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Merge bodhi.(none):/opt/local/work/mysql-5.0-runtime

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into  bodhi.(none):/opt/local/work/mysql-5.1-runtime
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kostja@bodhi.(none)
2007-07-31 20:00:05 +04:00
parent be83a97fa6 80b48aea43
commit 4b0bf30008
7 changed files with 178 additions and 22 deletions
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34
sql/handler.h
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@@ -992,6 +992,7 @@ public:
uint ref_length;
FT_INFO *ft_handler;
enum {NONE=0, INDEX, RND} inited;
bool locked;
bool implicit_emptied; /* Can be !=0 only if HEAP */
const COND *pushed_cond;
/*
@@ -1022,11 +1023,13 @@ public:
estimation_rows_to_insert(0), ht(ht_arg),
ref(0), key_used_on_scan(MAX_KEY), active_index(MAX_KEY),
ref_length(sizeof(my_off_t)),
ft_handler(0), inited(NONE), implicit_emptied(0),
ft_handler(0), inited(NONE),
locked(FALSE), implicit_emptied(0),
pushed_cond(0), next_insert_id(0), insert_id_for_cur_row(0)
{}
virtual ~handler(void)
{
DBUG_ASSERT(locked == FALSE);
/* TODO: DBUG_ASSERT(inited == NONE); */
}
virtual handler *clone(MEM_ROOT *mem_root);
@@ -1591,8 +1594,10 @@ public:
/* lock_count() can be more than one if the table is a MERGE */
virtual uint lock_count(void) const { return 1; }
/*
NOTE that one can NOT rely on table->in_use in store_lock(). It may
/**
Is not invoked for non-transactional temporary tables.
@note that one can NOT rely on table->in_use in store_lock(). It may
refer to a different thread if called from mysql_lock_abort_for_thread().
*/
virtual THR_LOCK_DATA **store_lock(THD *thd,
@@ -1723,6 +1728,29 @@ private:
overridden by the storage engine class. To call these methods, use
the corresponding 'ha_*' method above.
*/
/**
Is not invoked for non-transactional temporary tables.
Tells the storage engine that we intend to read or write data
from the table. This call is prefixed with a call to handler::store_lock()
and is invoked only for those handler instances that stored the lock.
Calls to rnd_init/index_init are prefixed with this call. When table
IO is complete, we call external_lock(F_UNLCK).
A storage engine writer should expect that each call to
::external_lock(F_[RD|WR]LOCK is followed by a call to
::external_lock(F_UNLCK). If it is not, it is a bug in MySQL.
The name and signature originate from the first implementation
in MyISAM, which would call fcntl to set/clear an advisory
lock on the data file in this method.
@param lock_type F_RDLCK, F_WRLCK, F_UNLCK
@return non-0 in case of failure, 0 in case of success.
When lock_type is F_UNLCK, the return value is ignored.
*/
virtual int external_lock(THD *thd __attribute__((unused)),
int lock_type __attribute__((unused)))
{