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123 lines
2.7 KiB
C
123 lines
2.7 KiB
C
/*
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* Copyright (C) 2019 Freie Universität Berlin
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup pkg_tlsf_malloc
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* @ingroup pkg
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* @ingroup sys
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* @{
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* @file
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*
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* @brief Definitions to use tlsf as malloc on native.
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* @author Juan I Carrano
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*
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* This assumes glibc is being used.
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* see: https://www.gnu.org/software/libc/manual/html_node/Replacing-malloc.html
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*
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*/
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#include <string.h>
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#include <errno.h>
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#include "irq.h"
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#include "tlsf.h"
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#include "tlsf-malloc.h"
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#include "tlsf-malloc-internal.h"
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/* TODO: Add defines for other compilers */
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#if defined(__GNUC__) && !defined(__clang__) /* Clang supports __GNUC__ but
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* not the alloc_size()
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* attribute */
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#define ATTR_MALLOC __attribute__((malloc, alloc_size(1)))
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#define ATTR_CALLOC __attribute__((malloc, alloc_size(1,2)))
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#define ATTR_MALIGN __attribute__((alloc_align(1), alloc_size(2), malloc))
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#define ATTR_REALLOC __attribute__((alloc_size(2)))
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#else /* No GNU C -> no alias attribute */
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#define ATTR_MALLOC
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#define ATTR_CALLOC
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#define ATTR_MALIGN
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#define ATTR_REALLOC
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#endif /* __GNUC__ */
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extern tlsf_t tlsf_malloc_gheap;
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/**
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* Allocate a block of size "bytes"
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*/
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ATTR_MALLOC void *malloc(size_t bytes)
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{
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unsigned old_state = irq_disable();
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void *result = tlsf_malloc(tlsf_malloc_gheap, bytes);
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if (result == NULL) {
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errno = ENOMEM;
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}
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irq_restore(old_state);
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return result;
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}
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/**
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* Allocate and clear a block of size "bytes*count"
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*/
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ATTR_CALLOC void *calloc(size_t count, size_t bytes)
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{
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void *result = malloc(count * bytes);
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if (result != NULL) {
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memset(result, 0, count * bytes);
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}
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return result;
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}
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/**
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* Allocate an aligned memory block.
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*/
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ATTR_MALIGN void *memalign(size_t align, size_t bytes)
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{
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unsigned old_state = irq_disable();
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void *result = tlsf_memalign(tlsf_malloc_gheap, align, bytes);
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if (result == NULL) {
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errno = ENOMEM;
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}
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irq_restore(old_state);
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return result;
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}
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/**
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* Deallocate and reallocate with a different size.
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*/
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ATTR_REALLOC void *realloc(void *ptr, size_t size)
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{
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unsigned old_state = irq_disable();
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void *result = tlsf_realloc(tlsf_malloc_gheap, ptr, size);
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if (result == NULL) {
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errno = ENOMEM;
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}
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irq_restore(old_state);
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return result;
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}
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/**
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* Deallocate a block of data.
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*/
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void free(void *ptr)
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{
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unsigned old_state = irq_disable();
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tlsf_free(tlsf_malloc_gheap, ptr);
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irq_restore(old_state);
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}
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