class D4::WriteControl

• D4::WriteControl
• Reference
• Object

Overview

Coordinates progress reporting and cooperative cancellation for D4 writes.

A control may be cancelled from another fiber or thread. Callbacks run in the fiber performing the write and should return quickly.

Defined in:

d4/write_control.cr

Constructors

• .new(on_progress : Proc(WriteProgress, Nil) | Nil = nil)
• .new(&on_progress : WriteProgress -> Nil)

Instance Method Summary

• #cancel : Nil

  Requests cancellation.

• #cancelled? : Bool
• #check! : Nil

  Raises CancelledError when cancellation has been requested.

• #update(progress : WriteProgress) : Nil

  Emits a progress snapshot after checking for cancellation.

Constructor Detail

Instance Method Detail