diff options
Diffstat (limited to 'vendor/codeberg.org/gruf/go-atomics/interface.go')
-rw-r--r-- | vendor/codeberg.org/gruf/go-atomics/interface.go | 57 |
1 files changed, 0 insertions, 57 deletions
diff --git a/vendor/codeberg.org/gruf/go-atomics/interface.go b/vendor/codeberg.org/gruf/go-atomics/interface.go deleted file mode 100644 index f0d1c4355..000000000 --- a/vendor/codeberg.org/gruf/go-atomics/interface.go +++ /dev/null @@ -1,57 +0,0 @@ -package atomics - -import ( - "sync/atomic" - "unsafe" -) - -// Interface provides user-friendly means of performing atomic operations on interface{} types. -type Interface struct{ ptr unsafe.Pointer } - -// NewInterface will return a new Interface instance initialized with zero value. -func NewInterface() *Interface { - var v interface{} - return &Interface{ - ptr: unsafe.Pointer(&v), - } -} - -// Store will atomically store interface{} value in address contained within v. -func (v *Interface) Store(val interface{}) { - atomic.StorePointer(&v.ptr, unsafe.Pointer(&val)) -} - -// Load will atomically load interface{} value at address contained within v. -func (v *Interface) Load() interface{} { - return *(*interface{})(atomic.LoadPointer(&v.ptr)) -} - -// CAS performs a compare-and-swap for a(n) interface{} value at address contained within v. -func (v *Interface) CAS(cmp, swp interface{}) bool { - for { - // Load current value at address - ptr := atomic.LoadPointer(&v.ptr) - cur := *(*interface{})(ptr) - - // Perform comparison against current - if !(cur == cmp) { - return false - } - - // Attempt to replace pointer - if atomic.CompareAndSwapPointer( - &v.ptr, - ptr, - unsafe.Pointer(&swp), - ) { - return true - } - } -} - -// Swap atomically stores new interface{} value into address contained within v, and returns previous value. -func (v *Interface) Swap(swp interface{}) interface{} { - ptr := unsafe.Pointer(&swp) - ptr = atomic.SwapPointer(&v.ptr, ptr) - return *(*interface{})(ptr) -} |