Method doSetWithLockCheckWithFunc

zutils/shard_lock_map.go:223–235

doSetWithLockCheckWithFunc performs a set operation with function execution inside lock

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

// doSetWithLockCheckWithFunc performs a set operation with function execution inside lock
func (slm ShardLockMaps) doSetWithLockCheckWithFunc(key string, f func(key string) interface{}) (interface{}, bool) {
	shard := slm.GetShard(key)
	shard.Lock()
	defer shard.Unlock()

	if got, ok := shard.items[key]; ok {
		return got, false
	}

	val := f(key)
	shard.items[key] = val
	return val, true
}

// Clear removes all items from map.
func (slm ShardLockMaps) Clear() {