Added a Refcounted class, useful for refcounted objects.
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@ -95,6 +95,7 @@ vgaterminal.o \
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serialterminal.o \
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serialterminal.o \
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descriptors.o \
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descriptors.o \
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device.o \
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device.o \
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refcount.o \
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vga.o \
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vga.o \
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elf.o \
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elf.o \
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process.o \
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process.o \
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@ -0,0 +1,52 @@
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/*******************************************************************************
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COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2012.
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This file is part of Sortix.
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Sortix is free software: you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later
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version.
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Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along with
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Sortix. If not, see <http://www.gnu.org/licenses/>.
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refcount.cpp
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A class that implements reference counting.
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*******************************************************************************/
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#include "platform.h"
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#include "refcount.h"
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namespace Sortix
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{
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Refcounted::Refcounted()
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{
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refcount = 1;
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}
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Refcounted::~Refcounted()
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{
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// It's OK to be deleted if our refcount is 1, it won't mess with any
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// other owners that might need us.
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ASSERT(refcount <= 1);
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}
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void Refcounted::Refer()
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{
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refcount++;
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}
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void Refcounted::Unref()
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{
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if ( !--refcount ) { delete this; }
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}
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}
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@ -0,0 +1,47 @@
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/*******************************************************************************
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COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2012.
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This file is part of Sortix.
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Sortix is free software: you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later
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version.
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Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along with
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Sortix. If not, see <http://www.gnu.org/licenses/>.
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refcount.h
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A class that implements reference counting.
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*******************************************************************************/
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#ifndef SORTIX_REFCOUNT_H
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#define SORTIX_REFCOUNT_H
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namespace Sortix
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{
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class Refcounted
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{
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public:
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Refcounted();
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~Refcounted();
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public:
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void Refer();
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void Unref();
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private:
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size_t refcount;
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};
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}
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#endif
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