common/JackTools.h

   1 /*
   2   Copyright (C) 2006-2008 Grame
   3
   4   This program is free software; you can redistribute it and/or modify
   5   it under the terms of the GNU Lesser General Public License as published by
   6   the Free Software Foundation; either version 2.1 of the License, or
   7   (at your option) any later version.
   8
   9   This program is distributed in the hope that it will be useful,
  10   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12   GNU Lesser General Public License for more details.
  13
  14   You should have received a copy of the GNU Lesser General Public License
  15   along with this program; if not, write to the Free Software
  16   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17
  18 */
  19
  20 #ifndef __JackTools__
  21 #define __JackTools__
  22
  23 #ifdef WIN32
  24 #include <windows.h>
  25 #define DIR_SEPARATOR '\\'
  26 #else
  27 #define DIR_SEPARATOR '/'
  28 #include <sys/stat.h>
  29 #include <sys/types.h>
  30 #include <unistd.h>
  31 #include <dirent.h>
  32 #endif
  33
  34 #ifdef __APPLE__
  35 #include <sys/syslimits.h>
  36 #endif
  37
  38 #include "jslist.h"
  39 #include "JackCompilerDeps.h"
  40 #include "JackError.h"
  41
  42 #include <string>
  43 #include <algorithm>
  44 #include <vector>
  45 #include <iostream>
  46 #include <fstream>
  47
  48 namespace Jack
  49 {
  50
  51     /*!
  52     \brief Utility functions.
  53     */
  54
  55     struct SERVER_EXPORT JackTools
  56     {
  57         static int GetPID();
  58         static int GetUID();
  59
  60         static void KillServer();
  61
  62         static int MkDir(const char* path);
  63         static char* UserDir();
  64         static char* ServerDir(const char* server_name, char* server_dir);
  65         static const char* DefaultServerName();
  66         static void CleanupFiles(const char* server_name);
  67         static int GetTmpdir();
  68         static void RewriteName(const char* name, char* new_name);
  69         static void ThrowJackNetException();
  70
  71         // For OSX only
  72         static int ComputationMicroSec(int buffer_size)
  73         {
  74             if (buffer_size < 128) {
  75                 return 500;
  76             } else if (buffer_size < 256) {
  77                 return 300;
  78             } else {
  79                 return 100;
  80             }
  81         }
  82     };
  83
  84     /*!
  85     \brief Generic monitoring class. Saves data to GnuPlot files ('.plt' and '.log' datafile)
  86
  87     This template class allows to manipulate monitoring records, and automatically generate the GnuPlot config and data files.
  88     Operations are RT safe because it uses fixed size data buffers.
  89     You can set the number of measure points, and the number of records.
  90
  91     To use it :
  92     - create a JackGnuPlotMonitor, you can use the data type you want.
  93     - create a temporary array for your measure
  94     - once you have filled this array with 'measure points' value, call write() to add it to the record
  95     - once you've done with your measurment, just call save() to save your data file
  96
  97     You can also call SetPlotFile() to automatically generate '.plt' file from an options list.
  98
  99     */
 100
 101     template <class T> class JackGnuPlotMonitor
 102     {
 103         private:
 104             uint32_t fMeasureCnt;
 105             uint32_t fMeasurePoints;
 106             uint32_t fMeasureId;
 107             T* fCurrentMeasure;
 108             T** fMeasureTable;
 109             uint32_t fTablePos;
 110             std::string fName;
 111
 112         public:
 113             JackGnuPlotMonitor(uint32_t measure_cnt, uint32_t measure_points, std::string name)
 114             {
 115                     jack_log ( "JackGnuPlotMonitor::JackGnuPlotMonitor %u measure points - %u measures", measure_points, measure_cnt );
 116
 117                     fMeasureCnt = measure_cnt;
 118                     fMeasurePoints = measure_points;
 119                     fTablePos = 0;
 120                     fName = name;
 121                     fCurrentMeasure = new T[fMeasurePoints];
 122                     fMeasureTable = new T*[fMeasureCnt];
 123                     for ( uint32_t cnt = 0; cnt < fMeasureCnt; cnt++ )
 124                     {
 125                             fMeasureTable[cnt] = new T[fMeasurePoints];
 126                             std::fill_n ( fMeasureTable[cnt], fMeasurePoints, 0 );
 127                     }
 128             }
 129
 130             ~JackGnuPlotMonitor()
 131             {
 132                     jack_log ( "JackGnuPlotMonitor::~JackGnuPlotMonitor" );
 133
 134                     for ( uint32_t cnt = 0; cnt < fMeasureCnt; cnt++ )
 135                             delete[] fMeasureTable[cnt];
 136                     delete[] fMeasureTable;
 137                     delete[] fCurrentMeasure;
 138             }
 139
 140             T AddNew(T measure_point)
 141             {
 142                     fMeasureId = 0;
 143                     return fCurrentMeasure[fMeasureId++] = measure_point;
 144             }
 145
 146             uint32_t New()
 147             {
 148                     return fMeasureId = 0;
 149             }
 150
 151             T Add(T measure_point)
 152             {
 153                     return fCurrentMeasure[fMeasureId++] = measure_point;
 154             }
 155
 156             uint32_t AddLast(T measure_point)
 157             {
 158                     fCurrentMeasure[fMeasureId] = measure_point;
 159                     fMeasureId = 0;
 160                     return Write();
 161             }
 162
 163             uint32_t Write()
 164             {
 165                     for ( uint32_t point = 0; point < fMeasurePoints; point++ )
 166                             fMeasureTable[fTablePos][point] = fCurrentMeasure[point];
 167                     if ( ++fTablePos == fMeasureCnt )
 168                             fTablePos = 0;
 169                     return fTablePos;
 170             }
 171
 172             int Save(std::string name = std::string ( "" ))
 173             {
 174                     std::string filename = ( name.empty() ) ? fName : name;
 175                     filename += ".log";
 176
 177                     jack_log ( "JackGnuPlotMonitor::Save filename %s", filename.c_str() );
 178
 179                     std::ofstream file ( filename.c_str() );
 180
 181                     for ( uint32_t cnt = 0; cnt < fMeasureCnt; cnt++ )
 182                     {
 183                             for ( uint32_t point = 0; point < fMeasurePoints; point++ )
 184                                     file << fMeasureTable[cnt][point] << " \t";
 185                             file << std::endl;
 186                     }
 187
 188                     file.close();
 189                     return 0;
 190             }
 191
 192             int SetPlotFile(std::string* options_list, uint32_t options_number,
 193                             std::string* field_names, uint32_t field_number,
 194                             std::string name = std::string ( "" ))
 195             {
 196                     std::string title = ( name.empty() ) ? fName : name;
 197                     std::string plot_filename = title + ".plt";
 198                     std::string data_filename = title + ".log";
 199
 200                     std::ofstream file ( plot_filename.c_str() );
 201
 202                     file << "set multiplot" << std::endl;
 203                     file << "set grid" << std::endl;
 204                     file << "set title \"" << title << "\"" << std::endl;
 205
 206                     for ( uint32_t i = 0; i < options_number; i++ )
 207                             file << options_list[i] << std::endl;
 208
 209                     file << "plot ";
 210                     for ( uint32_t row = 1; row <= field_number; row++ )
 211                     {
 212                             file << "\"" << data_filename << "\" using " << row << " title \"" << field_names[row-1] << "\" with lines";
 213                             file << ( ( row < field_number ) ? ", " : "\n" );
 214                     }
 215
 216                     jack_log ( "JackGnuPlotMonitor::SetPlotFile - Save GnuPlot file to '%s'", plot_filename.c_str() );
 217
 218                     file.close();
 219                     return 0;
 220             }
 221
 222     };
 223
 224     void BuildClientPath(char* path_to_so, int path_len, const char* so_name);
 225     void PrintLoadError(const char* so_name);
 226
 227 }
 228
 229 #endif