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21 lines
846 B
C++
21 lines
846 B
C++
// Author: lionkor
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#pragma once
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/*
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* An RWMutex allows multiple simultaneous readlocks but only one writelock at a time,
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* and write locks and read locks are mutually exclusive.
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*/
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#include <shared_mutex>
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#include <mutex>
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// Use ReadLock(m) and WriteLock(m) to lock it.
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using RWMutex = std::shared_mutex;
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// Construct with an RWMutex as a non-const reference.
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// locks the mutex in lock_shared mode (for reading). Locking in a thread that already owns a lock
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// i.e. locking multiple times successively is UB. Construction may be blocking. Destruction is guaranteed to release the lock.
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using ReadLock = std::shared_lock<RWMutex>;
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// Construct with an RWMutex as a non-const reference.
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// locks the mutex for writing. Construction may be blocking. Destruction is guaranteed to release the lock.
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using WriteLock = std::unique_lock<RWMutex>;
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