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annotate gui/src/octave-adapter/octave-link.h @ 14754:626a8ff2fe8c gui

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The GUI now shows performance information in the status bar of the GUI (ie. how much overhead it causes in the octave thread compares to the terminal version). * main-window: Added update timer. Added slot to update status bar with performance info. * octave-link:: Added performance information struct and timing calls.
author Jacob Dawid <jacob.dawid@googlemail.com>
date Sat, 09 Jun 2012 19:59:43 +0200
parents e94a54ee0f46
children a565c560e654
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1 /* OctaveGUI - A graphical user interface for Octave
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2 * Copyright (C) 2011 John P. Swensen, Jacob Dawid (jacob.dawid@googlemail.com)
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3 *
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4 * This program is free software: you can redistribute it and/or modify
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5 * it under the terms of the GNU General Public License as
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6 * published by the Free Software Foundation, either version 3 of the
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7 * License, or (at your option) any later version.
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8 *
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9 * This program is distributed in the hope that it will be useful,
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10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 * GNU General Public License for more details.
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13 *
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14 * You should have received a copy of the GNU General Public License
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15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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16 */
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17
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18 #ifndef OCTAVELINK_H
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19 #define OCTAVELINK_H
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20
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21 // Octave includes
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22 #undef PACKAGE_BUGREPORT
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23 #undef PACKAGE_NAME
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24 #undef PACKAGE_STRING
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25 #undef PACKAGE_TARNAME
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26 #undef PACKAGE_VERSION
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27 #undef PACKAGE_URL
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28 #include "octave/config.h"
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29 #include "octave/cmd-edit.h"
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30 #include "octave/error.h"
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31 #include "octave/file-io.h"
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32 #include "octave/input.h"
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33 #include "octave/lex.h"
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34 #include "octave/load-path.h"
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35 #include "octave/octave.h"
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36 #include "octave/oct-hist.h"
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37 #include "octave/oct-map.h"
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38 #include "octave/oct-obj.h"
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39 #include "octave/ops.h"
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40 #include "octave/ov.h"
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41 #include "octave/ov-usr-fcn.h"
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42 #include "octave/symtab.h"
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43 #include "octave/pt.h"
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44 #include "octave/pt-eval.h"
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45 #include "octave/config.h"
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46 #include "octave/Range.h"
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47 #include "octave/toplev.h"
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48 #include "octave/procstream.h"
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49 #include "octave/sighandlers.h"
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50 #include "octave/debug.h"
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51 #include "octave/sysdep.h"
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52 #include "octave/ov.h"
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53 #include "octave/unwind-prot.h"
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54 #include "octave/utils.h"
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55 #include "octave/variables.h"
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56 #include "oct-mutex.h"
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57
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58 // Standard includes
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59 #include <iostream>
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60 #include <string>
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61 #include <vector>
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62 #include <readline/readline.h>
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63 #include <queue>
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64 #include <time.h>
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65
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66 #include "octave-main-thread.h"
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67 #include "octave-event.h"
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68 #include "octave-event-observer.h"
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69 #include "octave-event-listener.h"
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70
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71 /**
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72 * \class OctaveLink
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73 * \brief Provides threadsafe access to octave.
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74 * \author Jacob Dawid
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75 * This class is a wrapper around octave and provides threadsafety by
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76 * buffering access operations to octave and executing them in the readline
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77 * event hook, which lives in the octave thread.
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78 */
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79 class octave_link : public octave_event_observer
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80 {
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81 public:
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82 /** Provides a way to access the unique octave_link object. */
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83 static octave_link * instance () { return &_singleton; }
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84
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85 typedef struct
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86 {
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87 clock_t generate_events_start;
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88 clock_t generate_events_stop;
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89 clock_t process_events_start;
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90 clock_t process_events_stop;
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91 int event_queue_size;
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92 } performance_information;
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93
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94 /** Starts octave. */
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95 void launch_octave ();
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96 void register_event_listener (octave_event_listener *oel);
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97
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98 void generate_events ();
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99 void process_events ();
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100 void post_event (octave_event *e);
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101 void event_accepted (octave_event *e);
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102 void event_reject (octave_event *e);
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103
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104 void about_to_exit ();
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105
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106 void entered_readline_hook ();
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107 void finished_readline_hook ();
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108 performance_information get_performance_information ();
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109
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110 private:
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111 /** Singleton. */
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112 octave_link ();
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113 ~octave_link ();
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114
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115 octave_event_listener *_octave_event_listener;
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116
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117 /** Thread running octave_main. */
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118 octave_main_thread *_octave_main_thread;
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119
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120 /** Semaphore to lock access to the event queue. */
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121 octave_mutex *_event_queue_mutex;
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122
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123 /** Buffer for queueing events until they will be processed. */
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124 std::queue <octave_event *> _event_queue;
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125
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126 /** Stores the last known current working directory of octave. */
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127 std::string _last_working_directory;
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128 bool _debugging_mode_active;
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129
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130 /** Semaphore to lock access to the performance information. */
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131 octave_mutex *_performance_information_mutex;
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132
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133 /** Stores performance data. */
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134 performance_information _next_performance_information;
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135 performance_information _performance_information;
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136
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137 /** Unique instance. Singelton! */
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138 static octave_link _singleton;
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139 };
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140 #endif // OCTAVELINK_H