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76 lines
2.4 KiB
C
76 lines
2.4 KiB
C
/*
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* SPDX-License-Identifier: MIT
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*
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* Copyright (C) 2013-2024 OpenMV, LLC.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* Memory allocation functions.
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*/
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#include <string.h>
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#include "py/runtime.h"
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#include "py/gc.h"
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#include "py/mphal.h"
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#include "xalloc.h"
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NORETURN static void xalloc_fail(uint32_t size) {
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mp_raise_msg_varg(&mp_type_MemoryError,
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MP_ERROR_TEXT("memory allocation failed, allocating %u bytes"), (uint) size);
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}
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// returns null pointer without error if size==0
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void *xalloc(uint32_t size) {
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void *mem = gc_alloc(size, false);
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if (size && (mem == NULL)) {
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xalloc_fail(size);
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}
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return mem;
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}
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// returns null pointer without error if size==0
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void *xalloc_try_alloc(uint32_t size) {
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return gc_alloc(size, false);
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}
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// returns null pointer without error if size==0
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void *xalloc0(uint32_t size) {
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void *mem = gc_alloc(size, false);
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if (size && (mem == NULL)) {
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xalloc_fail(size);
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}
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memset(mem, 0, size);
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return mem;
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}
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// returns without error if mem==null
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void xfree(void *mem) {
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gc_free(mem);
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}
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// returns null pointer without error if size==0
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// allocs if mem==null and size!=0
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// frees if mem!=null and size==0
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void *xrealloc(void *mem, uint32_t size) {
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mem = gc_realloc(mem, size, true);
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if (size && (mem == NULL)) {
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xalloc_fail(size);
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}
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return mem;
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}
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