- Reduced memory requirements for mysqltest to 1/4.th This also gave a...

- Reduced memory requirements for mysqltest to 1/4.th  This also gave a speedup for 5x for some tests.
- Reduced memory usage from safe_mutex.
- Fixed problem with failing tests that could not restart mysqld becasue the port was reserved
- More DBUG information
- Fixed bug where bitmap_set_prefix() wrote over buffer area.
- Initialize n_pages_flushed in xtradb which was used uninitialized.

client/mysqltest.cc:
  Reduced memory usage (400K -> 80 for simple test;  400M -> 70M for some other tests)
  - Smaller dynamic arrays at start
  - Made 'st_connection' significantly smaller by allocation 'mysql' on demand in mysql_init() and storing require_file in a mem_root.
  - Fixed that when one does --debug we get information from safemalloc in the trace
  (Most of changes are changing &connect->mysql to connect->mysql
libmysql/libmysql.c:
  Don't call mysql_thread_end() if my_init() was called outside of mysql_server_init()
  This is needed to get information from my_end() into the DBUG log
mysql-test/README:
  Fixed wrong comment
mysql-test/mysql-test-run.pl:
  Reserv 20 ports / mysql-test-run thread.
  (Needed as some tests uses 9 mysqld servers)
mysys/hash.c:
  More DBUG information
mysys/my_bitmap.c:
  Fixed bug where bitmap_set_prefix() wrote over buffer area.
mysys/safemalloc.c:
  More DBUG information
mysys/thr_mutex.c:
  Initialize smaller arrays be default.
sql-common/client.c:
  More DBUG_PRINT
storage/xtradb/srv/srv0srv.c:
  Initialize n_pages_flushed which was used uninitialized.

libmysql/libmysql.c

@@ -211,11 +211,19 @@ void STDCALL mysql_server_end()
   {
     my_end(0);
   }
+#ifdef NOT_NEEDED
+  /*
+    The following is not needed as if the program explicitely called
+    my_init() then we can assume it will also call my_end().
+    The reason to not also do it here is in that case we can't get
+    statistics from my_end() to debug log.
+  */
   else
   {
     free_charsets();
     mysql_thread_end();
   }
+#endif
 
   mysql_client_init= org_my_init_done= 0;
 #ifdef EMBEDDED_SERVER

mysql-test/README

@@ -60,7 +60,7 @@ extension. For example:
 
  mysql test < t/test_case_name.test > r/test_case_name.result
 
- mysqltest --record --record-file=r/test_case_name.result < t/test_case_name.test
+ mysqltest --record --database test --result-file=r/test_case_name.result < t/test_case_name.test
 
  When this is done, take a look at r/test_case_name.result
  - If the result is incorrect, you have found a bug. In this case, you should

mysql-test/mysql-test-run.pl

@@ -1634,16 +1634,16 @@ sub set_build_thread_ports($) {
   $ENV{MTR_BUILD_THREAD}= $build_thread;
 
   # Calculate baseport
-  $baseport= $build_thread * 10 + 10000;
-  if ( $baseport < 5001 or $baseport + 9 >= 32767 )
+  $baseport= $build_thread * 20 + 10000;
+  if ( $baseport < 5001 or $baseport + 19 >= 32767 )
   {
     mtr_error("MTR_BUILD_THREAD number results in a port",
               "outside 5001 - 32767",
-              "($baseport - $baseport + 9)");
+              "($baseport - $baseport + 19)");
   }
 
   mtr_report("Using MTR_BUILD_THREAD $build_thread,",
-	     "with reserved ports $baseport..".($baseport+9));
+	     "with reserved ports $baseport..".($baseport+19));
 
 }
 

mysys/hash.c

@@ -130,7 +130,8 @@ static inline void my_hash_free_elements(HASH *hash)
 void my_hash_free(HASH *hash)
 {
   DBUG_ENTER("my_hash_free");
-  DBUG_PRINT("enter",("hash: 0x%lx", (long) hash));
+  DBUG_PRINT("enter",("hash: 0x%lx  elements: %ld",
+                      (long) hash, hash->records));
 
   my_hash_free_elements(hash);
   hash->free= 0;

mysys/my_bitmap.c

@@ -274,7 +274,10 @@ void bitmap_set_prefix(MY_BITMAP *map, uint prefix_size)
     memset(m, 0xff, prefix_bytes);
   m+= prefix_bytes;
   if ((prefix_bits= prefix_size & 7))
+  {
     *m++= (1 << prefix_bits)-1;
+    prefix_bytes++;
+  }
   if ((d= no_bytes_in_map(map)-prefix_bytes))
     bzero(m, d);
 }

mysys/safemalloc.c

@@ -124,7 +124,8 @@ void *_mymalloc(size_t size, const char *filename, uint lineno, myf MyFlags)
   struct st_irem *irem;
   uchar *data;
   DBUG_ENTER("_mymalloc");
-  DBUG_PRINT("enter",("Size: %lu", (ulong) size));
+  DBUG_PRINT("enter",("Size: %lu  Total alloc: %lu", (ulong) size,
+                      sf_malloc_cur_memory));
 
   if (!sf_malloc_quick)
     (void) _sanity (filename, lineno);
@@ -316,6 +317,7 @@ void _myfree(void *ptr, const char *filename, uint lineno, myf myflags)
   sf_malloc_cur_memory-= irem->datasize;
   sf_malloc_count--;
   pthread_mutex_unlock(&THR_LOCK_malloc);
+  DBUG_PRINT("info", ("bytes freed: %ld", irem->datasize));
 
 #ifndef HAVE_valgrind
   /* Mark this data as free'ed */

mysys/thr_mutex.c

@@ -170,13 +170,13 @@ static int safe_mutex_lazy_init_deadlock_detection(safe_mutex_t *mp)
   pthread_mutex_lock(&THR_LOCK_mutex);
   mp->id= ++safe_mutex_id;
   pthread_mutex_unlock(&THR_LOCK_mutex);
-  hash_init(mp->locked_mutex, &my_charset_bin,
-            1000,
+  hash_init2(mp->locked_mutex, 64, &my_charset_bin,
+             128,
              offsetof(safe_mutex_deadlock_t, id),
              sizeof(mp->id),
              0, 0, HASH_UNIQUE);
-  hash_init(mp->used_mutex, &my_charset_bin,
-            1000,
+  hash_init2(mp->used_mutex, 64, &my_charset_bin,
+             128,
              offsetof(safe_mutex_t, id),
              sizeof(mp->id),
              0, 0, HASH_UNIQUE);

sql-common/client.c

@@ -1590,6 +1590,7 @@ mysql_init(MYSQL *mysql)
   */
   mysql->reconnect= 0;
 
+  DBUG_PRINT("mysql",("mysql: 0x%lx", (long) mysql));
   return mysql;
 }
 
@@ -2776,6 +2777,8 @@ void mysql_detach_stmt_list(LIST **stmt_list __attribute__((unused)),
 void STDCALL mysql_close(MYSQL *mysql)
 {
   DBUG_ENTER("mysql_close");
+  DBUG_PRINT("enter", ("mysql: 0x%lx", (long) mysql));
+
   if (mysql)					/* Some simple safety */
   {
     /* If connection is still up, send a QUIT message */

storage/xtradb/srv/srv0srv.c

@@ -2742,6 +2742,8 @@ loop:
 
 	n_ios_very_old = log_sys->n_log_ios + buf_pool->stat.n_pages_read
 		+ buf_pool->stat.n_pages_written;
+        n_pages_flushed= 0;
+
 	mutex_enter(&kernel_mutex);
 
 	/* Store the user activity counter at the start of this loop */