( options[index].has_arg != no && cind > 0 && opt[cind] )
{
data.back().argument = &opt[cind]; ++argind; cind = 0;
}
else if( options[index].has_arg == yes )
{
if( !arg || !arg[0] )
{
error_ = "option requires an argument -- "; error_ += c;
return false;
}
data.back().argument = arg; ++argind; cind = 0;
}
}
return true;
}
Arg_parser::Arg_parser( const int argc, const char * const argv[],
const Option options[], const bool in_order )
{
if( argc < 2 || !argv || !options ) return;
std::vector< std::string > non_options; // skipped non-options
int argind = 1; // index in argv
while( argind < argc )
{
const unsigned char ch1 = argv[argind][0];
const unsigned char ch2 = ( ch1 ? argv[argind][1] : 0 );
if( ch1 == '-' && ch2 ) // we found an option
{
const char * const opt = argv[argind];
const char * const arg = (argind + 1 < argc) ? argv[argind+1] : 0;
if( ch2 == '-' )
{
if( !argv[argind][2] ) { ++argind; break; } // we found "--"
else if( !parse_long_option( opt, arg, options, argind ) ) break;
}
else if( !parse_short_option( opt, arg, options, argind ) ) break;
}
else
{
if( !in_order ) non_options.push_back( argv[argind++] );
else { data.push_back( Record() ); data.back().argument = argv[argind++]; }
}
}
if( error_.size() ) data.clear();
else
{
for( unsigned int i = 0; i < non_options.size(); ++i )
{ data.push_back( Record() ); data.back().argument.swap( non_options[i] ); }
while( argind < argc )
{ data.push_back( Record() ); data.back().argument = argv[argind++]; }
}
}
Arg_parser::Arg_parser( const char * const opt, const char * const arg,
const Option options[] )
{
if( !opt || !opt[0] || !options ) return;
if( opt[0] == '-' && opt[1] ) // we found an option
{
int argind = 1; // dummy
if( opt[1] == '-' )
{ if( opt[2] ) parse_long_option( opt, arg, options, argind ); }
else
parse_short_option( opt, arg, options, argind );
if( error_.size() ) data.clear();
}
else { data.push_back( Record() ); data.back().argument = opt; }
}

95
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/* Arg_parser - A POSIX/GNU command line argument parser.
Copyright (C) 2006, 2007, 2008, 2009 Antonio Diaz Diaz.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/* Arg_parser reads the arguments in `argv' and creates a number of
option codes, option arguments and non-option arguments.
In case of error, `error' returns a non-empty error message.
`options' is an array of `struct Option' terminated by an element
containing a code which is zero. A null name means a short-only
option. A code value outside the unsigned char range means a
long-only option.
Arg_parser normally makes it appear as if all the option arguments
were specified before all the non-option arguments for the purposes
of parsing, even if the user of your program intermixed option and
non-option arguments. If you want the arguments in the exact order
the user typed them, call `Arg_parser' with `in_order' = true.
The argument `--' terminates all options; any following arguments are
treated as non-option arguments, even if they begin with a hyphen.
The syntax for optional option arguments is `-<short_option><argument>'
(without whitespace), or `--<long_option>=<argument>'.
*/
class Arg_parser
{
public:
enum Has_arg { no, yes, maybe };
struct Option
{
int code; // Short option letter or code ( code != 0 )
const char * name; // Long option name (maybe null)
Has_arg has_arg;
};
private:
struct Record
{
int code;
std::string argument;
Record( const int c = 0 ) : code( c ) {}
};
std::string error_;
std::vector< Record > data;
bool parse_long_option( const char * const opt, const char * const arg,
const Option options[], int & argind );
bool parse_short_option( const char * const opt, const char * const arg,
const Option options[], int & argind );
public:
Arg_parser( const int argc, const char * const argv[],
const Option options[], const bool in_order = false );
// Restricted constructor. Parses a single token and argument (if any)
Arg_parser( const char * const opt, const char * const arg,
const Option options[] );
const std::string & error() const throw() { return error_; }
// The number of arguments parsed (may be different from argc)
int arguments() const throw() { return data.size(); }
// If code( i ) is 0, argument( i ) is a non-option.
// Else argument( i ) is the option's argument (or empty).
int code( const int i ) const throw()
{
if( i >= 0 && i < arguments() ) return data[i].code;
else return 0;
}
const std::string & argument( const int i ) const throw()
{
if( i >= 0 && i < arguments() ) return data[i].argument;
else return error_;
}
};

213
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#! /bin/sh
# configure script for Plzip - A parallel version of the lzip data compressor
# Copyright (C) 2009 Antonio Diaz Diaz.
#
# This configure script is free software: you have unlimited permission
# to copy, distribute and modify it.
#
# Date of this version: 2009-09-05
args=
no_create=
progname=plzip
progversion=0.1
srctrigger=plzip.h
# clear some things potentially inherited from environment.
LC_ALL=C
export LC_ALL
srcdir=
prefix=/usr/local
exec_prefix='$(prefix)'
bindir='$(exec_prefix)/bin'
datadir='$(prefix)/share'
infodir='$(datadir)/info'
mandir='$(datadir)/man'
sysconfdir='$(prefix)/etc'
CC=
CXX=
CPPFLAGS=
CFLAGS='-Wall -W -O2'
CXXFLAGS='-Wall -W -O2'
LDFLAGS=
# Loop over all args
while [ x"$1" != x ] ; do
# Get the first arg, and shuffle
option=$1
shift
# Add the argument quoted to args
args="${args} \"${option}\""
# Split out the argument for options that take them
case ${option} in
*=*) optarg=`echo ${option} | sed -e 's,^[^=]*=,,'` ;;
esac
# Process the options
case ${option} in
--help | --he* | -h)
echo "Usage: configure [options]"
echo
echo "Options: [defaults in brackets]"
echo " -h, --help display this help and exit"
echo " -V, --version output version information and exit"
echo " --srcdir=DIR find the sources in DIR [. or ..]"
echo " --prefix=DIR install into DIR [${prefix}]"
echo " --exec-prefix=DIR base directory for arch-dependent files [${exec_prefix}]"
echo " --bindir=DIR user executables directory [${bindir}]"
echo " --datadir=DIR base directory for doc and data [${datadir}]"
echo " --infodir=DIR info files directory [${infodir}]"
echo " --mandir=DIR man pages directory [${mandir}]"
echo " --sysconfdir=DIR read-only single-machine data directory [${sysconfdir}]"
echo " CC=COMPILER C compiler to use [gcc]"
echo " CXX=COMPILER C++ compiler to use [g++]"
echo " CPPFLAGS=OPTIONS command line options for the preprocessor [${CPPFLAGS}]"
echo " CFLAGS=OPTIONS command line options for the C compiler [${CFLAGS}]"
echo " CXXFLAGS=OPTIONS command line options for the C++ compiler [${CXXFLAGS}]"
echo " LDFLAGS=OPTIONS command line options for the linker [${LDFLAGS}]"
echo
exit 0 ;;
--version | --ve* | -V)
echo "Configure script for ${progname} version ${progversion}"
exit 0 ;;
--srcdir* | --sr*)
srcdir=`echo ${optarg} | sed -e 's,/$,,'` ;;
--prefix* | --pr*)
prefix=`echo ${optarg} | sed -e 's,/$,,'` ;;
--exec-prefix* | --ex*)
exec_prefix=`echo ${optarg} | sed -e 's,/$,,'` ;;
--bindir* | --bi*)
bindir=`echo ${optarg} | sed -e 's,/$,,'` ;;
--datadir* | --da*)
datadir=`echo ${optarg} | sed -e 's,/$,,'` ;;
--infodir* | --in*)
infodir=`echo ${optarg} | sed -e 's,/$,,'` ;;
--mandir* | --ma*)
mandir=`echo ${optarg} | sed -e 's,/$,,'` ;;
--sysconfdir* | --sy*)
sysconfdir=`echo ${optarg} | sed -e 's,/$,,'` ;;
--no-create | --no-c*)
no_create=yes ;;
CC=*) CC=${optarg} ;;
CXX=*) CXX=${optarg} ;;
CPPFLAGS=*) CPPFLAGS=${optarg} ;;
CFLAGS=*) CFLAGS=${optarg} ;;
CXXFLAGS=*) CXXFLAGS=${optarg} ;;
LDFLAGS=*) LDFLAGS=${optarg} ;;
--* | *=* | *-*-*) ;;
*)
echo "configure: Unrecognized option: \"${option}\"; use --help for usage." 1>&2
exit 1 ;;
esac
done
# Find the source files, if location was not specified.
srcdirtext=
if [ x"${srcdir}" = x ] ; then
srcdirtext="or . or .." ; srcdir=.
if [ ! -r ${srcdir}/${srctrigger} ] ; then srcdir=.. ; fi
if [ ! -r ${srcdir}/${srctrigger} ] ; then
## the sed command below emulates the dirname command
srcdir=`echo $0 | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'`
fi
fi
if [ ! -r ${srcdir}/${srctrigger} ] ; then
exec 1>&2
echo
echo "configure: Can't find sources in ${srcdir} ${srcdirtext}"
echo "configure: (At least ${srctrigger} is missing)."
exit 1
fi
# Set srcdir to . if that's what it is.
if [ "`pwd`" = "`cd ${srcdir} ; pwd`" ] ; then srcdir=. ; fi
# checking whether we are using GNU C.
if [ x"${CC}" = x ] ; then # Let the user override the test.
if [ -x /bin/gcc ] ||
[ -x /usr/bin/gcc ] ||
[ -x /usr/local/bin/gcc ] ; then
CC="gcc"
else
CC="cc"
fi
fi
# checking whether we are using GNU C++.
if [ x"${CXX}" = x ] ; then # Let the user override the test.
if [ -x /bin/g++ ] ||
[ -x /usr/bin/g++ ] ||
[ -x /usr/local/bin/g++ ] ; then
CXX="g++"
else
CXX="c++"
fi
fi
echo
if [ x${no_create} = x ] ; then
echo "creating config.status"
rm -f config.status
cat > config.status << EOF
#! /bin/sh
# This file was generated automatically by configure. Do not edit.
# Run this file to recreate the current configuration.
#
# This script is free software: you have unlimited permission
# to copy, distribute and modify it.
exec /bin/sh $0 ${args} --no-create
EOF
chmod +x config.status
fi
echo "creating Makefile"
echo "VPATH = ${srcdir}"
echo "prefix = ${prefix}"
echo "exec_prefix = ${exec_prefix}"
echo "bindir = ${bindir}"
echo "datadir = ${datadir}"
echo "infodir = ${infodir}"
echo "mandir = ${mandir}"
echo "sysconfdir = ${sysconfdir}"
echo "CC = ${CC}"
echo "CXX = ${CXX}"
echo "CPPFLAGS = ${CPPFLAGS}"
echo "CFLAGS = ${CFLAGS}"
echo "CXXFLAGS = ${CXXFLAGS}"
echo "LDFLAGS = ${LDFLAGS}"
rm -f Makefile
cat > Makefile << EOF
# Makefile for Plzip - A parallel version of the lzip data compressor
# Copyright (C) 2009 Antonio Diaz Diaz.
# This file was generated automatically by configure. Do not edit.
#
# This Makefile is free software: you have unlimited permission
# to copy, distribute and modify it.
progname = ${progname}
progversion = ${progversion}
VPATH = ${srcdir}
prefix = ${prefix}
exec_prefix = ${exec_prefix}
bindir = ${bindir}
datadir = ${datadir}
infodir = ${infodir}
mandir = ${mandir}
sysconfdir = ${sysconfdir}
CC = ${CC}
CXX = ${CXX}
CPPFLAGS = ${CPPFLAGS}
CFLAGS = ${CFLAGS}
CXXFLAGS = ${CXXFLAGS}
LDFLAGS = ${LDFLAGS}
EOF
cat ${srcdir}/Makefile.in >> Makefile
echo "OK. Now you can run make."

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.\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.36.
.TH PLZIP "1" "December 2009" "Plzip 0.1" "User Commands"
.SH NAME
Plzip \- data compressor based on the LZMA algorithm
.SH SYNOPSIS
.B plzip
[\fIoptions\fR] [\fIfiles\fR]
.SH DESCRIPTION
Plzip \- A parallel version of the lzip data compressor.
.SH OPTIONS
.TP
\fB\-h\fR, \fB\-\-help\fR
display this help and exit
.TP
\fB\-V\fR, \fB\-\-version\fR
output version information and exit
.TP
\fB\-c\fR, \fB\-\-stdout\fR
send output to standard output
.TP
\fB\-d\fR, \fB\-\-decompress\fR
decompress
.TP
\fB\-n\fR, \fB\-\-threads=\fR<n>
set the number of (de)compression threads
.TP
\fB\-q\fR, \fB\-\-quiet\fR
suppress all messages
.TP
\fB\-t\fR, \fB\-\-test\fR
test compressed file integrity
.TP
\fB\-v\fR, \fB\-\-verbose\fR
be verbose (a 2nd \fB\-v\fR gives more)
.TP
\fB\-1\fR .. \fB\-9\fR
set compression level [default 6]
.TP
\fB\-\-fast\fR
alias for \fB\-1\fR
.TP
\fB\-\-best\fR
alias for \fB\-9\fR
.PP
If no file names are given, plzip compresses or decompresses
from standard input to standard output.
Numbers may be followed by a multiplier: k = kB = 10^3 = 1000,
Ki = KiB = 2^10 = 1024, M = 10^6, Mi = 2^20, G = 10^9, Gi = 2^30, etc...
.SH "REPORTING BUGS"
Report bugs to lzip\-bug@nongnu.org
Lzip home page: http://www.nongnu.org/lzip/lzip.html
.SH COPYRIGHT
Copyright \(co 2009 Laszlo Ersek.
.br
Copyright \(co 2009 Antonio Diaz Diaz.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
.br
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
.SH "SEE ALSO"
The full documentation for
.B Plzip
is maintained as a Texinfo manual. If the
.B info
and
.B Plzip
programs are properly installed at your site, the command
.IP
.B info Plzip
.PP
should give you access to the complete manual.

303
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@ -0,0 +1,303 @@
This is plzip.info, produced by makeinfo version 4.13 from
plzip.texinfo.
INFO-DIR-SECTION Data Compression
START-INFO-DIR-ENTRY
* Plzip: (plzip). Parallel version of the lzip data compressor
END-INFO-DIR-ENTRY

File: plzip.info, Node: Top, Next: Introduction, Up: (dir)
Plzip Manual
************
This manual is for Plzip (version 0.1, 5 December 2009).
* Menu:
* Introduction:: Purpose and features of plzip
* Invoking Plzip:: Command line interface
* File Format:: Detailed format of the compressed file
* Problems:: Reporting bugs
* Concept Index:: Index of concepts
Copyright (C) 2008, 2009 Antonio Diaz Diaz.
This manual is free documentation: you have unlimited permission to
copy, distribute and modify it.

File: plzip.info, Node: Introduction, Next: Invoking Plzip, Prev: Top, Up: Top
1 Introduction
**************
Plzip is a parallel version of the lzip data compressor. Currently only
compression is performed in parallel. Parallel decompression is planned
to be implemented soon.
Lzip is a lossless data compressor based on the LZMA algorithm, with
very safe integrity checking and a user interface similar to the one of
gzip or bzip2. Lzip decompresses almost as fast as gzip and compresses
better than bzip2, which makes it well suited for software distribution
and data archiving.
Plzip replaces every file given in the command line with a compressed
version of itself, with the name "original_name.lz". Each compressed
file has the same modification date, permissions, and, when possible,
ownership as the corresponding original, so that these properties can be
correctly restored at decompression time. Plzip is able to read from
some types of non regular files if the `--stdout' option is specified.
If no file names are specified, plzip compresses (or decompresses)
from standard input to standard output. In this case, plzip will
decline to write compressed output to a terminal, as this would be
entirely incomprehensible and therefore pointless.
Plzip will correctly decompress a file which is the concatenation of
two or more compressed files. The result is the concatenation of the
corresponding uncompressed files. Integrity testing of concatenated
compressed files is also supported.
When decompressing, plzip attempts to guess the name for the
decompressed file from that of the compressed file as follows:
filename.lz becomes filename
filename.tlz becomes filename.tar
anyothername becomes anyothername.out
As a self-check for your protection, plzip stores in the member
trailer the 32-bit CRC of the original data and the size of the
original data, to make sure that the decompressed version of the data
is identical to the original. This guards against corruption of the
compressed data, and against undetected bugs in plzip (hopefully very
unlikely). The chances of data corruption going undetected are
microscopic, less than one chance in 4000 million for each member
processed. Be aware, though, that the check occurs upon decompression,
so it can only tell you that something is wrong. It can't help you
recover the original uncompressed data.
Return values: 0 for a normal exit, 1 for environmental problems
(file not found, invalid flags, I/O errors, etc), 2 to indicate a
corrupt or invalid input file, 3 for an internal consistency error (eg,
bug) which caused plzip to panic.

File: plzip.info, Node: Invoking Plzip, Next: File Format, Prev: Introduction, Up: Top
2 Invoking Plzip
****************
The format for running plzip is:
plzip [OPTIONS] [FILES]
Plzip supports the following options:
`--help'
`-h'
Print an informative help message describing the options and exit.
`--version'
`-V'
Print the version number of plzip on the standard output and exit.
`--stdout'
`-c'
Compress or decompress to standard output. Needed when reading
from a named pipe (fifo) or from a device.
`--decompress'
`-d'
Decompress.
`--force'
`-f'
Force overwrite of output file.
`--keep'
`-k'
Keep (don't delete) input files during compression or
decompression.
`--match-length=LENGTH'
`-m LENGTH'
Set the match length limit in bytes. Valid values range from 5 to
273. Larger values usually give better compression ratios but
longer compression times.
`--output=FILE'
`-o FILE'
When reading from standard input and `--stdout' has not been
specified, use `FILE' as the virtual name of the uncompressed
file. This produces a file named `FILE' when decompressing, and a
file named `FILE.lz' when compressing.
`--quiet'
`-q'
Quiet operation. Suppress all messages.
`--dictionary-size=SIZE'
`-s SIZE'
Set the dictionary size limit in bytes. Valid values range from
4KiB to 512MiB. Note that dictionary sizes are quantized. If the
specified size does not match one of the valid sizes, it will be
rounded upwards.
`--test'
`-t'
Check integrity of the specified file(s), but don't decompress
them. This really performs a trial decompression and throws away
the result. Use `-tvv' or `-tvvv' to see information about the
file.
`--verbose'
`-v'
Verbose mode. Show the compression ratio for each file processed.
Further -v's increase the verbosity level.
`-1 .. -9'
Set the compression parameters (dictionary size and match length
limit) as shown in the table below. Note that `-9' can be much
slower than `-1'. These options have no effect when decompressing.
Level Dictionary size Match length limit
-1 1MiB 10 bytes
-2 1MiB 12 bytes
-3 1MiB 17 bytes
-4 2MiB 26 bytes
-5 4MiB 44 bytes
-6 8MiB 80 bytes
-7 16MiB 108 bytes
-8 16MiB 163 bytes
-9 32MiB 273 bytes
`--fast'
`--best'
Aliases for GNU gzip compatibility.
Numbers given as arguments to options may be followed by a multiplier
and an optional `B' for "byte".
Table of SI and binary prefixes (unit multipliers):
Prefix Value | Prefix Value
k kilobyte (10^3 = 1000) | Ki kibibyte (2^10 = 1024)
M megabyte (10^6) | Mi mebibyte (2^20)
G gigabyte (10^9) | Gi gibibyte (2^30)
T terabyte (10^12) | Ti tebibyte (2^40)
P petabyte (10^15) | Pi pebibyte (2^50)
E exabyte (10^18) | Ei exbibyte (2^60)
Z zettabyte (10^21) | Zi zebibyte (2^70)
Y yottabyte (10^24) | Yi yobibyte (2^80)

File: plzip.info, Node: File Format, Next: Problems, Prev: Invoking Plzip, Up: Top
3 File Format
*************
In the diagram below, a box like this:
+---+
| | <-- the vertical bars might be missing
+---+
represents one byte; a box like this:
+==============+
| |
+==============+
represents a variable number of bytes.
A lzip file consists of a series of "members" (compressed data sets).
The members simply appear one after another in the file, with no
additional information before, between, or after them.
Each member has the following structure:
+--+--+--+--+----+----+=============+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ID string | VN | DS | Lzma stream | CRC32 | Data size | Member size |
+--+--+--+--+----+----+=============+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
All multibyte values are stored in little endian order.
`ID string'
A four byte string, identifying the member type, with the value
"LZIP".
`VN (version number, 1 byte)'
Just in case something needs to be modified in the future. Valid
values are 0 and 1. Version 0 files have only one member and lack
`Member size'.
`DS (coded dictionary size, 1 byte)'
Bits 4-0 contain the base 2 logarithm of the base dictionary size.
Bits 7-5 contain the number of "wedges" to substract from the base
dictionary size to obtain the dictionary size. The size of a wedge
is (base dictionary size / 16).
Valid values for dictionary size range from 4KiB to 512MiB.
`Lzma stream'
The lzma stream, finished by an end of stream marker. Uses default
values for encoder properties.
`CRC32 (4 bytes)'
CRC of the uncompressed original data.
`Data size (8 bytes)'
Size of the uncompressed original data.
`Member size (8 bytes)'
Total size of the member, including header and trailer. This
facilitates safe recovery of undamaged members from multimember
files.

File: plzip.info, Node: Problems, Next: Concept Index, Prev: File Format, Up: Top
4 Reporting Bugs
****************
There are probably bugs in plzip. There are certainly errors and
omissions in this manual. If you report them, they will get fixed. If
you don't, no one will ever know about them and they will remain unfixed
for all eternity, if not longer.
If you find a bug in plzip, please send electronic mail to
<lzip-bug@nongnu.org>. Include the version number, which you can find
by running `plzip --version'.

File: plzip.info, Node: Concept Index, Prev: Problems, Up: Top
Concept Index
*************
[index]
* Menu:
* bugs: Problems. (line 6)
* file format: File Format. (line 6)
* getting help: Problems. (line 6)
* introduction: Introduction. (line 6)
* invoking: Invoking Plzip. (line 6)
* options: Invoking Plzip. (line 6)
* usage: Invoking Plzip. (line 6)
* version: Invoking Plzip. (line 6)

Tag Table:
Node: Top227
Node: Introduction750
Node: Invoking Plzip3401
Node: File Format6746
Node: Problems8702
Node: Concept Index9231

End Tag Table

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@ -0,0 +1,311 @@
\input texinfo @c -*-texinfo-*-
@c %**start of header
@setfilename plzip.info
@settitle Plzip Manual
@finalout
@c %**end of header
@set UPDATED 5 December 2009
@set VERSION 0.1
@dircategory Data Compression
@direntry
* Plzip: (plzip). Parallel version of the lzip data compressor
@end direntry
@titlepage
@title Plzip
@subtitle A data compressor based on the LZMA algorithm
@subtitle for Plzip version @value{VERSION}, @value{UPDATED}
@author by Antonio Diaz Diaz
@page
@vskip 0pt plus 1filll
@end titlepage
@contents
@node Top
@top
This manual is for Plzip (version @value{VERSION}, @value{UPDATED}).
@menu
* Introduction:: Purpose and features of plzip
* Invoking Plzip:: Command line interface
* File Format:: Detailed format of the compressed file
* Problems:: Reporting bugs
* Concept Index:: Index of concepts
@end menu
@sp 1
Copyright @copyright{} 2008, 2009 Antonio Diaz Diaz.
This manual is free documentation: you have unlimited permission
to copy, distribute and modify it.
@node Introduction
@chapter Introduction
@cindex introduction
Plzip is a parallel version of the lzip data compressor. Currently only
compression is performed in parallel. Parallel decompression is planned
to be implemented soon.
Lzip is a lossless data compressor based on the LZMA algorithm, with
very safe integrity checking and a user interface similar to the one of
gzip or bzip2. Lzip decompresses almost as fast as gzip and compresses
better than bzip2, which makes it well suited for software distribution
and data archiving.
Plzip replaces every file given in the command line with a compressed
version of itself, with the name "original_name.lz". Each compressed
file has the same modification date, permissions, and, when possible,
ownership as the corresponding original, so that these properties can be
correctly restored at decompression time. Plzip is able to read from some
types of non regular files if the @samp{--stdout} option is specified.
If no file names are specified, plzip compresses (or decompresses) from
standard input to standard output. In this case, plzip will decline to
write compressed output to a terminal, as this would be entirely
incomprehensible and therefore pointless.
Plzip will correctly decompress a file which is the concatenation of two
or more compressed files. The result is the concatenation of the
corresponding uncompressed files. Integrity testing of concatenated
compressed files is also supported.
When decompressing, plzip attempts to guess the name for the decompressed
file from that of the compressed file as follows:
@multitable {anyothername} {becomes} {anyothername.out}
@item filename.lz @tab becomes @tab filename
@item filename.tlz @tab becomes @tab filename.tar
@item anyothername @tab becomes @tab anyothername.out
@end multitable
As a self-check for your protection, plzip stores in the member trailer
the 32-bit CRC of the original data and the size of the original data,
to make sure that the decompressed version of the data is identical to
the original. This guards against corruption of the compressed data, and
against undetected bugs in plzip (hopefully very unlikely). The chances
of data corruption going undetected are microscopic, less than one
chance in 4000 million for each member processed. Be aware, though, that
the check occurs upon decompression, so it can only tell you that
something is wrong. It can't help you recover the original uncompressed
data.
Return values: 0 for a normal exit, 1 for environmental problems (file
not found, invalid flags, I/O errors, etc), 2 to indicate a corrupt or
invalid input file, 3 for an internal consistency error (eg, bug) which
caused plzip to panic.
@node Invoking Plzip
@chapter Invoking Plzip
@cindex invoking
@cindex options
@cindex usage
@cindex version
The format for running plzip is:
@example
plzip [@var{options}] [@var{files}]
@end example
Plzip supports the following options:
@table @samp
@item --help
@itemx -h
Print an informative help message describing the options and exit.
@item --version
@itemx -V
Print the version number of plzip on the standard output and exit.
@item --stdout
@itemx -c
Compress or decompress to standard output. Needed when reading from a
named pipe (fifo) or from a device.
@item --decompress
@itemx -d
Decompress.
@item --force
@itemx -f
Force overwrite of output file.
@item --keep
@itemx -k
Keep (don't delete) input files during compression or decompression.
@item --match-length=@var{length}
@itemx -m @var{length}
Set the match length limit in bytes. Valid values range from 5 to 273.
Larger values usually give better compression ratios but longer
compression times.
@item --output=@var{file}
@itemx -o @var{file}
When reading from standard input and @samp{--stdout} has not been
specified, use @samp{@var{file}} as the virtual name of the uncompressed
file. This produces a file named @samp{@var{file}} when decompressing,
and a file named @samp{@var{file}.lz} when compressing.
@item --quiet
@itemx -q
Quiet operation. Suppress all messages.
@item --dictionary-size=@var{size}
@itemx -s @var{size}
Set the dictionary size limit in bytes. Valid values range from 4KiB to
512MiB. Note that dictionary sizes are quantized. If the specified size
does not match one of the valid sizes, it will be rounded upwards.
@item --test
@itemx -t
Check integrity of the specified file(s), but don't decompress them.
This really performs a trial decompression and throws away the result.
Use @samp{-tvv} or @samp{-tvvv} to see information about the file.
@item --verbose
@itemx -v
Verbose mode. Show the compression ratio for each file processed.
Further -v's increase the verbosity level.
@item -1 .. -9
Set the compression parameters (dictionary size and match length limit)
as shown in the table below. Note that @samp{-9} can be much slower than
@samp{-1}. These options have no effect when decompressing.
@multitable {Level} {Dictionary size} {Match length limit}
@item Level @tab Dictionary size @tab Match length limit
@item -1 @tab 1MiB @tab 10 bytes
@item -2 @tab 1MiB @tab 12 bytes
@item -3 @tab 1MiB @tab 17 bytes
@item -4 @tab 2MiB @tab 26 bytes
@item -5 @tab 4MiB @tab 44 bytes
@item -6 @tab 8MiB @tab 80 bytes
@item -7 @tab 16MiB @tab 108 bytes
@item -8 @tab 16MiB @tab 163 bytes
@item -9 @tab 32MiB @tab 273 bytes
@end multitable
@item --fast
@itemx --best
Aliases for GNU gzip compatibility.
@end table
@sp 1
Numbers given as arguments to options may be followed by a multiplier
and an optional @samp{B} for "byte".
Table of SI and binary prefixes (unit multipliers):
@multitable {Prefix} {kilobyte (10^3 = 1000)} {|} {Prefix} {kibibyte (2^10 = 1024)}
@item Prefix @tab Value @tab | @tab Prefix @tab Value
@item k @tab kilobyte (10^3 = 1000) @tab | @tab Ki @tab kibibyte (2^10 = 1024)
@item M @tab megabyte (10^6) @tab | @tab Mi @tab mebibyte (2^20)
@item G @tab gigabyte (10^9) @tab | @tab Gi @tab gibibyte (2^30)
@item T @tab terabyte (10^12) @tab | @tab Ti @tab tebibyte (2^40)
@item P @tab petabyte (10^15) @tab | @tab Pi @tab pebibyte (2^50)
@item E @tab exabyte (10^18) @tab | @tab Ei @tab exbibyte (2^60)
@item Z @tab zettabyte (10^21) @tab | @tab Zi @tab zebibyte (2^70)
@item Y @tab yottabyte (10^24) @tab | @tab Yi @tab yobibyte (2^80)
@end multitable
@node File Format
@chapter File Format
@cindex file format
In the diagram below, a box like this:
@verbatim
+---+
| | <-- the vertical bars might be missing
+---+
@end verbatim
represents one byte; a box like this:
@verbatim
+==============+
| |
+==============+
@end verbatim
represents a variable number of bytes.
@sp 1
A lzip file consists of a series of "members" (compressed data sets).
The members simply appear one after another in the file, with no
additional information before, between, or after them.
Each member has the following structure:
@verbatim
+--+--+--+--+----+----+=============+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ID string | VN | DS | Lzma stream | CRC32 | Data size | Member size |
+--+--+--+--+----+----+=============+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
@end verbatim
All multibyte values are stored in little endian order.
@table @samp
@item ID string
A four byte string, identifying the member type, with the value "LZIP".
@item VN (version number, 1 byte)
Just in case something needs to be modified in the future. Valid values
are 0 and 1. Version 0 files have only one member and lack @samp{Member
size}.
@item DS (coded dictionary size, 1 byte)
Bits 4-0 contain the base 2 logarithm of the base dictionary size.@*
Bits 7-5 contain the number of "wedges" to substract from the base
dictionary size to obtain the dictionary size. The size of a wedge is
(base dictionary size / 16).@*
Valid values for dictionary size range from 4KiB to 512MiB.
@item Lzma stream
The lzma stream, finished by an end of stream marker. Uses default values
for encoder properties.
@item CRC32 (4 bytes)
CRC of the uncompressed original data.
@item Data size (8 bytes)
Size of the uncompressed original data.
@item Member size (8 bytes)
Total size of the member, including header and trailer. This facilitates
safe recovery of undamaged members from multimember files.
@end table
@node Problems
@chapter Reporting Bugs
@cindex bugs
@cindex getting help
There are probably bugs in plzip. There are certainly errors and
omissions in this manual. If you report them, they will get fixed. If
you don't, no one will ever know about them and they will remain unfixed
for all eternity, if not longer.
If you find a bug in plzip, please send electronic mail to
@email{lzip-bug@@nongnu.org}. Include the version number, which you can
find by running @w{@samp{plzip --version}}.
@node Concept Index
@unnumbered Concept Index
@printindex cp
@bye

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/* Plzip - A parallel version of the lzip data compressor
Copyright (C) 2009 Laszlo Ersek.
Copyright (C) 2009 Antonio Diaz Diaz.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define _FILE_OFFSET_BITS 64
#include <cstddef>
#include "lacos_rbtree.h"
enum lacos_rbtree_color {
LACOS_RBTREE_RED,
LACOS_RBTREE_BLACK
};
struct lacos_rbtree_node {
void *data;
lacos_rbtree_node *parent,
*left,
*right;
lacos_rbtree_color color;
};
lacos_rbtree_node *
lacos_rbtree_find( lacos_rbtree_node *root, const void *key,
int (*cmp)(const void *cmp_key, const void *cmp_data))
{
int cmp_res;
while (root && (cmp_res = (*cmp)(key, root->data)))
root = cmp_res < 0 ? root->left : root->right;
return root;
}
lacos_rbtree_node *
lacos_rbtree_min( lacos_rbtree_node *root)
{
lacos_rbtree_node *tmp;
if (!root)
return 0;
while ((tmp = root->left))
root = tmp;
return root;
}
lacos_rbtree_node *
lacos_rbtree_max( lacos_rbtree_node *root)
{
lacos_rbtree_node *tmp;
if (!root)
return 0;
while ((tmp = root->right))
root = tmp;
return root;
}
lacos_rbtree_node *
lacos_rbtree_next( lacos_rbtree_node *current)
{
lacos_rbtree_node *tmp;
if (!current)
return 0;
if ((tmp = current->right)) {
while ((current = tmp->left))
tmp = current;
return tmp;
}
while ((tmp = current->parent) && current == tmp->right)
current = tmp;
return tmp;
}
lacos_rbtree_node *
lacos_rbtree_prev( lacos_rbtree_node *current)
{
lacos_rbtree_node *tmp;
if (!current)
return 0;
if ((tmp = current->left)) {
while ((current = tmp->right))
tmp = current;
return tmp;
}
while ((tmp = current->parent) && current == tmp->left)
current = tmp;
return tmp;
}
static void
lacos_rbtree_rotate_left( lacos_rbtree_node **new_root,
lacos_rbtree_node *rotation_root)
{
lacos_rbtree_node
*parent = rotation_root->parent,
*rc = rotation_root->right,
*rlc = rc->left;
rotation_root->right = rlc;
if (rlc)
rlc->parent = rotation_root;
rc->parent = parent;
if (parent)
if (rotation_root == parent->left)
parent->left = rc;
else
parent->right = rc;
else
*new_root = rc;
rc->left = rotation_root;
rotation_root->parent = rc;
}
static void
lacos_rbtree_rotate_right( lacos_rbtree_node **new_root,
lacos_rbtree_node *rotation_root)
{
lacos_rbtree_node
*parent = rotation_root->parent,
*lc = rotation_root->left,
*lrc = lc->right;
rotation_root->left = lrc;
if (lrc)
lrc->parent = rotation_root;
lc->parent = parent;
if (parent)
if (rotation_root == parent->left)
parent->left = lc;
else
parent->right = lc;
else
*new_root = lc;
lc->right = rotation_root;
rotation_root->parent = lc;
}
int
lacos_rbtree_insert( lacos_rbtree_node **new_root,
lacos_rbtree_node **new_node, void *new_data,
int (*cmp)(const void *cmp_new_data, const void *cmp_data),
void *(*alloc)(size_t size, void *alloc_ctl), void *alloc_ctl)
{
int cmp_res = 0;
lacos_rbtree_node *tmp = *new_root, *parent = 0;
while (tmp && (cmp_res = (*cmp)(new_data, tmp->data))) {
parent = tmp;
tmp = cmp_res < 0 ? tmp->left : tmp->right;
}
if (tmp) {
*new_node = tmp;
return -1;
}
if (!(*new_node = tmp = (lacos_rbtree_node *)(*alloc)(sizeof(lacos_rbtree_node),
alloc_ctl)))
return -1;
tmp->data = new_data;
tmp->parent = parent;
tmp->left = 0;
tmp->right = 0;
if (parent)
if (cmp_res < 0)
parent->left = tmp;
else
parent->right = tmp;
else {
*new_root = tmp;
tmp->color = LACOS_RBTREE_BLACK;
return 0;
}
{
lacos_rbtree_node *root = *new_root, *grandparent, *uncle;
tmp->color = LACOS_RBTREE_RED;
while (tmp != root && LACOS_RBTREE_RED == parent->color) {
grandparent = parent->parent;
if (parent == grandparent->left) {
uncle = grandparent->right;
if (uncle && LACOS_RBTREE_RED == uncle->color) {
parent->color = LACOS_RBTREE_BLACK;
uncle->color = LACOS_RBTREE_BLACK;
grandparent->color = LACOS_RBTREE_RED;
tmp = grandparent;
parent = tmp->parent;
}
else {
if (tmp == parent->right) {
tmp = parent;
lacos_rbtree_rotate_left(&root, tmp);
parent = tmp->parent;
grandparent = parent->parent;
}
parent->color = LACOS_RBTREE_BLACK;
grandparent->color = LACOS_RBTREE_RED;
lacos_rbtree_rotate_right(&root, grandparent);
}
}
else {
uncle = grandparent->left;
if (uncle && LACOS_RBTREE_RED == uncle->color) {
parent->color = LACOS_RBTREE_BLACK;
uncle->color = LACOS_RBTREE_BLACK;
grandparent->color = LACOS_RBTREE_RED;
tmp = grandparent;
parent = tmp->parent;
}
else {
if (tmp == parent->left) {
tmp = parent;
lacos_rbtree_rotate_right(&root, tmp);
parent = tmp->parent;
grandparent = parent->parent;
}
parent->color = LACOS_RBTREE_BLACK;
grandparent->color = LACOS_RBTREE_RED;
lacos_rbtree_rotate_left(&root, grandparent);
}
}
}
root->color = LACOS_RBTREE_BLACK;
*new_root = root;
}
return 0;
}
void
lacos_rbtree_delete( lacos_rbtree_node **new_root,
lacos_rbtree_node *old_node, void **old_data,
void (*dealloc)(void *ptr, void *alloc_ctl), void *alloc_ctl)
{
lacos_rbtree_node *child, *parent, *root = *new_root,
*old_node_left = old_node->left,
*old_node_right = old_node->right,
*old_node_parent = old_node->parent;
lacos_rbtree_color color_of_firstly_unlinked;
if (old_data)
*old_data = old_node->data;
if (old_node_left && old_node_right) {
lacos_rbtree_node
*to_relink = old_node_right,
*tmp = to_relink->left;
if (tmp) {
do {
to_relink = tmp;
tmp = tmp->left;
} while (tmp);
parent = to_relink->parent;
child = to_relink->right;
parent->left = child;
if (child)
child->parent = parent;
to_relink->right = old_node_right;
old_node_right->parent = to_relink;
}
else {
parent = old_node_right;
child = old_node_right->right;
}
to_relink->left = old_node_left;
old_node_left->parent = to_relink;
color_of_firstly_unlinked = to_relink->color;
to_relink->color = old_node->color;
to_relink->parent = old_node_parent;
if (old_node_parent)
if (old_node == old_node_parent->left)
old_node_parent->left = to_relink;
else
old_node_parent->right = to_relink;
else
root = to_relink;
}
else {
parent = old_node_parent;
child = old_node_left ? old_node_left : old_node_right;
color_of_firstly_unlinked = old_node->color;
if (child)
child->parent = parent;
if (old_node_parent)
if (old_node == old_node_parent->left)
old_node_parent->left = child;
else
old_node_parent->right = child;
else
root = child;
}
(*dealloc)(old_node, alloc_ctl);
if (LACOS_RBTREE_BLACK == color_of_firstly_unlinked) {
lacos_rbtree_node *brother, *left_nephew, *right_nephew;
int left_black, right_black;
while (child != root && (!child || LACOS_RBTREE_BLACK == child->color))
if (child == parent->left) {
brother = parent->right;
if (LACOS_RBTREE_RED == brother->color) {
brother->color = LACOS_RBTREE_BLACK;
parent->color = LACOS_RBTREE_RED;
lacos_rbtree_rotate_left(&root, parent);
brother = parent->right;
}
left_nephew = brother->left;
right_nephew = brother->right;
right_black = !right_nephew
|| LACOS_RBTREE_BLACK == right_nephew->color;
if ((!left_nephew || LACOS_RBTREE_BLACK == left_nephew->color)
&& right_black) {
brother->color = LACOS_RBTREE_RED;
child = parent;
parent = parent->parent;
}
else {
if (right_black) {
left_nephew->color = LACOS_RBTREE_BLACK;
brother->color = LACOS_RBTREE_RED;
lacos_rbtree_rotate_right(&root, brother);
brother = parent->right;
right_nephew = brother->right;
}
brother->color = parent->color;
parent->color = LACOS_RBTREE_BLACK;
right_nephew->color = LACOS_RBTREE_BLACK;
lacos_rbtree_rotate_left(&root, parent);
child = root;
break;
}
}
else {
brother = parent->left;
if (LACOS_RBTREE_RED == brother->color) {
brother->color = LACOS_RBTREE_BLACK;
parent->color = LACOS_RBTREE_RED;
lacos_rbtree_rotate_right(&root, parent);
brother = parent->left;
}
right_nephew = brother->right;
left_nephew = brother->left;
left_black = !left_nephew || LACOS_RBTREE_BLACK == left_nephew->color;
if ((!right_nephew || LACOS_RBTREE_BLACK == right_nephew->color)
&& left_black) {
brother->color = LACOS_RBTREE_RED;
child = parent;
parent = parent->parent;
}
else {
if (left_black) {
right_nephew->color = LACOS_RBTREE_BLACK;
brother->color = LACOS_RBTREE_RED;
lacos_rbtree_rotate_left(&root, brother);
brother = parent->left;
left_nephew = brother->left;
}
brother->color = parent->color;
parent->color = LACOS_RBTREE_BLACK;
left_nephew->color = LACOS_RBTREE_BLACK;
lacos_rbtree_rotate_right(&root, parent);
child = root;
break;
}
}
if (child)
child->color = LACOS_RBTREE_BLACK;
}
*new_root = root;
}

249
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/* Plzip - A parallel version of the lzip data compressor
Copyright (C) 2009 Laszlo Ersek.
Copyright (C) 2009 Antonio Diaz Diaz.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef __cplusplus
extern "C" {
#endif
struct lacos_rbtree_node;
/*
Opaque data type for red-black binary tree nodes. To get its data pointer,
cast a (struct lacos_rbtree_node *) object to (void **) and derefer it once.
Empty trees equal to (struct lacos_rbtree_node *)0.
This group of functions is generally not thread-safe (although it doesn't use
any static data), because the non-read-only operations must exclude all
operations on the same tree via external locking in a multi-threaded
environment.
If you want to alter the (your own) "key" field in an element, you mustn't do
that in one step. It must involve one delete and one insert operation, in the
order of your choice. Delete-insert is probably faster than insert-delete.
*/
/*
The functions below all return and mainly take pointers to nodes, not
elements (pointers to void). However, for simplicity of language, they are
described as if they operated on pointers to void (elements).
*/
lacos_rbtree_node *
lacos_rbtree_find( lacos_rbtree_node *root, const void *key,
int (*cmp)(const void *cmp_key, const void *cmp_data));
/*
USAGE:
Find an element in the tree.
ARGUMENTS:
root:
Root of the tree.
key:
This specifies which element should be found. This doesn't need to be an
element, it can be a standalone key too, if you write the "cmp" function
accordingly.
cmp:
A function which should return an integer less than, equal to, or greater
than zero if the "key" argument compares less than, equal to, or greater
than the currently inspected element in the tree.
RETURN VALUE:
If the key is found, this function returns the element (actually the
address of the containing node). If it is not found, 0 is returned.
READ-ONLY OPERATION:
Yes.
*/
lacos_rbtree_node *
lacos_rbtree_min( lacos_rbtree_node *root);
/*
USAGE:
Get the smallest element in the tree.
ARGUMENTS:
root:
Root of the tree.
RETURN VALUE:
If the tree is empty ("root" is null), 0 is returned. Otherwise, the
smallest element is returned.
READ-ONLY OPERATION:
Yes.
*/
lacos_rbtree_node *
lacos_rbtree_max( lacos_rbtree_node *root);
/*
USAGE:
Get the greatest element in the tree.
ARGUMENTS:
root:
Root of the tree.
RETURN VALUE:
If the tree is empty ("root" is null), 0 is returned. Otherwise, the
greatest element is returned.
READ-ONLY OPERATION:
Yes.
*/
lacos_rbtree_node *
lacos_rbtree_next( lacos_rbtree_node *current);
/*
USAGE:
Get the smallest element greater than "current".
ARGUMENTS:
current:
An element.
RETURN VALUE:
If "current" is null or the last element in the tree, 0 is returned.
Otherwise, the smallest element greater than "current" is returned.
READ-ONLY OPERATION:
Yes.
*/
lacos_rbtree_node *
lacos_rbtree_prev( lacos_rbtree_node *current);
/*
USAGE:
Get the greatest element smaller than "current".
ARGUMENTS:
current:
An element.
RETURN VALUE:
If "current" is null or the first element in the tree, 0 is returned.
Otherwise, the greatest element smaller than "current" is returned.
READ-ONLY OPERATION:
Yes.
*/
int
lacos_rbtree_insert( lacos_rbtree_node **new_root,
lacos_rbtree_node **new_node, void *new_data,
int (*cmp)(const void *cmp_new_data, const void *cmp_data),
void *(*alloc)(size_t size, void *alloc_ctl), void *alloc_ctl);
/*
USAGE:
Insert an element into the tree.
ARGUMENTS:
new_root:
Address of the tree's root; "*new_root" is the root of the tree. Both
input and output.
new_node:
Output only.
new_data:
The data to insert. This must not be a standalone key, this must be a
full element. It will only be linked in, not copied.
cmp:
A function which should return an integer less than, equal to, or greater
than zero if the "new_data" argument compares less than, equal to, or
greater than the currently inspected element in the tree.
alloc:
A memory allocator function whose externally observable behavior is
consistent with that of "malloc". It must work together with the
"dealloc" function passed to "lacos_rbtree_delete".
alloc_ctl:
A pointer to a custom data type to supply the "alloc" function with
optional auxiliary control information (arena etc).
RETURN VALUE:
If the insertion succeeds, 0 is returned, the new element is stored into
"*new_node", and "*new_root" is updated to the new root of the tree.
Otherwise, "*new_root" is not modified, and -1 is returned because of one
of the following errors:
- An element with a colliding key was found in the tree. In this case, the
colliding element is stored into "*new_node".
- There was not enough memory to allocate a new node object. In this case,
0 is stored into "*new_node".
Existing node pointers remain valid in any case.
READ-ONLY OPERATION:
No.
*/
void
lacos_rbtree_delete( lacos_rbtree_node **new_root,
lacos_rbtree_node *old_node, void **old_data,
void (*dealloc)(void *ptr, void *alloc_ctl), void *alloc_ctl);
/*
USAGE:
Remove an element from the tree.
ARGUMENTS:
new_root:
Address of the tree's root; "*new_root" is the root of the tree. Both
input and output.
old_node:
The element to remove. This must be a valid node pointer into the tree.
old_data:
The deleted element (the data of the deleted node, which was specified by
the "new_data" argument of the corresponding "lacos_rbtree_insert" call).
You could get the data also through "*(void **)old_node" before calling
this function. The data pointer of the node to delete is only accessed
and stored into "*old_data" if "old_data" is not 0.
dealloc:
A memory deallocator function whose externally observable behavior is
consistent with that of "free". It must work together with the "alloc"
function passed to "lacos_rbtree_insert".
alloc_ctl:
A pointer to a custom data type to supply the "dealloc" function with
optional auxiliary control information (arena etc).
Existing node pointers different from "old_node" remain valid.
READ-ONLY OPERATION:
No.
*/
#ifdef __cplusplus
}
#endif

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/* Plzip - A parallel version of the lzip data compressor
Copyright (C) 2009 Laszlo Ersek.
Copyright (C) 2009 Antonio Diaz Diaz.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
void show_error( const char * msg, const int errcode = 0, const bool help = false ) throw();
extern void *(*mallocf)(size_t size);
extern void (*freef)(void *ptr);
struct Cond
{
pthread_mutex_t lock; /* Lock this to protect shared resource. */
pthread_cond_t cond; /* Trigger this if predicate becomes true. */
long unsigned ccount, /* Increment this when checking predicate. */
wcount; /* Increment this when waiting is necessary. */
};
/* Terminate the process with EXIT_FAILURE. */
void
fatal(void);
/* Format operation and append resolved error, then call fatal(). */
void
fail(const char *fmt, int err, ...)
#ifdef __GNUC__
__attribute__((format(printf, 1, 3)))
#endif
;
/* If these primitives fail, they call fail(), which in turn calls fatal(). */
void *
xalloc(size_t size);
void
xinit(Cond *cond);
void
xdestroy(Cond *cond);
void
xlock(Cond *cond);
void
xlock_pred(Cond *cond);
void
xunlock(Cond *cond);
void
xwait(Cond *cond);
void
xsignal(Cond *cond);
void
xbroadcast(Cond *cond);
void
xcreate(pthread_t *thread, void *(*routine)(void *), void *arg);
void
xjoin(pthread_t thread);
void
xraise(int sig);

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/* Plzip - A parallel version of the lzip data compressor
Copyright (C) 2009 Laszlo Ersek.
Copyright (C) 2009 Antonio Diaz Diaz.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define _FILE_OFFSET_BITS 64
#include <cassert>
#include <cerrno>
#include <climits>
#include <csignal>
#include <cstdio>
#include <cstdlib>
#include <stdint.h>
#include <unistd.h>
#include <lzlib.h>
#include "main.h"
#include "plzip.h"
#include "lacos_rbtree.h"
struct S2w_blk /* Splitter to workers. */
{
uint64_t id; /* Block serial number as read from infd. */
S2w_blk *next; /* Next in queue. */
size_t loaded; /* # of bytes in plain, may be 0 for 1st. */
char unsigned plain[1]; /* Data read from infd, allocated: sizeof_plain. */
};
struct S2w_q
{
Cond av_or_eof; /* New block available or splitter done. */
S2w_blk *tail, /* Splitter will append here. */
*head; /* Next ready worker shall compress this. */
int eof; /* Splitter done. */
};
static void
s2w_q_init(S2w_q *s2w_q)
{
xinit(&s2w_q->av_or_eof);
s2w_q->tail = 0;
s2w_q->head = 0;
s2w_q->eof = 0;
}
static void
s2w_q_uninit(S2w_q *s2w_q)
{
assert(0 != s2w_q->eof);
assert(0 == s2w_q->head);
assert(0 == s2w_q->tail);
xdestroy(&s2w_q->av_or_eof);
}
struct W2m_blk /* Workers to muxer. */
{
uint64_t id; /* Block index as read from infd. */
W2m_blk *next; /* Next block in list (unordered). */
size_t produced; /* Number of bytes in compr. */
char unsigned compr[1]; /* Data to write to outfd, alloc.: sizeof_compr. */
};
static int
w2m_blk_cmp(const void *v_a, const void *v_b)
{
uint64_t a,
b;
a = ((const W2m_blk *)v_a)->id;
b = ((const W2m_blk *)v_b)->id;
return
a < b ? -1
: a > b ? 1
: 0;
}
struct W2m_q
{
Cond av_or_exit; /* New block available or all workers exited. */
uint64_t needed; /* Block needed for resuming writing. */
W2m_blk *head; /* Block list (unordered). */
unsigned working; /* Number of workers still running. */
};
static void
w2m_q_init(W2m_q *w2m_q, unsigned num_worker)
{
assert(0u < num_worker);
xinit(&w2m_q->av_or_exit);
w2m_q->needed = 0u;
w2m_q->head = 0;
w2m_q->working = num_worker;
}
static void
w2m_q_uninit(W2m_q *w2m_q)
{
assert(0u == w2m_q->working);
assert(0 == w2m_q->head);
xdestroy(&w2m_q->av_or_exit);
}
struct M2s_q /* Muxer to splitter. */
{
Cond av; /* Free slot available. */
unsigned num_free; /* Number of free slots. */
};
static void
m2s_q_init(M2s_q *m2s_q, unsigned num_free)
{
assert(0u < num_free);
xinit(&m2s_q->av);
m2s_q->num_free = num_free;
}
static void
m2s_q_uninit(M2s_q *m2s_q, unsigned num_free)
{
assert(m2s_q->num_free == num_free);
xdestroy(&m2s_q->av);
}
static void
split(M2s_q *m2s_q, S2w_q *s2w_q, int infd,
const size_t sizeof_plain, const size_t sizeof_s2w_blk)
{
uint64_t id;
ssize_t rd;
id = 0u;
do {
S2w_blk *s2w_blk;
size_t vacant;
/* Grab a free slot. */
xlock_pred(&m2s_q->av);
while (0u == m2s_q->num_free) {
xwait(&m2s_q->av);
}
--m2s_q->num_free;
xunlock(&m2s_q->av);
s2w_blk = (S2w_blk *)xalloc(sizeof_s2w_blk);
/* Fill block. */
vacant = sizeof_plain;
do {
rd = read(infd, s2w_blk->plain + (sizeof_plain - vacant),
vacant > (size_t)SSIZE_MAX ? (size_t)SSIZE_MAX : vacant);
} while (0 < rd && 0u < (vacant -= (size_t)rd));
/* Read error. */
if (-1 == rd) {
fail("read()", errno);
}
if (sizeof_plain == vacant && 0u < id) {
/* EOF on first read, but not for first input block. */
(*freef)(s2w_blk);
xlock(&m2s_q->av);
++m2s_q->num_free;
xunlock(&m2s_q->av);
}
else {
s2w_blk->id = id;
s2w_blk->next = 0;
s2w_blk->loaded = sizeof_plain - vacant;
}
/* We either push a block, or set EOF, or both. */
assert(sizeof_plain > vacant || 0 == rd);
xlock(&s2w_q->av_or_eof);
if (0 == s2w_q->head) {
xbroadcast(&s2w_q->av_or_eof);
}
if (sizeof_plain > vacant || 0u == id) {
if (0 == s2w_q->tail) {
s2w_q->head = s2w_blk;
}
else {
s2w_q->tail->next = s2w_blk;
}
s2w_q->tail = s2w_blk;
}
s2w_q->eof = (0 == rd);
xunlock(&s2w_q->av_or_eof);
/*
If we didn't push a block, then this is bogus, but then we did set EOF,
so it doesn't matter, because we'll leave immediately.
*/
++id;
} while (0 < rd);
}
struct Split_arg
{
M2s_q *m2s_q;
S2w_q *s2w_q;
int infd;
size_t sizeof_plain,
sizeof_S2w_blk;
};
static void *
split_wrap(void *v_split_arg)
{
Split_arg *split_arg = (Split_arg *)v_split_arg;
split(
split_arg->m2s_q,
split_arg->s2w_q,
split_arg->infd,
split_arg->sizeof_plain,
split_arg->sizeof_S2w_blk
);
return 0;
}
static void
work_lz_rd(W2m_blk *w2m_blk, const size_t sizeof_compr, void *lz)
{
int rd;
assert(w2m_blk->produced < sizeof_compr);
rd = LZ_compress_read(lz, w2m_blk->compr + w2m_blk->produced,
sizeof_compr - w2m_blk->produced);
if (-1 == rd) {
show_error( "LZ_compress_read() failed." );
fatal();
}
w2m_blk->produced += (size_t)rd;
}
struct Compr_lev
{
unsigned dict_size,
mx_match;
};
static const Compr_lev compr_lev[] = {
{ 1u * 1024u * 1024u, 10u },
{ 1u * 1024u * 1024u, 12u },
{ 1u * 1024u * 1024u, 17u },
{ 2u * 1024u * 1024u, 26u },
{ 4u * 1024u * 1024u, 44u },
{ 8u * 1024u * 1024u, 80u },
{ 16u * 1024u * 1024u, 108u },
{ 16u * 1024u * 1024u, 163u },
{ 32u * 1024u * 1024u, 273u }
};
static void
work_compr(S2w_blk *s2w_blk, W2m_q *w2m_q, unsigned clidx,
const size_t sizeof_compr, const size_t sizeof_w2m_blk)
{
W2m_blk *w2m_blk;
assert(0u < s2w_blk->loaded || 0u == s2w_blk->id);
w2m_blk = (W2m_blk *)xalloc(sizeof_w2m_blk);
/* Single member compression. Settings like with lzip -6. */
{
void *lz;
size_t written;
lz = LZ_compress_open(compr_lev[clidx].dict_size,
compr_lev[clidx].mx_match, (uint64_t)-1 / 2u);
if (LZ_ok != LZ_compress_errno(lz)) {
show_error( "LZ_compress_open() failed." );
fatal();
}
written = 0u;
w2m_blk->produced = 0u;
while (written < s2w_blk->loaded) {
int wr;
wr = LZ_compress_write(lz, s2w_blk->plain + written,
s2w_blk->loaded - written);
if (-1 == wr) {
show_error( "LZ_compress_write() failed." );
fatal();
}
written += (size_t)wr;
work_lz_rd(w2m_blk, sizeof_compr, lz);
}
if (-1 == LZ_compress_finish(lz)) {
show_error( "LZ_compress_finish() failed." );
fatal();
}
while (!LZ_compress_finished(lz)) {
work_lz_rd(w2m_blk, sizeof_compr, lz);
}
if (-1 == LZ_compress_close(lz)) {
show_error( "LZ_compress_close() failed." );
fatal();
}
}
w2m_blk->id = s2w_blk->id;
/* Push block to muxer. */
xlock(&w2m_q->av_or_exit);
w2m_blk->next = w2m_q->head;
w2m_q->head = w2m_blk;
if (w2m_blk->id == w2m_q->needed) {
xsignal(&w2m_q->av_or_exit);
}
xunlock(&w2m_q->av_or_exit);
}
static void
work(S2w_q *s2w_q, W2m_q *w2m_q, unsigned clidx,
const size_t sizeof_compr, const size_t sizeof_w2m_blk)
{
for (;;) {
S2w_blk *s2w_blk;
/* Grab a block to work on. */
xlock_pred(&s2w_q->av_or_eof);
while (0 == s2w_q->head && !s2w_q->eof) {
xwait(&s2w_q->av_or_eof);
}
if (0 == s2w_q->head) {
/* No blocks available and splitter exited. */
xunlock(&s2w_q->av_or_eof);
break;
}
s2w_blk = s2w_q->head;
s2w_q->head = s2w_blk->next;
if (0 == s2w_q->head) {
s2w_q->tail = 0;
}
xunlock(&s2w_q->av_or_eof);
work_compr(s2w_blk, w2m_q, clidx, sizeof_compr, sizeof_w2m_blk);
(*freef)(s2w_blk);
}
/* Notify muxer when last worker exits. */
xlock(&w2m_q->av_or_exit);
if (0u == --w2m_q->working && 0 == w2m_q->head) {
xsignal(&w2m_q->av_or_exit);
}
xunlock(&w2m_q->av_or_exit);
}
struct Work_arg
{
S2w_q *s2w_q;
W2m_q *w2m_q;
unsigned clidx;
size_t sizeof_compr,
sizeof_W2m_blk;
};
static void *
work_wrap(void *v_work_arg)
{
Work_arg *work_arg;
work_arg = (Work_arg *)v_work_arg;
work(
work_arg->s2w_q,
work_arg->w2m_q,
work_arg->clidx,
work_arg->sizeof_compr,
work_arg->sizeof_W2m_blk
);
return 0;
}
static void *
reord_alloc(size_t size, void *)
{
return (*mallocf)(size);
}
static void
reord_dealloc(void *ptr, void *)
{
(*freef)(ptr);
}
static void
mux_write(M2s_q *m2s_q, lacos_rbtree_node **reord,
uint64_t *reord_needed, int outfd)
{
assert(0 != *reord);
/*
Go on until the tree becomes empty or the next block is found to be
missing.
*/
do {
lacos_rbtree_node *reord_head;
W2m_blk *reord_w2m_blk;
reord_head = lacos_rbtree_min(*reord);
assert(0 != reord_head);
reord_w2m_blk = (W2m_blk *)(*(void **)reord_head);
if (reord_w2m_blk->id != *reord_needed) {
break;
}
/* Write out "reord_w2m_blk". */
if (-1 != outfd) {
char unsigned *cp;
cp = reord_w2m_blk->compr;
while (reord_w2m_blk->produced > 0u) {
ssize_t written;
written = write(outfd, cp, reord_w2m_blk->produced > (size_t)SSIZE_MAX
? (size_t)SSIZE_MAX : reord_w2m_blk->produced);
if (-1 == written) {
fail("write()", errno);
}
reord_w2m_blk->produced -= (size_t)written;
cp += written;
}
}
++*reord_needed;
xlock(&m2s_q->av);
if (0u == m2s_q->num_free++) {
xsignal(&m2s_q->av);
}
xunlock(&m2s_q->av);
lacos_rbtree_delete(
reord, /* new_root */
reord_head, /* old_node */
0, /* old_data */
reord_dealloc, /* dealloc() */
0 /* alloc_ctl */
);
/* Release "reord_w2m_blk". */
(*freef)(reord_w2m_blk);
} while (0 != *reord);
}
static void
mux(W2m_q *w2m_q, M2s_q *m2s_q, int outfd)
{
lacos_rbtree_node *reord;
uint64_t reord_needed;
reord = 0;
reord_needed = 0u;
xlock_pred(&w2m_q->av_or_exit);
for (;;) {
W2m_blk *w2m_blk;
/* Grab all available compressed blocks in one step. */
while (0 == w2m_q->head && 0u < w2m_q->working) {
xwait(&w2m_q->av_or_exit);
}
if (0 == w2m_q->head) {
/* w2m_q is empty and all workers exited */
break;
}
w2m_blk = w2m_q->head;
w2m_q->head = 0;
xunlock(&w2m_q->av_or_exit);
/* Merge blocks fetched this time into tree. */
do {
lacos_rbtree_node *new_node;
W2m_blk *next;
if (-1 == lacos_rbtree_insert(
&reord, /* new_root */
&new_node, /* new_node */
w2m_blk, /* new_data */
w2m_blk_cmp, /* cmp() */
reord_alloc, /* alloc() */
0 /* alloc_ctl */
)) {
/* id collision shouldn't happen */
assert(0 == new_node);
show_error( "lacos_rbtree_insert(): out of memory." );
fatal();
}
next = w2m_blk->next;
w2m_blk->next = 0;
w2m_blk = next;
} while (0 != w2m_blk);
/* Write out initial continuous sequence of reordered blocks. */
mux_write(m2s_q, &reord, &reord_needed, outfd);
xlock_pred(&w2m_q->av_or_exit);
w2m_q->needed = reord_needed;
}
xunlock(&w2m_q->av_or_exit);
assert(0 == reord);
}
static void
plzip(unsigned num_worker, unsigned num_slot, unsigned clidx, int print_cctrs,
int infd, int outfd)
{
S2w_q s2w_q;
W2m_q w2m_q;
M2s_q m2s_q;
Split_arg split_arg;
pthread_t splitter;
Work_arg work_arg;
pthread_t *worker;
unsigned i;
assert(clidx < sizeof compr_lev / sizeof compr_lev[0]);
s2w_q_init(&s2w_q);
w2m_q_init(&w2m_q, num_worker);
m2s_q_init(&m2s_q, num_slot);
#define SIZES(struc, arr, arsz_unsigned, arg) \
do { \
unsigned tmp; \
\
tmp = arsz_unsigned; \
if ((size_t)-1 < tmp) { \
show_error( "size_t overflow in sizeof_" #arr "." ); \
fatal(); \
} \
arg ## _arg . sizeof_ ## arr = tmp; \
\
if ((size_t)-1 - sizeof(struc) \
< arg ## _arg . sizeof_ ## arr - (size_t)1) { \
show_error( "size_t overflow in sizeof_" #struc "." ); \
fatal(); \
} \
arg ## _arg . sizeof_ ## struc = sizeof(struc) \
+ (arg ## _arg . sizeof_ ## arr - (size_t)1); \
} while (0)
split_arg.m2s_q = &m2s_q;
split_arg.s2w_q = &s2w_q;
split_arg.infd = infd;
SIZES(S2w_blk, plain, 2u * compr_lev[clidx].dict_size, split);
xcreate(&splitter, split_wrap, &split_arg);
work_arg.s2w_q = &s2w_q;
work_arg.w2m_q = &w2m_q;
work_arg.clidx = clidx;
SIZES(W2m_blk, compr, (4u + 1u + 1u)
+ ((unsigned)split_arg.sizeof_plain * 9u + 7u) / 8u + (4u + 8u + 8u),
work);
#undef SIZES
assert(0u < num_worker);
assert((size_t)-1 / sizeof *worker >= num_worker);
worker = (pthread_t *)xalloc(num_worker * sizeof *worker);
for (i = 0u; i < num_worker; ++i) {
xcreate(&worker[i], work_wrap, &work_arg);
}
mux(&w2m_q, &m2s_q, outfd);
i = num_worker;
do {
xjoin(worker[--i]);
} while (0u < i);
(*freef)(worker);
xjoin(splitter);
const int FW = ( sizeof(long unsigned) * 8 ) / 3 + 1;
if (print_cctrs && 0 > fprintf(stderr,
"any worker tried to consume from splitter: %*lu\n"
"any worker stalled : %*lu\n"
"muxer tried to consume from workers : %*lu\n"
"muxer stalled : %*lu\n"
"splitter tried to consume from muxer : %*lu\n"
"splitter stalled : %*lu\n",
FW, s2w_q.av_or_eof.ccount,
FW, s2w_q.av_or_eof.wcount,
FW, w2m_q.av_or_exit.ccount,
FW, w2m_q.av_or_exit.wcount,
FW, m2s_q.av.ccount,
FW, m2s_q.av.wcount) )
{
fatal();
}
m2s_q_uninit(&m2s_q, num_slot);
w2m_q_uninit(&w2m_q);
s2w_q_uninit(&s2w_q);
}
void *
plzip_wrap(void *v_arg)
{
Plzip_arg *arg = (Plzip_arg *)v_arg;
plzip(
arg->num_worker,
arg->num_slot,
arg->clidx,
arg->print_cctrs,
arg->infd,
arg->outfd
);
xraise(SIGUSR2);
return 0;
}

30
plzip.h Normal file
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/* Plzip - A parallel version of the lzip data compressor
Copyright (C) 2009 Laszlo Ersek.
Copyright (C) 2009 Antonio Diaz Diaz.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
struct Plzip_arg
{
unsigned num_worker,
num_slot,
clidx;
int print_cctrs,
infd,
outfd;
};
void *
plzip_wrap(void *v_arg);

BIN
testsuite/COPYING.lz Normal file

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69
testsuite/check.sh Executable file
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#! /bin/sh
# check script for Plzip - A parallel version of the lzip data compressor
# Copyright (C) 2009 Antonio Diaz Diaz.
#
# This script is free software: you have unlimited permission
# to copy, distribute and modify it.
LC_ALL=C
export LC_ALL
objdir=`pwd`
testdir=`cd "$1" ; pwd`
LZIP="${objdir}"/plzip
framework_failure() { echo 'failure in testing framework'; exit 1; }
if [ ! -x "${LZIP}" ] ; then
echo "${LZIP}: cannot execute"
exit 1
fi
if [ -d tmp ] ; then rm -rf tmp ; fi
mkdir tmp
echo -n "testing plzip..."
cd "${objdir}"/tmp
cat "${testdir}"/../COPYING > in || framework_failure
fail=0
"${LZIP}" -cd "${testdir}"/COPYING.lz > copy || fail=1
cmp in copy || fail=1
for i in s4096 1 2 3 4 5 6 7 8; do
"${LZIP}" -k -$i in || fail=1
mv -f in.lz copy.lz || fail=1
echo -n "garbage" >> copy.lz || fail=1
"${LZIP}" -df copy.lz || fail=1
cmp in copy || fail=1
echo -n .
done
for i in s4096 1 2 3 4 5 6 7 8; do
"${LZIP}" -c -$i in > out || fail=1
echo -n "g" >> out || fail=1
"${LZIP}" -cd out > copy || fail=1
cmp in copy || fail=1
echo -n .
done
for i in s4096 1 2 3 4 5 6 7 8; do
"${LZIP}" -c -$i < in > out || fail=1
"${LZIP}" -d < out > copy || fail=1
cmp in copy || fail=1
echo -n .
done
for i in s4096 1 2 3 4 5 6 7 8; do
"${LZIP}" -f -$i -o out < in || fail=1
"${LZIP}" -df -o copy < out.lz || fail=1
cmp in copy || fail=1
echo -n .
done
echo
if [ ${fail} = 0 ] ; then
echo "tests completed successfully."
cd "${objdir}" && rm -r tmp
else
echo "tests failed."
fi
exit ${fail}