mirror of https://github.com/dzavalishin/oskit/
63 lines
1.9 KiB
C
Executable File
63 lines
1.9 KiB
C
Executable File
/*
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* Copyright (c) 2000 University of Utah and the Flux Group.
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* All rights reserved.
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*
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* This file is part of the Flux OSKit. The OSKit is free software, also known
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* as "open source;" you can redistribute it and/or modify it under the terms
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* of the GNU General Public License (GPL), version 2, as published by the Free
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* Software Foundation (FSF). To explore alternate licensing terms, contact
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* the University of Utah at csl-dist@cs.utah.edu or +1-801-585-3271.
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*
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* The OSKit 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 GPL for more details. You should have
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* received a copy of the GPL along with the OSKit; see the file COPYING. If
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* not, write to the FSF, 59 Temple Place #330, Boston, MA 02111-1307, USA.
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*/
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/*
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* Standard C malloc functions built on top of lmm but exposing the lmm
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* flags.
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* Keeps track of the size of the object for you.
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*
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* Can be combined with various lmm adaptors to get thread-safety,
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* caching, etc.
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*/
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#include <oskit/c/malloc.h>
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#include <oskit/lmm.h>
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#include <knit/c/lmm.h>
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#include <string.h>
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#include "bitops.h"
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void *malloc_flags(size_t size, lmm_flags_t flags)
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{
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oskit_size_t *chunk;
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chunk = in_alloc(size + sizeof(oskit_size_t), flags);
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if (chunk)
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*chunk++ = size;
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return chunk;
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}
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void *memalign_flags(size_t alignment, size_t size, lmm_flags_t flags)
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{
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unsigned int shift = log2(alignment);
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oskit_size_t *chunk;
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chunk = in_alloc_aligned(size, flags, shift, (1 << shift) - sizeof(oskit_size_t));
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if (chunk)
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*chunk++ = size;
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return chunk;
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}
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void free_flags(void *chunk)
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{
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oskit_size_t size;
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/* Posix says free of NULL does nothing */
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if (! chunk)
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return;
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(oskit_size_t*)chunk -= 1;
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size = *((oskit_size_t*)chunk);
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in_free(chunk, size + sizeof(oskit_size_t));
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}
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