Searched refs:old (Results 1 – 6 of 6) sorted by relevance
10 … struct lockref old; \11 … BUILD_BUG_ON(sizeof(old) != sizeof(uint64_t)); \12 … old.lock_count = READ_ONCE(__lock_ref->lock_count); \13 … while (likely(!spin_is_locked(&old.lock))) \15 … struct lockref new = old; \17 … if (likely(arch_try_cmpxchg(&__lock_ref->lock_count, &old.lock_count, new.lock_count))) \61 if (old.count <= 0) return false; in lockref_inc_not_zero()90 if (old.count <= 0) break; in lockref_dec()121 if (old.count <= 0) return -1; in lockref_dec_return()142 if (old.count <= 1) return false; in lockref_dec_not_zero()[all …]
58 let mut old: LockRef = LockRef::INIT; in cmpxchg_loop() localVariable59 old.count = unsafe { read_volatile(&self.count) }; in cmpxchg_loop()61 if !old.lock.is_locked() { in cmpxchg_loop()65 read_volatile(&mut old as *mut LockRef as *mut usize as *mut u64); in cmpxchg_loop()76 if old.count <= 0 { in cmpxchg_loop()83 if old.count < 0 { in cmpxchg_loop()90 if old.count <= 0 { in cmpxchg_loop()96 if old.count <= 1 { in cmpxchg_loop()106 &mut old as *mut LockRef as *mut usize as *mut u64, in cmpxchg_loop()
34 [old] "+a"(__old) \45 [old] "+a"(__old) \56 [old] "+a"(__old) \67 [old] "+a"(__old) \
76 static inline void list_replace(struct List *old, struct List *new) in list_replace() argument78 if (old->prev != NULL) in list_replace()79 old->prev->next = new; in list_replace()80 new->prev = old->prev; in list_replace()81 if (old->next != NULL) in list_replace()82 old->next->prev = new; in list_replace()83 new->next = old->next; in list_replace()85 old->prev = NULL; in list_replace()86 old->next = NULL; in list_replace()
55 …没有别的线程持有锁，然后改变引用计数，同时通过`lock cmpxchg`指令验证在更改发生时，没有其他线程持有锁，并且当前的目标lockref的值与old变量中存储的一致，从而将新值存储到目标l…145   该函数与`lockref_dec_or_lock_not_zero()`的区别在于，当`cmpxchg()`时发现`old.count≤1`时，该函数会直接返回`Err(-1…161   该函数与`lockref_dec_not_zero()`的区别在于，当cmpxchg()时发现`old.count≤1`时，该函数会尝试加锁来进行操作，而`lockref_d…
111 ### `void list_replace(struct List *old, struct List *new)`115   将链表中的old结点替换成new结点119 **old**