Method GetOrSetFuncLock

zutils/shard_lock_map.go:201–206

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. WARNING: Do not perform operations on the container within f to avoid deadlocks. Returns the value and whether it was set (tr

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

// WARNING: Do not perform operations on the container within f to avoid deadlocks.
// Returns the value and whether it was set (true) or already existed (false).
func (slm ShardLockMaps) GetOrSetFuncLock(key string, f func(key string) interface{}) (interface{}, bool) {
	if v, ok := slm.Get(key); ok {
		return v, false
	}
	return slm.doSetWithLockCheckWithFunc(key, f)
}

// doSetWithLockCheck performs a set operation with lock checking
func (slm ShardLockMaps) doSetWithLockCheck(key string, val interface{}) (interface{}, bool) {