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MWL#116: Code simplifications for TC_LOG_MMAP.

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Make TC_LOG_MMAP (and TC_LOG_DUMMY) derive directly from TC_LOG, avoiding the
inheritance hierarchy TC_LOG_queued->TC_LOG_unordered.

Put the wakeup facility for commit_ordered() calls into the THD class.

Some renaming to get better names.
This commit is contained in:
unknown
2010-10-28 12:40:42 +02:00
parent b357fca4de
commit b91ad17cea
4 changed files with 119 additions and 103 deletions
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22
sql/sql_class.h
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@ -1447,10 +1447,6 @@ public:
/* container for handler's private per-connection data */
Ha_data ha_data[MAX_HA];
/* Mutex and condition for waking up threads after group commit. */
pthread_mutex_t LOCK_commit_ordered;
pthread_cond_t COND_commit_ordered;
#ifndef MYSQL_CLIENT
int binlog_setup_trx_data();
@ -2380,6 +2376,14 @@ public:
LEX_STRING get_invoker_user() { return invoker_user; }
LEX_STRING get_invoker_host() { return invoker_host; }
bool has_invoker() { return invoker_user.length > 0; }
void clear_wakeup_ready() { wakeup_ready= false; }
/*
Sleep waiting for others to wake us up with signal_wakeup_ready().
Must call clear_wakeup_ready() before waiting.
*/
void wait_for_wakeup_ready();
/* Wake this thread up from wait_for_wakeup_ready(). */
void signal_wakeup_ready();
private:
/** The current internal error handler for this thread, or NULL. */
Internal_error_handler *m_internal_handler;
@ -2418,6 +2422,16 @@ private:
*/
LEX_STRING invoker_user;
LEX_STRING invoker_host;
/*
Flag, mutex and condition for a thread to wait for a signal from another
thread.
Currently used to wait for group commit to complete, can also be used for
other purposes.
*/
bool wakeup_ready;
pthread_mutex_t LOCK_wakeup_ready;
pthread_cond_t COND_wakeup_ready;
};