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More work on interfaces

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This commit is contained in:
Mikael Ronström 2011-02-16 20:38:35 +01:00
parent b04b333e25
commit fef450b17f
3 changed files with 51 additions and 8 deletions
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19
include/mysql/thread_pool_priv.h
View file

@ -59,6 +59,7 @@ bool thd_is_transaction_active(THD *thd);
int thd_connection_has_data(THD *thd);
void thd_set_net_read_write(THD *thd, uint val);
void thd_set_mysys_var(THD *thd, st_my_thread_var *mysys_var);
my_socket thd_get_fd(THD *thd);
/*
The thread pool must be able to execute commands using the connection
@ -85,14 +86,16 @@ bool init_new_connection_handler_thread();
/*
thread_created is maintained by thread pool when activated since
user threads are created by the thread pool (and also special
threads to maintain the thread pool).
threads to maintain the thread pool). This is done through
inc_thread_created.
max_connections is needed to calculate the maximum number of threads
that is allowed to be started by the thread pool.
that is allowed to be started by the thread pool. The method
get_max_connections() gets reference to this variable.
connection_attrib is the thread attributes for connection threads,
the method get_connection_attrib provides a reference to these
attributes.
*/
extern MYSQL_PLUGIN_IMPORT ulong thread_created;
extern MYSQL_PLUGIN_IMPORT ulong max_connections;
extern MYSQL_PLUGIN_IMPORT mysql_cond_t COND_thread_count;
extern MYSQL_PLUGIN_IMPORT pthread_attr_t connection_attrib;
/* extern MYSQL_PLUGIN_IMPORT I_List<THD> threads; */
extern MYSQL_PLUGIN_IMPORT PSI_thread_key key_thread_one_connection;
pthread_attr_t *get_connection_attrib(void);
void inc_thread_created(void);
ulong get_max_connections(void);
#endif

8
sql/mysqld.cc
View file

@ -4895,6 +4895,14 @@ static bool read_init_file(char *file_name)
}
/**
Increment number of created threads
*/
void inc_thread_created(void)
{
thread_created++;
}
#ifndef EMBEDDED_LIBRARY
/*

32
sql/sql_class.cc
View file

@ -433,6 +433,38 @@ void thd_set_mysys_var(THD *thd, st_my_thread_var *mysys_var)
thd->set_mysys_var(mysys_var);
}
/**
Get socket file descriptor for this connection
@param thd THD object
@retval Socket of the connection
*/
my_socket thd_get_fd(THD *thd)
{
return thd->net.vio->sd;
}
/**
Get thread attributes for connection threads
@retval Reference to thread attribute for connection threads
*/
pthread_attr_t *get_connection_attrib(void)
{
return &connection_attrib;
}
/**
Get max number of connections
@retval Max number of connections for MySQL Server
*/
ulong get_max_connections(void)
{
return max_connections;
}
/*
The following functions form part of the C plugin API
*/