diff options
Diffstat (limited to 'vendor/codeberg.org/gruf/go-atomics/error.go')
-rw-r--r-- | vendor/codeberg.org/gruf/go-atomics/error.go | 57 |
1 files changed, 0 insertions, 57 deletions
diff --git a/vendor/codeberg.org/gruf/go-atomics/error.go b/vendor/codeberg.org/gruf/go-atomics/error.go deleted file mode 100644 index 0ecc4e9ad..000000000 --- a/vendor/codeberg.org/gruf/go-atomics/error.go +++ /dev/null @@ -1,57 +0,0 @@ -package atomics - -import ( - "sync/atomic" - "unsafe" -) - -// Error provides user-friendly means of performing atomic operations on error types. -type Error struct{ ptr unsafe.Pointer } - -// NewError will return a new Error instance initialized with zero value. -func NewError() *Error { - var v error - return &Error{ - ptr: unsafe.Pointer(&v), - } -} - -// Store will atomically store error value in address contained within v. -func (v *Error) Store(val error) { - atomic.StorePointer(&v.ptr, unsafe.Pointer(&val)) -} - -// Load will atomically load error value at address contained within v. -func (v *Error) Load() error { - return *(*error)(atomic.LoadPointer(&v.ptr)) -} - -// CAS performs a compare-and-swap for a(n) error value at address contained within v. -func (v *Error) CAS(cmp, swp error) bool { - for { - // Load current value at address - ptr := atomic.LoadPointer(&v.ptr) - cur := *(*error)(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 error value into address contained within v, and returns previous value. -func (v *Error) Swap(swp error) error { - ptr := unsafe.Pointer(&swp) - ptr = atomic.SwapPointer(&v.ptr, ptr) - return *(*error)(ptr) -} |