mirror of
https://github.com/wpilibsuite/allwpilib
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70 lines
2.0 KiB
C++
70 lines
2.0 KiB
C++
/*----------------------------------------------------------------------------*/
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/* Copyright (c) FIRST 2015. All Rights Reserved. */
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/* Open Source Software - may be modified and shared by FRC teams. The code */
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/* must be accompanied by the FIRST BSD license file in the root directory of */
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/* the project. */
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/*----------------------------------------------------------------------------*/
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#ifndef NT_NOTIFIER_H_
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#define NT_NOTIFIER_H_
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#include <functional>
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#include "support/atomic_static.h"
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#include "support/SafeThread.h"
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#include "ntcore_cpp.h"
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namespace nt {
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class Notifier {
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friend class NotifierTest;
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public:
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static Notifier& GetInstance() {
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ATOMIC_STATIC(Notifier, instance);
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return instance;
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}
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~Notifier();
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void Start();
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void Stop();
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bool local_notifiers() const { return m_local_notifiers; }
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static bool destroyed() { return s_destroyed; }
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void SetOnStart(std::function<void()> on_start) { m_on_start = on_start; }
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void SetOnExit(std::function<void()> on_exit) { m_on_exit = on_exit; }
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unsigned int AddEntryListener(llvm::StringRef prefix,
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EntryListenerCallback callback,
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unsigned int flags);
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void RemoveEntryListener(unsigned int entry_listener_uid);
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void NotifyEntry(StringRef name, std::shared_ptr<Value> value,
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unsigned int flags, EntryListenerCallback only = nullptr);
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unsigned int AddConnectionListener(ConnectionListenerCallback callback);
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void RemoveConnectionListener(unsigned int conn_listener_uid);
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void NotifyConnection(bool connected, const ConnectionInfo& conn_info,
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ConnectionListenerCallback only = nullptr);
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private:
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Notifier();
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class Thread;
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wpi::SafeThreadOwner<Thread> m_owner;
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std::atomic_bool m_local_notifiers;
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std::function<void()> m_on_start;
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std::function<void()> m_on_exit;
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ATOMIC_STATIC_DECL(Notifier)
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static bool s_destroyed;
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};
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} // namespace nt
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#endif // NT_NOTIFIER_H_
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