"Add new function my_hash_const_element(), the const equivalent of
my_hash_element()" - comes from facebook/mysql-5.6,
7c869d34b9fa2262b941efd6363a260b7c37948f
Reduced number of my_hash_sort_bin() calls from 4 to 1 per query.
Reduced number of memory accesses done by my_hash_sort_bin().
Details:
- let MDL subsystem use pre-calculated hash value for hash
inserts and deletes
- let table cache use pre-calculated MDL hash value
- MDL namespace is excluded from hash value calculation, so that
hash value can be used by table cache as is
- hash value for MDL is calculated as resulting hash value + MDL
namespace
- extended hash implementation to accept user defined hash function
includes:
* remove some remnants of "Bug#14521864: MYSQL 5.1 TO 5.5 BUGS PARTITIONING"
* introduce LOCK_share, now LOCK_ha_data is strictly for engines
* rea_create_table() always creates .par file (even in "frm-only" mode)
* fix a 5.6 bug, temp file leak on dummy ALTER TABLE
Base code and idea from a patch from by plinux at Taobao.
The idea is that we mark all memory that are thread specific with MY_THREAD_SPECIFIC.
Memory counting is done per thread in the my_malloc_size_cb_func callback function from my_malloc().
There are plenty of new asserts to ensure that for a debug server the counting is correct.
Information_schema.processlist gets two new columns: MEMORY_USED and EXAMINED_ROWS.
- The later is there mainly to show how query is progressing.
The following changes in interfaces was needed to get this to work:
- init_alloc_root() amd init_sql_alloc() has extra option so that one can mark memory with MY_THREAD_SPECIFIC
- One now have to use alloc_root_set_min_malloc() to set min memory to be allocated by alloc_root()
- my_init_dynamic_array() has extra option so that one can mark memory with MY_THREAD_SPECIFIC
- my_net_init() has extra option so that one can mark memory with MY_THREAD_SPECIFIC
- Added flag for hash_init() so that one can mark hash table to be thread specific.
- Added flags to init_tree() so that one can mark tree to be thread specific.
- Removed with_delete option to init_tree(). Now one should instead use MY_TREE_WITH_DELETE_FLAG.
- Added flag to Warning_info::Warning_info() if the structure should be fully initialized.
- String elements can now be marked as thread specific.
- Internal HEAP tables are now marking it's memory as MY_THREAD_SPECIFIC.
- Changed type of myf from int to ulong, as this is always a set of bit flags.
Other things:
- Removed calls to net_end() and thd->cleanup() as these are now done in ~THD()
- We now also show EXAMINED_ROWS in SHOW PROCESSLIST
- Added new variable 'memory_used'
- Fixed bug where kill_threads_for_user() was using the wrong mem_root to allocate memory.
- Removed calls to the obsoleted function init_dynamic_array()
- Use set_current_thd() instead of my_pthread_setspecific_ptr(THR_THD,...)
client/completion_hash.cc:
Updated call to init_alloc_root()
client/mysql.cc:
Updated call to init_alloc_root()
client/mysqlbinlog.cc:
init_dynamic_array() -> my_init_dynamic_array()
Updated call to init_alloc_root()
client/mysqlcheck.c:
Updated call to my_init_dynamic_array()
client/mysqldump.c:
Updated call to init_alloc_root()
client/mysqltest.cc:
Updated call to init_alloc_root()
Updated call to my_init_dynamic_array()
Fixed compiler warnings
extra/comp_err.c:
Updated call to my_init_dynamic_array()
extra/resolve_stack_dump.c:
Updated call to my_init_dynamic_array()
include/hash.h:
Added HASH_THREAD_SPECIFIC
include/heap.h:
Added flag is internal temporary table.
include/my_dir.h:
Safety fix: Ensure that MY_DONT_SORT and MY_WANT_STAT don't interfer with other mysys flags
include/my_global.h:
Changed type of myf from int to ulong, as this is always a set of bit flags.
include/my_sys.h:
Added MY_THREAD_SPECIFIC and MY_THREAD_MOVE
Added malloc_flags to DYNAMIC_ARRAY
Added extra mysys flag argument to my_init_dynamic_array()
Removed deprecated functions init_dynamic_array() and my_init_dynamic_array.._ci
Updated paramaters for init_alloc_root()
include/my_tree.h:
Added my_flags to allow one to use MY_THREAD_SPECIFIC with hash tables.
Removed with_delete. One should now instead use MY_TREE_WITH_DELETE_FLAG
Updated parameters to init_tree()
include/myisamchk.h:
Added malloc_flags to allow one to use MY_THREAD_SPECIFIC for checks.
include/mysql.h:
Added MYSQL_THREAD_SPECIFIC_MALLOC
Used 'unused1' to mark memory as thread specific.
include/mysql.h.pp:
Updated file
include/mysql_com.h:
Used 'unused1' to mark memory as thread specific.
Updated parameters for my_net_init()
libmysql/libmysql.c:
Updated call to init_alloc_root() to mark memory thread specific.
libmysqld/emb_qcache.cc:
Updated call to init_alloc_root()
libmysqld/lib_sql.cc:
Updated call to init_alloc_root()
mysql-test/r/create.result:
Updated results
mysql-test/r/user_var.result:
Updated results
mysql-test/suite/funcs_1/datadict/processlist_priv.inc:
Update to handle new format of SHOW PROCESSLIST
mysql-test/suite/funcs_1/datadict/processlist_val.inc:
Update to handle new format of SHOW PROCESSLIST
mysql-test/suite/funcs_1/r/is_columns_is.result:
Update to handle new format of SHOW PROCESSLIST
mysql-test/suite/funcs_1/r/processlist_priv_no_prot.result:
Updated results
mysql-test/suite/funcs_1/r/processlist_val_no_prot.result:
Updated results
mysql-test/t/show_explain.test:
Fixed usage of debug variable so that one can run test with --debug
mysql-test/t/user_var.test:
Added test of memory_usage variable.
mysys/array.c:
Added extra my_flags option to init_dynamic_array() and init_dynamic_array2() so that one can mark memory with MY_THREAD_SPECIFIC
All allocated memory is marked with the given my_flags.
Removed obsolete function init_dynamic_array()
mysys/default.c:
Updated call to init_alloc_root()
Updated call to my_init_dynamic_array()
mysys/hash.c:
Updated call to my_init_dynamic_array_ci().
Allocated memory is marked with MY_THREAD_SPECIFIC if HASH_THREAD_SPECIFIC is used.
mysys/ma_dyncol.c:
init_dynamic_array() -> my_init_dynamic_array()
Added #if to get rid of compiler warnings
mysys/mf_tempdir.c:
Updated call to my_init_dynamic_array()
mysys/my_alloc.c:
Added extra parameter to init_alloc_root() so that one can mark memory with MY_THREAD_SPECIFIC
Extend MEM_ROOT with a flag if memory is thread specific.
This is stored in block_size, to keep the size of the MEM_ROOT object identical as before.
Allocated memory is marked with MY_THREAD_SPECIFIC if used with init_alloc_root()
mysys/my_chmod.c:
Updated DBUG_PRINT because of change of myf type
mysys/my_chsize.c:
Updated DBUG_PRINT because of change of myf type
mysys/my_copy.c:
Updated DBUG_PRINT because of change of myf type
mysys/my_create.c:
Updated DBUG_PRINT because of change of myf type
mysys/my_delete.c:
Updated DBUG_PRINT because of change of myf type
mysys/my_error.c:
Updated DBUG_PRINT because of change of myf type
mysys/my_fopen.c:
Updated DBUG_PRINT because of change of myf type
mysys/my_fstream.c:
Updated DBUG_PRINT because of change of myf type
mysys/my_getwd.c:
Updated DBUG_PRINT because of change of myf type
mysys/my_lib.c:
Updated call to init_alloc_root()
Updated call to my_init_dynamic_array()
Updated DBUG_PRINT because of change of myf type
mysys/my_lock.c:
Updated DBUG_PRINT because of change of myf type
mysys/my_malloc.c:
Store at start of each allocated memory block the size of the block and if the block is thread specific.
Call malloc_size_cb_func, if set, with the memory allocated/freed.
Updated DBUG_PRINT because of change of myf type
mysys/my_open.c:
Updated DBUG_PRINT because of change of myf type
mysys/my_pread.c:
Updated DBUG_PRINT because of change of myf type
mysys/my_read.c:
Updated DBUG_PRINT because of change of myf type
mysys/my_redel.c:
Updated DBUG_PRINT because of change of myf type
mysys/my_rename.c:
Updated DBUG_PRINT because of change of myf type
mysys/my_seek.c:
Updated DBUG_PRINT because of change of myf type
mysys/my_sync.c:
Updated DBUG_PRINT because of change of myf type
mysys/my_thr_init.c:
Ensure that one can call my_thread_dbug_id() even if thread is not properly initialized.
mysys/my_write.c:
Updated DBUG_PRINT because of change of myf type
mysys/mysys_priv.h:
Updated parameters to sf_malloc and sf_realloc()
mysys/safemalloc.c:
Added checking that for memory marked with MY_THREAD_SPECIFIC that it's the same thread that is allocation and freeing the memory.
Added sf_malloc_dbug_id() to allow MariaDB to specify which THD is handling the memory.
Added my_flags arguments to sf_malloc() and sf_realloc() to be able to mark memory with MY_THREAD_SPECIFIC.
Added sf_report_leaked_memory() to get list of memory not freed by a thread.
mysys/tree.c:
Added flags to init_tree() so that one can mark tree to be thread specific.
Removed with_delete option to init_tree(). Now one should instead use MY_TREE_WITH_DELETE_FLAG.
Updated call to init_alloc_root()
All allocated memory is marked with the given malloc flags
mysys/waiting_threads.c:
Updated call to my_init_dynamic_array()
sql-common/client.c:
Updated call to init_alloc_root() and my_net_init() to mark memory thread specific.
Updated call to my_init_dynamic_array().
Added MYSQL_THREAD_SPECIFIC_MALLOC so that client can mark memory as MY_THREAD_SPECIFIC.
sql-common/client_plugin.c:
Updated call to init_alloc_root()
sql/debug_sync.cc:
Added MY_THREAD_SPECIFIC to allocated memory.
sql/event_scheduler.cc:
Removed calls to net_end() as this is now done in ~THD()
Call set_current_thd() to ensure that memory is assigned to right thread.
sql/events.cc:
my_pthread_setspecific_ptr(THR_THD,...) -> set_current_thd()
sql/filesort.cc:
Added MY_THREAD_SPECIFIC to allocated memory.
sql/filesort_utils.cc:
Added MY_THREAD_SPECIFIC to allocated memory.
sql/ha_ndbcluster.cc:
Updated call to init_alloc_root()
Updated call to my_net_init()
Removed calls to net_end() and thd->cleanup() as these are now done in ~THD()
sql/ha_ndbcluster_binlog.cc:
Updated call to my_net_init()
Updated call to init_sql_alloc()
Removed calls to net_end() and thd->cleanup() as these are now done in ~THD()
sql/ha_partition.cc:
Updated call to init_alloc_root()
sql/handler.cc:
Added MY_THREAD_SPECIFIC to allocated memory.
Added missing call to my_dir_end()
sql/item_func.cc:
Added MY_THREAD_SPECIFIC to allocated memory.
sql/item_subselect.cc:
Added MY_THREAD_SPECIFIC to allocated memory.
sql/item_sum.cc:
Added MY_THREAD_SPECIFIC to allocated memory.
sql/log.cc:
More DBUG
Updated call to init_alloc_root()
sql/mdl.cc:
Added MY_THREAD_SPECIFIC to allocated memory.
sql/mysqld.cc:
Added total_memory_used
Updated call to init_alloc_root()
Move mysql_cond_broadcast() before my_thread_end()
Added mariadb_dbug_id() to count memory per THD instead of per thread.
Added my_malloc_size_cb_func() callback function for my_malloc() to count memory.
Move initialization of mysqld_server_started and mysqld_server_initialized earlier.
Updated call to my_init_dynamic_array().
Updated call to my_net_init().
Call my_pthread_setspecific_ptr(THR_THD,...) to ensure that memory is assigned to right thread.
Added status variable 'memory_used'.
Updated call to init_alloc_root()
my_pthread_setspecific_ptr(THR_THD,...) -> set_current_thd()
sql/mysqld.h:
Added set_current_thd()
sql/net_serv.cc:
Added new parameter to my_net_init() so that one can mark memory with MY_THREAD_SPECIFIC.
Store in net->thread_specific_malloc if memory is thread specific.
Mark memory to be thread specific if requested.
sql/opt_range.cc:
Updated call to my_init_dynamic_array()
Updated call to init_sql_alloc()
Added MY_THREAD_SPECIFIC to allocated memory.
sql/opt_subselect.cc:
Updated call to init_sql_alloc() to mark memory thread specific.
sql/protocol.cc:
Fixed compiler warning
sql/records.cc:
Added MY_THREAD_SPECIFIC to allocated memory.
sql/rpl_filter.cc:
Updated call to my_init_dynamic_array()
sql/rpl_handler.cc:
Updated call to my_init_dynamic_array2()
sql/rpl_handler.h:
Updated call to init_sql_alloc()
sql/rpl_mi.cc:
Updated call to my_init_dynamic_array()
sql/rpl_tblmap.cc:
Updated call to init_alloc_root()
sql/rpl_utility.cc:
Updated call to my_init_dynamic_array()
sql/slave.cc:
Initialize things properly before calling functions that allocate memory.
Removed calls to net_end() as this is now done in ~THD()
sql/sp_head.cc:
Updated call to init_sql_alloc()
Updated call to my_init_dynamic_array()
Added parameter to warning_info() that it should be fully initialized.
sql/sp_pcontext.cc:
Updated call to my_init_dynamic_array()
sql/sql_acl.cc:
Updated call to init_sql_alloc()
Updated call to my_init_dynamic_array()
my_pthread_setspecific_ptr(THR_THD,...) -> set_current_thd()
sql/sql_admin.cc:
Added parameter to warning_info() that it should be fully initialized.
sql/sql_analyse.h:
Updated call to init_tree() to mark memory thread specific.
sql/sql_array.h:
Updated call to my_init_dynamic_array() to mark memory thread specific.
sql/sql_audit.cc:
Updated call to my_init_dynamic_array()
sql/sql_base.cc:
Updated call to init_sql_alloc()
my_pthread_setspecific_ptr(THR_THD,...) -> set_current_thd()
sql/sql_cache.cc:
Updated comment
sql/sql_class.cc:
Added parameter to warning_info() that not initialize it until THD is fully created.
Updated call to init_sql_alloc()
Mark THD::user_vars has to be thread specific.
Updated call to my_init_dynamic_array()
Ensure that memory allocated by THD is assigned to the THD.
More DBUG
Always acll net_end() in ~THD()
Assert that all memory signed to this THD is really deleted at ~THD.
Fixed set_status_var_init() to not reset memory_used.
my_pthread_setspecific_ptr(THR_THD,...) -> set_current_thd()
sql/sql_class.h:
Added MY_THREAD_SPECIFIC to allocated memory.
Added malloc_size to THD to record allocated memory per THD.
sql/sql_delete.cc:
Added MY_THREAD_SPECIFIC to allocated memory.
sql/sql_error.cc:
Added 'initialize' parameter to Warning_info() to say if should allocate memory for it's structures.
This is used by THD::THD() to not allocate memory until THD is ready.
Added Warning_info::free_memory()
sql/sql_error.h:
Updated Warning_info() class.
sql/sql_handler.cc:
Updated call to init_alloc_root() to mark memory thread specific.
sql/sql_insert.cc:
More DBUG
sql/sql_join_cache.cc:
Added MY_THREAD_SPECIFIC to allocated memory.
sql/sql_lex.cc:
Updated call to my_init_dynamic_array()
sql/sql_lex.h:
Updated call to my_init_dynamic_array()
sql/sql_load.cc:
Added MY_THREAD_SPECIFIC to allocated memory.
sql/sql_parse.cc:
Removed calls to net_end() and thd->cleanup() as these are now done in ~THD()
Ensure that examined_row_count() is reset before query.
Fixed bug where kill_threads_for_user() was using the wrong mem_root to allocate memory.
my_pthread_setspecific_ptr(THR_THD,...) -> set_current_thd()
Don't restore thd->status_var.memory_used when restoring thd->status_var
sql/sql_plugin.cc:
Updated call to init_alloc_root()
Updated call to my_init_dynamic_array()
Don't allocate THD on the stack, as this causes problems with valgrind when doing thd memory counting.
my_pthread_setspecific_ptr(THR_THD,...) -> set_current_thd()
sql/sql_prepare.cc:
Added parameter to warning_info() that it should be fully initialized.
Updated call to init_sql_alloc() to mark memory thread specific.
sql/sql_reload.cc:
my_pthread_setspecific_ptr(THR_THD,...) -> set_current_thd()
sql/sql_select.cc:
Updated call to my_init_dynamic_array() and init_sql_alloc() to mark memory thread specific.
Added MY_THREAD_SPECIFIC to allocated memory.
More DBUG
sql/sql_servers.cc:
Updated call to init_sql_alloc() to mark memory some memory thread specific.
my_pthread_setspecific_ptr(THR_THD,...) -> set_current_thd()
sql/sql_show.cc:
Updated call to my_init_dynamic_array()
Mark my_dir() memory thread specific.
Use my_pthread_setspecific_ptr(THR_THD,...) to mark that allocated memory should be allocated to calling thread.
More DBUG.
Added malloc_size and examined_row_count to SHOW PROCESSLIST.
Added MY_THREAD_SPECIFIC to allocated memory.
Updated call to init_sql_alloc()
Added parameter to warning_info() that it should be fully initialized.
sql/sql_statistics.cc:
Fixed compiler warning
sql/sql_string.cc:
String elements can now be marked as thread specific.
sql/sql_string.h:
String elements can now be marked as thread specific.
sql/sql_table.cc:
Updated call to init_sql_alloc() and my_malloc() to mark memory thread specific
my_pthread_setspecific_ptr(THR_THD,...) -> set_current_thd()
Fixed compiler warning
sql/sql_test.cc:
Updated call to my_init_dynamic_array() to mark memory thread specific.
sql/sql_trigger.cc:
Updated call to init_sql_alloc()
sql/sql_udf.cc:
Updated call to init_sql_alloc()
my_pthread_setspecific_ptr(THR_THD,...) -> set_current_thd()
sql/sql_update.cc:
Added MY_THREAD_SPECIFIC to allocated memory.
sql/table.cc:
Updated call to init_sql_alloc().
Mark memory used by temporary tables, that are not for slave threads, as MY_THREAD_SPECIFIC
Updated call to init_sql_alloc()
sql/thr_malloc.cc:
Added my_flags argument to init_sql_alloc() to be able to mark memory as MY_THREAD_SPECIFIC.
sql/thr_malloc.h:
Updated prototype for init_sql_alloc()
sql/tztime.cc:
Updated call to init_sql_alloc()
Updated call to init_alloc_root() to mark memory thread specific.
my_pthread_setspecific_ptr(THR_THD,...) -> set_current_thd()
sql/uniques.cc:
Updated calls to init_tree(), my_init_dynamic_array() and my_malloc() to mark memory thread specific.
sql/unireg.cc:
Added MY_THREAD_SPECIFIC to allocated memory.
storage/csv/ha_tina.cc:
Updated call to init_alloc_root()
storage/federated/ha_federated.cc:
Updated call to init_alloc_root()
Updated call to my_init_dynamic_array()
Ensure that memory allocated by fedarated is registered for the system, not for the thread.
storage/federatedx/federatedx_io_mysql.cc:
Updated call to my_init_dynamic_array()
storage/federatedx/ha_federatedx.cc:
Updated call to init_alloc_root()
Updated call to my_init_dynamic_array()
storage/heap/ha_heap.cc:
Added MY_THREAD_SPECIFIC to allocated memory.
storage/heap/heapdef.h:
Added parameter to hp_get_new_block() to be able to do thread specific memory tagging.
storage/heap/hp_block.c:
Added parameter to hp_get_new_block() to be able to do thread specific memory tagging.
storage/heap/hp_create.c:
- Internal HEAP tables are now marking it's memory as MY_THREAD_SPECIFIC.
- Use MY_TREE_WITH_DELETE instead of removed option 'with_delete'.
storage/heap/hp_open.c:
Internal HEAP tables are now marking it's memory as MY_THREAD_SPECIFIC.
storage/heap/hp_write.c:
Added new parameter to hp_get_new_block()
storage/maria/ma_bitmap.c:
Updated call to my_init_dynamic_array()
storage/maria/ma_blockrec.c:
Updated call to my_init_dynamic_array()
storage/maria/ma_check.c:
Updated call to init_alloc_root()
storage/maria/ma_ft_boolean_search.c:
Updated calls to init_tree() and init_alloc_root()
storage/maria/ma_ft_nlq_search.c:
Updated call to init_tree()
storage/maria/ma_ft_parser.c:
Updated call to init_tree()
Updated call to init_alloc_root()
storage/maria/ma_loghandler.c:
Updated call to my_init_dynamic_array()
storage/maria/ma_open.c:
Updated call to my_init_dynamic_array()
storage/maria/ma_sort.c:
Updated call to my_init_dynamic_array()
storage/maria/ma_write.c:
Updated calls to my_init_dynamic_array() and init_tree()
storage/maria/maria_pack.c:
Updated call to init_tree()
storage/maria/unittest/sequence_storage.c:
Updated call to my_init_dynamic_array()
storage/myisam/ft_boolean_search.c:
Updated call to init_tree()
Updated call to init_alloc_root()
storage/myisam/ft_nlq_search.c:
Updated call to init_tree()
storage/myisam/ft_parser.c:
Updated call to init_tree()
Updated call to init_alloc_root()
storage/myisam/ft_stopwords.c:
Updated call to init_tree()
storage/myisam/mi_check.c:
Updated call to init_alloc_root()
storage/myisam/mi_write.c:
Updated call to my_init_dynamic_array()
Updated call to init_tree()
storage/myisam/myisamlog.c:
Updated call to init_tree()
storage/myisam/myisampack.c:
Updated call to init_tree()
storage/myisam/sort.c:
Updated call to my_init_dynamic_array()
storage/myisammrg/ha_myisammrg.cc:
Updated call to init_sql_alloc()
storage/perfschema/pfs_check.cc:
Rest current_thd
storage/perfschema/pfs_instr.cc:
Removed DBUG_ENTER/DBUG_VOID_RETURN as at this point my_thread_var is not allocated anymore, which can cause problems.
support-files/compiler_warnings.supp:
Disable compiler warning from offsetof macro.
sql/sql_insert.cc:
CREATE ... IF NOT EXISTS may do nothing, but
it is still not a failure. don't forget to my_ok it.
******
CREATE ... IF NOT EXISTS may do nothing, but
it is still not a failure. don't forget to my_ok it.
sql/sql_table.cc:
small cleanup
******
small cleanup
- 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.
dbug/dbug.c:
Fixed compiler warnings on windows
mysql-test/r/index_intersect_innodb.result:
Don't print number of rows as this varies
mysql-test/suite/funcs_1/r/processlist_val_no_prot.result:
Update to use new State
mysql-test/suite/handler/heap.result:
Update results
mysql-test/suite/handler/heap.test:
Changed key used in test as the key 'b' will not guarantee order of the two last elements (as the key value is the same)
mysql-test/suite/pbxt/r/lock_multi.result:
Update to use new State
mysql-test/t/index_intersect.test:
Don't print number of rows as this varies
mysql-test/valgrind.supp:
Added suppression for linux
mysys/hash.c:
Fixed compiler warnings on windows
plugin/handler_socket/handlersocket/database.cpp:
Fixed compiler warnings
sql-common/client_plugin.c:
Changed variable to define to avoid compiler warnings when variable is not used
sql-common/my_time.c:
Initialize all my_time elements to avoid compiler warnings
storage/oqgraph/ha_oqgraph.cc:
Use right function (to avoid compiler warning)
storage/pbxt/src/table_xt.cc:
Initialize variables (to avoid compiler warnings)
Essentially, the problem is that safemalloc is excruciatingly
slow as it checks all allocated blocks for overrun at each
memory management primitive, yielding a almost exponential
slowdown for the memory management functions (malloc, realloc,
free). The overrun check basically consists of verifying some
bytes of a block for certain magic keys, which catches some
simple forms of overrun. Another minor problem is violation
of aliasing rules and that its own internal list of blocks
is prone to corruption.
Another issue with safemalloc is rather the maintenance cost
as the tool has a significant impact on the server code.
Given the magnitude of memory debuggers available nowadays,
especially those that are provided with the platform malloc
implementation, maintenance of a in-house and largely obsolete
memory debugger becomes a burden that is not worth the effort
due to its slowness and lack of support for detecting more
common forms of heap corruption.
Since there are third-party tools that can provide the same
functionality at a lower or comparable performance cost, the
solution is to simply remove safemalloc. Third-party tools
can provide the same functionality at a lower or comparable
performance cost.
The removal of safemalloc also allows a simplification of the
malloc wrappers, removing quite a bit of kludge: redefinition
of my_malloc, my_free and the removal of the unused second
argument of my_free. Since free() always check whether the
supplied pointer is null, redudant checks are also removed.
Also, this patch adds unit testing for my_malloc and moves
my_realloc implementation into the same file as the other
memory allocation primitives.
client/mysqldump.c:
Pass my_free directly as its signature is compatible with the
callback type -- which wasn't the case for free_table_ent.
Fix Bug#50555 "handler commands crash server in my_hash_first()"
as a post-merge fix (the new handler tests are not passing
otherwise).
- in hash.c, don't call calc_hash if ! my_hash_inited().
- add tests and results for the test case for Bug#50555
mysys/hash.c:
Assert that the hash is initialized when it's used.
sql/set_var.cc:
Check that the hash is initalized before using it (Bug#50555)
- Moved some code from innodb_plugin to xtradb, to ensure that all tests runs
- Did changes in pbxt and maria storage engines becasue of changes in thd->query
- Reverted wrong code in sql_table.cc for how ROW_FORMAT is used.
This is a re-commit of Monty's merge to eliminate an extra commit from
MySQL-5.1.42 that was accidentally included in the merge.
This is a merge of the MySQL 5.1.41 clone-off (clone-5.1.41-build). In
case there are any extra changes done before final MySQL 5.1.41
release, these will need to be merged later before MariaDB 5.1.41
release.
* Finished Monty and Jani's merge
* Some InnoDB tests still fail (because it's old xtradb code run against
newer testsuite). They are expected to go after mergning with the latest
xtradb.
The merge from http://lists.mysql.com/commits/76678 caused the
growth_size parameter to the my_init_dynamic_array function to
be ignored. This patch corrects the problem.
mysys/hash.c:
Bug#43572 Handle failures from hash_init
Replacing the last parameter to my_init_dynamic_array with
growth_size.
Failure to allocate memory for the hash->array element,
caused hash_init to return without initializing the other
members of the hash. Thus although the dynamic array
buffer may be allocated at a later point in the code, the
incompletely initialized hash caused fatal failures.
This patch moves the initialization of the other members
of the hash above the array allocation, so that the usage
of this hash will not result in fatal failures.
include/hash.h:
Bug#43572 Handle failures from hash_init
hash_inited is used to verify that the hash is
valid. After the change induced by the current
patch hash->array.buffer !=0 is not a valid check
for this condition, since, the dynamic array can
be allocated even at a later time. Bootstrap SQL
script is setting some variables, which are
actually not set due to this hash_inited issue.
Thus we get empty grant tables.
A better way to check if the hash is valid is
to verify that hash->blength is greater than 0.
mysys/hash.c:
Bug#43572 Handle failures from hash_init
Move the initialization of the other members
of the hash above the array allocation, so that
the usage of this hash will not result in fatal
failures.
- Remove bothersome warning messages. This change focuses on the warnings
that are covered by the ignore file: support-files/compiler_warnings.supp.
- Strings are guaranteed to be max uint in length
This writes a warning on stderr if one uses mutex in different order,
like if one in one case would lock mutex in the order A,B and in another case
would lock mutex in the order B,A
This is inspired by and loosely based on the LOCKDEP patch by Jonas
Wrong mutex order is either fixed or mutex are marked with MYF_NO_DEADLOCK_DETECTION
if used inconsistently (need to be fixed by server team)
KNOWN_BUGS.txt:
Added information that one need to dump and restore Maria tables
include/hash.h:
Added prototype function for walking over all elements in a hash
include/my_pthread.h:
Added my_pthread_mutex_init() and my_pthread_mutex_lock(); These should be used if one wants to disable mutex order checking.
Changed names of the nonposix mutex_init functions to not conflict with my_phread_mutex_init()
Added and extended structures for mutex deadlock detection.
New arguments to sage_mutex_init() and safe_mutex_lock() to allow one to disable mutex order checking.
Added variable 'safe_mutex_deadlock_detector' to enable/disable deadlock detection for all pthread_mutex_init()
mysys/Makefile.am:
Added cleaning of test files
Added test_thr_mutex
mysys/hash.c:
Added hash_iterate() to iterate over all elements in a hash
More comments
mysys/my_init.c:
Added calls to destory all mutex uses by mysys()
Added waiting for threads to end before calling TERMINATE() to list not freed memory
mysys/my_pthread.c:
Changed names to free my_pthread_mutex_init() for mutex-lock-order-checking
mysys/my_sleep.c:
Fixed too long wait if using 1000000L as argument
mysys/my_thr_init.c:
Mark THR_LOCK_threads and THR_LOCK_malloc to not have mutex deadlock detection.
(We can't have it enabled for this as these are internal mutex used by the detector
Call my_thread_init() early as we need thread specific variables enabled for the following pthread_mutex_init()
Move code to wait for threads to end to my_wait_for_other_threads_to_die()
Don't destroy mutex and conditions unless all threads have died
Added my_thread_destroy_mutex() to destroy all mutex used by the mysys thread system
Name the thread specific mutex as "mysys_var->mutex"
Added my_thread_var_mutex_in_use() to return pointer to mutex in use or 0 if thread variables are not initialized
mysys/mysys_priv.h:
Added prototypes for functions used internally with mutex-wrong-usage detection
mysys/thr_mutex.c:
Added runtime detection of mutex used in conflicting order
See WL#3262 or test_thr_mutex.c for examples
The base idea is for each mutex have two hashes:
- mutex->locked_mutex points to all mutex used after this one
- mutex->used_mutex points to all mutex which has this mutex in it's mutex->locked_mutex
There is a wrong mutex order if any mutex currently locked before this mutex is in the mutex->locked_mutex hash
sql/event_queue.cc:
Mark mutex used inconsistently (need to be fixed by server team)
sql/event_scheduler.cc:
Declare the right order to take the mutex
sql/events.cc:
Mark mutex used inconsistently (need to be fixed by server team)
sql/ha_ndbcluster_binlog.cc:
Mark mutex used inconsistently (need to be fixed by server team)
sql/log.cc:
Mark mutex used inconsistently (need to be fixed by server team)
sql/mysqld.cc:
Use pthread_mutex_trylock instead of pthread_mutex_unlock() when sending kill signal to thread
This is needed to avoid wrong mutex order as normally one takes 'current_mutex' before mysys_var->mutex.
Added call to free sp cache.
Add destruction of LOCK_server_started and COND_server_started.
Added register_mutex_order() function to register in which order mutex should be taken
(to initiailize mutex_deadlock_detector).
Added option to turn off safe_mutex_deadlock_detector
sql/protocol.cc:
Fixed wrong argument to DBUG_PRINT (found by valgrind)
sql/rpl_mi.cc:
Mark mutex used inconsistently (need to be fixed by server team)
sql/set_var.cc:
Remove wrong locking of LOCK_global_system_variables when reading and setting log variables
(would cause inconsistent mutex order).
Update global variables outside of logger.unlock() as LOCK_global_system_variables has to be taken before logger locks
Reviewed by gluh
sql/sp_cache.cc:
Added function to destroy mutex used by sp cache
sql/sp_cache.h:
Added function to destroy mutex used by sp cache
sql/sql_class.cc:
Use pthread_mutex_trylock instead of pthread_mutex_unlock() when sending kill signal to thread
This is needed to avoid wrong mutex order as normally one takes 'current_mutex' before mysys_var->mutex.
Register order in which LOCK_delete and mysys_var->mutex is taken
sql/sql_insert.cc:
Give a name for Delayed_insert::mutex
Mark mutex used inconsistently (need to be fixed by server team)
Move closing of tables outside of di->mutex (to avoid wrong mutex order)
sql/sql_show.cc:
Don't keep LOCK_global_system_variables locked over value->show_type() as this leads to wrong mutex order
storage/innobase/handler/ha_innodb.cc:
Disable safe_muted_deadlock_detector for innobase intern mutex (to speed up page cache initialization)
storage/maria/ha_maria.cc:
Added flag to ha_maria::info() to signal if we need to lock table share or not.
This is needed to avoid locking mutex in wrong order
storage/maria/ha_maria.h:
Added flag to ha_maria::info() to signal if we need to lock table share or not.
storage/maria/ma_close.c:
Destroy key_del_lock
Simplify freeing ftparser_param
storage/maria/ma_key.c:
Better comment
storage/maria/ma_loghandler.c:
Mark mutex used inconsistently (need to be fixed by sanja)
storage/maria/ma_state.c:
More comments
storage/maria/ma_test1.c:
Ensure that safe_mutex_deadlock_detector is always on (should be, this is just for safety)
storage/maria/ma_test2.c:
Ensure that safe_mutex_deadlock_detector is always on (should be, this is just for safety)
This patch contains fixes for two problems:
1. As originally reported, the server crashed on Mac OS X when trying to access
an EXAMPLE table after the EXAMPLE plugin was installed.
It turned out that the dynamically loaded EXAMPLE plugin called the
function hash_earch() from a Mac OS X system library, instead of
hash_earch() from MySQL's mysys library. Makefile.am in storage/example
does not include libmysys. So the Mac OS X linker arranged the hash_search()
function to be linked to the system library when the shared object is
loaded.
One possible solution would be to include libmysys into the linkage of
dynamic plugins. But then we must have a libmysys.so, which must be
used by the server too. This could have a minimal performance impact,
but foremost the change seems to bee too risky at the current state of
MySQL 5.1.
The selected solution is to rename MySQL's hash_search() to my_hash_search()
like it has been done before with hash_insert() and hash_reset().
Since this is the third time, we need to rename a hash_*() function,
I did renamed all hash_*() functions to my_hash_*().
To avoid changing a zillion calls to these functions, and announcing
this to hundreds of developers, I added defines that map the old names
to the new names.
This change is in hash.h and hash.c.
2. The other problem was improper implementation of the handlerton-to-plugin
mapping. We use a fixed-size array to hold a plugin reference for each
handlerton. On every install of a handler plugin, we allocated a new slot
of the array. On uninstall we did not free it. After some uninstall/install
cycles the array overflowed. We did not check for overflow.
One fix is to check for overflow to stop the crashes.
Another fix is to free the array slot at uninstall and search for a free slot
at plugin install.
This change is in handler.cc.
include/hash.h:
Bug#37958 - test main.plugin crash on Mac OS X when selecting from EXAMPLE engine.
Renamed hash_*() functions to my_hash_*().
Added defines that map old names to new names.
mysys/hash.c:
Bug#37958 - test main.plugin crash on Mac OS X when selecting from EXAMPLE engine.
Renamed hash_*() functions to my_hash_*().
sql/handler.cc:
Bug#37958 - test main.plugin crash on Mac OS X when selecting from EXAMPLE engine.
Protect against a failing ha_initialize_handlerton() in ha_finalize_handlerton().
Free hton2plugin slot on uninstall of a handler plugin.
Reuse freed slost of the hton2plugin array.
Protect against array overrun.
into mysql.com:/home/my/mysql-maria
mysql-test/r/maria.result:
Auto merged
mysql-test/suite/ndb/r/ndb_auto_increment.result:
Auto merged
mysql-test/t/maria.test:
Auto merged
mysys/hash.c:
Auto merged
mysys/thr_lock.c:
Auto merged
sql/field.cc:
Auto merged
sql/ha_ndbcluster.cc:
Auto merged
sql/ha_ndbcluster.h:
Auto merged
sql/ha_partition.cc:
Auto merged
sql/ha_partition.h:
Auto merged
sql/handler.cc:
Auto merged
sql/handler.h:
Auto merged
sql/log_event.cc:
Auto merged
sql/log_event_old.cc:
Auto merged
sql/mysqld.cc:
Auto merged
sql/protocol.cc:
Auto merged
sql/sql_load.cc:
Auto merged
sql/sql_parse.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_table.cc:
Auto merged
sql/sql_yacc.yy:
Auto merged
storage/csv/ha_tina.cc:
Auto merged
storage/federated/ha_federated.cc:
Auto merged
storage/maria/Makefile.am:
Auto merged
storage/maria/ma_check.c:
Auto merged
storage/maria/ma_control_file.c:
Auto merged
storage/maria/ma_delete_all.c:
Auto merged
storage/maria/ma_dynrec.c:
Auto merged
storage/maria/ma_init.c:
Auto merged
storage/maria/ma_key_recover.c:
Auto merged
storage/maria/ma_open.c:
Auto merged
storage/maria/ma_page.c:
Auto merged
storage/maria/ma_range.c:
Auto merged
storage/maria/ma_recovery.c:
Auto merged
storage/maria/ma_test1.c:
Auto merged
storage/maria/maria_read_log.c:
Auto merged
storage/maria/unittest/ma_test_all-t:
Auto merged
storage/maria/unittest/ma_test_loghandler_multigroup-t.c:
Auto merged
storage/maria/unittest/ma_test_recovery.pl:
Auto merged
storage/myisam/ha_myisam.cc:
Auto merged
storage/myisam/myisamdef.h:
Auto merged
include/my_base.h:
Manual merge where error code are kept same as in 5.1
mysys/my_handler.c:
No changes
sql/item.cc:
Manual merge
sql/sql_class.cc:
Manual merge
sql/sql_insert.cc:
Manual merge
storage/maria/ha_maria.cc:
Manual merge
storage/maria/ma_blockrec.c:
Manual merge
storage/maria/ma_delete.c:
Manual merge
storage/maria/ma_write.c:
Manual merge
Added argument to maria_end_bulk_insert() to know if the table will be deleted after the operation
Fixed wrong call to strmake
Don't call bulk insert in case of inserting only one row (speed optimization as starting/stopping bulk insert
Allow storing year 2155 in year field
When running with purify/valgrind avoid copying structures over themself
Added hook 'trnnam_end_trans_hook' that is called when transaction ends
Added trn->used_tables that is used to an entry for all tables used by transaction
Fixed that ndb doesn't crash on duplicate key error when start_bulk_insert/end_bulk_insert are not called
include/maria.h:
Added argument to maria_end_bulk_insert() to know if the table will be deleted after the operation
include/my_tree.h:
Added macro 'reset_free_element()' to be able to ignore calls to the external free function.
Is used to optimize end-bulk-insert in case of failures, in which case we don't want write the remaining keys in the tree
mysql-test/install_test_db.sh:
Upgrade to new mysql_install_db options
mysql-test/r/maria-mvcc.result:
New tests
mysql-test/r/maria.result:
New tests
mysql-test/suite/ndb/r/ndb_auto_increment.result:
Fixed error message now when bulk insert is not always called
mysql-test/suite/ndb/t/ndb_auto_increment.test:
Fixed error message now when bulk insert is not always called
mysql-test/t/maria-mvcc.test:
Added testing of versioning of count(*)
mysql-test/t/maria-page-checksum.test:
Added comment
mysql-test/t/maria.test:
More tests
mysys/hash.c:
Code style change
sql/field.cc:
Allow storing year 2155 in year field
sql/ha_ndbcluster.cc:
Added new argument to end_bulk_insert() to signal if the bulk insert should ignored
sql/ha_ndbcluster.h:
Added new argument to end_bulk_insert() to signal if the bulk insert should ignored
sql/ha_partition.cc:
Added new argument to end_bulk_insert() to signal if the bulk insert should ignored
sql/ha_partition.h:
Added new argument to end_bulk_insert() to signal if the bulk insert should ignored
sql/handler.cc:
Don't call get_dup_key() if there is no table object. This can happen if the handler generates a duplicate key error on commit
sql/handler.h:
Added new argument to end_bulk_insert() to signal if the bulk insert should ignored (ie, the table will be deleted)
sql/item.cc:
Style fix
Removed compiler warning
sql/log_event.cc:
Added new argument to ha_end_bulk_insert()
sql/log_event_old.cc:
Added new argument to ha_end_bulk_insert()
sql/mysqld.cc:
Removed compiler warning
sql/protocol.cc:
Added DBUG
sql/sql_class.cc:
Added DBUG
Fixed wrong call to strmake
sql/sql_insert.cc:
Don't call bulk insert in case of inserting only one row (speed optimization as starting/stopping bulk insert involves a lot of if's)
Added new argument to ha_end_bulk_insert()
sql/sql_load.cc:
Added new argument to ha_end_bulk_insert()
sql/sql_parse.cc:
Style fixes
Avoid goto in common senario
sql/sql_select.cc:
When running with purify/valgrind avoid copying structures over themself. This is not a real bug in itself, but it's a waste of cycles and causes valgrind warnings
sql/sql_select.h:
Avoid copying structures over themself. This is not a real bug in itself, but it's a waste of cycles and causes valgrind warnings
sql/sql_table.cc:
Call HA_EXTRA_PREPARE_FOR_DROP if table created by ALTER TABLE is going to be dropped
Added new argument to ha_end_bulk_insert()
storage/archive/ha_archive.cc:
Added new argument to end_bulk_insert()
storage/archive/ha_archive.h:
Added new argument to end_bulk_insert()
storage/federated/ha_federated.cc:
Added new argument to end_bulk_insert()
storage/federated/ha_federated.h:
Added new argument to end_bulk_insert()
storage/maria/Makefile.am:
Added ma_state.c and ma_state.h
storage/maria/ha_maria.cc:
Versioning of count(*) and checksum
- share->state.state is now assumed to be correct, not handler->state
- Call _ma_setup_live_state() in external lock to get count(*)/checksum versioning. In case of
not versioned and not concurrent insertable table, file->s->state.state contains the correct state information
Other things:
- file->s -> share
- Added DBUG_ASSERT() for unlikely case
- Optimized end_bulk_insert() to not write anything if table is going to be deleted (as in failed alter table)
- Indentation changes in external_lock becasue of removed 'goto' caused a big conflict even if very little was changed
storage/maria/ha_maria.h:
New argument to end_bulk_insert()
storage/maria/ma_blockrec.c:
Update for versioning of count(*) and checksum
Keep share->state.state.data_file_length up to date (not info->state->data_file_length)
Moved _ma_block_xxxx_status() and maria_versioning() functions to ma_state.c
storage/maria/ma_check.c:
Update and use share->state.state instead of info->state
info->s to share
Update info->state at end of repair
Call _ma_reset_state() to update share->state_history at end of repair
storage/maria/ma_checkpoint.c:
Call _ma_remove_not_visible_states() on checkpoint to clean up not visible state history from tables
storage/maria/ma_close.c:
Remember state history for running transaction even if table is closed
storage/maria/ma_commit.c:
Ensure we always call trnman_commit_trn() even if other calls fails. If we don't do that, the translog and state structures will not be freed
storage/maria/ma_delete.c:
Versioning of count(*) and checksum:
- Always update info->state->checksum and info->state->records
storage/maria/ma_delete_all.c:
Versioning of count(*) and checksum:
- Ensure that share->state.state is updated, as here is where we store the primary information
storage/maria/ma_dynrec.c:
Use lock_key_trees instead of concurrent_insert to check if trees should be locked.
This allows us to lock trees both for concurrent_insert and for index versioning.
storage/maria/ma_extra.c:
Versioning of count(*) and checksum:
- Use share->state.state instead of info->state
- share->concurrent_insert -> share->non_transactional_concurrent_insert
- Don't update share->state.state from info->state if transactional table
Optimization:
- Don't flush io_cache or bitmap if we are using FLUSH_IGNORE_CHANGED
storage/maria/ma_info.c:
Get most state information from current state
storage/maria/ma_init.c:
Add hash table and free function to store states for closed tables
Install hook for transaction commit/rollback to update history state
storage/maria/ma_key_recover.c:
Versioning of count(*) and checksum:
- Use share->state.state instead of info->state
storage/maria/ma_locking.c:
Versioning of count(*) and checksum:
- Call virtual functions (if exists) to restore/update status
- Move _ma_xxx_status() functions to ma_state.c
info->s -> share
storage/maria/ma_open.c:
Versioning of count(*) and checksum:
- For not transactional tables, set info->state to point to new allocated state structure.
- Initialize new info->state_start variable that points to state at start of transaction
- Copy old history states from hash table (maria_stored_states) first time the table is opened
- Split flag share->concurrent_insert to non_transactional_concurrent_insert & lock_key_tree
- For now, only enable versioning of tables without keys (to be fixed in soon!)
- Added new virtual function to restore status in maria_lock_database)
More DBUG
storage/maria/ma_page.c:
Versioning of count(*) and checksum:
- Use share->state.state instead of info->state
- Modify share->state.state.key_file_length under share->intern_lock
storage/maria/ma_range.c:
Versioning of count(*) and checksum:
- Lock trees based on share->lock_key_trees
info->s -> share
storage/maria/ma_recovery.c:
Versioning of count(*) and checksum:
- Use share->state.state instead of info->state
- Update state information on close and when reenabling logging
storage/maria/ma_rkey.c:
Versioning of count(*) and checksum:
- Lock trees based on share->lock_key_trees
storage/maria/ma_rnext.c:
Versioning of count(*) and checksum:
- Lock trees based on share->lock_key_trees
storage/maria/ma_rnext_same.c:
Versioning of count(*) and checksum:
- Lock trees based on share->lock_key_trees
- Only skip rows based on file length if non_transactional_concurrent_insert is set
storage/maria/ma_rprev.c:
Versioning of count(*) and checksum:
- Lock trees based on share->lock_key_trees
storage/maria/ma_rsame.c:
Versioning of count(*) and checksum:
- Lock trees based on share->lock_key_trees
storage/maria/ma_sort.c:
Use share->state.state instead of info->state
Fixed indentation
storage/maria/ma_static.c:
Added maria_stored_state
storage/maria/ma_update.c:
Versioning of count(*) and checksum:
- Always update info->state->checksum and info->state->records
- Remove optimization for index file update as it doesn't work for transactional tables
storage/maria/ma_write.c:
Versioning of count(*) and checksum:
- Always update info->state->checksum and info->state->records
storage/maria/maria_def.h:
Move MARIA_STATUS_INFO to ma_state.h
Changes to MARIA_SHARE:
- Added state_history to store count(*)/checksum states
- Added in_trans as counter if table is used by running transactions
- Split concurrent_insert into lock_key_trees and on_transactional_concurrent_insert.
- Added virtual function lock_restore_status
Changes to MARIA_HA:
- save_state -> state_save
- Added state_start to store state at start of transaction
storage/maria/maria_pack.c:
Versioning of count(*) and checksum:
- Use share->state.state instead of info->state
Indentation fixes
storage/maria/trnman.c:
Added hook 'trnnam_end_trans_hook' that is called when transaction ends
Added trn->used_tables that is used to an entry for all tables used by transaction
More DBUG
Changed return type of trnman_end_trn() to my_bool
Added trnman_get_min_trid() to get minimum trid in use.
Added trnman_exists_active_transactions() to check if there exist a running transaction started between two commit id
storage/maria/trnman.h:
Added 'used_tables'
Moved all pointers into same groups to get better memory alignment
storage/maria/trnman_public.h:
Added prototypes for new functions and variables
Chagned return type of trnman_end_trn() to my_bool
storage/myisam/ha_myisam.cc:
Added argument to end_bulk_insert() if operation should be aborted
storage/myisam/ha_myisam.h:
Added argument to end_bulk_insert() if operation should be aborted
storage/maria/ma_state.c:
Functions to handle state of count(*) and checksum
storage/maria/ma_state.h:
Structures and declarations to handle state of count(*) and checksum
Each time the server reloads privileges containing table grants, the
system will allocate too much memory than needed because of badly
chosen growth prediction in the underlying dynamic arrays.
This patch introduces a new signature to the hash container initializer
which enables a much more pessimistic approach in favour for more
efficient memory useage.
This patch was supplied by Google Inc.
include/hash.h:
* New signature for _hash_init.
* Defined new function hash_init2 which takes growth_size argument.
mysys/hash.c:
* New signature for _hash_init.
sql/sql_acl.cc:
* Changed hash_init signature so that it takes a 'growth_size' smaller
than the default. Each time a GRANT_TABLE is allocated a pre-allocated
dynamic array is instantiated. A large growth size can result in too
many unused hash-entries per table-entry and thus be a waste of free
memory.
--long-query-time is now given in seconds with microseconds as decimals
--min_examined_row_limit added for slow query log
long_query_time user variable is now double with 6 decimals
Added functions to get time in microseconds
Added faster time() functions for system that has gethrtime() (Solaris)
We now do less time() calls.
Added field->in_read_set() and field->in_write_set() for easier field manipulation by handlers
set_var.cc and my_getopt() can now handle DOUBLE variables.
All time() calls changed to my_time()
my_time() now does retry's if time() call fails.
Added debug function for stopping in mysql_admin_table() when tables are locked
Some trivial function and struct variable renames to avoid merge errors.
Fixed compiler warnings
Initialization of some time variables on windows moved to my_init()
include/my_getopt.h:
Added support for double arguments
include/my_sys.h:
Fixed wrong type to packfrm()
Added new my_time functions
include/mysql/plugin.h:
Added support for DOUBLE
libmysql/CMakeLists.txt:
Added new time functions
libmysql/Makefile.shared:
Added new time functions
mysql-test/r/variables.result:
Testing of long_query_time
mysql-test/t/variables.test:
Testing of long_query_time
mysys/charset.c:
Fixed compiler warnings
mysys/default_modify.c:
Fixed compiler warnings
mysys/hash.c:
Fixed compiler warnings
mysys/mf_getdate.c:
Use my_time()
mysys/mf_iocache2.c:
Fixed compiler warnings
mysys/mf_pack.c:
Fixed compiler warnings
mysys/mf_path.c:
Fixed compiler warnings
mysys/my_append.c:
Fixed compiler warnings
mysys/my_compress.c:
Fixed compiler warnings
mysys/my_copy.c:
Fixed compiler warnings
mysys/my_gethwaddr.c:
Fixed compiler warnings
mysys/my_getopt.c:
Added support for double arguments
mysys/my_getsystime.c:
Added functions to get time in microseconds.
Added faster time() functions for system that has gethrtime() (Solaris)
Moved windows initialization code to my_init()
mysys/my_init.c:
Added initializing of variables needed for windows time functions
mysys/my_static.c:
Added variables needed for windows time functions
mysys/my_static.h:
Added variables needed for windows time functions
mysys/my_thr_init.c:
Added THR_LOCK_time, used for faster my_time()
mysys/mysys_priv.h:
Added THR_LOCK_time, used for faster my_time()
mysys/thr_alarm.c:
time() -> my_time()
sql/event_data_objects.cc:
end_time() -> set_current_time()
sql/event_queue.cc:
end_time() -> set_current_time()
sql/event_scheduler.cc:
Fixed compiler warnings
sql/field.h:
Added field->in_read_set() and field->in_write_set() for easier field manipulation by handlers
sql/item.h:
Added decimal to Item_float(double)
sql/item_cmpfunc.h:
Added decimal to Item_float(double)
sql/item_timefunc.cc:
time() -> my_time()
sql/item_xmlfunc.cc:
Fixed compiler warning
sql/lock.cc:
lock_time() -> set_time_after_lock()
sql/log.cc:
Timing in slow query log to file is now done in microseconds
Changed some while() loops to for() loops.
Fixed indentation
time() -> my_time()
sql/log.h:
Slow query logging is now done based on microseconds
sql/log_event.cc:
time() -> my_time()
Fixed arguments to new Item_float()
sql/mysql_priv.h:
Fixed compiler warnings
Added opt_log_slow_slave_statements
sql/mysqld.cc:
Added --log_slow_slave_statements and --min_examined_row_limit
--long-query-time now takes a double argument with microsecond resolution
Don't write shutdown message when using --help
Removed not needed \n
Thread create time and connect time is now done in microseconds
time() -> my_time()
Avoid some time() calls
sql/net_serv.cc:
Fixed compiler warnings
sql/parse_file.cc:
time() -> my_time()
sql/set_var.cc:
Added support for DOUBLE variables
Added support for variables that are given in seconds with microsecond resolution
sql/set_var.h:
Added support for variables that are given in seconds with microsecond resolution
sql/slave.cc:
Allow logging of slave queries to slow query log if 'opt_log_slow_slave_statements' is given
time() -> my_time()
sql/sql_cache.h:
Fixed compiler warning()
sql/sql_class.cc:
Initialize new THD variables
sql/sql_class.h:
long_query_time is now in microseconds
Added min_examined_row_limit
Reordered some THD elements for higher efficency
Added timers in microseconds (connect_utime, thr_create_utime, start_utime and utime_after_lock)
Start of query is now recorded both in seconds and in microseconds.
Following renames was made for more clarity and avoid merge problems from earlier versions:
connect_time -> connect_utime
thr_create_time -> thr_create_utime
end_time() -> set_current_time()
lock_time() -> set_time_after_lock()
Added THD::start_utime, which is start of query in microseconds from some arbitary time
Added function THD::current_utime()
Removed safe_time() as retry's are handled in my_time()
sql/sql_connect.cc:
User resources are now using microsecond resolution
sql/sql_insert.cc:
end_time() -> set_current_time()
sql-common/client.c:
time() -> my_time()
sql/sql_parse.cc:
Testing if we should print to slow_query_log() is now done with microsecond precission.
If min_examined_row_limit is given, only log queries to slow query log that has examined more rows than this.
sql/sql_select.cc:
Simplify code now that Item_float() takes decimals as argument
sql/sql_show.cc:
time() -> my_time()
Added support for SYS_DOUBLE
sql/sql_table.cc:
Added debug function for stopping in mysql_admin_table() when tables are locked
sql/structs.h:
intime -> reset_utime
