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1 /* |
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2 |
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3 Copyright (C) 1999 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, write to the Free |
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19 Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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20 02110-1301, USA. |
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21 |
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22 */ |
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23 |
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24 #if !defined (octave_shlib_h) |
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25 #define octave_shlib_h 1 |
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26 |
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27 #include <string> |
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28 |
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29 #include "oct-time.h" |
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30 |
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31 // This just provides a way to avoid infinite recursion when building |
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32 // octave_shlib objects. |
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33 |
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34 class |
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35 OCTAVE_API |
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36 octave_xshlib |
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37 { |
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38 public: |
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39 |
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40 octave_xshlib (void) { } |
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41 }; |
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42 |
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43 class |
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44 OCTAVE_API |
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45 octave_shlib |
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46 { |
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47 public: |
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48 |
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49 typedef std::string (*name_mangler) (const std::string&); |
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50 |
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51 typedef void (*close_hook) (const std::string&); |
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52 |
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53 octave_shlib (void) : relative (false), rep (make_shlib ()) { } |
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54 |
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55 octave_shlib (const std::string& f) |
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56 : relative (false), rep (make_shlib ()) { open (f); } |
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57 |
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58 virtual ~octave_shlib (void) |
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59 { |
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60 if (rep && --rep->count == 0) |
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61 { |
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62 delete rep; |
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63 rep = 0; |
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64 } |
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65 } |
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66 |
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67 octave_shlib (const octave_shlib& sl) |
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68 { |
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69 rep = sl.rep; |
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70 rep->count++; |
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71 } |
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72 |
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73 octave_shlib& operator = (const octave_shlib& sl) |
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74 { |
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75 if (rep != sl.rep) |
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76 { |
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77 if (--rep->count == 0) |
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78 delete rep; |
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79 |
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80 rep = sl.rep; |
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81 rep->count++; |
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82 } |
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83 |
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84 return *this; |
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85 } |
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86 |
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87 bool operator == (const octave_shlib& sl) const |
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88 { return (rep == sl.rep); } |
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89 |
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90 operator bool () const { return is_open (); } |
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91 |
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92 virtual void open (const std::string& f) { rep->open (f); } |
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93 |
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94 virtual void *search (const std::string& nm, name_mangler mangler = 0) |
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95 { return rep->search (nm, mangler); } |
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96 |
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97 virtual void close (close_hook cl_hook = 0) |
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98 { rep->close (cl_hook); } |
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99 |
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100 virtual bool remove (const std::string& fcn_name) |
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101 { return rep->remove (fcn_name); } |
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102 |
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103 virtual bool is_out_of_date (void) const |
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104 { return rep->is_out_of_date (); } |
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105 |
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106 void mark_relative (void) { relative = true; } |
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107 |
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108 bool is_relative (void) const { return relative; } |
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109 |
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110 virtual int number_of_functions_loaded (void) const |
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111 { return rep->number_of_functions_loaded (); } |
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112 |
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113 virtual std::string file_name (void) const |
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114 { return rep->file_name (); } |
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115 |
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116 virtual octave_time time_loaded (void) const |
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117 { return rep->time_loaded (); } |
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118 |
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119 protected: |
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120 |
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121 octave_shlib (const octave_xshlib&) : rep (0) { } |
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122 |
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123 virtual bool is_open (void) const { return rep->is_open (); } |
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124 |
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125 static octave_shlib *make_shlib (void); |
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126 |
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127 // TRUE if this function was found from a relative path element. |
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128 bool relative; |
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129 |
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130 union |
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131 { |
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132 octave_shlib *rep; |
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133 int count; |
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134 }; |
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135 }; |
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136 |
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137 #endif |
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138 |
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139 /* |
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140 ;;; Local Variables: *** |
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141 ;;; mode: C++ *** |
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142 ;;; End: *** |
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143 */ |
