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Merge MySQL->MariaDB

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* Finished Monty and Jani's merge
* Some InnoDB tests still fail (because it's old xtradb code run against
  newer testsuite). They are expected to go after mergning with the latest
  xtradb.
This commit is contained in:
Sergey Petrunya
2009-09-08 00:50:10 +04:00
parent 915a624cbc 8a2454f8e9
commit 29f0dcb563
1190 changed files with 268668 additions and 17777 deletions
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102
sql/sql_class.h
View File

@ -93,7 +93,7 @@ enum enum_mark_columns
extern char internal_table_name[2];
extern char empty_c_string[1];
extern const char **errmesg;
extern MYSQL_PLUGIN_IMPORT const char **errmesg;
#define TC_LOG_PAGE_SIZE 8192
#define TC_LOG_MIN_SIZE (3*TC_LOG_PAGE_SIZE)
@ -637,22 +637,16 @@ public:
we need to declare it char * because all table handlers are written
in C and need to point to it.
Note that (A) if we set query = NULL, we must at the same time set
query_length = 0, and protect the whole operation with the
LOCK_thread_count mutex. And (B) we are ONLY allowed to set query to a
non-NULL value if its previous value is NULL. We do not need to protect
operation (B) with any mutex. To avoid crashes in races, if we do not
know that thd->query cannot change at the moment, one should print
Note that if we set query = NULL, we must at the same time set
query_length = 0, and protect the whole operation with
LOCK_thd_data mutex. To avoid crashes in races, if we do not
know that thd->query cannot change at the moment, we should print
thd->query like this:
(1) reserve the LOCK_thread_count mutex;
(2) check if thd->query is NULL;
(3) if not NULL, then print at most thd->query_length characters from
it. We will see the query_length field as either 0, or the right value
for it.
Assuming that the write and read of an n-bit memory field in an n-bit
computer is atomic, we can avoid races in the above way.
This printing is needed at least in SHOW PROCESSLIST and SHOW INNODB
STATUS.
(1) reserve the LOCK_thd_data mutex;
(2) print or copy the value of query and query_length
(3) release LOCK_thd_data mutex.
This printing is needed at least in SHOW PROCESSLIST and SHOW
ENGINE INNODB STATUS.
*/
char *query;
uint32 query_length; // current query length
@ -684,7 +678,7 @@ public:
virtual ~Statement();
/* Assign execution context (note: not all members) of given stmt to self */
void set_statement(Statement *stmt);
virtual void set_statement(Statement *stmt);
void set_n_backup_statement(Statement *stmt, Statement *backup);
void restore_backup_statement(Statement *stmt, Statement *backup);
/* return class type */
@ -1042,7 +1036,10 @@ show_system_thread(enum_thread_type thread)
class Internal_error_handler
{
protected:
Internal_error_handler() {}
Internal_error_handler() :
m_prev_internal_handler(NULL)
{}
virtual ~Internal_error_handler() {}
public:
@ -1075,6 +1072,28 @@ public:
const char *message,
MYSQL_ERROR::enum_warning_level level,
THD *thd) = 0;
private:
Internal_error_handler *m_prev_internal_handler;
friend class THD;
};
/**
Implements the trivial error handler which cancels all error states
and prevents an SQLSTATE to be set.
*/
class Dummy_error_handler : public Internal_error_handler
{
public:
bool handle_error(uint sql_errno,
const char *message,
MYSQL_ERROR::enum_warning_level level,
THD *thd)
{
/* Ignore error */
return TRUE;
}
};
@ -1280,7 +1299,15 @@ public:
THR_LOCK_OWNER main_lock_id; // To use for conventional queries
THR_LOCK_OWNER *lock_id; // If not main_lock_id, points to
// the lock_id of a cursor.
pthread_mutex_t LOCK_delete; // Locked before thd is deleted
/**
Protects THD data accessed from other threads:
- thd->query and thd->query_length (used by SHOW ENGINE
INNODB STATUS and SHOW PROCESSLIST
- thd->mysys_var (used by KILL statement and shutdown).
Is locked when THD is deleted.
*/
pthread_mutex_t LOCK_thd_data;
/* all prepared statements and cursors of this connection */
Statement_map stmt_map;
/*
@ -1317,6 +1344,10 @@ public:
Set it using the thd_proc_info(THD *thread, const char *message)
macro/function.
This member is accessed and assigned without any synchronization.
Therefore, it may point only to constant (statically
allocated) strings, which memory won't go away over time.
*/
const char *proc_info;
@ -1352,7 +1383,8 @@ public:
/* remote (peer) port */
uint16 peer_port;
time_t start_time, user_time;
ulonglong connect_utime, thr_create_utime; // track down slow pthread_create
// track down slow pthread_create
ulonglong prior_thr_create_utime, thr_create_utime;
ulonglong start_utime, utime_after_lock;
thr_lock_type update_lock_default;
@ -1447,6 +1479,14 @@ public:
{
changed_tables= 0;
savepoints= 0;
/*
If rm_error is raised, it means that this piece of a distributed
transaction has failed and must be rolled back. But the user must
rollback it explicitly, so don't start a new distributed XA until
then.
*/
if (!xid_state.rm_error)
xid_state.xid.null();
#ifdef USING_TRANSACTIONS
free_root(&mem_root,MYF(MY_KEEP_PREALLOC));
#endif
@ -1862,15 +1902,15 @@ public:
#ifdef SIGNAL_WITH_VIO_CLOSE
inline void set_active_vio(Vio* vio)
{
pthread_mutex_lock(&LOCK_delete);
pthread_mutex_lock(&LOCK_thd_data);
active_vio = vio;
pthread_mutex_unlock(&LOCK_delete);
pthread_mutex_unlock(&LOCK_thd_data);
}
inline void clear_active_vio()
{
pthread_mutex_lock(&LOCK_delete);
pthread_mutex_lock(&LOCK_thd_data);
active_vio = 0;
pthread_mutex_unlock(&LOCK_delete);
pthread_mutex_unlock(&LOCK_thd_data);
}
void close_active_vio();
#endif
@ -1899,7 +1939,7 @@ public:
int binlog_query(enum_binlog_query_type qtype,
char const *query, ulong query_len,
bool is_trans, bool suppress_use,
THD::killed_state killed_err_arg= THD::KILLED_NO_VALUE);
int errcode);
#endif
/*
@ -2220,6 +2260,9 @@ public:
thd_scheduler event_scheduler;
public:
inline Internal_error_handler *get_internal_handler()
{ return m_internal_handler; }
/**
Add an internal error handler to the thread execution context.
@param handler the exception handler to add
@ -2240,6 +2283,14 @@ public:
*/
void pop_internal_handler();
/** Overloaded to guard query/query_length fields */
virtual void set_statement(Statement *stmt);
/**
Assign a new value to thd->query.
Protected with LOCK_thd_data mutex.
*/
void set_query(char *query_arg, uint32 query_length_arg);
private:
/** The current internal error handler for this thread, or NULL. */
Internal_error_handler *m_internal_handler;
@ -2452,6 +2503,7 @@ class select_export :public select_to_file {
*/
bool is_unsafe_field_sep;
bool fixed_row_size;
CHARSET_INFO *write_cs; // output charset
public:
select_export(sql_exchange *ex) :select_to_file(ex) {}
/**