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annotate liboctave/util/oct-refcount.h @ 17822:ebb3ef964372

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maint: Use common #define syntax "octave_filename_h" in h_files. * libgui/src/dialog.h, libgui/src/find-files-dialog.h, libgui/src/find-files-model.h, libgui/src/m-editor/file-editor-tab.h, libgui/src/m-editor/octave-qscintilla.h, libgui/src/main-window.h, libgui/src/octave-dock-widget.h, libgui/src/workspace-model.h, libgui/src/workspace-view.h, libinterp/corefcn/Cell.h, libinterp/corefcn/gl-render.h, libinterp/corefcn/gl2ps-renderer.h, libinterp/corefcn/graphics.in.h, libinterp/corefcn/oct-errno.h, libinterp/corefcn/oct-fstrm.h, libinterp/corefcn/oct-handle.h, libinterp/corefcn/oct-hdf5.h, libinterp/corefcn/oct-hist.h, libinterp/corefcn/oct-iostrm.h, libinterp/corefcn/oct-lvalue.h, libinterp/corefcn/oct-prcstrm.h, libinterp/corefcn/oct-procbuf.h, libinterp/corefcn/oct-stdstrm.h, libinterp/corefcn/oct-stream.h, libinterp/corefcn/oct-strstrm.h, libinterp/corefcn/octave-link.h, libinterp/corefcn/pt-jit.h, libinterp/octave-value/ov-base-diag.h, libinterp/octave-value/ov-base-int.h, libinterp/octave-value/ov-base-mat.h, libinterp/octave-value/ov-base-scalar.h, libinterp/octave-value/ov-base-sparse.h, libinterp/octave-value/ov-base.h, libinterp/octave-value/ov-bool-mat.h, libinterp/octave-value/ov-bool-sparse.h, libinterp/octave-value/ov-bool.h, libinterp/octave-value/ov-builtin.h, libinterp/octave-value/ov-cell.h, libinterp/octave-value/ov-ch-mat.h, libinterp/octave-value/ov-class.h, libinterp/octave-value/ov-colon.h, libinterp/octave-value/ov-complex.h, libinterp/octave-value/ov-cs-list.h, libinterp/octave-value/ov-cx-diag.h, libinterp/octave-value/ov-cx-mat.h, libinterp/octave-value/ov-cx-sparse.h, libinterp/octave-value/ov-dld-fcn.h, libinterp/octave-value/ov-fcn-handle.h, libinterp/octave-value/ov-fcn-inline.h, libinterp/octave-value/ov-fcn.h, libinterp/octave-value/ov-float.h, libinterp/octave-value/ov-flt-complex.h, libinterp/octave-value/ov-flt-cx-diag.h, libinterp/octave-value/ov-flt-cx-mat.h, libinterp/octave-value/ov-flt-re-diag.h, libinterp/octave-value/ov-flt-re-mat.h, libinterp/octave-value/ov-int-traits.h, libinterp/octave-value/ov-int16.h, libinterp/octave-value/ov-int32.h, libinterp/octave-value/ov-int64.h, libinterp/octave-value/ov-int8.h, libinterp/octave-value/ov-java.h, libinterp/octave-value/ov-lazy-idx.h, libinterp/octave-value/ov-mex-fcn.h, libinterp/octave-value/ov-null-mat.h, libinterp/octave-value/ov-perm.h, libinterp/octave-value/ov-range.h, libinterp/octave-value/ov-re-diag.h, libinterp/octave-value/ov-re-mat.h, libinterp/octave-value/ov-re-sparse.h, libinterp/octave-value/ov-scalar.h, libinterp/octave-value/ov-str-mat.h, libinterp/octave-value/ov-struct.h, libinterp/octave-value/ov-typeinfo.h, libinterp/octave-value/ov-uint16.h, libinterp/octave-value/ov-uint32.h, libinterp/octave-value/ov-uint64.h, libinterp/octave-value/ov-uint8.h, libinterp/octave-value/ov-usr-fcn.h, libinterp/octave-value/ov.h, libinterp/parse-tree/pt-all.h, libinterp/parse-tree/pt-arg-list.h, libinterp/parse-tree/pt-array-list.h, libinterp/parse-tree/pt-assign.h, libinterp/parse-tree/pt-binop.h, libinterp/parse-tree/pt-bp.h, libinterp/parse-tree/pt-cbinop.h, libinterp/parse-tree/pt-cell.h, libinterp/parse-tree/pt-check.h, libinterp/parse-tree/pt-cmd.h, libinterp/parse-tree/pt-colon.h, libinterp/parse-tree/pt-const.h, libinterp/parse-tree/pt-decl.h, libinterp/parse-tree/pt-eval.h, libinterp/parse-tree/pt-except.h, libinterp/parse-tree/pt-exp.h, libinterp/parse-tree/pt-fcn-handle.h, libinterp/parse-tree/pt-id.h, libinterp/parse-tree/pt-idx.h, libinterp/parse-tree/pt-jump.h, libinterp/parse-tree/pt-loop.h, libinterp/parse-tree/pt-mat.h, libinterp/parse-tree/pt-misc.h, libinterp/parse-tree/pt-pr-code.h, libinterp/parse-tree/pt-select.h, libinterp/parse-tree/pt-stmt.h, libinterp/parse-tree/pt-unop.h, libinterp/parse-tree/pt-walk.h, libinterp/parse-tree/pt.h, liboctave/array/CColVector.h, liboctave/array/CDiagMatrix.h, liboctave/array/CMatrix.h, liboctave/array/CNDArray.h, liboctave/array/CRowVector.h, liboctave/array/boolMatrix.h, liboctave/array/chMatrix.h, liboctave/array/chNDArray.h, liboctave/array/dColVector.h, liboctave/array/dDiagMatrix.h, liboctave/array/dMatrix.h, liboctave/array/dNDArray.h, liboctave/array/dRowVector.h, liboctave/array/fCColVector.h, liboctave/array/fCDiagMatrix.h, liboctave/array/fCMatrix.h, liboctave/array/fCNDArray.h, liboctave/array/fCRowVector.h, liboctave/array/fColVector.h, liboctave/array/fDiagMatrix.h, liboctave/array/fMatrix.h, liboctave/array/fNDArray.h, liboctave/array/fRowVector.h, liboctave/cruft/misc/lo-error.h, liboctave/numeric/CmplxAEPBAL.h, liboctave/numeric/CmplxCHOL.h, liboctave/numeric/CmplxGEPBAL.h, liboctave/numeric/CmplxHESS.h, liboctave/numeric/CmplxLU.h, liboctave/numeric/CmplxQR.h, liboctave/numeric/CmplxQRP.h, liboctave/numeric/CmplxSCHUR.h, liboctave/numeric/CmplxSVD.h, liboctave/numeric/Quad.h, liboctave/numeric/SparseCmplxCHOL.h, liboctave/numeric/SparseCmplxLU.h, liboctave/numeric/SparseCmplxQR.h, liboctave/numeric/SparseQR.h, liboctave/numeric/SparsedbleCHOL.h, liboctave/numeric/SparsedbleLU.h, liboctave/numeric/bsxfun.h, liboctave/numeric/dbleAEPBAL.h, liboctave/numeric/dbleCHOL.h, liboctave/numeric/dbleGEPBAL.h, liboctave/numeric/dbleHESS.h, liboctave/numeric/dbleLU.h, liboctave/numeric/dbleQR.h, liboctave/numeric/dbleQRP.h, liboctave/numeric/dbleSCHUR.h, liboctave/numeric/dbleSVD.h, liboctave/numeric/fCmplxAEPBAL.h, liboctave/numeric/fCmplxCHOL.h, liboctave/numeric/fCmplxGEPBAL.h, liboctave/numeric/fCmplxHESS.h, liboctave/numeric/fCmplxLU.h, liboctave/numeric/fCmplxQR.h, liboctave/numeric/fCmplxQRP.h, liboctave/numeric/fCmplxSCHUR.h, liboctave/numeric/fCmplxSVD.h, liboctave/numeric/fEIG.h, liboctave/numeric/floatAEPBAL.h, liboctave/numeric/floatCHOL.h, liboctave/numeric/floatGEPBAL.h, liboctave/numeric/floatHESS.h, liboctave/numeric/floatLU.h, liboctave/numeric/floatQR.h, liboctave/numeric/floatQRP.h, liboctave/numeric/floatSCHUR.h, liboctave/numeric/floatSVD.h, liboctave/numeric/lo-mappers.h, liboctave/numeric/lo-specfun.h, liboctave/numeric/oct-convn.h, liboctave/numeric/oct-norm.h, liboctave/numeric/oct-rand.h, liboctave/operators/Sparse-diag-op-defs.h, liboctave/operators/Sparse-op-defs.h, liboctave/operators/Sparse-perm-op-defs.h, liboctave/system/lo-sysdep.h, liboctave/system/oct-env.h, liboctave/system/oct-group.h, liboctave/system/oct-openmp.h, liboctave/system/oct-passwd.h, liboctave/system/oct-syscalls.h, liboctave/system/oct-time.h, liboctave/system/oct-uname.h, liboctave/util/lo-array-gripes.h, liboctave/util/lo-cutils.h, liboctave/util/lo-ieee.h, liboctave/util/lo-macros.h, liboctave/util/lo-math.h, liboctave/util/lo-regexp.h, liboctave/util/lo-traits.h, liboctave/util/lo-utils.h, liboctave/util/oct-base64.h, liboctave/util/oct-binmap.h, liboctave/util/oct-glob.h, liboctave/util/oct-inttypes.h, liboctave/util/oct-locbuf.h, liboctave/util/oct-mem.h, liboctave/util/oct-mutex.h, liboctave/util/oct-refcount.h, liboctave/util/oct-rl-edit.h, liboctave/util/oct-rl-hist.h, liboctave/util/oct-shlib.h, liboctave/util/oct-sort.h, liboctave/util/oct-sparse.h: Use common #define syntax "octave_filename_h" in h_files.
author Rik <rik@octave.org>
date Thu, 31 Oct 2013 22:19:07 -0700
parents 49a5a4be04a1
children 4197fc428c7d
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1 /*
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2
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3 Copyright (C) 2012-2013 Jaroslav Hajek
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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 3 of the License, or (at your
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10 option) any 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, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #if !defined (octave_oct_refcount_h)
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24 #define octave_oct_refcount_h 1
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26 #ifndef OCTAVE_CONFIG_INCLUDED
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27 # error "The file <octave/config.h> must be included before oct-refcount.h."
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28 #endif
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29
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30 #if defined (USE_ATOMIC_REFCOUNT) && (defined (_MSC_VER) || defined (__GNUC__))
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31 # if defined (_MSC_VER)
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32 # include <intrin.h>
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33 # define OCTREFCOUNT_ATOMIC_INCREMENT(x) _InterlockedIncrement((long*)x)
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34 # define OCTREFCOUNT_ATOMIC_DECREMENT(x) _InterlockedDecrement((long*)x)
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35 # define OCTREFCOUNT_ATOMIC_INCREMENT_POST(x) _InterlockedExchangeAdd((long*)x, 1)
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36 # define OCTREFCOUNT_ATOMIC_DECREMENT_POST(x) _InterlockedExchangeAdd((long*)x, -1)
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37 # elif defined (__GNUC__)
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38 # define OCTREFCOUNT_ATOMIC_INCREMENT(x) __sync_add_and_fetch(x, 1)
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39 # define OCTREFCOUNT_ATOMIC_DECREMENT(x) __sync_add_and_fetch(x, -1)
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40 # define OCTREFCOUNT_ATOMIC_INCREMENT_POST(x) __sync_fetch_and_add(x, 1)
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41 # define OCTREFCOUNT_ATOMIC_DECREMENT_POST(x) __sync_fetch_and_add(x, -1)
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42 # endif
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43 #else // Generic non-locking versions
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44 # define OCTREFCOUNT_ATOMIC_INCREMENT(x) ++(*(x))
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45 # define OCTREFCOUNT_ATOMIC_DECREMENT(x) --(*(x))
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46 # define OCTREFCOUNT_ATOMIC_INCREMENT_POST(x) (*(x))++
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47 # define OCTREFCOUNT_ATOMIC_DECREMENT_POST(x) (*(x))--
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48 #endif
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49
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50 // Encapsulates a reference counter.
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51 template <class T>
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52 class octave_refcount
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53 {
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54 public:
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55 typedef T count_type;
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56
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57 octave_refcount(count_type initial_count) : count(initial_count) { }
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58
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59 // Increment/Decrement. int is postfix.
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60 count_type operator++(void)
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61 {
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62 return OCTREFCOUNT_ATOMIC_INCREMENT (&count);
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63 }
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64
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65 count_type operator++(int)
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66 {
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67 return OCTREFCOUNT_ATOMIC_INCREMENT_POST (&count);
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68 }
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70 count_type operator--(void)
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71 {
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72 return OCTREFCOUNT_ATOMIC_DECREMENT (&count);
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73 }
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75 count_type operator--(int)
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76 {
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77 return OCTREFCOUNT_ATOMIC_DECREMENT_POST (&count);
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78 }
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79
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80 operator count_type (void) const
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81 {
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82 return static_cast<count_type const volatile&> (count);
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83 }
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84
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85 count_type *get (void)
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86 {
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87 return &count;
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88 }
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89
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90 private:
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91 count_type count;
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92 };
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93
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94 #endif