5a954cb8b5
Send a synchronous message to objects just before they get moved to a new thread. This allows the object to perform any required processing. EventNotifier and Timer objects will use this mechanism to move themselves to the new thread's event disaptcher. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
68 lines
1.4 KiB
C++
68 lines
1.4 KiB
C++
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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/*
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* Copyright (C) 2019, Google Inc.
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*
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* object.h - Base object
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*/
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#ifndef __LIBCAMERA_OBJECT_H__
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#define __LIBCAMERA_OBJECT_H__
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#include <list>
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#include <memory>
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#include <libcamera/bound_method.h>
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namespace libcamera {
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class Message;
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template<typename... Args>
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class Signal;
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class SignalBase;
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class Thread;
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class Object
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{
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public:
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Object();
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virtual ~Object();
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void postMessage(std::unique_ptr<Message> msg);
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template<typename T, typename... Args, typename std::enable_if<std::is_base_of<Object, T>::value>::type * = nullptr>
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void invokeMethod(void (T::*func)(Args...), Args... args)
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{
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T *obj = static_cast<T *>(this);
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BoundMethodBase *method = new BoundMemberMethod<T, Args...>(obj, this, func);
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void *pack = new typename BoundMemberMethod<T, Args...>::PackType{ args... };
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invokeMethod(method, pack);
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}
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Thread *thread() const { return thread_; }
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void moveToThread(Thread *thread);
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protected:
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virtual void message(Message *msg);
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private:
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template<typename... Args>
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friend class Signal;
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friend class BoundMethodBase;
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friend class Thread;
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void invokeMethod(BoundMethodBase *method, void *pack);
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void notifyThreadMove();
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void connect(SignalBase *signal);
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void disconnect(SignalBase *signal);
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Thread *thread_;
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std::list<SignalBase *> signals_;
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unsigned int pendingMessages_;
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};
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}; /* namespace libcamera */
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#endif /* __LIBCAMERA_OBJECT_H__ */
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