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/*
* Copyright (c) 2002-2007 Samit Basu, Eugene Ingerman
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include "blas_wrap.h"
#include "blas_dyn_link.h"
#include <iostream>
#include <vector>
#include <QtGlobal>
#include <QCoreApplication>
#include <QString>
#include <QStringList>
#include <QLibrary>
#include <QSettings>
#include <QSysInfo>
#include "Array.hpp"
#include "Exception.hpp"
#include "DebugStream.hpp"
#include "Interpreter.hpp"
#ifdef DYN_BLAS
extern "C" {
int xerbla(char*, int*, int) {return 0;}
int xerbla_(char*, int*, int) {return 0;}
int _xerbla(char*, int*, int) {return 0;}
int XERBLA(char*, int*, int) {return 0;}
int XERBLA_(char*, int*, int) {return 0;}
int _XERBLA(char*, int*, int) {return 0;}
}
BlasWrapper::BlasWrapper() : useReference(true)
{
}
void BlasWrapper::Init( void )
{
blasLib = new QLibrary();
InitFunctions();
DiscoverBlasLibrary();
if( libList.empty() ) return;
QSettings settings("FreeMat",Interpreter::getVersionString());
if (!LoadLibByName(settings.value("interpreter/blas","").toString().toStdString()))
LoadLib( *(libList.begin()) );
}
std::string BlasWrapper::ComputerType( void )
{
#ifdef Q_WS_WIN
if( QSysInfo::WindowsVersion & QSysInfo::WV_NT_based )
return std::string("Win32");
return "Unknown";
#endif
#ifdef Q_WS_MAC
return std::string( "OSX" );
#endif
if (QSysInfo::WordSize == 32)
return std::string( "Linux32" );
if (QSysInfo::WordSize == 64)
return std::string( "Linux64" );
return std::string("unknown");
}
void BlasWrapper::ListLibraries( std::string& msg )
{
if (useReference) {
msg = std::string("Internal reference BLAS. Unoptimized");
return;
}
std::list<LibConf>::iterator it = libList.begin();
msg.clear();
while( it != libList.end() ){
if (it->Name == currentLib.Name)
msg.append("*");
msg.append( it->Name.toStdString() + "\t-\t" + it->desc.toStdString() + "\n" );
++it;
}
}
bool BlasWrapper::LoadLibByName( const std::string& name )
{
std::list<LibConf>::iterator it = libList.begin();
while( it != libList.end() ){
if( it->Name.toStdString() == name ){
LoadLib( *it );
return true;
}
++it;
}
return false;
}
void BlasWrapper::LoadLib( const LibConf& libConf )
{
InitFunctions(); //clear function pointers to reload the library
blasLib->unload(); //unload the old libarary
currentLib = libConf;
blasLib->setFileName( currentLib.fileName );
if( !blasLib->load() ) return;
useReference = false;
QSettings settings("FreeMat",Interpreter::getVersionString());
settings.setValue("interpreter/blas",libConf.Name);
}
void BlasWrapper::DiscoverBlasLibrary( void )
{
QSettings *libsettings = new QSettings( QCoreApplication::applicationDirPath()+"/blas.ini", QSettings::IniFormat );
libsettings->beginGroup( ComputerType().c_str() );
QStringList libs = libsettings->childGroups();
QStringListIterator libs_it(libs);
while( libs_it.hasNext() ){
QString lib_kind = libs_it.next();
libsettings->beginGroup( lib_kind );
//we try loading every library we find in config file.
blasLib->setFileName( libsettings->value( "libname" ).toString() );
if( blasLib->load() ){
LibConf lib;
lib.Name = lib_kind;
lib.fileName = libsettings->value( "libname" ).toString();
lib.capitalized = libsettings->value( "capfnames" ).toBool();
lib.prefix = libsettings->value( "prefix" ).toString();
lib.suffix = libsettings->value( "suffix" ).toString();
lib.desc = libsettings->value( "desc" ).toString();
libList.push_back( lib );
blasLib->unload();
}
libsettings->endGroup();
}
delete libsettings;
return;
}
void* BlasWrapper::Resolve( const char* function_name, void (*default_fcn)() )
{
dbout << "Resolve of " << function_name << "\n";
if (useReference) return (void*)(default_fcn);
void *p;
QString fname( function_name );
if( currentLib.capitalized )
fname = fname.toUpper();
//TODO: handle prefix, suffix.
fname = currentLib.prefix + fname + currentLib.suffix;
if( !(p = blasLib->resolve( fname.toAscii() ))){
return (void*)(default_fcn);
}
return p;
}
void BlasWrapper::InitFunctions( void )
{
fn.resize( BLAS_NUM_FNS );
std::vector<void*>::iterator it = fn.begin();
while( it != fn.end() )
*(it++) = 0;
}
extern BlasWrapper wrapper;
void LoadBlasFunctions( void )
{
wrapper.Init();
}
#endif
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