From cca66b9ec4e494c1d919bff0f71a820d8afab1fa Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:24:48 +0200 Subject: Adding upstream version 1.2.2. Signed-off-by: Daniel Baumann --- src/inkgc/gc-soft-ptr.h | 70 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 src/inkgc/gc-soft-ptr.h (limited to 'src/inkgc/gc-soft-ptr.h') diff --git a/src/inkgc/gc-soft-ptr.h b/src/inkgc/gc-soft-ptr.h new file mode 100644 index 0000000..b245d81 --- /dev/null +++ b/src/inkgc/gc-soft-ptr.h @@ -0,0 +1,70 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/** @file + * TODO: insert short description here + *//* + * Authors: + * see git history + * MenTaLguY + * + * Copyright (C) 2018 Authors + * Released under GNU GPL v2+, read the file 'COPYING' for more information. + */ + +#ifndef SEEN_INKSCAPE_GC_SOFT_PTR_H +#define SEEN_INKSCAPE_GC_SOFT_PTR_H + +#include "inkgc/gc-core.h" + +namespace Inkscape { + +namespace GC { + +/** + * A class for pointers which can be automatically cleared to break + * finalization cycles. + */ +template +class soft_ptr { +public: + soft_ptr(T *pointer=nullptr) : _pointer(pointer) { + _register(); + } + + operator T *() const { return static_cast(_pointer); } + T &operator*() const { return *static_cast(_pointer); } + T *operator->() const { return static_cast(_pointer); } + T &operator[](int i) const { return static_cast(_pointer)[i]; } + + soft_ptr &operator=(T *pointer) { + _pointer = pointer; + return *this; + } + + // default copy + +private: + void _register() { + void *base=Core::base(this); + if (base) { + Core::general_register_disappearing_link(&_pointer, base); + } + } + + void *_pointer; +}; + +} + +} + +#endif +/* + Local Variables: + mode:c++ + c-file-style:"stroustrup" + c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) + indent-tabs-mode:nil + fill-column:99 + End: +*/ +// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 : -- cgit v1.2.3