Method GetOrSetFunc

zutils/shard_lock_map.go:190–195

GetOrSetFunc gets the value for the given key, or sets it using the provided function if it doesn't exist. The function f is called outside the lock to avoid deadlocks. Returns the value and whether it was set (true) or already existed (false).

(key string, f func(key string) interface{})

// The function f is called outside the lock to avoid deadlocks.
// Returns the value and whether it was set (true) or already existed (false).
func (slm ShardLockMaps) GetOrSetFunc(key string, f func(key string) interface{}) (interface{}, bool) {
	if v, ok := slm.Get(key); ok {
		return v, false
	}
	return slm.doSetWithLockCheck(key, f(key))
}

// GetOrSetFuncLock gets the value for the given key, or sets it using the provided function if it doesn't exist.
// The function f is called inside the lock for atomic operations.