pression::PluginRegistry Class Reference

A registry for loaded plugins. More...

#include <pluginRegistry.h>

Collaboration diagram for pression::PluginRegistry:

Public Member Functions
PRESSION_API	PluginRegistry ()
	Construct a new plugin registry. More...
PRESSION_API	~PluginRegistry ()
	Destruct this plugin registry. More...
PRESSION_API void	addDirectory (const std::string &path)
	Add a new directory to search for compressor DSOs during init(). More...
PRESSION_API void	removeDirectory (const std::string &path)
	Remove a plugin directory. More...
PRESSION_API const Strings &	getDirectories () const
PRESSION_API bool	addLunchboxPlugins ()
	Add the lunchbox library plugins to this registry. More...
PRESSION_API void	init ()
PRESSION_API void	exit ()
PRESSION_API VisitorResult	accept (PluginVisitor &visitor)
	Visit all plugins and compressors. More...
PRESSION_API VisitorResult	accept (ConstPluginVisitor &visitor) const
	Visit all plugins and compressors. More...
PRESSION_API const Plugins &	getPlugins () const
PRESSION_API Plugin *	findPlugin (const uint32_t name)
PRESSION_API const Plugin *	findPlugin (const uint32_t name) const
PRESSION_API bool	addPlugin (const std::string &filename)

Detailed Description

A registry for loaded plugins.

Downstream projects such as Collage and Equalizer use and initialize a global plugin registry in their respective initialization calls by adding directories in co::init(). This internal plugin registry can be obtained using co::Global::getPluginRegistry().

Example:

/* Copyright (c) 2010, Cedric Stalder <cedric.stalder@gmail.com>
 *               2010-2014, Stefan Eilemann <eile@eyescale.ch>
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License version 2.1 as published
 * by the Free Software Foundation.
 *
 * This library 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 Lesser General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#define TEST_RUNTIME 600 // seconds
#include <test.h>

#include <pression/compressor.h>
#include <pression/compressorInfo.h>
#include <pression/compressorResult.h>
#include <pression/decompressor.h>
#include <pression/plugin.h>
#include <pression/pluginRegistry.h>

#include <lunchbox/buffer.h>
#include <lunchbox/clock.h>
#include <lunchbox/file.h>
#include <lunchbox/memoryMap.h>
#include <lunchbox/rng.h>

#include <algorithm>

using namespace pression;

void _testFile();
void _testRandom();
void _testData( const uint32_t nameCompressor, const std::string& name,
                const uint8_t* data, const uint64_t size );

std::vector< uint32_t > getCompressorNames( const uint32_t tokenType );
Strings getFiles( const std::string& path, Strings& files,
                  const std::string& ext );

PluginRegistry registry;
uint64_t _result = 0;
uint64_t _size = 0;
float _compressionTime = 0;
float _decompressionTime = 0;
float _baseTime = 0.f;

int main( int, char** )
{
    registry.addDirectory( std::string( PRESSION_BUILD_DIR ) + "/lib" );
    TEST( registry.addLunchboxPlugins( ));
    registry.init();

    _testFile();
    _testRandom();
    registry.exit();

    Compressor compressor;
    TEST( !compressor.isGood( ));
    TEST( !compressor );

    Decompressor decompressor;
    TEST( !decompressor.isGood( ));
    TEST( !decompressor );
    return EXIT_SUCCESS;
}

std::vector< uint32_t > getCompressorNames( const uint32_t tokenType )
{
    const Plugins& plugins = registry.getPlugins();
    std::vector< uint32_t > names;

    for( PluginsCIter i = plugins.begin(); i != plugins.end(); ++i )
    {
        const CompressorInfos& infos = (*i)->getInfos();
        for( CompressorInfosCIter j = infos.begin(); j != infos.end(); ++j )
        {
            if ( (*j).tokenType == tokenType )
                names.push_back( (*j).name );
        }
    }

    std::sort( names.begin(), names.end( ));
    return names;
}

void _testData( const uint32_t compressorName, const std::string& name,
                const uint8_t* data, const uint64_t size )
{
    Compressor compressor( registry, compressorName );
    Decompressor decompressor( registry, compressorName );
    TEST( compressor.isGood( ));
    TEST( compressor );
    TESTINFO( decompressor.isGood(), compressorName );
    TESTINFO( decompressor, compressorName );

    const uint64_t flags = EQ_COMPRESSOR_DATA_1D;
    uint64_t inDims[2]  = { 0, size };

    compressor.compress( const_cast<uint8_t*>(data), inDims, flags );
    lunchbox::Clock clock;
    compressor.compress( const_cast<uint8_t*>(data), inDims, flags );
    const float compressTime = clock.getTimef();

    const CompressorResult& compressed = compressor.getResult();
    const uint64_t compressedSize = compressed.getSize();
    std::vector< void * > chunks;
    std::vector< uint64_t > chunkSizes;
    chunks.resize( compressed.chunks.size( ));
    chunkSizes.resize( chunks.size( ));

    for( unsigned i = 0; i < chunks.size(); ++i )
    {
        chunks[ i ] = compressed.chunks[i].data;
        chunkSizes[ i ] =  compressed.chunks[i].getNumBytes();
    }

    lunchbox::Bufferb result;
    result.resize( size );
    uint8_t* outData = result.getData();

    decompressor.decompress( &chunks.front(), &chunkSizes.front(),
                             unsigned( chunks.size( )), outData, inDims );

    clock.reset();
    decompressor.decompress( &chunks.front(), &chunkSizes.front(),
                             unsigned(chunks.size()), outData, inDims);
    const float decompressTime = clock.getTimef();

    TEST( memcmp( outData, data, size ) == 0 );
    std::cout  << std::setw(20) << name << ", 0x" << std::setw(8)
               << std::setfill( '0' ) << std::hex << compressorName << std::dec
               << std::setfill(' ') << ", " << std::setw(10) << size << ", "
               << std::setw(10) << compressedSize << ", " << std::setw(10)
               << compressTime << ", " << std::setw(10) << decompressTime
               << std::endl;
    _size += size;
    _result += compressedSize;
    _compressionTime += compressTime;
    _decompressionTime += decompressTime;
}

void _testFile()
{
    std::vector< uint32_t >compressorNames =
        getCompressorNames( EQ_COMPRESSOR_DATATYPE_BYTE );

    std::vector< std::string > files;

    getFiles( "", files, ".*\\.dll" );
    getFiles( "", files, ".*\\.exe" );
    getFiles( "", files, ".*\\.so" );
    getFiles( "../bin", files, ".*\\.dll" );
    getFiles( "../lib", files, ".*\\.so" );
    getFiles( "../../install/bin", files, ".*\\.dll" );
    getFiles( "../../install/lib", files, ".*\\.so" );
    getFiles( "images", files, ".*\\.rgb" );
    getFiles( "", files, ".*\\.a" );
    getFiles( "", files, ".*\\.dylib" );
    getFiles( "/Users/eile/Library/Models/mediumPly/", files, ".*\\.bin" );
    getFiles( "/Users/eile/Library/Models/mediumPly/", files, ".*\\.ply" );
    getFiles( "/home/eilemann/Software/Models/mediumPly/", files, ".*\\.bin" );
    getFiles( "/home/eilemann/Software/Models/mediumPly/", files, ".*\\.ply" );

    // Limit to 30 files using a pseudo-random selection for reproducability
    const size_t maxFiles = 30;
    if( files.size() > maxFiles )
    {
        const size_t cut = files.size() - maxFiles;
        for( size_t i = 0; i < cut; ++i )
            files.erase( files.begin() + (i * 997 /*prime*/) % files.size( ));
    }

    std::cout.setf( std::ios::right, std::ios::adjustfield );
    std::cout.precision( 5 );
    std::cout << "                File, Compressor, Uncompress, "
              << "Compressed,     t_comp,   t_decomp" << std::endl;
    for( std::vector< uint32_t >::const_iterator i = compressorNames.begin();
         i != compressorNames.end(); ++i )
    {
        _result = 0;
        _size = 0;
        _compressionTime = 0;
        _decompressionTime = 0;

        for( StringsCIter j = files.begin(); j != files.end(); ++j )
        {
            lunchbox::MemoryMap file;
            const uint8_t* data = static_cast<const uint8_t*>( file.map( *j ));

            if( !data )
            {
                LBERROR << "Can't mmap " << *j << std::endl;
                continue;
            }

            const size_t size = file.getSize();
            const std::string name = lunchbox::getFilename( *j );

            _testData( *i, name, data, size );
        }
        if( _baseTime == 0.f )
            _baseTime = _compressionTime + _decompressionTime;

        std::cout << std::setw(24) << "Total, 0x" << std::setw(8)
                  << std::setfill( '0' ) << std::hex << *i << std::dec
                  << std::setfill(' ') << ", " << std::setw(10) << _size << ", "
                  << std::setw(10) << _result << ", " << std::setw(10)
                  << _compressionTime << ", " << std::setw(10)
                  << _decompressionTime << std::endl
                  << "    info->ratio = " << float(_result) / float(_size)
                  << "f;" << std::endl
                  << "    info->speed = " << float(_baseTime) /
                                    float(_compressionTime + _decompressionTime)
                  << "f;" << std::endl << std::endl;
    }
}

void _testRandom()
{
    ssize_t size = LB_10MB;
    uint8_t* data = new uint8_t[size];
    lunchbox::RNG rng;
#pragma omp parallel for
    for( ssize_t i = 0; i < size; ++i )
        data[i] = rng.get< uint8_t >();

    std::vector< uint32_t >compressorNames =
        getCompressorNames( EQ_COMPRESSOR_DATATYPE_BYTE );
    _result = 0;
    _size = 0;
    _compressionTime = 0;
    _decompressionTime = 0;

    for( std::vector<uint32_t>::const_iterator i = compressorNames.begin();
         i != compressorNames.end(); ++i )
    {
        size = LB_10MB;
        for( size_t j = 0; j<8; ++j ) // test all granularities between mod 8..1
        {
            _testData( *i, "Random data", data, size );
            --size;
        }
        std::cout << std::setw(24) << "Total, 0x" << std::setw(8)
                  << std::setfill( '0' ) << std::hex << *i << std::dec
                  << std::setfill(' ') << ", " << std::setw(10) << _size << ", "
                  << std::setw(10) << _result << ", " << std::setw(10)
                  << _compressionTime << ", " << std::setw(10)
                  << _decompressionTime << std::endl << std::endl;
   }

    delete [] data;
}

Strings getFiles( const std::string& path, Strings& files,
                  const std::string& ext )
{
    Strings paths = registry.getDirectories();
    if( !path.empty( ))
        paths.push_back( path );

    for( uint64_t j = 0; j < paths.size(); ++j )
    {
        const Strings& candidates = lunchbox::searchDirectory( paths[j], ext );
        for( StringsCIter i = candidates.begin(); i != candidates.end(); ++i )
        {
            const std::string& filename = *i;
            files.push_back( paths[j] + '/' + filename );
        }
    }
    return files;
}

Definition at line 43 of file pluginRegistry.h.

Constructor & Destructor Documentation

PRESSION_API pression::PluginRegistry::PluginRegistry

(

)

Construct a new plugin registry.

Version

1.7.1

PRESSION_API pression::PluginRegistry::~PluginRegistry

(

)

Destruct this plugin registry.

Version

1.7.1

Member Function Documentation

PRESSION_API VisitorResult pression::PluginRegistry::accept

(

PluginVisitor &

visitor

)

Visit all plugins and compressors.

Returns

TRAVERSE_TERMINATE immediately when one visit method returned terminate, TRAVERSE_PRUNE if at least one visit method returned prune, TRAVERSE_CONTINUE otherwise.

Version

1.7.1

PRESSION_API VisitorResult pression::PluginRegistry::accept

(

ConstPluginVisitor &

visitor

)

const

Visit all plugins and compressors.

Version

1.7.1

PRESSION_API void pression::PluginRegistry::addDirectory

(

const std::string &

path

)

Add a new directory to search for compressor DSOs during init().

Version

1.0 in Collage

1.7.1 in Lunchbox

PRESSION_API bool pression::PluginRegistry::addLunchboxPlugins

(

)

Add the lunchbox library plugins to this registry.

Returns

true on success, false otherwise.

Version

1.7.1

PRESSION_API const Strings& pression::PluginRegistry::getDirectories

(

)

const

Returns

all directories to search for compressor DSOs during init().

Version

1.0 in Collage

1.7.1 in Lunchbox

PRESSION_API void pression::PluginRegistry::removeDirectory

(

const std::string &

path

)

Remove a plugin directory.

Version

1.0

---

The documentation for this class was generated from the following file:

• pluginRegistry.h