45 lines
1009 B
C++
45 lines
1009 B
C++
// Copyright 2023 Dolphin Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#pragma once
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#include <mutex>
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#include "Core/Core.h"
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// The Core only supports using a single Host thread.
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// If multiple threads want to call host functions then they need to queue
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// sequentially for access.
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struct HostThreadLock
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{
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public:
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explicit HostThreadLock() : m_lock(s_host_identity_mutex) { Core::DeclareAsHostThread(); }
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~HostThreadLock()
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{
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if (m_lock.owns_lock())
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Core::UndeclareAsHostThread();
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}
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HostThreadLock(const HostThreadLock& other) = delete;
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HostThreadLock(HostThreadLock&& other) = delete;
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HostThreadLock& operator=(const HostThreadLock& other) = delete;
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HostThreadLock& operator=(HostThreadLock&& other) = delete;
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void Lock()
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{
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m_lock.lock();
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Core::DeclareAsHostThread();
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}
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void Unlock()
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{
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m_lock.unlock();
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Core::UndeclareAsHostThread();
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}
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private:
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static std::mutex s_host_identity_mutex;
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std::unique_lock<std::mutex> m_lock;
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};
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