7.25.2. Global configurations¶
7.25.2.1. Summary¶
Groonga has the global configurations. You can access them by API.
7.25.2.2. Reference¶
- 
int grn_get_lock_timeout(void)¶
- Returns the lock timeout. - grn_ctxacquires a lock for updating a shared value. If other- grn_ctxis already updating the same value,- grn_ctxthat try to acquire a lock can’t acquires a lock. The- grn_ctxthat can’t acquires a lock waits 1 millisecond and try to acquire a lock again. The try is done- timeouttimes. If the- grn_ctxthat can’t acquires a lock until- timeouttimes, the tries are failed.- The default lock timeout is - 10000000. It means that Groonga doesn’t report a lock failure until about 3 hours. (1 * 10000000 [msec] = 10000 [sec] = 166.666… [min] = 2.777… [hour])- Returns
- The lock timeout. 
 
- 
grn_rc grn_set_lock_timeout(int timeout)¶
- Sets the lock timeout. - See - grn_get_lock_timeout()about lock timeout.- There are some special values for - timeout.- 0: It means that Groonga doesn’t retry acquiring a lock. Groonga reports a failure after one lock acquirement failure.
- negative value: It means that Groonga retries acquiring a lock until Groonga can acquire a lock. 
 - Parameters
- timeout – The new lock timeout. 
 
- Returns
- GRN_SUCCESS. It doesn’t fail.