NET_ASYNC Struct Reference

#include <mysql_async.h>

Public Attributes
unsigned char *	cur_pos
	The position in buff we continue reads from when data is next available. More...
enum net_async_block_state	async_blocking_state
	Blocking state. More...
enum net_async_operation	async_operation
	Our current operation. More...
size_t	async_bytes_wanted
	How many bytes we want to read. More...
bool	read_rows_is_first_read
	Simple state to know if we're reading the first row, and command/query statuses. More...
enum net_send_command_status	async_send_command_status
enum net_read_query_result_status	async_read_query_result_status
enum net_async_read_packet_state	async_packet_read_state
	State when waiting on an async read. More...
size_t	async_packet_length
	Size of the packet we're currently reading. More...
unsigned char *	async_write_headers
	Headers and vector for our async writes; see net_serv.c for detailed description. More...
struct io_vec *	async_write_vector
size_t	async_write_vector_size
size_t	async_write_vector_current
unsigned char	inline_async_write_header [NET_HEADER_SIZE+COMP_HEADER_SIZE+NET_HEADER_SIZE+1]
	If the packet length is less than MAX_PACKET_LENGTH then use a static array to hold the meta packet header. More...
struct io_vec	inline_async_write_vector [3]
unsigned char **	compressed_write_buffers
	Keep track of compressed buffers. More...
size_t	compressed_buffers_size
	Size of the compressed buffer. More...

Member Data Documentation

async_blocking_state

enum net_async_block_state NET_ASYNC::async_blocking_state

Blocking state.

async_bytes_wanted

size_t NET_ASYNC::async_bytes_wanted

How many bytes we want to read.

async_operation

enum net_async_operation NET_ASYNC::async_operation

Our current operation.

async_packet_length

size_t NET_ASYNC::async_packet_length

Size of the packet we're currently reading.

async_packet_read_state

enum net_async_read_packet_state NET_ASYNC::async_packet_read_state

State when waiting on an async read.

async_read_query_result_status

enum net_read_query_result_status NET_ASYNC::async_read_query_result_status

async_send_command_status

enum net_send_command_status NET_ASYNC::async_send_command_status

async_write_headers

unsigned char* NET_ASYNC::async_write_headers

Headers and vector for our async writes; see net_serv.c for detailed description.

async_write_vector

struct io_vec* NET_ASYNC::async_write_vector

async_write_vector_current

size_t NET_ASYNC::async_write_vector_current

async_write_vector_size

size_t NET_ASYNC::async_write_vector_size

compressed_buffers_size

size_t NET_ASYNC::compressed_buffers_size

Size of the compressed buffer.

compressed_write_buffers

unsigned char** NET_ASYNC::compressed_write_buffers

Keep track of compressed buffers.

cur_pos

unsigned char* NET_ASYNC::cur_pos

The position in buff we continue reads from when data is next available.

inline_async_write_header

unsigned char NET_ASYNC::inline_async_write_header[NET_HEADER_SIZE+COMP_HEADER_SIZE+ NET_HEADER_SIZE+1]

If the packet length is less than MAX_PACKET_LENGTH then use a static array to hold the meta packet header.

The array either holds the usual packet header or a compressed meta packet header as following. The compressed meta packet header is followwed by usual compresses packet heder that is 7 bytes in length.

Packet

Header

B1 B2 B3  : Packet length
B4        : Packet number

Payload

B5        : COM_COMMAND

Compressed Packet

Header

B1 B2 B3  : Compress packet length
B4        : Compress Packet Nunmber
00 00 00  : Indicates following payload is uncompressed

Payload

B8 B9 B10 : Packet size
B11       : Packet number
B12       : COM_COMMAND

inline_async_write_vector

struct io_vec NET_ASYNC::inline_async_write_vector[3]

read_rows_is_first_read

bool NET_ASYNC::read_rows_is_first_read

Simple state to know if we're reading the first row, and command/query statuses.

---

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

• include/mysql_async.h