wehub-resource-sync
93 lines
2.8 KiB
C++
93 lines
2.8 KiB
C++
/* ******************************************************************************
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*
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* Copyright (c) 2024 Konduit K.K.
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* This program and the accompanying materials are made available under the
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* terms of the Apache License, Version 2.0 which is available at
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* https://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, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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* SPDX-License-Identifier: Apache-2.0
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******************************************************************************/
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#ifndef SD_GENERIC_RESOURCE_MANAGER_H_
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#define SD_GENERIC_RESOURCE_MANAGER_H_
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#include <system/common.h>
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#include <atomic>
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#include <chrono>
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#include <memory>
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#include <mutex>
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namespace sd {
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namespace generic {
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class ResourceManager {
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private:
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mutable std::atomic<size_t> _totalNodes{0};
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std::atomic<size_t> _activeOperations{0};
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std::chrono::steady_clock::time_point _lastCleanup;
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std::mutex _cleanupMutex;
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static constexpr size_t CLEANUP_THRESHOLD = 1000;
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static constexpr auto CLEANUP_INTERVAL = std::chrono::minutes(5);
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public:
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class OperationScope {
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private:
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ResourceManager& _manager;
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public:
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explicit OperationScope(ResourceManager& m) : _manager(m) {
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_manager._activeOperations.fetch_add(1, std::memory_order_acquire);
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}
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~OperationScope() {
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_manager._activeOperations.fetch_sub(1, std::memory_order_release);
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}
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};
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void registerNode() const {
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_totalNodes.fetch_add(1, std::memory_order_relaxed);
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}
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void unregisterNode() const {
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_totalNodes.fetch_sub(1, std::memory_order_relaxed);
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}
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OperationScope createScope() const {
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ResourceManager &m = const_cast<ResourceManager&>(*this);
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return OperationScope(m);
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}
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size_t activeOperations() const {
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return _activeOperations.load(std::memory_order_relaxed);
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}
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size_t totalNodes() const {
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return _totalNodes.load(std::memory_order_relaxed);
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}
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void resetCleanupTimer() {
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std::lock_guard<std::mutex> lock(_cleanupMutex);
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_lastCleanup = std::chrono::steady_clock::now();
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}
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bool shouldCleanup() {
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if (_totalNodes.load(std::memory_order_relaxed) < CLEANUP_THRESHOLD)
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return false;
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auto now = std::chrono::steady_clock::now();
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std::lock_guard<std::mutex> lock(_cleanupMutex);
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if (now - _lastCleanup >= CLEANUP_INTERVAL) {
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_lastCleanup = now;
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return true;
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}
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return false;
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}
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};
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}} // namespace sd::generic
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#endif // SD_GENERIC_RESOURCE_MANAGER_H_
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