my_thr_init.cc File Reference

Functions to handle initialization and allocation of all mysys & debug thread variables. More...

#include <stdlib.h>
#include <sys/types.h>
#include <time.h>
#include "my_dbug.h"
#include "my_inttypes.h"
#include "my_loglevel.h"
#include "my_macros.h"
#include "my_psi_config.h"
#include "my_sys.h"
#include "my_systime.h"
#include "my_thread.h"
#include "my_thread_local.h"
#include "mysql/psi/mysql_cond.h"
#include "mysql/psi/mysql_mutex.h"
#include "mysql/psi/mysql_thread.h"
#include "mysql/psi/psi_thread.h"
#include "mysys/mysys_priv.h"
#include "mysys_err.h"
#include "thr_mutex.h"

Classes
struct	st_my_thread_var

Functions
static struct st_my_thread_var *	mysys_thread_var ()
static int	set_mysys_thread_var (struct st_my_thread_var *mysys_var)
static void	free_dbug_and_decr_thread_count (st_my_thread_var *)
void	my_thread_global_reinit ()
	Re-initialize components initialized early with my_thread_global_init. More...
bool	my_thread_global_init ()
	initialize thread environment More...
void	my_thread_global_end ()
bool	my_thread_init ()
	Allocate thread specific memory for the thread, used by mysys and dbug. More...
bool	my_thread_is_inited ()
void	my_thread_end ()
	Deallocate memory used by the thread for book-keeping. More...
void	my_main_thread_end ()
int	my_errno ()
	Retrieve the MySQL thread-local storage variant of errno. More...
void	set_my_errno (int my_errno)
	Set the MySQL thread-local storage variant of errno. More...
my_thread_id	my_thread_var_id ()
void	set_my_thread_var_id (my_thread_id id)
CODE_STATE **	my_thread_var_dbug ()

Variables
static bool	my_thread_global_init_done = false
static uint	THR_thread_count = 0
static Timeout_type	my_thread_end_wait_time = 5
static my_thread_id	thread_id = 0
static st_my_thread_var *	THR_mysys_main = nullptr
static thread_local st_my_thread_var *	THR_mysys = nullptr
static thread_local int	THR_myerrno = 0
mysql_mutex_t	THR_LOCK_myisam_mmap
mysql_mutex_t	THR_LOCK_myisam
mysql_mutex_t	THR_LOCK_heap
mysql_mutex_t	THR_LOCK_malloc
mysql_mutex_t	THR_LOCK_open
mysql_mutex_t	THR_LOCK_lock
mysql_mutex_t	THR_LOCK_net
mysql_mutex_t	THR_LOCK_charset
mysql_mutex_t	THR_LOCK_threads
mysql_cond_t	THR_COND_threads

Detailed Description

Functions to handle initialization and allocation of all mysys & debug thread variables.

Function Documentation

free_dbug_and_decr_thread_count()

static void free_dbug_and_decr_thread_count ( st_my_thread_var *  tmp )

static

my_errno()

int my_errno

(

)

Retrieve the MySQL thread-local storage variant of errno.

my_main_thread_end()

void my_main_thread_end

(

)

my_thread_end()

void my_thread_end

(

void

)

Deallocate memory used by the thread for book-keeping.

Note

This may be called multiple times for a thread. This happens for example when one calls 'mysql_server_init()' mysql_server_end() and then ends with a mysql_end().

my_thread_global_end()

void my_thread_global_end

(

)

my_thread_global_init()

bool my_thread_global_init

(

)

initialize thread environment

Return values

false	ok
true	error

my_thread_global_reinit()

void my_thread_global_reinit

(

)

Re-initialize components initialized early with my_thread_global_init.

Some mutexes were initialized before the instrumentation. Destroy + create them again, now that the instrumentation is in place. This is safe, since this function() is called before creating new threads, so the mutexes are not in use.

my_thread_init()

bool my_thread_init

(

void

)

Allocate thread specific memory for the thread, used by mysys and dbug.

Note

This function may called multiple times for a thread, for example if one uses my_init() followed by mysql_server_init().

Return values

false	ok
true	Fatal error; mysys/dbug functions can't be used

my_thread_is_inited()

bool my_thread_is_inited

(

)

my_thread_var_dbug()

CODE_STATE ** my_thread_var_dbug

(

)

my_thread_var_id()

my_thread_id my_thread_var_id

(

)

mysys_thread_var()

static struct st_my_thread_var * mysys_thread_var ( )

static

set_my_errno()

void set_my_errno

(

int

my_errno

)

Set the MySQL thread-local storage variant of errno.

set_my_thread_var_id()

void set_my_thread_var_id

(

my_thread_id

id

)

set_mysys_thread_var()

static int set_mysys_thread_var ( struct st_my_thread_var *  mysys_var )

static

Variable Documentation

my_thread_end_wait_time

Timeout_type my_thread_end_wait_time = 5

static

my_thread_global_init_done

bool my_thread_global_init_done = false

static

THR_COND_threads

mysql_cond_t THR_COND_threads

THR_LOCK_charset

mysql_mutex_t THR_LOCK_charset

THR_LOCK_heap

mysql_mutex_t THR_LOCK_heap

THR_LOCK_lock

mysql_mutex_t THR_LOCK_lock

THR_LOCK_malloc

mysql_mutex_t THR_LOCK_malloc

THR_LOCK_myisam

mysql_mutex_t THR_LOCK_myisam

THR_LOCK_myisam_mmap

mysql_mutex_t THR_LOCK_myisam_mmap

THR_LOCK_net

mysql_mutex_t THR_LOCK_net

THR_LOCK_open

mysql_mutex_t THR_LOCK_open

THR_LOCK_threads

mysql_mutex_t THR_LOCK_threads

THR_myerrno

thread_local int THR_myerrno = 0

static

THR_mysys

thread_local st_my_thread_var* THR_mysys = nullptr

static

THR_mysys_main

st_my_thread_var* THR_mysys_main = nullptr

static

THR_thread_count

uint THR_thread_count = 0

static

thread_id

my_thread_id thread_id = 0

static