mirror of https://github.com/alibaba/MNN.git
63 lines
1.4 KiB
C++
63 lines
1.4 KiB
C++
//
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// MNNMemoryUtils.cpp
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// MNN
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//
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// Created by MNN on 2018/07/14.
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// Copyright © 2018, Alibaba Group Holding Limited
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//
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#include "core/MNNMemoryUtils.h"
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#include <stdint.h>
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#include <stdlib.h>
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#include "core/Macro.h"
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//#define MNN_DEBUG_MEMORY
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static inline void **alignPointer(void **ptr, size_t alignment) {
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return (void **)((intptr_t)((unsigned char *)ptr + alignment - 1) & -alignment);
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}
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extern "C" void *MNNMemoryAllocAlign(size_t size, size_t alignment) {
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MNN_ASSERT(size > 0);
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#ifdef MNN_DEBUG_MEMORY
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return malloc(size);
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#else
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void **origin = (void **)malloc(size + sizeof(void *) + alignment);
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MNN_ASSERT(origin != NULL);
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if (!origin) {
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return NULL;
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}
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void **aligned = alignPointer(origin + 1, alignment);
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aligned[-1] = origin;
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return aligned;
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#endif
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}
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extern "C" void *MNNMemoryCallocAlign(size_t size, size_t alignment) {
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MNN_ASSERT(size > 0);
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#ifdef MNN_DEBUG_MEMORY
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return calloc(size, 1);
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#else
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void **origin = (void **)calloc(size + sizeof(void *) + alignment, 1);
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MNN_ASSERT(origin != NULL)
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if (!origin) {
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return NULL;
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}
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void **aligned = alignPointer(origin + 1, alignment);
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aligned[-1] = origin;
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return aligned;
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#endif
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}
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extern "C" void MNNMemoryFreeAlign(void *aligned) {
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#ifdef MNN_DEBUG_MEMORY
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free(aligned);
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#else
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if (aligned) {
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void *origin = ((void **)aligned)[-1];
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free(origin);
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}
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#endif
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}
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