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>
65 lines
1.0 KiB
C++
65 lines
1.0 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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* message.h - Message queue support
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*/
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#ifndef __LIBCAMERA_MESSAGE_H__
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#define __LIBCAMERA_MESSAGE_H__
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#include <atomic>
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#include <libcamera/bound_method.h>
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namespace libcamera {
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class BoundMethodBase;
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class Object;
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class Thread;
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class Message
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{
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public:
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enum Type {
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None = 0,
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InvokeMessage = 1,
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ThreadMoveMessage = 2,
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UserMessage = 1000,
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};
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Message(Type type);
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virtual ~Message();
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Type type() const { return type_; }
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Object *receiver() const { return receiver_; }
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static Type registerMessageType();
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private:
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friend class Thread;
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Type type_;
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Object *receiver_;
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static std::atomic_uint nextUserType_;
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};
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class InvokeMessage : public Message
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{
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public:
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InvokeMessage(BoundMethodBase *method, void *pack,
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bool deleteMethod = false);
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~InvokeMessage();
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void invoke();
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private:
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BoundMethodBase *method_;
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void *pack_;
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bool deleteMethod_;
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};
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} /* namespace libcamera */
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#endif /* __LIBCAMERA_MESSAGE_H__ */
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