mariadb/include/mysql/plugin.h.pp
Sergey Vojtovich b89feb5b28 BUG#39053 - UNISTALL PLUGIN does not allow the storage engine
to cleanup open connections

It was possible to UNINSTALL storage engine plugin when binding
between THD object and storage engine is still active (e.g. in
the middle of transaction).

To avoid unclean deactivation (uninstall) of storage engine plugin
in the middle of transaction, additional storage engine plugin
lock is acquired by thd_set_ha_data().

If ha_data is not null and storage engine plugin was not locked
by thd_set_ha_data() in this connection before, storage engine
plugin gets locked.

If ha_data is null and storage engine plugin was locked by
thd_set_ha_data() in this connection before, storage engine
plugin lock gets released.

If handlerton::close_connection() didn't reset ha_data, server does
it immediately after calling handlerton::close_connection().

Note that this is just a framework fix, storage engines must switch
to thd_set_ha_data() from thd_ha_data() if they want to see fit.
2010-04-14 13:53:59 +04:00

142 lines
4.4 KiB
ObjectPascal

struct st_mysql_lex_string
{
char *str;
unsigned int length;
};
typedef struct st_mysql_lex_string MYSQL_LEX_STRING;
struct st_mysql_xid {
long formatID;
long gtrid_length;
long bqual_length;
char data[128];
};
typedef struct st_mysql_xid MYSQL_XID;
enum enum_mysql_show_type
{
SHOW_UNDEF, SHOW_BOOL, SHOW_INT, SHOW_LONG,
SHOW_LONGLONG, SHOW_CHAR, SHOW_CHAR_PTR,
SHOW_ARRAY, SHOW_FUNC, SHOW_DOUBLE
};
struct st_mysql_show_var {
const char *name;
char *value;
enum enum_mysql_show_type type;
};
typedef int (*mysql_show_var_func)(void*, struct st_mysql_show_var*, char *);
struct st_mysql_sys_var;
struct st_mysql_value;
typedef int (*mysql_var_check_func)(void* thd,
struct st_mysql_sys_var *var,
void *save, struct st_mysql_value *value);
typedef void (*mysql_var_update_func)(void* thd,
struct st_mysql_sys_var *var,
void *var_ptr, const void *save);
struct st_mysql_plugin
{
int type;
void *info;
const char *name;
const char *author;
const char *descr;
int license;
int (*init)(void *);
int (*deinit)(void *);
unsigned int version;
struct st_mysql_show_var *status_vars;
struct st_mysql_sys_var **system_vars;
void * __reserved1;
};
enum enum_ftparser_mode
{
MYSQL_FTPARSER_SIMPLE_MODE= 0,
MYSQL_FTPARSER_WITH_STOPWORDS= 1,
MYSQL_FTPARSER_FULL_BOOLEAN_INFO= 2
};
enum enum_ft_token_type
{
FT_TOKEN_EOF= 0,
FT_TOKEN_WORD= 1,
FT_TOKEN_LEFT_PAREN= 2,
FT_TOKEN_RIGHT_PAREN= 3,
FT_TOKEN_STOPWORD= 4
};
typedef struct st_mysql_ftparser_boolean_info
{
enum enum_ft_token_type type;
int yesno;
int weight_adjust;
char wasign;
char trunc;
char prev;
char *quot;
} MYSQL_FTPARSER_BOOLEAN_INFO;
typedef struct st_mysql_ftparser_param
{
int (*mysql_parse)(struct st_mysql_ftparser_param *,
char *doc, int doc_len);
int (*mysql_add_word)(struct st_mysql_ftparser_param *,
char *word, int word_len,
MYSQL_FTPARSER_BOOLEAN_INFO *boolean_info);
void *ftparser_state;
void *mysql_ftparam;
struct charset_info_st *cs;
char *doc;
int length;
int flags;
enum enum_ftparser_mode mode;
} MYSQL_FTPARSER_PARAM;
struct st_mysql_ftparser
{
int interface_version;
int (*parse)(MYSQL_FTPARSER_PARAM *param);
int (*init)(MYSQL_FTPARSER_PARAM *param);
int (*deinit)(MYSQL_FTPARSER_PARAM *param);
};
struct st_mysql_storage_engine
{
int interface_version;
};
struct handlerton;
struct st_mysql_daemon
{
int interface_version;
};
struct st_mysql_information_schema
{
int interface_version;
};
struct st_mysql_value
{
int (*value_type)(struct st_mysql_value *);
const char *(*val_str)(struct st_mysql_value *, char *buffer, int *length);
int (*val_real)(struct st_mysql_value *, double *realbuf);
int (*val_int)(struct st_mysql_value *, long long *intbuf);
};
int thd_in_lock_tables(const void* thd);
int thd_tablespace_op(const void* thd);
long long thd_test_options(const void* thd, long long test_options);
int thd_sql_command(const void* thd);
const char *thd_proc_info(void* thd, const char *info);
void **thd_ha_data(const void* thd, const struct handlerton *hton);
int thd_tx_isolation(const void* thd);
char *thd_security_context(void* thd, char *buffer, unsigned int length,
unsigned int max_query_len);
void thd_inc_row_count(void* thd);
int mysql_tmpfile(const char *prefix);
int thd_killed(const void* thd);
unsigned long thd_get_thread_id(const void* thd);
void *thd_alloc(void* thd, unsigned int size);
void *thd_calloc(void* thd, unsigned int size);
char *thd_strdup(void* thd, const char *str);
char *thd_strmake(void* thd, const char *str, unsigned int size);
void *thd_memdup(void* thd, const void* str, unsigned int size);
MYSQL_LEX_STRING *thd_make_lex_string(void* thd, MYSQL_LEX_STRING *lex_str,
const char *str, unsigned int size,
int allocate_lex_string);
void thd_get_xid(const void* thd, MYSQL_XID *xid);
void mysql_query_cache_invalidate4(void* thd,
const char *key, unsigned int key_length,
int using_trx);
void *thd_get_ha_data(const void* thd, const struct handlerton *hton);
void thd_set_ha_data(void* thd, const struct handlerton *hton,
const void *ha_data);