pmlpp/sfw/object/message_queue.h

111 lines
4.1 KiB
C++

#ifndef MESSAGE_QUEUE_H
#define MESSAGE_QUEUE_H
/*************************************************************************/
/* message_queue.h */
/*************************************************************************/
/* This file is part of: */
/* PANDEMONIUM ENGINE */
/* https://github.com/Relintai/pandemonium_engine */
/*************************************************************************/
/* Copyright (c) 2022-present Péter Magyar. */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "core/containers/local_vector.h"
#include "core/object/object.h"
#include "core/os/thread_safe.h"
class MessageQueue {
_THREAD_SAFE_CLASS_
enum {
TYPE_CALL,
TYPE_NOTIFICATION,
TYPE_SET,
FLAG_SHOW_ERROR = 1 << 14,
FLAG_MASK = FLAG_SHOW_ERROR - 1
};
struct Message {
ObjectID instance_id;
StringName target;
int16_t type;
union {
int16_t notification;
int16_t args;
};
};
struct Buffer {
LocalVector<uint8_t> data;
uint64_t end = 0;
};
Buffer buffers[2];
int read_buffer = 0;
int write_buffer = 1;
uint64_t max_allowed_buffer_size = 0;
struct BufferSizeMonitor {
uint32_t max_size = 0;
uint32_t flush_count = 0;
// Only used for performance statistics.
uint32_t max_size_overall = 0;
} _buffer_size_monitor;
void _call_function(Object *p_target, const StringName &p_func, const Variant *p_args, int p_argcount, bool p_show_error);
void _update_buffer_monitor();
static MessageQueue *singleton;
bool flushing;
public:
static MessageQueue *get_singleton();
Error push_call(ObjectID p_id, const StringName &p_method, const Variant **p_args, int p_argcount, bool p_show_error = false);
Error push_call(ObjectID p_id, const StringName &p_method, VARIANT_ARG_LIST);
Error push_notification(ObjectID p_id, int p_notification);
Error push_set(ObjectID p_id, const StringName &p_prop, const Variant &p_value);
Error push_call(Object *p_object, const StringName &p_method, VARIANT_ARG_LIST);
Error push_notification(Object *p_object, int p_notification);
Error push_set(Object *p_object, const StringName &p_prop, const Variant &p_value);
void statistics();
void flush();
bool is_flushing() const;
int get_max_buffer_usage() const;
int get_current_buffer_usage() const;
MessageQueue();
~MessageQueue();
};
#endif // MESSAGE_QUEUE_H