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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* message.h - Message queue support
*/
#pragma once
#include <atomic>
#include <libcamera/base/private.h>
#include <libcamera/base/bound_method.h>
namespace libcamera {
class BoundMethodBase;
class Object;
class Semaphore;
class Thread;
class Message
{
public:
enum Type {
None = 0,
InvokeMessage = 1,
ThreadMoveMessage = 2,
DeferredDelete = 3,
UserMessage = 1000,
};
Message(Type type);
virtual ~Message();
Type type() const { return type_; }
Object *receiver() const { return receiver_; }
static Type registerMessageType();
private:
friend class Thread;
Type type_;
Object *receiver_;
static std::atomic_uint nextUserType_;
};
class InvokeMessage : public Message
{
public:
InvokeMessage(BoundMethodBase *method,
std::shared_ptr<BoundMethodPackBase> pack,
Semaphore *semaphore = nullptr,
bool deleteMethod = false);
~InvokeMessage();
Semaphore *semaphore() const { return semaphore_; }
void invoke();
private:
BoundMethodBase *method_;
std::shared_ptr<BoundMethodPackBase> pack_;
Semaphore *semaphore_;
bool deleteMethod_;
};
} /* namespace libcamera */
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