tool_root_lock.h

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// SPDX-License-Identifier: Apache-2.0
#pragma once
 
#include <entropic/entropic_export.h>
 
#include <atomic>
#include <shared_mutex>
#include <string>
#include <thread>
 
namespace entropic {
 
class ENTROPIC_EXPORT ToolRootLock {
public:
    void lock();
 
    void unlock();
 
    bool lock_shared(const std::string& what);
 
    void unlock_shared();
 
    bool owned_by_this_thread() const;
 
private:
    std::shared_mutex mutex_;                
    std::atomic<std::thread::id> owner_{};   
    int depth_ = 0;                          
};
 
class ENTROPIC_EXPORT ToolRootShared {
public:
    ToolRootShared(ToolRootLock& lock, const std::string& what);
 
    ~ToolRootShared();
 
    ToolRootShared(const ToolRootShared&) = delete;
    ToolRootShared& operator=(const ToolRootShared&) = delete;
 
private:
    ToolRootLock& lock_;  
    bool held_;           
};
 
} // namespace entropic