// Returns nil for invalid handles.
func (c *Server) getHandle(id fuse.HandleID) (shandle *serveHandle) {
c.meta.Lock()
defer c.meta.Unlock()
if id < fuse.HandleID(len(c.handle)) {
shandle = c.handle[uint(id)]
}
if shandle == nil {
c.debug(missingHandle{
Handle: id,
MaxHandle: fuse.HandleID(len(c.handle)),
})
}
return
}
func (c *Server) saveHandle(handle Handle, nodeID fuse.NodeID) (id fuse.HandleID) {
c.meta.Lock()
shandle := &serveHandle{handle: handle, nodeID: nodeID}
if n := len(c.freeHandle); n > 0 {
id = c.freeHandle[n-1]
c.freeHandle = c.freeHandle[:n-1]
c.handle[id] = shandle
} else {
id = fuse.HandleID(len(c.handle))
c.handle = append(c.handle, shandle)
}
c.meta.Unlock()
return
}