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1 /* |
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2 |
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3 Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003, 2004, 2005, 2007, 2008 |
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4 John W. Eaton |
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5 |
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6 This file is part of Octave. |
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7 |
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8 Octave is free software; you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by the |
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10 Free Software Foundation; either version 3 of the License, or (at your |
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11 option) any later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but WITHOUT |
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with Octave; see the file COPYING. If not, see |
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20 <http://www.gnu.org/licenses/>. |
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21 |
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22 */ |
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23 |
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24 #ifdef HAVE_CONFIG_H |
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25 #include <config.h> |
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26 #endif |
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27 |
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28 #include "oct-shlib.h" |
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29 |
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30 #include <defaults.h> |
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31 #include "dynamic-ld.h" |
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32 #include "error.h" |
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33 #include "oct-obj.h" |
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34 #include "ov-dld-fcn.h" |
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35 #include "ov.h" |
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36 |
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37 DEFINE_OCTAVE_ALLOCATOR (octave_dld_function); |
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38 |
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39 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_dld_function, |
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40 "dynamically-linked function", |
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41 "dynamically-linked function"); |
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42 |
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43 |
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44 octave_dld_function::octave_dld_function |
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45 (octave_builtin::fcn ff, const octave_shlib& shl, |
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46 const std::string& nm, const std::string& ds) |
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47 : octave_builtin (ff, nm, ds), sh_lib (shl) |
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48 { |
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49 mark_fcn_file_up_to_date (time_parsed ()); |
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50 |
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51 std::string file_name = fcn_file_name (); |
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52 |
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53 system_fcn_file |
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54 = (! file_name.empty () |
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55 && Voct_file_dir == file_name.substr (0, Voct_file_dir.length ())); |
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56 } |
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57 |
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58 octave_dld_function::~octave_dld_function (void) |
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59 { |
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60 octave_dynamic_loader::remove_oct (my_name, sh_lib); |
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61 } |
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62 |
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63 std::string |
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64 octave_dld_function::fcn_file_name (void) const |
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65 { |
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66 return sh_lib.file_name (); |
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67 } |
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68 |
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69 octave_time |
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70 octave_dld_function::time_parsed (void) const |
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71 { |
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72 return sh_lib.time_loaded (); |
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73 } |
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74 |
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75 // Note: this wrapper around the octave_dld_function constructor is |
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76 // necessary to work around a MSVC limitation handling in |
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77 // virtual destructors that prevents unloading a dynamic module |
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78 // before *all* objects (of class using a virtual dtor) have |
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79 // been fully deleted; indeed, MSVC attaches auto-generated code |
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80 // (scalar deleting destructor) to objects created in a dynamic |
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81 // module, and this code will be executed in the dynamic module |
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82 // context at object deletion; unloading the dynamic module |
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83 // before objects have been deleted will make the "delete" code |
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84 // of objects to point to an invalid code segment. |
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85 |
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86 octave_dld_function* |
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87 octave_dld_function::create (octave_builtin::fcn ff, const octave_shlib& shl, |
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88 const std::string& nm, const std::string& ds) |
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89 { |
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90 return new octave_dld_function (ff, shl, nm, ds); |
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91 } |
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92 |
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93 /* |
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94 ;;; Local Variables: *** |
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95 ;;; mode: C++ *** |
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96 ;;; End: *** |
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97 */ |
