Ramesh Errabolu
b84e4987da
Change-Id: I1e1b33f9bba1078d049bc19797889988c3e43360
[ROCm/ROCR-Runtime commit: fa13208698]
130 satır
3.5 KiB
C++
130 satır
3.5 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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//
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// The University of Illinois/NCSA
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// Open Source License (NCSA)
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//
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// Copyright (c) 2014-2020, Advanced Micro Devices, Inc. All rights reserved.
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//
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// Developed by:
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//
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// AMD Research and AMD HSA Software Development
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//
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// Advanced Micro Devices, Inc.
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//
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// www.amd.com
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal with the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// - Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimers.
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// - Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimers in
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// the documentation and/or other materials provided with the distribution.
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// - Neither the names of Advanced Micro Devices, Inc,
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// nor the names of its contributors may be used to endorse or promote
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// products derived from this Software without specific prior written
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// permission.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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// THE CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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// OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS WITH THE SOFTWARE.
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//
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////////////////////////////////////////////////////////////////////////////////
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#ifndef AMD_HSA_LOCKS_HPP
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#define AMD_HSA_LOCKS_HPP
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#include <condition_variable>
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#include <cstddef>
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#include <mutex>
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namespace rocr {
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namespace amd {
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namespace hsa {
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namespace common {
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template<typename LockType>
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class ReaderLockGuard final {
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public:
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explicit ReaderLockGuard(LockType &lock):
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lock_(lock)
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{
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lock_.ReaderLock();
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}
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~ReaderLockGuard()
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{
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lock_.ReaderUnlock();
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}
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private:
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ReaderLockGuard(const ReaderLockGuard&);
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ReaderLockGuard& operator=(const ReaderLockGuard&);
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LockType &lock_;
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};
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template<typename LockType>
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class WriterLockGuard final {
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public:
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explicit WriterLockGuard(LockType &lock):
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lock_(lock)
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{
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lock_.WriterLock();
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}
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~WriterLockGuard()
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{
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lock_.WriterUnlock();
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}
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private:
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WriterLockGuard(const WriterLockGuard&);
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WriterLockGuard& operator=(const WriterLockGuard&);
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LockType &lock_;
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};
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class ReaderWriterLock final {
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public:
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ReaderWriterLock():
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readers_count_(0), writers_count_(0), writers_waiting_(0) {}
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~ReaderWriterLock() {}
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void ReaderLock();
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void ReaderUnlock();
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void WriterLock();
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void WriterUnlock();
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private:
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ReaderWriterLock(const ReaderWriterLock&);
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ReaderWriterLock& operator=(const ReaderWriterLock&);
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size_t readers_count_;
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size_t writers_count_;
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size_t writers_waiting_;
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std::mutex internal_lock_;
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std::condition_variable_any readers_condition_;
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std::condition_variable_any writers_condition_;
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};
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} // namespace common
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} // namespace hsa
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} // namespace amd
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} // namespace rocr
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#endif // AMD_HSA_LOCKS_HPP
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