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annotate libinterp/corefcn/oct-errno.h @ 33617:ec2635a02328 bytecode-interpreter tip

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maint: Merge default to bytecode-interpreter.
author Markus Mützel <markus.muetzel@gmx.de>
date Tue, 21 May 2024 18:29:03 +0200
parents 4b601ca024d5
children
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 2005-2024 The Octave Project Developers
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4 //
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5 // See the file COPYRIGHT.md in the top-level directory of this
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6 // distribution or <https://octave.org/copyright/>.
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7 //
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8 // This file is part of Octave.
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9 //
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10 // Octave is free software: you can redistribute it and/or modify it
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11 // under the terms of the GNU General Public License as published by
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12 // the Free Software Foundation, either version 3 of the License, or
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13 // (at your option) any later version.
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14 //
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15 // Octave is distributed in the hope that it will be useful, but
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 // GNU General Public License for more details.
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19 //
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20 // You should have received a copy of the GNU General Public License
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21 // along with Octave; see the file COPYING. If not, see
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22 // <https://www.gnu.org/licenses/>.
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23 //
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24 ////////////////////////////////////////////////////////////////////////
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25
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26 #if ! defined (octave_oct_errno_h)
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27 #define octave_oct_errno_h 1
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28
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29 #include "octave-config.h"
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30
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31 #include <cerrno>
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32 #include <map>
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33 #include <string>
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34
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35 #include "oct-map.h"
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36
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37 class octave_errno
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38 {
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39 protected:
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40
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41 octave_errno ();
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42
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43 public:
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44
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45 OCTAVE_DISABLE_COPY_MOVE (octave_errno)
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46
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47 ~octave_errno () = default;
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48
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49 static bool instance_ok ();
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50
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51 static void cleanup_instance ()
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52 { delete s_instance; s_instance = nullptr; }
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53
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54 static int lookup (const std::string& name);
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55
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56 static octave_scalar_map list ();
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57
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58 static int get () { return errno; }
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59
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60 static int set (int val)
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61 {
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62 int retval = errno;
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63 errno = val;
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64 return retval;
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65 }
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66
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67 private:
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68
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69 int do_lookup (const std::string& name);
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70
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71 octave_scalar_map do_list ();
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72
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73 //--------
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74
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75 std::map<std::string, int> m_errno_tbl;
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76
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77 static octave_errno *s_instance;
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78 };
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79
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80 #endif