"Server Variables for Plugins"
Implement support for plugins to declare server variables.
Demonstrate functionality by removing InnoDB specific code from sql/*
New feature for HASH - HASH_UNIQUE flag
New feature for DYNAMIC_ARRAY - initializer accepts preallocated ptr.
Completed support for plugin reference counting.
- Avoid overflow in sec_since_epoch by shifting the time
back 2 days for times close to the maximum range of my_time_t
- Improve comment about why we need my_time_t
- Patch will also fix timezone2.test
Fixed compile-pentium64 scripts
Fixed wrong estimate of update_with_key_prefix in sql-bench
Merge bk-internal.mysql.com:/home/bk/mysql-5.1 into mysql.com:/home/my/mysql-5.1
Fixed unsafe define of uint4korr()
Fixed that --extern works with mysql-test-run.pl
Small trivial cleanups
This also fixes a bug in counting number of rows that are updated when we have many simultanous queries
Move all connection handling and command exectuion main loop from sql_parse.cc to sql_connection.cc
Split handle_one_connection() into reusable sub functions.
Split create_new_thread() into reusable sub functions.
Added thread_scheduler; Preliminary interface code for future thread_handling code.
Use 'my_thread_id' for internal thread id's
Make thr_alarm_kill() to depend on thread_id instead of thread
Make thr_abort_locks_for_thread() depend on thread_id instead of thread
In store_globals(), set my_thread_var->id to be thd->thread_id.
Use my_thread_var->id as basis for my_thread_name()
The above changes makes the connection we have between THD and threads more soft.
Added a lot of DBUG_PRINT() and DBUG_ASSERT() functions
Fixed compiler warnings
Fixed core dumps when running with --debug
Removed setting of signal masks (was never used)
Made event code call pthread_exit() (portability fix)
Fixed that event code doesn't call DBUG_xxx functions before my_thread_init() is called.
Made handling of thread_id and thd->variables.pseudo_thread_id uniform.
Removed one common 'not freed memory' warning from mysqltest
Fixed a couple of usage of not initialized warnings (unlikely cases)
Suppress compiler warnings from bdb and (for the moment) warnings from ndb
- The condition variable implementation "lost" a signal to
WaitOnSingleObject when a semaphore was released.
- The signal could be consumed by a new call to pthread_cond_wait
before all waiting threads had awoken.
- The new implementation of pthread_cond_* uses events
instead of semaphores. It also uses an extra lock to protect entry
into new cond wait before the broadcast has finished.
Under high load it was possible that memory mapping was started on a table
while other threads were working with the table.
I fixed the start of memory mapping so that it is done at the first table
open or when the requesting thread is using the table exclusively only.
can crash under load
Resizing a key cache while it was in heavy use could crash the
server. There were several race conditions.
I reworked some of the algorithms to fix the race conditions.
No test case. Repeating the crashes requires heavy concurrent
load on the key cache. A test script is attached to the bug report.
More explanations to the changes are contained in a text file
attached to the bug report.
index_read(), index_read_idx(), index_read_last(), and
records_in_range() - instead of 'uint keylen' argument take
'ulonglong keypart_map', a bitmap showing which keyparts are
present in the key value.
Fallback method is provided for handlers that are lagging behind.
