MySQL 9.0.0
Source Code Documentation
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Thread slot in the thread table. More...
#include <srv0srv.h>
Public Attributes | |
srv_thread_type | type |
Thread type: user, utility etc. More... | |
bool | in_use |
true if this slot is in use. More... | |
bool | suspended |
true if the thread is waiting for the event of this slot. More... | |
std::chrono::steady_clock::time_point | suspend_time |
Time when the thread was suspended. More... | |
uint64_t | reservation_no |
Stores the current value of lock_wait_table_reservations, when lock_wait_table_reserve_slot is called. More... | |
std::chrono::steady_clock::duration | wait_timeout |
Wait time that if exceeded the thread will be timed out. More... | |
os_event_t | event |
Event used in suspending the thread when it has nothing to do. More... | |
que_thr_t * | thr |
Suspended query thread (only used for user threads). More... | |
Thread slot in the thread table.
os_event_t srv_slot_t::event |
Event used in suspending the thread when it has nothing to do.
bool srv_slot_t::in_use |
true if this slot is in use.
uint64_t srv_slot_t::reservation_no |
Stores the current value of lock_wait_table_reservations, when lock_wait_table_reserve_slot is called.
This can be used as a version number to avoid ABA problems. The difference lock_wait_table_reservations - reservation_no tells us how many other threads got suspended while our thr was sleeping. This can be used to determine if the wait was unfairly long, and it is time to boost trx->lock.schedule_weight. Protected by lock->wait_mutex.
std::chrono::steady_clock::time_point srv_slot_t::suspend_time |
Time when the thread was suspended.
Initialized by lock_wait_table_reserve_slot() for lock wait.
bool srv_slot_t::suspended |
true if the thread is waiting for the event of this slot.
que_thr_t* srv_slot_t::thr |
Suspended query thread (only used for user threads).
srv_thread_type srv_slot_t::type |
Thread type: user, utility etc.
std::chrono::steady_clock::duration srv_slot_t::wait_timeout |
Wait time that if exceeded the thread will be timed out.
Initialized by lock_wait_table_reserve_slot() for lock wait.