Structure the client can implement to provide a custom stream reader. The functions of this structure may be called on any thread.
Base structure.
Return non-zero if at end of file.
Return true (1) if this handler performs work like accessing the file system which may block. Used as a hint for determining the thread to access the handler from.
See Implementation
Structure the client can implement to provide a custom stream reader. The functions of this structure may be called on any thread.