WKernel.cpp 6.55 KB
Newer Older
ebaum's avatar
[ADD]  
ebaum committed
1 2
//---------------------------------------------------------------------------
//
3
// Project: OpenWalnut ( http://www.openwalnut.org )
ebaum's avatar
[ADD]  
ebaum committed
4
//
5 6
// Copyright 2009 OpenWalnut Community, BSV@Uni-Leipzig and CNCF@MPI-CBS
// For more information see http://www.openwalnut.org/copying
ebaum's avatar
[ADD]  
ebaum committed
7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
//
// This file is part of OpenWalnut.
//
// OpenWalnut is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// OpenWalnut 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 OpenWalnut. If not, see <http://www.gnu.org/licenses/>.
//
//---------------------------------------------------------------------------

25 26 27 28
#if defined(__APPLE__)
#include <mach-o/dyld.h>
#endif

ebaum's avatar
[ADD]  
ebaum committed
29
#include <iostream>
ebaum's avatar
ebaum committed
30
#include <list>
31 32
#include <string>
#include <vector>
ebaum's avatar
ebaum committed
33 34

#include <boost/thread/xtime.hpp>
ebaum's avatar
[ADD]  
ebaum committed
35

ebaum's avatar
ebaum committed
36
#include "WModule.h"
37
#include "WModuleFactory.h"
ebaum's avatar
[ADD]  
ebaum committed
38 39
#include "../common/WException.h"

ebaum's avatar
ebaum committed
40 41
#include "../graphicsEngine/WGraphicsEngine.h"

42
#include "WKernel.h"
43

44
/**
ebaum's avatar
ebaum committed
45 46 47 48
 * Used for program wide access to the kernel.
 */
WKernel* kernel = NULL;

49 50
WKernel::WKernel( boost::shared_ptr< WGraphicsEngine > ge, boost::shared_ptr< WGUI > gui )
    :WThreadedRunner()
ebaum's avatar
[ADD]  
ebaum committed
51
{
52
    WLogger::getLogger()->addLogMessage( "Initializing Kernel", "Kernel", LL_DEBUG );
ebaum's avatar
ebaum committed
53

54
    // init the singleton
ebaum's avatar
ebaum committed
55 56
    kernel = this;

ebaum's avatar
[ADD]  
ebaum committed
57
    // initialize members
ebaum's avatar
ebaum committed
58
    m_FinishRequested = false;
ebaum's avatar
[ADD]  
ebaum committed
59

60 61
    m_gui = gui;
    m_graphicsEngine = ge;
62

63
    // init
ebaum's avatar
ebaum committed
64
    init();
ebaum's avatar
[ADD]  
ebaum committed
65 66 67 68 69
}

WKernel::~WKernel()
{
    // cleanup
70
    WLogger::getLogger()->addLogMessage( "Shutting down Kernel", "Kernel", LL_DEBUG );
ebaum's avatar
[ADD]  
ebaum committed
71 72
}

73
void WKernel::init()
ebaum's avatar
[ADD]  
ebaum committed
74
{
75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92
     // initialize
    findAppPath();

    // get module factory
    m_moduleFactory = WModuleFactory::getModuleFactory();

    // initialize module container
    m_moduleContainer = boost::shared_ptr< WModuleContainer >( new WModuleContainer( "KernelRootContainer",
                "Root module container in Kernel." ) );

    // initialize graphics engine, or, at least set some stuff
    m_graphicsEngine->setShaderPath( m_shaderPath );

    // initialize Datahandler
    m_dataHandler = boost::shared_ptr< WDataHandler >( new WDataHandler() );

    // load all modules
    m_moduleFactory->load();
ebaum's avatar
[ADD]  
ebaum committed
93 94
}

ebaum's avatar
ebaum committed
95 96 97 98 99
WKernel* WKernel::getRunningKernel()
{
    return kernel;
}

100
boost::shared_ptr< WGraphicsEngine > WKernel::getGraphicsEngine() const
ebaum's avatar
ebaum committed
101
{
102
    return m_graphicsEngine;
ebaum's avatar
ebaum committed
103 104
}

Sebastian Eichelbaum's avatar
[MERGE]  
Sebastian Eichelbaum committed
105
boost::shared_ptr< WModuleContainer > WKernel::getRootContainer() const
106
{
Sebastian Eichelbaum's avatar
[MERGE]  
Sebastian Eichelbaum committed
107
    return m_moduleContainer;
108 109
}

Sebastian Eichelbaum's avatar
[MERGE]  
Sebastian Eichelbaum committed
110
boost::shared_ptr< WGUI > WKernel::getGui() const
111
{
112
    return m_gui;
113 114
}

Sebastian Eichelbaum's avatar
[MERGE]  
Sebastian Eichelbaum committed
115 116
void WKernel::stop()
{
117 118 119 120
    WLogger::getLogger()->addLogMessage( "Stopping Kernel", "Kernel", LL_DEBUG );

    // stop everybody
    // NOTE: stopping a container erases all modules inside.
Sebastian Eichelbaum's avatar
[STYLE]  
Sebastian Eichelbaum committed
121
    getRootContainer()->stop();
Sebastian Eichelbaum's avatar
[MERGE]  
Sebastian Eichelbaum committed
122 123
}

124
void WKernel::threadMain()
ebaum's avatar
ebaum committed
125
{
126
    WLogger::getLogger()->addLogMessage( "Starting Kernel", "Kernel", LL_DEBUG );
ebaum's avatar
ebaum committed
127

128 129
    // wait for GUI to be initialized properly
    // TODO(ebaum): this loop is ugly, will be replaced by some kind of one-shot condition
130
    while ( !m_gui->isInitalized() )
131 132
    {
    }
Sebastian Eichelbaum's avatar
[MERGE]  
Sebastian Eichelbaum committed
133

134
    // default modules
135
    m_moduleContainer->add( m_moduleFactory->create( m_moduleFactory->getPrototypeByName( "Navigation Slice Module" ) ) , true );
136
    m_moduleContainer->add( m_moduleFactory->create( m_moduleFactory->getPrototypeByName( "Coordinate System Module" ) ) , true );
137

138 139 140
    // actually there is nothing more to do here
    waitForStop();
    WLogger::getLogger()->addLogMessage( "Shutting down Kernel", "Kernel", LL_DEBUG );
141 142 143 144 145 146
}

bool WKernel::findAppPath()
{
    // FIXME (schurade)
    // this should work on linux, have to implement it for windows and mac later
Alexander Wiebel's avatar
Alexander Wiebel committed
147
#ifdef __linux__
148 149 150 151 152 153 154 155
    int length;
    char appPath[255];

    length = readlink( "/proc/self/exe", appPath, sizeof( appPath ) );

    // Catch some errors
    if ( length < 0 )
    {
156
        WLogger::getLogger()->addLogMessage( "Error resolving symlink /proc/self/exe.", "Kernel", LL_ERROR );
157 158 159 160
        return false;
    }
    if ( length >= 255 )
    {
161
        WLogger::getLogger()->addLogMessage( "Path too long. Truncated.", "Kernel", LL_ERROR );
162 163 164 165 166 167 168 169 170 171 172
        return false;
    }

    // the string this readlink() function returns is appended with a '@'.
    appPath[length] = '\0';

    // strip off the executable name
    while ( appPath[length] != '/' )
    {
        appPath[length] = '\0';
        --length;
schurade's avatar
schurade committed
173
        assert( length >= 0 );
174 175 176 177 178
    }

    m_AppPath = appPath;

    std::string shaderPath( appPath );
179
    m_shaderPath = shaderPath + "shaders/";
180 181

    return true;
schurade's avatar
schurade committed
182
#elif defined( __APPLE__ )
183
    char path[1024];
schurade's avatar
schurade committed
184
    uint32_t size = sizeof( path );
185
    if( _NSGetExecutablePath( path, &size ) == 0 )
186
    {
187 188 189
        WLogger::getLogger()->addLogMessage( "Executable path is " + std::string( path ), "Kernel", LL_ERROR );

        int i = strlen( path );
schurade's avatar
schurade committed
190 191 192 193 194 195
        while( path[i] != '/' )
        {
            path[i] = '\0';
            i--;
            assert( i >= 0 );
        }
196
        WLogger::getLogger()->addLogMessage( "Application path is " + std::string( path ), "Kernel", LL_ERROR );
schurade's avatar
schurade committed
197 198 199 200 201 202
        m_AppPath = path;

        std::string shaderPath( path );
        m_shaderPath = shaderPath + "shaders/";

        return true;
203 204 205
    }
    else
    {
206
        WLogger::getLogger()->addLogMessage( "Buffer too small; need size " + boost::lexical_cast< std::string >( size ),
207
                                             "Kernel", LL_ERROR );
schurade's avatar
schurade committed
208
        assert( size <= sizeof( path ) );
209 210 211 212 213 214
    }
#else
#error findAppPath not implemented for this platform
#endif

    return false;
ebaum's avatar
ebaum committed
215 216
}

217
bool WKernel::isFinishRequested() const
ebaum's avatar
ebaum committed
218 219
{
    return m_FinishRequested;
ebaum's avatar
[ADD]  
ebaum committed
220 221
}

222 223
void WKernel::doLoadDataSets( std::vector< std::string > fileNames )
{
224 225 226 227 228 229 230
    // add a new data module for each file to load
    for ( std::vector< std::string >::iterator iter = fileNames.begin(); iter != fileNames.end(); ++iter )
    {
        boost::shared_ptr< WModule > mod = m_moduleFactory->create( m_moduleFactory->getPrototypeByName( "Data Module" ) );
        mod->getProperties()->setValue( "filename" , ( *iter ) );
        m_moduleContainer->add( mod );
    }
231 232
}

Sebastian Eichelbaum's avatar
[MERGE]  
Sebastian Eichelbaum committed
233
boost::shared_ptr< WDataHandler > WKernel::getDataHandler() const
234
{
235
    return m_dataHandler;
236 237
}

Sebastian Eichelbaum's avatar
[MERGE]  
Sebastian Eichelbaum committed
238
std::string WKernel::getAppPath() const
239 240 241 242
{
    return m_AppPath;
}

Sebastian Eichelbaum's avatar
[MERGE]  
Sebastian Eichelbaum committed
243
std::string WKernel::getShaderPath() const
244
{
245
    return m_shaderPath;
246
}