topic 运行时状态块 / Runtime state block of one topic More...

#include <topic.hpp>

Collaboration diagram for LibXR::Topic::Block:

Data Fields
std::atomic< LockState >	busy
	发布路径串行化状态。Publish-path serialization state.

LockFreeList	subers
	已挂接订阅者链表。List of attached subscribers.

TypeID::ID	payload_type_id
	精确 payload 类型标识。Exact payload type identifier.

uint32_t	payload_size
	该 topic 固定 payload 字节数。Fixed payload size in bytes of this topic.

uint32_t	payload_alignment
	该 topic payload 所需对齐。Required payload alignment of this topic.

uint32_t	crc32
	主题名 CRC32 键。CRC32 key of the topic name.

Mutex *	mutex
	多发布者主题使用的互斥量。Mutex used by multi-publisher topics.

Detailed Description

topic 运行时状态块 / Runtime state block of one topic

Note: 当前 topic 自身不缓存最近一次消息值；这里只保存类型契约、名称键值、发布串行化状态以及订阅链表。 The topic no longer caches the latest payload value itself; this block keeps only the type contract, topic key, publish-serialization state, and subscriber list.

Definition at line 80 of file topic.hpp.

Field Documentation

std::atomic<LockState> LibXR::Topic::Block::busy

发布路径串行化状态。Publish-path serialization state.

Definition at line 82 of file topic.hpp.

uint32_t LibXR::Topic::Block::crc32

主题名 CRC32 键。CRC32 key of the topic name.

Definition at line 87 of file topic.hpp.

Mutex* LibXR::Topic::Block::mutex

多发布者主题使用的互斥量。Mutex used by multi-publisher topics.

Definition at line 88 of file topic.hpp.

uint32_t LibXR::Topic::Block::payload_alignment

该 topic payload 所需对齐。Required payload alignment of this topic.

Definition at line 86 of file topic.hpp.

uint32_t LibXR::Topic::Block::payload_size

该 topic 固定 payload 字节数。Fixed payload size in bytes of this topic.

Definition at line 85 of file topic.hpp.

TypeID::ID LibXR::Topic::Block::payload_type_id

精确 payload 类型标识。Exact payload type identifier.

Definition at line 84 of file topic.hpp.

LockFreeList LibXR::Topic::Block::subers

已挂接订阅者链表。List of attached subscribers.

Definition at line 83 of file topic.hpp.

The documentation for this struct was generated from the following file: