Removed compiler warnings.

Added new operators to be used with gcc 3.0.x
Update of query cache code.
Added semaphores for Windows (not yet in use)
Added pthread_mutex_trylock for windows.


Docs/manual.texi:
  Update of query cache info.
Docs/section.Comparisons.texi:
  Added indexing.
client/mysqlbinlog.cc:
  Removed compiler warnings.
client/mysqltest.c:
  Added enable_result_log/disable_result_log
include/config-win.h:
  Added support of semaphores on Windows.
include/my_pthread.h:
  Added pthread_mutex_trylock for windows.
include/my_sys.h:
  Cleanup
libmysql/libmysql.c:
  Fixed bug in mysql_use_result() (When reusing connections).
myisam/ft_boolean_search.c:
  Removed compiler warnings
myisam/ft_nlq_search.c:
  Removed compiler warnings
myisam/ft_update.c:
  Removed compiler warnings
mysql-test/r/query_cache.result:
  New tests
mysql-test/t/query_cache-master.opt:
  New tests
mysql-test/t/query_cache.test:
  New tests
mysys/Makefile.am:
  Added new operators to be used with gcc 3.0.x
sql/filesort.cc:
  Removed compiler warnings
sql/item_func.cc:
  Removed compiler warnings
sql/mysql_priv.h:
  Removed compiler warnings
sql/mysqld.cc:
  Update of query cache code.
sql/slave.cc:
  Removed compiler warnings.
  Code cleanup (Indentation)
sql/sql_cache.cc:
  Updated code
sql/sql_cache.h:
  Updated code
sql/sql_repl.cc:
  Removed compiler warnings
sql/sql_yacc.yy:
  Updated query cache

3 files changed, 422 insertions, 3 deletions

diff --git a/mysql-test/r/query_cache.result b/mysql-test/r/query_cache.result
index ac6962bfd9d..f16c72d148a 100644
--- a/mysql-test/r/query_cache.result
+++ b/mysql-test/r/query_cache.result
@@ -1,6 +1,6 @@
 reset query cache;
 flush status;
-drop table if exists t1;
+drop table if exists t1,t2,t3;
 create table t1 (a int not null);
 insert into t1 values (1),(2),(3);
 select * from t1;
@@ -36,3 +36,265 @@ drop table t1;
 show status like "Qcache_queries_in_cache";
 Variable_name	Value
 Qcache_queries_in_cache	0
+create table t1 (a int not null);
+insert into t1 values (1),(2),(3);
+create table t2 (a int not null);
+insert into t2 values (4),(5),(6);
+create table t3 (a int not null) type=MERGE UNION=(t1,t2) INSERT_METHOD=FIRST;
+select * from t3;
+a
+1
+2
+3
+4
+5
+6
+select * from t3;
+a
+1
+2
+3
+4
+5
+6
+show status like "Qcache_hits";
+Variable_name	Value
+Qcache_hits	2
+show status like "Qcache_queries_in_cache";
+Variable_name	Value
+Qcache_queries_in_cache	1
+insert into t2  values (7);
+show status like "Qcache_queries_in_cache";
+Variable_name	Value
+Qcache_queries_in_cache	0
+select * from t1;
+a
+1
+2
+3
+select * from t1;
+a
+1
+2
+3
+show status like "Qcache_hits";
+Variable_name	Value
+Qcache_hits	3
+show status like "Qcache_queries_in_cache";
+Variable_name	Value
+Qcache_queries_in_cache	1
+insert into t3 values (8);
+show status like "Qcache_queries_in_cache";
+Variable_name	Value
+Qcache_queries_in_cache	0
+select * from t3;
+a
+1
+2
+3
+8
+4
+5
+6
+7
+show status like "Qcache_queries_in_cache";
+Variable_name	Value
+Qcache_queries_in_cache	1
+update t2 set a=9 where a=7;
+show status like "Qcache_queries_in_cache";
+Variable_name	Value
+Qcache_queries_in_cache	0
+select * from t1;
+a
+1
+2
+3
+8
+show status like "Qcache_queries_in_cache";
+Variable_name	Value
+Qcache_queries_in_cache	1
+update t3 set a=10 where a=1;
+show status like "Qcache_queries_in_cache";
+Variable_name	Value
+Qcache_queries_in_cache	0
+select * from t3;
+a
+10
+2
+3
+8
+4
+5
+6
+9
+show status like "Qcache_queries_in_cache";
+Variable_name	Value
+Qcache_queries_in_cache	1
+delete from t2 where a=9;
+show status like "Qcache_queries_in_cache";
+Variable_name	Value
+Qcache_queries_in_cache	0
+select * from t1;
+a
+10
+2
+3
+8
+show status like "Qcache_queries_in_cache";
+Variable_name	Value
+Qcache_queries_in_cache	1
+delete from t3 where a=10;
+show status like "Qcache_queries_in_cache";
+Variable_name	Value
+Qcache_queries_in_cache	0
+drop table t1, t2, t3;
+set autocommit=0;
+create table t1 (a int not null) type=innodb;
+insert into t1 values (1),(2),(3);
+select * from t1;
+a
+1
+2
+3
+show status like "Qcache_queries_in_cache";
+Variable_name	Value
+Qcache_queries_in_cache	0
+drop table t1;
+commit;
+set autocommit=1;
+create table t1 (a int not null);
+insert into t1 values (1),(2),(3);
+create table t2 (a int not null);
+insert into t2 values (1),(2),(3);
+select * from t1;
+a
+1
+2
+3
+select * from t2;
+a
+1
+2
+3
+insert into t1 values (4);
+show status like "Qcache_free_blocks";
+Variable_name	Value
+Qcache_free_blocks	2
+flush query cache;
+show status like "Qcache_free_blocks";
+Variable_name	Value
+Qcache_free_blocks	1
+drop table t1, t2;
+set sql_query_cache_type=demand;
+create table t1 (a int not null);
+insert into t1 values (1),(2),(3);
+select * from t1;
+a
+1
+2
+3
+show status like "Qcache_queries_in_cache";
+Variable_name	Value
+Qcache_queries_in_cache	0
+select sql_cache * from t1;
+a
+1
+2
+3
+set sql_query_cache_type=2;
+select sql_cache * from t1;
+a
+1
+2
+3
+show status like "Qcache_hits";
+Variable_name	Value
+Qcache_hits	4
+show status like "Qcache_queries_in_cache";
+Variable_name	Value
+Qcache_queries_in_cache	1
+set sql_query_cache_type=on;
+reset query cache;
+show status like "Qcache_queries_in_cache";
+Variable_name	Value
+Qcache_queries_in_cache	0
+select sql_no_cache * from t1;
+a
+1
+2
+3
+show status like "Qcache_queries_in_cache";
+Variable_name	Value
+Qcache_queries_in_cache	0
+drop table t1;
+create table t1 (a text not null);
+select CONNECTION_ID() from t1;
+CONNECTION_ID()
+select FOUND_ROWS();
+FOUND_ROWS()
+0
+select NOW() from t1;
+NOW()
+select CURDATE() from t1;
+CURDATE()
+select CURTIME() from t1;
+CURTIME()
+select DATABASE() from t1;
+DATABASE()
+select ENCRYPT("test") from t1;
+ENCRYPT("test")
+select LAST_INSERT_ID() from t1;
+last_insert_id()
+select RAND() from t1;
+RAND()
+select UNIX_TIMESTAMP() from t1;
+UNIX_TIMESTAMP()
+select USER() from t1;
+USER()
+select benchmark(1,1) from t1;
+benchmark(1,1)
+show status like "Qcache_queries_in_cache";
+Variable_name	Value
+Qcache_queries_in_cache	0
+create table t2 (a text not null);
+insert into t1 values("1111111111111111111111111111111111111111111111111111");
+insert into t2 select * from t1;
+insert into t1 select * from t2;
+insert into t2 select * from t1;
+insert into t1 select * from t2;
+insert into t2 select * from t1;
+insert into t1 select * from t2;
+insert into t2 select * from t1;
+insert into t1 select * from t2;
+insert into t2 select * from t1;
+insert into t1 select * from t2;
+insert into t2 select * from t1;
+insert into t1 select * from t2;
+insert into t2 select * from t1;
+insert into t1 select * from t2;
+insert into t2 select * from t1;
+insert into t1 select * from t2;
+insert into t2 select * from t1;
+insert into t1 select * from t2;
+drop table t2;
+show status like "Qcache_hits";
+Variable_name	Value
+Qcache_hits	4
+select a as a1, a as a2 from t1;
+select a as a2, a as a3 from t1;
+select a as a3, a as a4 from t1;
+select a as a1, a as a2 from t1;
+show status like "Qcache_hits";
+Variable_name	Value
+Qcache_hits	4
+show status like "Qcache_queries_in_cache";
+Variable_name	Value
+Qcache_queries_in_cache	2
+reset query cache;
+show variables like "query_cache_size";
+Variable_name	Value
+query_cache_size	1039700
+show status like "Qcache_free_memory";
+Variable_name	Value
+Qcache_free_memory	1039700
+drop table t1;
diff --git a/mysql-test/t/query_cache-master.opt b/mysql-test/t/query_cache-master.opt
index 7ff962c2216..5f0ebff98f6 100644
--- a/mysql-test/t/query_cache-master.opt
+++ b/mysql-test/t/query_cache-master.opt
@@ -1 +1 @@
---set-variable=query_cache_size=2M
+--set-variable=query_cache_size=1M
diff --git a/mysql-test/t/query_cache.test b/mysql-test/t/query_cache.test
index 3d1aa70d8b2..e9e138c9b61 100644
--- a/mysql-test/t/query_cache.test
+++ b/mysql-test/t/query_cache.test
@@ -1,3 +1,5 @@
+-- source include/have_innodb.inc
+
 #
 # Tests with query cache
 #
@@ -6,7 +8,12 @@
 
 reset query cache;
 flush status;
-drop table if exists t1;
+drop table if exists t1,t2,t3;
+
+#
+# First simple test
+#
+
 create table t1 (a int not null);
 insert into t1 values (1),(2),(3);
 select * from t1;
@@ -24,3 +31,153 @@ show status like "Qcache_hits";
 drop table t1;
 
 show status like "Qcache_queries_in_cache";
+
+#
+# MERGE TABLES with INSERT/UPDATE and DELETE
+#
+create table t1 (a int not null);
+insert into t1 values (1),(2),(3);
+create table t2 (a int not null);
+insert into t2 values (4),(5),(6);
+create table t3 (a int not null) type=MERGE UNION=(t1,t2) INSERT_METHOD=FIRST;
+# insert
+select * from t3;
+select * from t3;
+show status like "Qcache_hits";
+show status like "Qcache_queries_in_cache";
+insert into t2  values (7);
+show status like "Qcache_queries_in_cache";
+select * from t1;
+select * from t1;
+show status like "Qcache_hits";
+show status like "Qcache_queries_in_cache";
+insert into t3 values (8);
+show status like "Qcache_queries_in_cache";
+# update
+select * from t3;
+show status like "Qcache_queries_in_cache";
+update t2 set a=9 where a=7;
+show status like "Qcache_queries_in_cache";
+select * from t1;
+show status like "Qcache_queries_in_cache";
+update t3 set a=10 where a=1;
+show status like "Qcache_queries_in_cache";
+#delete
+select * from t3;
+show status like "Qcache_queries_in_cache";
+delete from t2 where a=9;
+show status like "Qcache_queries_in_cache";
+select * from t1;
+show status like "Qcache_queries_in_cache";
+delete from t3 where a=10;
+show status like "Qcache_queries_in_cache";
+drop table t1, t2, t3;
+#
+# Without auto_commit.
+#
+set autocommit=0;
+create table t1 (a int not null) type=innodb;
+insert into t1 values (1),(2),(3);
+select * from t1;
+show status like "Qcache_queries_in_cache";
+drop table t1;
+commit;
+set autocommit=1;
+#
+# FLUSH QUERY CACHE
+#
+create table t1 (a int not null);
+insert into t1 values (1),(2),(3);
+create table t2 (a int not null);
+insert into t2 values (1),(2),(3);
+select * from t1;
+select * from t2;
+insert into t1 values (4);
+show status like "Qcache_free_blocks";
+flush query cache;
+show status like "Qcache_free_blocks";
+drop table t1, t2;
+#
+# SELECT SQL_CACHE ...
+#
+set sql_query_cache_type=demand;
+create table t1 (a int not null);
+insert into t1 values (1),(2),(3);
+select * from t1;
+show status like "Qcache_queries_in_cache";
+select sql_cache * from t1;
+set sql_query_cache_type=2;
+select sql_cache * from t1;
+show status like "Qcache_hits";
+show status like "Qcache_queries_in_cache";
+set sql_query_cache_type=on;
+#
+# RESET QUERY CACHE
+#
+reset query cache;
+show status like "Qcache_queries_in_cache";
+#
+# SELECT SQL_NO_CACHE
+#
+select sql_no_cache * from t1;
+show status like "Qcache_queries_in_cache";
+drop table t1;
+#
+# Check that queries that uses NOW(), LAST_INSERT_ID()... are not cached.
+#
+create table t1 (a text not null);
+select CONNECTION_ID() from t1;
+#GET_LOCK
+#RELEASE_LOCK
+#LOAD_FILE
+select FOUND_ROWS();
+select NOW() from t1;
+select CURDATE() from t1;
+select CURTIME() from t1;
+select DATABASE() from t1;
+select ENCRYPT("test") from t1;
+select LAST_INSERT_ID() from t1;
+select RAND() from t1;
+select UNIX_TIMESTAMP() from t1;
+select USER() from t1;
+select benchmark(1,1) from t1;
+show status like "Qcache_queries_in_cache";
+#
+# Tests when the cache is filled
+#
+create table t2 (a text not null);
+insert into t1 values("1111111111111111111111111111111111111111111111111111");
+insert into t2 select * from t1;
+insert into t1 select * from t2; # 2
+insert into t2 select * from t1; # 3
+insert into t1 select * from t2; # 5
+insert into t2 select * from t1; # 8
+insert into t1 select * from t2; # 13
+insert into t2 select * from t1; # 21
+insert into t1 select * from t2; # 34
+insert into t2 select * from t1; # 55
+insert into t1 select * from t2; # 89
+insert into t2 select * from t1; # 144
+insert into t1 select * from t2; # 233
+insert into t2 select * from t1; # 357
+insert into t1 select * from t2; # 610
+insert into t2 select * from t1; # 987
+insert into t1 select * from t2; # 1597
+insert into t2 select * from t1; # 2584
+insert into t1 select * from t2; # 4181
+drop table t2;
+
+show status like "Qcache_hits";
+disable_result_log;
+select a as a1, a as a2 from t1;
+select a as a2, a as a3 from t1;
+select a as a3, a as a4 from t1;
+# next query must be out of 1Mb cache
+select a as a1, a as a2 from t1;
+enable_result_log;
+show status like "Qcache_hits";
+show status like "Qcache_queries_in_cache";
+reset query cache;
+show variables like "query_cache_size";
+show status like "Qcache_free_memory";
+drop table t1;