83 lines
2.0 KiB
C++
83 lines
2.0 KiB
C++
/*
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* Copyright (C) 2003-2013 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) 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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPD_HUGE_ALLOCATOR_HXX
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#define MPD_HUGE_ALLOCATOR_HXX
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#include "gcc.h"
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#include <stddef.h>
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#ifdef __linux__
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/**
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* Allocate a huge amount of memory. This will be done in a way that
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* allows giving the memory back to the kernel as soon as we don't
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* need it anymore. On the downside, this call is expensive.
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*/
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gcc_malloc
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void *
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HugeAllocate(size_t size);
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/**
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* @param p an allocation returned by HugeAllocate()
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* @param size the allocation's size as passed to HugeAllocate()
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*/
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void
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HugeFree(void *p, size_t size);
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/**
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* Discard any data stored in the allocation and give the memory back
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* to the kernel. After returning, the allocation still exists and
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* can be reused at any time, but its contents are undefined.
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*
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* @param p an allocation returned by HugeAllocate()
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* @param size the allocation's size as passed to HugeAllocate()
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*/
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void
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HugeDiscard(void *p, size_t size);
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#else
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/* not Linux: fall back to standard C calls */
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#include <stdlib.h>
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gcc_malloc
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static inline void *
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HugeAllocate(size_t size)
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{
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return malloc(size);
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}
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static inline void
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HugeFree(void *p, size_t)
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{
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free(p);
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}
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static inline void
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HugeDiscard(void *, size_t)
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{
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}
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#endif
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#endif
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