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50 lines
1.4 KiB
50 lines
1.4 KiB
/*
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* Copyright (C) 2019 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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#define LOG_TAG "MemoryUtils"
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#include "MemoryUtils.h"
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#include <android-base/logging.h>
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#include <android/hidl/allocator/1.0/IAllocator.h>
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using ::android::hardware::hidl_memory;
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using ::android::hidl::allocator::V1_0::IAllocator;
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namespace android {
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namespace nn {
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hidl_memory allocateSharedMemory(int64_t size) {
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static const std::string type = "ashmem";
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static sp<IAllocator> allocator = IAllocator::getService(type);
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hidl_memory memory;
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// TODO: should we align memory size to nearest page? doesn't seem necessary...
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allocator->allocate(size, [&](bool success, const hidl_memory& mem) {
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if (!success) {
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LOG(ERROR) << "unable to allocate " << size << " bytes of " << type;
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} else {
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memory = mem;
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}
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});
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return memory;
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}
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} // namespace nn
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} // namespace android
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