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| author | unknown <ingo@mysql.com> | 2004-12-23 21:45:10 +0100 |
|---|---|---|
| committer | unknown <ingo@mysql.com> | 2004-12-23 21:45:10 +0100 |
| commit | 8d11c01c595261c9c742356c0152c2152b847db9 (patch) | |
| tree | 2278239c23c9cfa8abc2cfb833b598df01227ee8 /sql/mysqld.cc | |
| parent | dd6981f4d01072cbc5fa898bd6c42b54ffbb0fcf (diff) | |
| download | mariadb-git-8d11c01c595261c9c742356c0152c2152b847db9.tar.gz | |
WL#2126 - Multi_read_range.
Added the required structures and functions for
handing over multiple key ranges to the table handler.
include/my_base.h:
WL#2126 - Multi_read_range.
Moved key range flags from sql/opt_range.h to here.
Added the multi-range structure.
sql/handler.cc:
WL#2126 - Multi_read_range.
Added the new table handler methods.
sql/handler.h:
WL#2126 - Multi_read_range.
Added a new table flag.
Added a declaration for the handler buffer.
Added new elements to class handler.
Added new function declarations.
sql/mysqld.cc:
WL#2126 - Multi_read_range.
Added an option to set new system variable 'multi_range_count'.
sql/opt_range.cc:
WL#2126 - Multi_read_range.
Added initialization for the new class members.
Added initialization for the extended get_next().
Added de-initialization for the allocated buffers.
Added a buffer allocation method.
Added an inner loop to collect multiple ranges.
Adapted range collection loops to the new initialization.
sql/opt_range.h:
WL#2126 - Multi_read_range.
Moved key range flags from here to include/my_base.h.
Added new elements to class QUICK_RANGE_SELECT.
Added a copy constructor.
sql/records.cc:
WL#2126 - Multi_read_range.
Added a call of the allocation method.
sql/set_var.cc:
WL#2126 - Multi_read_range.
Added the new system variable 'multi_range_count'.
sql/sql_class.h:
WL#2126 - Multi_read_range.
Added the new system variable 'multi_range_count'.
Diffstat (limited to 'sql/mysqld.cc')
| -rw-r--r-- | sql/mysqld.cc | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/sql/mysqld.cc b/sql/mysqld.cc index 8eec97efd81..34b1fbcd364 100644 --- a/sql/mysqld.cc +++ b/sql/mysqld.cc @@ -4141,7 +4141,7 @@ enum options_mysqld OPT_MAX_SEEKS_FOR_KEY, OPT_MAX_TMP_TABLES, OPT_MAX_USER_CONNECTIONS, OPT_MAX_LENGTH_FOR_SORT_DATA, OPT_MAX_WRITE_LOCK_COUNT, OPT_BULK_INSERT_BUFFER_SIZE, - OPT_MAX_ERROR_COUNT, OPT_MYISAM_DATA_POINTER_SIZE, + OPT_MAX_ERROR_COUNT, OPT_MULTI_RANGE_COUNT, OPT_MYISAM_DATA_POINTER_SIZE, OPT_MYISAM_BLOCK_SIZE, OPT_MYISAM_MAX_EXTRA_SORT_FILE_SIZE, OPT_MYISAM_MAX_SORT_FILE_SIZE, OPT_MYISAM_SORT_BUFFER_SIZE, OPT_NET_BUFFER_LENGTH, OPT_NET_RETRY_COUNT, @@ -5137,6 +5137,11 @@ The minimum value for this variable is 4096.", "After this many write locks, allow some read locks to run in between.", (gptr*) &max_write_lock_count, (gptr*) &max_write_lock_count, 0, GET_ULONG, REQUIRED_ARG, ~0L, 1, ~0L, 0, 1, 0}, + {"multi_range_count", OPT_MULTI_RANGE_COUNT, + "Number of key ranges to request at once.", + (gptr*) &global_system_variables.multi_range_count, + (gptr*) &max_system_variables.multi_range_count, 0, + GET_ULONG, REQUIRED_ARG, 256, 1, ~0L, 0, 1, 0}, {"myisam_block_size", OPT_MYISAM_BLOCK_SIZE, "Block size to be used for MyISAM index pages.", (gptr*) &opt_myisam_block_size, |