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113 lines
2.8 KiB
113 lines
2.8 KiB
/*
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "chpp/memory.h"
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#include <stdatomic.h>
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#include <stddef.h>
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#include <stdlib.h>
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#ifdef CHPP_LINUX_MEMORY_DEBUG
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#include "chpp/log.h"
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#endif // CHPP_LINUX_MEMORY_DEBUG
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#include "chpp/macros.h"
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#include "chpp/platform/utils.h"
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//! A header used to track the amount of allocated memory.
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struct ChppAllocHeader {
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size_t bytes;
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};
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static atomic_size_t gTotalAllocBytes = 0;
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void *chppMalloc(const size_t size) {
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void *ptr = NULL;
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if (size != 0) {
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ptr = malloc(sizeof(struct ChppAllocHeader) + size);
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if (ptr != NULL) {
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struct ChppAllocHeader *header = (struct ChppAllocHeader *)ptr;
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header->bytes = size;
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header++;
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ptr = header;
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gTotalAllocBytes += size;
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}
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}
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#ifdef CHPP_LINUX_MEMORY_DEBUG
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CHPP_LOGI("%s: size %zu total (after malloc) %zu", __func__, size,
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gTotalAllocBytes);
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#endif // CHPP_LINUX_MEMORY_DEBUG
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return ptr;
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}
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void chppFree(void *ptr) {
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if (ptr != NULL) {
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struct ChppAllocHeader *header = (struct ChppAllocHeader *)ptr;
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header--;
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size_t size = header->bytes;
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gTotalAllocBytes -= size;
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#ifdef CHPP_LINUX_MEMORY_DEBUG
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CHPP_LOGI("%s: size %zu total (after free) %zu", __func__, size,
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gTotalAllocBytes);
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#endif // CHPP_LINUX_MEMORY_DEBUG
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free(header);
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}
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}
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void *chppRealloc(void *oldPtr, const size_t newSize, const size_t oldSize) {
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UNUSED_VAR(oldSize);
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void *ptr = NULL;
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if (newSize != oldSize) {
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struct ChppAllocHeader *oldHeader = (struct ChppAllocHeader *)oldPtr;
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oldHeader--;
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void *reallocPtr =
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realloc(oldHeader, newSize + sizeof(struct ChppAllocHeader));
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if (reallocPtr != NULL) {
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struct ChppAllocHeader *newHeader = (struct ChppAllocHeader *)reallocPtr;
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newHeader->bytes = newSize;
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newHeader++;
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ptr = newHeader;
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if (newSize > oldSize) {
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gTotalAllocBytes += (newSize - oldSize);
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} else {
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gTotalAllocBytes -= (oldSize - newSize);
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}
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}
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}
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#ifdef CHPP_LINUX_MEMORY_DEBUG
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CHPP_LOGI("%s: size %zu total (after realloc) %zu", __func__, newSize,
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gTotalAllocBytes);
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#endif // CHPP_LINUX_MEMORY_DEBUG
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return ptr;
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}
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void chppClearTotalAllocBytes() {
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gTotalAllocBytes = 0;
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}
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size_t chppGetTotalAllocBytes() {
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return gTotalAllocBytes;
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}
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