53 lines
1.5 KiB
C++
53 lines
1.5 KiB
C++
#ifndef IVL_permaheap_H
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#define IVL_permaheap_H
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/*
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* Copyright (c) 2009-2014 Stephen Williams (steve@icarus.com)
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*
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* This source code is free software; you can redistribute it
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* and/or modify it in source code form under the terms of the GNU
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* General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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// The SunPro C++ compiler is broken and does not define size_t in cstddef.
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#ifdef __SUNPRO_CC
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# include <stddef.h>
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#else
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# include <cstddef>
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#endif
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class permaheap {
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public:
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explicit permaheap();
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~permaheap();
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void* alloc(size_t size);
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size_t heap_total() const { return heap_total_; }
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private:
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enum { INITIAL_CHUNK_SIZE = 512*1024, CHUNK_SIZE=256*1024 };
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union {
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void*align;
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char bytes[INITIAL_CHUNK_SIZE];
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} initial_chunk_;
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char*chunk_ptr_;
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size_t chunk_remaining_;
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size_t heap_total_;
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};
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#endif /* IVL_permaheap_H */
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