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69 lines
1.6 KiB
69 lines
1.6 KiB
/*
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* Copyright (C) 2018 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 "chre/util/buffer_base.h"
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#include <cstring>
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#include "chre/util/container_support.h"
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namespace chre {
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BufferBase::~BufferBase() {
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reset();
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}
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void BufferBase::wrap(void *buffer, size_t size) {
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// If buffer is nullptr, size must also be 0.
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CHRE_ASSERT(buffer != nullptr || size == 0);
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reset();
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mBuffer = buffer;
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mSize = size;
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}
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bool BufferBase::copy_array(const void *buffer, size_t size,
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size_t elementSize) {
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// If buffer is nullptr, size must also be 0.
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CHRE_ASSERT(buffer != nullptr || size == 0);
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reset();
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bool success = (size == 0);
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if (!success) {
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size_t copyBytes = size * elementSize;
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mBuffer = memoryAlloc(copyBytes);
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if (mBuffer != nullptr) {
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mBufferRequiresFree = true;
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memcpy(mBuffer, buffer, copyBytes);
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mSize = size;
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success = true;
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}
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}
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return success;
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}
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void BufferBase::reset() {
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if (mBufferRequiresFree) {
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mBufferRequiresFree = false;
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memoryFree(mBuffer);
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}
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mBuffer = nullptr;
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mSize = 0;
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}
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} // namespace chre
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