Mercurial > octave
annotate libinterp/corefcn/event-queue.h @ 22869:f75d289645ec
make deleted functions public
* octave-gui.h, resource-manager.h, shortcut-manager.h,
base-text-renderer.h, c-file-ptr-stream.h, dynamic-ld.cc,
dynamic-ld.h, event-queue.h, ft-text-renderer.cc, gl-render.cc,
gl-render.h, graphics.cc, graphics.in.h, interpreter.h, mex.cc,
mxarray.in.h, oct-fstrm.h, oct-iostrm.h, oct-prcstrm.h,
oct-procbuf.h, oct-stdstrm.h, oct-stream.cc, oct-stream.h,
oct-strstrm.h, octave-link.h, pager.h, profiler.h, sighandlers.cc,
symtab.h, text-renderer.h, zfstream.h, __init_fltk__.cc,
ov-builtin.h, ov-dld-fcn.h, ov-fcn.h, ov-mex-fcn.h, ov-typeinfo.h,
ov-usr-fcn.h, octave.h, lex.h, parse.h, pt-arg-list.h,
pt-array-list.h, pt-assign.h, pt-binop.h, pt-bp.h, pt-cell.h,
pt-check.h, pt-classdef.h, pt-cmd.h, pt-colon.h, pt-const.h,
pt-decl.h, pt-eval.h, pt-except.h, pt-exp.h, pt-fcn-handle.h,
pt-funcall.h, pt-id.h, pt-idx.h, pt-jump.h, pt-loop.h, pt-mat.h,
pt-misc.h, pt-pr-code.h, pt-select.h, pt-stmt.h, pt-unop.h,
pt-walk.h, pt.h, token.h, Array.cc, idx-vector.h, oct-fftw.h,
sparse-chol.cc, sparse-qr.cc, file-ops.h, mach-info.h, oct-env.h,
action-container.h, cmd-edit.cc, cmd-edit.h, cmd-hist.h,
oct-locbuf.h, oct-mutex.h, oct-shlib.cc, oct-sort.h, pathsearch.h,
singleton-cleanup.h, unwind-prot.h, url-transfer.cc, url-transfer.h:
Declare deleted copy constructors and assignment operators public.
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Tue, 06 Dec 2016 12:40:45 -0500 |
| parents | 89756f2f085b |
| children | ef4d915df748 |
| rev | line source |
|---|---|
| 15396 | 1 /* |
| 2 | |
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3 Copyright (C) 2012-2016 John W. Eaton |
| 15396 | 4 |
| 5 This file is part of Octave. | |
| 6 | |
| 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 |
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9 the Free Software Foundation; either version 3 of the License, or |
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10 (at your option) any later version. |
| 15396 | 11 |
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12 Octave is distributed in the hope that it will be useful, but |
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13 WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 GNU General Public License for more details. |
| 15396 | 16 |
| 17 You should have received a copy of the GNU General Public License | |
| 18 along with Octave; see the file COPYING. If not, see | |
| 19 <http://www.gnu.org/licenses/>. | |
| 20 | |
| 21 */ | |
| 22 | |
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23 #if ! defined (octave_event_queue_h) |
| 15396 | 24 #define octave_event_queue_h 1 |
| 25 | |
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26 #include "octave-config.h" |
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27 |
| 15396 | 28 #include <queue> |
| 29 #include <memory> | |
| 30 | |
| 31 #include "action-container.h" | |
| 32 | |
| 33 class | |
| 34 event_queue : public action_container | |
| 35 { | |
| 36 public: | |
| 37 | |
| 38 event_queue (void) : fifo () { } | |
| 39 | |
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40 // No copying! |
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41 |
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42 event_queue (const event_queue&) = delete; |
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43 |
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44 event_queue& operator = (const event_queue&) = delete; |
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45 |
| 15396 | 46 // Destructor should not raise an exception, so all actions |
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47 // registered should be exception-safe. If you're not sure, see |
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48 // event_queue_safe. |
| 15396 | 49 |
| 50 ~event_queue (void) { run (); } | |
| 51 | |
| 52 void add (elem *new_elem) | |
| 53 { | |
| 54 fifo.push (new_elem); | |
| 55 } | |
| 56 | |
| 57 void run_first (void) | |
| 58 { | |
| 59 if (! empty ()) | |
| 60 { | |
| 61 // No leak on exception! | |
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62 std::unique_ptr<elem> ptr (fifo.front ()); |
| 15396 | 63 fifo.pop (); |
| 64 ptr->run (); | |
| 65 } | |
| 66 } | |
| 67 | |
| 68 void discard_first (void) | |
| 69 { | |
| 70 if (! empty ()) | |
| 71 { | |
| 72 elem *ptr = fifo.front (); | |
| 73 fifo.pop (); | |
| 74 delete ptr; | |
| 75 } | |
| 76 } | |
| 77 | |
| 78 size_t size (void) const { return fifo.size (); } | |
| 79 | |
| 80 protected: | |
| 81 | |
| 82 std::queue<elem *> fifo; | |
| 83 }; | |
| 84 | |
| 85 // Like event_queue, but this one will guard against the | |
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86 // possibility of seeing an exception (or interrupt) in the cleanup actions. |
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87 // Not that we can do much about it, but at least we won't crash. |
| 15396 | 88 |
| 89 class | |
| 90 event_queue_safe : public event_queue | |
| 91 { | |
| 92 private: | |
| 93 | |
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94 void warn_unhandled_exception (void) const; |
| 15396 | 95 |
| 96 public: | |
| 97 | |
| 98 event_queue_safe (void) : event_queue () { } | |
| 99 | |
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100 // No copying! |
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101 |
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102 event_queue_safe (const event_queue_safe&) = delete; |
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103 |
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104 event_queue_safe& operator = (const event_queue_safe&) = delete; |
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105 |
| 15396 | 106 ~event_queue_safe (void) |
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107 { |
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108 while (! empty ()) |
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109 { |
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110 try |
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111 { |
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112 run_first (); |
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113 } |
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114 catch (...) // Yes, the black hole. Remember we're in a dtor. |
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115 { |
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116 warn_unhandled_exception (); |
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117 } |
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118 } |
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119 } |
| 15396 | 120 }; |
| 121 | |
| 122 #endif | |
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123 |