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Commit 76d852d4 authored by Michael Widenius's avatar Michael Widenius
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Automatic merge

parents 745c53ec b653115c
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Showing with 81 additions and 37 deletions
mysql-test/mysql-test-run.pl
View file @ 76d852d4
......@@ -5145,10 +5145,10 @@ sub mysqld_start ($$) {
# Write a message about this to the normal log file
my $trace_name= "$opt_vardir/log/".$mysqld->name().".trace";
mtr_tofile($output,
"NOTE: When running with --valgrind --debug the output from",
"mysqld(where the valgrind messages shows up) is stored ",
"NOTE: When running with --valgrind --debug the output from ",
"mysqld (where the valgrind messages shows up) is stored ",
"together with the trace file to make it ",
"easier to find the exact position of valgrind errors.",
"easier to find the exact position of valgrind errors. ",
"See trace file $trace_name.\n");
$output= $trace_name;
......
mysql-test/r/query_cache.result
View file @ 76d852d4
......@@ -912,13 +912,13 @@ a
a
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 0
Qcache_queries_in_cache 1
show status like "Qcache_inserts";
Variable_name Value
Qcache_inserts 18
Qcache_inserts 19
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 6
Qcache_hits 7
DROP TABLE t1;
SET GLOBAL query_cache_size=0;
SET SESSION query_cache_type = 2;
......@@ -1070,10 +1070,10 @@ flush status;
a
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 0
Qcache_queries_in_cache 1
show status like "Qcache_inserts";
Variable_name Value
Qcache_inserts 0
Qcache_inserts 1
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 0
......@@ -1081,13 +1081,30 @@ Qcache_hits 0
a
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 0
Qcache_queries_in_cache 1
show status like "Qcache_inserts";
Variable_name Value
Qcache_inserts 0
Qcache_inserts 1
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 0
Qcache_hits 1
set global query_cache_strip_comments=1;
(select a from t1) union (select a from t1);
a
(select a from t1) /* */union (select a from t1);
a
set global query_cache_strip_comments=0;
(select a from t1) union (select a from t1);
a
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 1
show status like "Qcache_inserts";
Variable_name Value
Qcache_inserts 1
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 4
drop table t1;
create table t1 (a int);
insert into t1 values (1),(2);
......
mysql-test/t/query_cache.test
View file @ 76d852d4
......@@ -776,7 +776,19 @@ show status like "Qcache_hits";
show status like "Qcache_queries_in_cache";
show status like "Qcache_inserts";
show status like "Qcache_hits";
set global query_cache_strip_comments=1;
(select a from t1) union (select a from t1);
(select a from t1) /* */union (select a from t1);
set global query_cache_strip_comments=0;
(select a from t1) union (select a from t1);
show status like "Qcache_queries_in_cache";
show status like "Qcache_inserts";
show status like "Qcache_hits";
drop table t1;
#
# SP cursors and selects with query cache (BUG#9715)
#
create table t1 (a int);
......
sql/mysql_priv.h
View file @ 76d852d4
......@@ -1045,6 +1045,7 @@ struct Query_cache_query_flags
MY_LOCALE *lc_time_names;
};
#define QUERY_CACHE_FLAGS_SIZE sizeof(Query_cache_query_flags)
#define QUERY_CACHE_DB_LENGTH_SIZE 2
#include "sql_cache.h"
#define query_cache_store_query(A, B) query_cache.store_query(A, B)
#define query_cache_destroy() query_cache.destroy()
......
sql/sp_head.cc
View file @ 76d852d4
......@@ -1024,17 +1024,18 @@ subst_spvars(THD *thd, sp_instr *instr, LEX_STRING *query_str)
buffer :==
<statement> The input statement(s)
'\0' Terminating null char
<length> Length of following current database name (size_t)
<length> Length of following current database name 2
<db_name> Name of current database
<flags> Flags struct
*/
buf_len= qbuf.length() + 1 + sizeof(size_t) + thd->db_length +
QUERY_CACHE_FLAGS_SIZE + 1;
buf_len= (qbuf.length() + 1 + QUERY_CACHE_DB_LENGTH_SIZE + thd->db_length +
QUERY_CACHE_FLAGS_SIZE + 1);
if ((pbuf= (char *) alloc_root(thd->mem_root, buf_len)))
{
char *ptr= pbuf + qbuf.length();
memcpy(pbuf, qbuf.ptr(), qbuf.length());
pbuf[qbuf.length()]= 0;
memcpy(pbuf+qbuf.length()+1, (char *) &thd->db_length, sizeof(size_t));
*ptr= 0;
int2store(ptr+1, thd->db_length);
}
else
DBUG_RETURN(TRUE);
......
sql/sql_cache.cc
View file @ 76d852d4
......@@ -462,6 +462,7 @@ static void make_base_query(String *new_query,
DBUG_ASSERT(query[query_length] == 0);
DBUG_ASSERT(!is_white_space(query[0]));
new_query->length(0); // Don't copy anything from old buffer
if (new_query->realloc(query_length + additional_length))
{
/*
......@@ -540,8 +541,11 @@ insert_space:
}
if (buffer == last_space)
buffer--; // Remove the last space
*buffer= 0;
*buffer= 0; // End zero after query
new_query->length((size_t) (buffer - new_query->ptr()));
/* Copy db_length */
memcpy(buffer+1, query_end+1, QUERY_CACHE_DB_LENGTH_SIZE);
}
......@@ -1473,8 +1477,8 @@ def_week_frmt: %lu, in_trans: %d, autocommit: %d",
/* Key is query + database + flag */
if (thd->db_length)
{
memcpy((char*) (query + query_length + 1 + sizeof(size_t)), thd->db,
thd->db_length);
memcpy((char*) (query + query_length + 1 + QUERY_CACHE_DB_LENGTH_SIZE),
thd->db, thd->db_length);
DBUG_PRINT("qcache", ("database: %s length: %u",
thd->db, (unsigned) thd->db_length));
}
......@@ -1482,8 +1486,8 @@ def_week_frmt: %lu, in_trans: %d, autocommit: %d",
{
DBUG_PRINT("qcache", ("No active database"));
}
tot_length= query_length + thd->db_length + 1 + sizeof(size_t) +
QUERY_CACHE_FLAGS_SIZE;
tot_length= (query_length + thd->db_length + 1 +
QUERY_CACHE_DB_LENGTH_SIZE + QUERY_CACHE_FLAGS_SIZE);
/*
We should only copy structure (don't use it location directly)
because of alignment issue
......@@ -1642,7 +1646,7 @@ Query_cache::send_result_to_client(THD *thd, char *org_sql, uint query_length)
Query_cache_block_table *block_table, *block_table_end;
ulong tot_length;
Query_cache_query_flags flags;
const char *sql, *sql_end;
const char *sql, *sql_end, *found_brace= 0;
DBUG_ENTER("Query_cache::send_result_to_client");
/*
......@@ -1716,9 +1720,16 @@ Query_cache::send_result_to_client(THD *thd, char *org_sql, uint query_length)
case '\n':
case '\t':
case ' ':
case '(': // To handle (select a from t1) union (select a from t1);
sql++;
continue;
case '(': // To handle (select a from t1) union (select a from t1);
if (!found_brace)
{
found_brace= sql;
sql++;
continue;
}
/* fall trough */
default:
break;
}
......@@ -1752,8 +1763,7 @@ Query_cache::send_result_to_client(THD *thd, char *org_sql, uint query_length)
sure the new current database has a name with the same length
as the previous one.
*/
size_t db_len;
memcpy((char *) &db_len, (sql + query_length + 1), sizeof(size_t));
size_t db_len= uint2korr(sql_end+1);
if (thd->db_length != db_len)
{
/*
......@@ -1788,8 +1798,11 @@ Query_cache::send_result_to_client(THD *thd, char *org_sql, uint query_length)
Query_cache_block *query_block;
if (opt_query_cache_strip_comments)
{
if (found_brace)
sql= found_brace;
make_base_query(&thd->base_query, sql, (size_t) (sql_end - sql),
thd->db_length + 1 + QUERY_CACHE_FLAGS_SIZE);
thd->db_length + 1 + QUERY_CACHE_DB_LENGTH_SIZE +
QUERY_CACHE_FLAGS_SIZE);
sql= thd->base_query.ptr();
query_length= thd->base_query.length();
}
......@@ -1799,15 +1812,15 @@ Query_cache::send_result_to_client(THD *thd, char *org_sql, uint query_length)
thd->base_query.set(sql, query_length, system_charset_info);
}
tot_length= query_length + 1 + sizeof(size_t) +
thd->db_length + QUERY_CACHE_FLAGS_SIZE;
tot_length= (query_length + 1 + QUERY_CACHE_DB_LENGTH_SIZE +
thd->db_length + QUERY_CACHE_FLAGS_SIZE);
if (thd->db_length)
{
memcpy((char*) (sql+query_length+1+ sizeof(size_t)), thd->db,
thd->db_length);
memcpy((uchar*) sql + query_length + 1 + QUERY_CACHE_DB_LENGTH_SIZE,
thd->db, thd->db_length);
DBUG_PRINT("qcache", ("database: '%s' length: %u",
thd->db, (unsigned)thd->db_length));
thd->db, (uint) thd->db_length));
}
else
{
......@@ -1929,7 +1942,7 @@ def_week_frmt: %lu, in_trans: %d, autocommit: %d",
{
DBUG_PRINT("qcache",
("Temporary table detected: '%s.%s'",
table_list.db, table_list.alias));
tmptable->s->db.str, tmptable->alias.c_ptr()));
unlock();
/*
We should not store result of this query because it contain
......
sql/sql_parse.cc
View file @ 76d852d4
......@@ -508,10 +508,10 @@ static void handle_bootstrap_impl(THD *thd)
query= (char *) thd->memdup_w_gap(buff, length + 1,
thd->db_length + 1 +
QUERY_CACHE_DB_LENGTH_SIZE +
QUERY_CACHE_FLAGS_SIZE);
size_t db_len= 0;
memcpy(query + length + 1, (char *) &db_len, sizeof(size_t));
thd->set_query(query, length);
int2store(query + length + 1, 0); // No db in bootstrap
DBUG_PRINT("query",("%-.4096s", thd->query()));
#if defined(ENABLED_PROFILING) && defined(COMMUNITY_SERVER)
thd->profiling.start_new_query();
......@@ -1880,7 +1880,8 @@ bool alloc_query(THD *thd, const char *packet, uint packet_length)
*/
if (! (query= (char*) thd->memdup_w_gap(packet,
packet_length,
1 + sizeof(size_t) + thd->db_length +
1 + thd->db_length +
QUERY_CACHE_DB_LENGTH_SIZE +
QUERY_CACHE_FLAGS_SIZE)))
return TRUE;
query[packet_length]= '\0';
......@@ -1889,8 +1890,7 @@ bool alloc_query(THD *thd, const char *packet, uint packet_length)
also store this length, in case current database is changed during
execution. We might need to reallocate the 'query' buffer
*/
char *len_pos = (query + packet_length + 1);
memcpy(len_pos, (char *) &thd->db_length, sizeof(size_t));
int2store(query + packet_length + 1, thd->db_length);
thd->set_query(query, packet_length);
......
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