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70 lines
2.2 KiB
70 lines
2.2 KiB
/*
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* Copyright (C) 2021 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 "ShimBufferTracker"
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#include "ShimBufferTracker.h"
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#include "ShimDevice.h"
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#include <android-base/logging.h>
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#include <algorithm>
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#include <memory>
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#include <string>
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#include <utility>
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#include <vector>
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using namespace ::android::nn::sl_wrapper;
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namespace aidl::android::hardware::neuralnetworks {
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std::unique_ptr<ShimBufferTracker::Token> ShimBufferTracker::add(
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std::shared_ptr<::android::nn::sl_wrapper::Memory> buffer) {
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if (buffer == nullptr) {
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return nullptr;
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}
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std::lock_guard<std::mutex> guard(mMutex);
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uint32_t token = 0;
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if (mFreeTokens.empty()) {
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token = mTokenToBuffers.size();
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mTokenToBuffers.push_back(std::move(buffer));
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} else {
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token = mFreeTokens.top();
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mFreeTokens.pop();
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mTokenToBuffers[token] = std::move(buffer);
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}
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return std::make_unique<Token>(token, shared_from_this());
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}
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std::shared_ptr<::android::nn::sl_wrapper::Memory> ShimBufferTracker::get(uint32_t token) const {
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std::lock_guard<std::mutex> guard(mMutex);
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if (mTokenToBuffers.size() <= token || mTokenToBuffers[token] == nullptr) {
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LOG(ERROR) << "ShimBufferTracker::get -- unknown token " << token;
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return nullptr;
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}
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return mTokenToBuffers[token];
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}
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void ShimBufferTracker::free(uint32_t token) {
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std::lock_guard<std::mutex> guard(mMutex);
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CHECK_LT(token, mTokenToBuffers.size());
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CHECK(mTokenToBuffers[token] != nullptr);
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mTokenToBuffers[token] = nullptr;
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mFreeTokens.push(token);
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}
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} // namespace aidl::android::hardware::neuralnetworks
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