Collaboration diagram for Shutdown/kill enums and constants:

Macros
#define	MYSQL_SHUTDOWN_KILLABLE_CONNECT (unsigned char)(1 << 0)

#define	MYSQL_SHUTDOWN_KILLABLE_TRANS (unsigned char)(1 << 1)

#define	MYSQL_SHUTDOWN_KILLABLE_LOCK_TABLE (unsigned char)(1 << 2)

#define	MYSQL_SHUTDOWN_KILLABLE_UPDATE (unsigned char)(1 << 3)

Enumerations
enum	mysql_enum_shutdown_level { SHUTDOWN_DEFAULT = 0 , SHUTDOWN_WAIT_CONNECTIONS = MYSQL_SHUTDOWN_KILLABLE_CONNECT , SHUTDOWN_WAIT_TRANSACTIONS = MYSQL_SHUTDOWN_KILLABLE_TRANS , SHUTDOWN_WAIT_UPDATES = MYSQL_SHUTDOWN_KILLABLE_UPDATE , SHUTDOWN_WAIT_ALL_BUFFERS = (MYSQL_SHUTDOWN_KILLABLE_UPDATE << 1) , SHUTDOWN_WAIT_CRITICAL_BUFFERS = (MYSQL_SHUTDOWN_KILLABLE_UPDATE << 1) + 1 , KILL_QUERY = 254 , KILL_CONNECTION = 255 }
	We want levels to be in growing order of hardness (because we use number comparisons). More...

Detailed Description

Macro Definition Documentation

#define MYSQL_SHUTDOWN_KILLABLE_CONNECT (unsigned char)(1 << 0)

#define MYSQL_SHUTDOWN_KILLABLE_LOCK_TABLE (unsigned char)(1 << 2)

#define MYSQL_SHUTDOWN_KILLABLE_TRANS (unsigned char)(1 << 1)

#define MYSQL_SHUTDOWN_KILLABLE_UPDATE (unsigned char)(1 << 3)

We want levels to be in growing order of hardness (because we use number comparisons).

Enumerator
SHUTDOWN_DEFAULT
SHUTDOWN_WAIT_CONNECTIONS	Wait for existing connections to finish.
SHUTDOWN_WAIT_TRANSACTIONS	Wait for existing transactons to finish.
SHUTDOWN_WAIT_UPDATES	Wait for existing updates to finish (=> no partial MyISAM update)
SHUTDOWN_WAIT_ALL_BUFFERS	Flush InnoDB buffers and other storage engines' buffers.
SHUTDOWN_WAIT_CRITICAL_BUFFERS	Don't flush InnoDB buffers, flush other storage engines' buffers.
KILL_QUERY	Query level of the KILL command.
KILL_CONNECTION	Connection level of the KILL command.