Mercurial > jwe > octave
view liboctave/util/oct-refcount.h @ 20945:9d9270e2f98f
eliminate comments after preprocessor conditionals
* annotation-dialog.h, gl-select.h, documentation-dock-widget.h,
files-dock-widget.h, find-files-dialog.h, find-files-model.h,
history-dock-widget.h, file-editor-interface.h, file-editor.h,
find-dialog.h, main-window.h, resource-manager.h, settings-dialog.h,
shortcut-manager.h, terminal-dock-widget.h, welcome-wizard.h,
defun-int.h, gl2ps-renderer.h, load-save.cc, ls-hdf5.cc, ls-mat5.cc,
octave-link.h, sighandlers.cc, txt-eng-ft.cc, txt-eng-ft.h,
zfstream.cc, zfstream.h, ov-cx-mat.cc, ov-cx-sparse.cc,
ov-flt-cx-mat.cc, ov-flt-re-mat.cc, ov-java.cc, ov-re-mat.cc,
ov-re-sparse.cc, Sparse-diag-op-defs.h, Sparse-perm-op-defs.h,
oct-env.cc, oct-refcount.h, sparse-util.cc, statdefs.h, main.in.cc:
Eliminate comments after preprocessor conditionals.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Fri, 18 Dec 2015 22:06:22 -0500 |
parents | f7084eae3318 |
children | 54527108599a |
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/* Copyright (C) 2012-2015 Jaroslav Hajek This file is part of Octave. Octave is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. Octave is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with Octave; see the file COPYING. If not, see <http://www.gnu.org/licenses/>. */ #if ! defined (octave_oct_refcount_h) #define octave_oct_refcount_h 1 #ifndef OCTAVE_CONFIG_INCLUDED # error "The file <octave/config.h> must be included before oct-refcount.h." #endif #if defined (USE_ATOMIC_REFCOUNT) && (defined (_MSC_VER) || defined (__GNUC__)) # if defined (_MSC_VER) # include <intrin.h> # define OCTREFCOUNT_ATOMIC_INCREMENT(x) _InterlockedIncrement((long*)x) # define OCTREFCOUNT_ATOMIC_DECREMENT(x) _InterlockedDecrement((long*)x) # define OCTREFCOUNT_ATOMIC_INCREMENT_POST(x) _InterlockedExchangeAdd((long*)x, 1) # define OCTREFCOUNT_ATOMIC_DECREMENT_POST(x) _InterlockedExchangeAdd((long*)x, -1) # elif defined (__GNUC__) # define OCTREFCOUNT_ATOMIC_INCREMENT(x) __sync_add_and_fetch(x, 1) # define OCTREFCOUNT_ATOMIC_DECREMENT(x) __sync_add_and_fetch(x, -1) # define OCTREFCOUNT_ATOMIC_INCREMENT_POST(x) __sync_fetch_and_add(x, 1) # define OCTREFCOUNT_ATOMIC_DECREMENT_POST(x) __sync_fetch_and_add(x, -1) # endif #else // Generic non-locking versions # define OCTREFCOUNT_ATOMIC_INCREMENT(x) ++(*(x)) # define OCTREFCOUNT_ATOMIC_DECREMENT(x) --(*(x)) # define OCTREFCOUNT_ATOMIC_INCREMENT_POST(x) (*(x))++ # define OCTREFCOUNT_ATOMIC_DECREMENT_POST(x) (*(x))-- #endif // Encapsulates a reference counter. template <class T> class octave_refcount { public: typedef T count_type; octave_refcount(count_type initial_count) : count(initial_count) { } // Increment/Decrement. int is postfix. count_type operator++(void) { return OCTREFCOUNT_ATOMIC_INCREMENT (&count); } count_type operator++(int) { return OCTREFCOUNT_ATOMIC_INCREMENT_POST (&count); } count_type operator--(void) { return OCTREFCOUNT_ATOMIC_DECREMENT (&count); } count_type operator--(int) { return OCTREFCOUNT_ATOMIC_DECREMENT_POST (&count); } operator count_type (void) const { return static_cast<count_type const volatile&> (count); } count_type *get (void) { return &count; } private: count_type count; }; #endif