wehub-resource-sync
84 lines
2.5 KiB
C++
84 lines
2.5 KiB
C++
/*
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* SPDX-FileCopyrightText: Copyright (c) 1993-2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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* SPDX-License-Identifier: Apache-2.0
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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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#ifndef TRT_SHARED_FILELOCK_H_
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#define TRT_SHARED_FILELOCK_H_
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#include "NvInfer.h"
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#ifdef _MSC_VER
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// Needed so that the max/min definitions in windows.h do not conflict with std::max/min.
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#define NOMINMAX
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#include <windows.h>
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#undef NOMINMAX
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#else
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#include <stdio.h> // fileno
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#include <unistd.h> // lockf
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#endif
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#include <string>
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namespace nvinfer1::utils
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{
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//! \brief RAII object that locks the specified file.
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//!
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//! The FileLock class uses a lock file to specify that the
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//! current file is being used by a TensorRT tool or sample
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//! so that things like the TimingCache can be updated across
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//! processes without having conflicts.
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class FileLock
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{
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public:
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explicit FileLock(nvinfer1::ILogger& logger, std::string fileName);
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~FileLock();
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FileLock() = delete; // no default ctor
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FileLock(FileLock const&) = delete; // no copy ctor
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FileLock& operator=(FileLock const&) = delete; // no copy assignment
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FileLock(FileLock&&) = delete; // no move ctor
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FileLock& operator=(FileLock&&) = delete; // no move assignment
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private:
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//!
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//! The logger that emits any error messages that might show up.
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//!
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nvinfer1::ILogger& mLogger;
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//!
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//! The filename that the FileLock is protecting from multiple
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//! TensorRT processes from writing to.
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//!
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std::string const mFileName;
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#ifdef _MSC_VER
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//!
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//! The file handle on windows for the file lock.
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//!
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HANDLE mHandle{};
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#elif !defined(__QNX__)
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//!
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//! The file handle on linux for the file lock.
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//!
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FILE* mHandle{};
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//!
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//! The file descriptor on linux of the file lock.
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//!
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int32_t mDescriptor{-1};
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#endif
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}; // class FileLock
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} // namespace nvinfer1::utils
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#endif // TRT_SHARED_FILELOCK_H_
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