Willy Tarreau 61f799b8da MINOR: threads: add the transitions to/from the seek state ... Since our locks are based on progressive locks, we support the upgradable seek lock that is compatible with readers and upgradable to a write lock. The main purpose is to take it while seeking down a tree for modification while other threads may seek the same tree for an input (e.g. compute the next event date). The newly supported operations are: HA_RWLOCK_SKLOCK(lbl,l) pl_take_s(l) /* N --> S */ HA_RWLOCK_SKTOWR(lbl,l) pl_stow(l) /* S --> W */ HA_RWLOCK_WRTOSK(lbl,l) pl_wtos(l) /* W --> S */ HA_RWLOCK_SKTORD(lbl,l) pl_stor(l) /* S --> R */ HA_RWLOCK_WRTORD(lbl,l) pl_wtor(l) /* W --> R */ HA_RWLOCK_SKUNLOCK(lbl,l) pl_drop_s(l) /* S --> N */ HA_RWLOCK_TRYSKLOCK(lbl,l) (!pl_try_s(l)) /* N -?> S */ HA_RWLOCK_TRYRDTOSK(lbl,l) (!pl_try_rtos(l)) /* R -?> S */ Existing code paths are left unaffected so this patch doesn't affect any running code.		2020-10-16 16:53:46 +02:00
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haproxy	MINOR: threads: add the transitions to/from the seek state	2020-10-16 16:53:46 +02:00
import	CLEANUP: assorted typo fixes in the code and comments	2020-06-26 11:27:28 +02:00