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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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23 #if !defined (octave_unwind_prot_h) |
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24 #define octave_unwind_prot_h 1 |
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25 |
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26 #if defined (__GNUG__) |
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27 #pragma interface |
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28 #endif |
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29 |
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30 #include <cstddef> |
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31 |
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32 #include <string> |
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33 |
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34 typedef void (*cleanup_func)(void *ptr); |
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35 |
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36 void add_unwind_protect (cleanup_func fptr, void *ptr); |
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37 void run_unwind_protect (void); |
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38 void discard_unwind_protect (void); |
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39 void begin_unwind_frame (const string& tag); |
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40 void run_unwind_frame (const string& tag); |
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41 void discard_unwind_frame (const string& tag); |
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42 void run_all_unwind_protects (void); |
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43 void discard_all_unwind_protects (void); |
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44 |
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45 void unwind_protect_int_internal (int *ptr, int value); |
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46 void unwind_protect_str_internal (string *ptr, const string& value); |
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47 void unwind_protect_ptr_internal (void **ptr, void *value); |
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48 void unwind_protect_var_internal (void *ptr, void *value, size_t size); |
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49 |
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50 #define unwind_protect_int(i) \ |
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51 unwind_protect_int_internal (&(i), (i)) |
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52 |
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53 #define unwind_protect_str(s) \ |
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54 unwind_protect_str_internal (&(s), (s)) |
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55 |
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56 #define unwind_protect_ptr(p) \ |
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57 unwind_protect_ptr_internal (static_cast<void **> (&(p)), \ |
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58 static_cast<void *> (p)) |
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59 |
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60 class |
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61 unwind_elem |
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62 { |
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63 public: |
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64 unwind_elem (void) |
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65 : ue_tag (), ue_fptr (0), ue_ptr (0) { } |
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66 |
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67 unwind_elem (const string &t) |
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68 : ue_tag (t), ue_fptr (0), ue_ptr (0) { } |
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69 |
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70 unwind_elem (cleanup_func f, void *p) |
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71 : ue_tag (), ue_fptr (f), ue_ptr (p) { } |
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72 |
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73 unwind_elem (const unwind_elem& el) |
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74 : ue_tag (el.ue_tag), ue_fptr (el.ue_fptr), ue_ptr (el.ue_ptr) { } |
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75 |
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76 ~unwind_elem (void) { } |
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77 |
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78 unwind_elem& operator = (const unwind_elem& el) |
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79 { |
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80 ue_tag = el.ue_tag; |
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81 ue_fptr = el.ue_fptr; |
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82 ue_ptr = el.ue_ptr; |
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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 string tag (void) { return ue_tag; } |
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88 |
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89 cleanup_func fptr (void) { return ue_fptr; } |
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90 |
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91 void *ptr (void) { return ue_ptr; } |
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92 |
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93 private: |
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94 string ue_tag; |
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95 cleanup_func ue_fptr; |
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96 void *ue_ptr; |
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97 }; |
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98 |
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99 #endif |
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100 |
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101 /* |
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102 ;;; Local Variables: *** |
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103 ;;; mode: C++ *** |
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104 ;;; End: *** |
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105 */ |
