kopia lustrzana https://github.com/espressif/esp-idf
135 wiersze
3.0 KiB
C
135 wiersze
3.0 KiB
C
/*
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* SPDX-FileCopyrightText: 2015-2024 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <string.h>
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#include <stdlib.h>
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#include <sys/reent.h>
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#include <errno.h>
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#include <malloc.h>
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#include "esp_heap_caps.h"
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/*
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These contain the business logic for the malloc() and realloc() implementation. Because of heap tracing
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wrapping reasons, we do not want these to be a public api, however, so they're not defined publicly.
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*/
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extern void *heap_caps_malloc_default(size_t size);
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extern void *heap_caps_realloc_default(void *ptr, size_t size);
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extern void *heap_caps_aligned_alloc_default(size_t alignment, size_t size);
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void* malloc(size_t size)
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{
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return heap_caps_malloc_default(size);
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}
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void* calloc(size_t n, size_t size)
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{
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return _calloc_r(_REENT, n, size);
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}
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void* realloc(void* ptr, size_t size)
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{
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return heap_caps_realloc_default(ptr, size);
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}
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void free(void *ptr)
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{
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heap_caps_free(ptr);
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}
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void* _malloc_r(struct _reent *r, size_t size)
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{
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return heap_caps_malloc_default(size);
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}
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void _free_r(struct _reent *r, void* ptr)
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{
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heap_caps_free(ptr);
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}
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void* _realloc_r(struct _reent *r, void* ptr, size_t size)
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{
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return heap_caps_realloc_default(ptr, size);
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}
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void* _calloc_r(struct _reent *r, size_t nmemb, size_t size)
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{
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void *result;
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size_t size_bytes;
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if (__builtin_mul_overflow(nmemb, size, &size_bytes)) {
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return NULL;
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}
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result = heap_caps_malloc_default(size_bytes);
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if (result != NULL) {
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bzero(result, size_bytes);
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}
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return result;
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}
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void* memalign(size_t alignment, size_t n)
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{
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return heap_caps_aligned_alloc_default(alignment, n);
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}
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int posix_memalign(void **out_ptr, size_t alignment, size_t size)
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{
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if (size == 0) {
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/* returning NULL for zero size is allowed, don't treat this as an error */
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*out_ptr = NULL;
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return 0;
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}
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void *result = heap_caps_aligned_alloc_default(alignment, size);
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if (result != NULL) {
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/* Modify output pointer only on success */
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*out_ptr = result;
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return 0;
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}
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/* Note: error returned, not set via errno! */
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return ENOMEM;
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}
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/* No-op function, used to force linking this file,
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instead of the heap implementation from newlib.
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*/
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void newlib_include_heap_impl(void)
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{
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}
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/* The following functions are implemented by newlib's heap allocator,
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but aren't available in the heap component.
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Define them as non-functional stubs here, so that the application
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can not cause the newlib heap implementation to be linked in
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*/
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int malloc_trim(size_t pad)
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{
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return 0; // indicates failure
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}
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size_t malloc_usable_size(void* p)
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{
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return 0;
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}
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void malloc_stats(void)
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{
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}
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int mallopt(int parameter_number, int parameter_value)
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{
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return 0; // indicates failure
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}
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struct mallinfo mallinfo(void)
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{
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struct mallinfo dummy = {0};
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return dummy;
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}
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void* valloc(size_t n) __attribute__((alias("malloc")));
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void* pvalloc(size_t n) __attribute__((alias("malloc")));
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void cfree(void* p) __attribute__((alias("free")));
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