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Merge april.(none):/home/svoj/devel/mysql/BUG20256/mysql-5.0-engines

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into  april.(none):/home/svoj/devel/mysql/BUG20256/mysql-5.1-engines
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svoj@april.(none)
2006-09-12 18:42:10 +05:00
parent aeae764e64 44f167ee1d
commit 6e13c29717
6 changed files with 52 additions and 5 deletions
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32
mysql-test/include/index_merge1.inc
View File

@ -407,3 +407,35 @@ explain select * from t3 where a=1 and b=1;
drop table t3;
drop table t0, t1, t2;
}
#
# BUG#20256 - LOCK WRITE - MyISAM
#
CREATE TABLE t1(a INT);
INSERT INTO t1 VALUES(1);
CREATE TABLE t2(a INT, b INT, dummy CHAR(16) DEFAULT '', KEY(a), KEY(b));
INSERT INTO t2(a,b) VALUES
(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
(1,2);
LOCK TABLES t1 WRITE, t2 WRITE;
INSERT INTO t2(a,b) VALUES(1,2);
SELECT t2.a FROM t1,t2 WHERE t2.b=2 AND t2.a=1;
UNLOCK TABLES;
DROP TABLE t1, t2;

8
sql/ha_myisam.cc
View File

@ -147,6 +147,14 @@ ha_myisam::ha_myisam(TABLE_SHARE *table_arg)
can_enable_indexes(1)
{}
handler *ha_myisam::clone(MEM_ROOT *mem_root)
{
ha_myisam *new_handler= static_cast <ha_myisam *>(handler::clone(mem_root));
if (new_handler)
new_handler->file->state= file->state;
return new_handler;
}
static const char *ha_myisam_exts[] = {
".MYI",

1
sql/ha_myisam.h
View File

@ -45,6 +45,7 @@ class ha_myisam: public handler
public:
ha_myisam(TABLE_SHARE *table_arg);
~ha_myisam() {}
handler *clone(MEM_ROOT *mem_root);
const char *table_type() const { return "MyISAM"; }
const char *index_type(uint key_number);
const char **bas_ext() const;

9
sql/handler.cc
View File

@ -1416,6 +1416,15 @@ int ha_delete_table(THD *thd, handlerton *table_type, const char *path,
/****************************************************************************
** General handler functions
****************************************************************************/
handler *handler::clone(MEM_ROOT *mem_root)
{
handler *new_handler= get_new_handler(table, mem_root, table->s->db_type);
if (new_handler && !new_handler->ha_open(table->s->path, table->db_stat,
HA_OPEN_IGNORE_IF_LOCKED))
return new_handler;
return NULL;
}
void handler::ha_statistic_increment(ulong SSV::*offset) const

1
sql/handler.h
View File

@ -942,6 +942,7 @@ public:
{
/* TODO: DBUG_ASSERT(inited == NONE); */
}
virtual handler *clone(MEM_ROOT *mem_root);
/* This is called after create to allow us to set up cached variables */
void init()
{

6
sql/opt_range.cc
View File

@ -1164,11 +1164,7 @@ int QUICK_RANGE_SELECT::init_ror_merged_scan(bool reuse_handler)
}
thd= head->in_use;
if (!(file= get_new_handler(head->s, thd->mem_root, head->s->db_type)))
goto failure;
DBUG_PRINT("info", ("Allocated new handler 0x%lx", (long) file));
if (file->ha_open(head, head->s->normalized_path.str, head->db_stat,
HA_OPEN_IGNORE_IF_LOCKED))
if (!(file= head->file->clone(thd->mem_root)))
{
/* Caller will free the memory */
goto failure;