diff options
Diffstat (limited to 'src/third_party/wiredtiger/src/include/mutex.h')
| -rw-r--r-- | src/third_party/wiredtiger/src/include/mutex.h | 20 |
1 files changed, 1 insertions, 19 deletions
diff --git a/src/third_party/wiredtiger/src/include/mutex.h b/src/third_party/wiredtiger/src/include/mutex.h index 04679884930..f0f8173bad4 100644 --- a/src/third_party/wiredtiger/src/include/mutex.h +++ b/src/third_party/wiredtiger/src/include/mutex.h @@ -42,7 +42,7 @@ typedef union { /* Read/write lock */ struct { uint16_t writers; /* Now serving for writers */ uint16_t readers; /* Now serving for readers */ - uint16_t users; /* Next available ticket number */ + uint16_t next; /* Next available ticket number */ uint16_t __notused; /* Padding */ } s; } wt_rwlock_t; @@ -59,24 +59,6 @@ struct __wt_rwlock { }; /* - * A light weight lock that can be used to replace spinlocks if fairness is - * necessary. Implements a ticket-based back off spin lock. - * The fields are available as a union to allow for atomically setting - * the state of the entire lock. - */ -struct __wt_fair_lock { - union { - uint32_t lock; - struct { - uint16_t owner; /* Ticket for current owner */ - uint16_t waiter; /* Last allocated ticket */ - } s; - } u; -#define fair_lock_owner u.s.owner -#define fair_lock_waiter u.s.waiter -}; - -/* * Spin locks: * * WiredTiger uses spinlocks for fast mutual exclusion (where operations done |