Commit 99ea15c9 authored by unknown's avatar unknown
Browse files

The patch adds PROCESSLIST information schema 


mysql-test/r/information_schema.result:
  Fixing results after PROCESSLIST information schema is added.
mysql-test/r/information_schema_db.result:
  Fixing results after PROCESSLIST information schema is added.
mysql-test/t/information_schema.test:
  Test case to check PROCESSLIST information schema.
    (Note that selecting other fields from PROCESSLIST
    can make the test unstable).
sql/sql_show.cc:
  Code for PROCESSLIST information schema
sql/table.h:
  Added for PROCESSLIST informarion schema
parent 97243651

mysql-test/r/information_schema.result

+8 −2
Original line number Diff line number Diff line
@@ -49,6 +49,7 @@ FILES 
KEY_COLUMN_USAGE

PARTITIONS

PLUGINS

PROCESSLIST

ROUTINES

SCHEMATA

SCHEMA_PRIVILEGES
@@ -737,7 +738,7 @@ CREATE TABLE t_crashme ( f1 BIGINT); 
CREATE VIEW a1 (t_CRASHME) AS SELECT f1 FROM t_crashme GROUP BY f1;

CREATE VIEW a2 AS SELECT t_CRASHME FROM a1;

count(*)

111

112

drop view a2, a1;

drop table t_crashme;

select table_schema,table_name, column_name from
@@ -835,7 +836,7 @@ flush privileges; 
SELECT table_schema, count(*) FROM information_schema.TABLES GROUP BY TABLE_SCHEMA;

table_schema	count(*)

cluster_replication	1

information_schema	21

information_schema	22

mysql	21

create table t1 (i int, j int);

create trigger trg1 before insert on t1 for each row
@@ -1142,3 +1143,8 @@ varchar(20) information_schema.COLUMNS,information_schema.FILES,information_sche 
select * from information_schema.engines WHERE ENGINE="MyISAM";

ENGINE	SUPPORT	COMMENT	TRANSACTIONS	XA	SAVEPOINTS

MyISAM	ENABLED	Default engine as of MySQL 3.23 with great performance	NO	NO	NO

grant select on *.* to user3148@localhost;

select user,db from information_schema.processlist;

user	db

user3148	test

drop user user3148@localhost;

mysql-test/r/information_schema_db.result

+1 −0
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ FILES 
KEY_COLUMN_USAGE

PARTITIONS

PLUGINS

PROCESSLIST

ROUTINES

SCHEMATA

SCHEMA_PRIVILEGES

mysql-test/t/information_schema.test

+13 −0
Original line number Diff line number Diff line
@@ -821,3 +821,16 @@ group by column_type order by num; 
#



select * from information_schema.engines WHERE ENGINE="MyISAM";



#

# INFORMATION_SCHEMA.PROCESSLIST

#



grant select on *.* to user3148@localhost;

connect (con3148,localhost,user3148,,test);

connection con3148;

select user,db from information_schema.processlist;

connection default;

drop user user3148@localhost;

sql/sql_show.cc

+129 −0
Original line number Diff line number Diff line
@@ -1519,6 +1519,119 @@ void mysqld_list_processes(THD *thd,const char *user, bool verbose) 
  DBUG_VOID_RETURN;

}



int fill_schema_processlist(THD* thd, TABLE_LIST* tables, COND* cond)

{

  TABLE *table= tables->table;

  CHARSET_INFO *cs= system_charset_info;

  char *user;

  bool verbose;

  ulong max_query_length;

  time_t now= time(0);

  DBUG_ENTER("fill_process_list");



  user= thd->security_ctx->master_access & PROCESS_ACL ?

        NullS : thd->security_ctx->priv_user;

  verbose= thd->lex->verbose;

  max_query_length= PROCESS_LIST_WIDTH;



  VOID(pthread_mutex_lock(&LOCK_thread_count));



  if (!thd->killed)

  {

    I_List_iterator<THD> it(threads);

    THD* tmp;



    while ((tmp= it++))

    {

      Security_context *tmp_sctx= tmp->security_ctx;

      struct st_my_thread_var *mysys_var;

      const char *val;



      if ((!tmp->vio_ok() && !tmp->system_thread) ||

          (user && (!tmp_sctx->user || strcmp(tmp_sctx->user, user))))

        continue;



      restore_record(table, s->default_values);

      /* ID */

      table->field[0]->store((longlong) tmp->thread_id, TRUE);

      /* USER */

      val= tmp_sctx->user ? tmp_sctx->user :

            (tmp->system_thread ? "system user" : "unauthenticated user");

      table->field[1]->store(val, strlen(val), cs);

      /* HOST */

      if (tmp->peer_port && (tmp_sctx->host || tmp_sctx->ip) &&

          thd->security_ctx->host_or_ip[0])

      {

        char host[LIST_PROCESS_HOST_LEN + 1];

        my_snprintf(host, LIST_PROCESS_HOST_LEN, "%s:%u",

                    tmp_sctx->host_or_ip, tmp->peer_port);

        table->field[2]->store(host, strlen(host), cs);

      }

      else

        table->field[2]->store(tmp_sctx->host_or_ip,

                               strlen(tmp_sctx->host_or_ip), cs);

      /* DB */

      if (tmp->db)

      {

        table->field[3]->store(tmp->db, strlen(tmp->db), cs);

        table->field[3]->set_notnull();

      }



      if ((mysys_var= tmp->mysys_var))

        pthread_mutex_lock(&mysys_var->mutex);

      /* COMMAND */

      if ((val= (char *) (tmp->killed == THD::KILL_CONNECTION? "Killed" : 0)))

        table->field[4]->store(val, strlen(val), cs);

      else

        table->field[4]->store(command_name[tmp->command].str,

                               command_name[tmp->command].length, cs);

      /* TIME */

      table->field[5]->store((uint32)(tmp->start_time ?

                                      now - tmp->start_time : 0), TRUE);

      /* STATE */

#ifndef EMBEDDED_LIBRARY

      val= (char*) (tmp->locked ? "Locked" :

                    tmp->net.reading_or_writing ?

                    (tmp->net.reading_or_writing == 2 ?

                     "Writing to net" :

                     tmp->command == COM_SLEEP ? "" :

                     "Reading from net") :

                    tmp->proc_info ? tmp->proc_info :

                    tmp->mysys_var &&

                    tmp->mysys_var->current_cond ?

                    "Waiting on cond" : NullS);

#else

      val= (char *) "Writing to net";

#endif

      if (val)

      {

        table->field[6]->store(val, strlen(val), cs);

        table->field[6]->set_notnull();

      }



      if (mysys_var)

        pthread_mutex_unlock(&mysys_var->mutex);



      /* INFO */

      if (tmp->query)

      {

        table->field[7]->store(tmp->query,

                               min(max_query_length, tmp->query_length), cs);

        table->field[7]->set_notnull();

      }



      if (schema_table_store_record(thd, table))

      {

        VOID(pthread_mutex_unlock(&LOCK_thread_count));

        DBUG_RETURN(1);

      }

    }

  }



  VOID(pthread_mutex_unlock(&LOCK_thread_count));

  DBUG_RETURN(0);

}



/*****************************************************************************

  Status functions

*****************************************************************************/
@@ -4945,6 +5058,20 @@ ST_FIELD_INFO variables_fields_info[]= 
};





ST_FIELD_INFO processlist_fields_info[]=

{

  {"ID", 4, MYSQL_TYPE_LONG, 0, 0, "Id"},

  {"USER", 16, MYSQL_TYPE_STRING, 0, 0, "User"},

  {"HOST", LIST_PROCESS_HOST_LEN,  MYSQL_TYPE_STRING, 0, 0, "Host"},

  {"DB", NAME_LEN, MYSQL_TYPE_STRING, 0, 1, "Db"},

  {"COMMAND", 16, MYSQL_TYPE_STRING, 0, 0, "Command"},

  {"TIME", 4, MYSQL_TYPE_LONG, 0, 0, "Time"},

  {"STATE", 30, MYSQL_TYPE_STRING, 0, 1, "State"},

  {"INFO", PROCESS_LIST_WIDTH, MYSQL_TYPE_STRING, 0, 1, "Info"},

  {0, 0, MYSQL_TYPE_STRING, 0, 0, 0}

};





ST_FIELD_INFO plugin_fields_info[]=

{

  {"PLUGIN_NAME", NAME_LEN, MYSQL_TYPE_STRING, 0, 0, "Name"},
@@ -5035,6 +5162,8 @@ ST_SCHEMA_TABLE schema_tables[]= 
   get_all_tables, 0, get_schema_partitions_record, 1, 2, 0},

  {"PLUGINS", plugin_fields_info, create_schema_table,

    fill_plugins, make_old_format, 0, -1, -1, 0},

  {"PROCESSLIST", processlist_fields_info, create_schema_table,

    fill_schema_processlist, make_old_format, 0, -1, -1, 0},

  {"ROUTINES", proc_fields_info, create_schema_table, 

    fill_schema_proc, make_proc_old_format, 0, -1, -1, 0},

  {"SCHEMATA", schema_fields_info, create_schema_table,

sql/table.h

+1 −0
Original line number Diff line number Diff line
@@ -344,6 +344,7 @@ enum enum_schema_tables 
  SCH_OPEN_TABLES,

  SCH_PARTITIONS,

  SCH_PLUGINS,

  SCH_PROCESSLIST,

  SCH_PROCEDURES,

  SCH_SCHEMATA,

  SCH_SCHEMA_PRIVILEGES,