E2kOperationCancelFunc ()

void                (*E2kOperationCancelFunc)           (E2kOperation *op,
                                                         gpointer owner,
                                                         gpointer data);

e2k_operation_start ()

void                e2k_operation_start                 (E2kOperation *op,
                                                         E2kOperationCancelFunc canceller,
                                                         gpointer owner,
                                                         gpointer data);

This starts a single cancellable operation using op. If op has already been cancelled, this will invoke canceller immediately.

(If op is NULL, e2k_operation_start() is a no-op.)

e2k_operation_finish ()

void                e2k_operation_finish                (E2kOperation *op);

This finishes the current cancellable operation on op. Attempting to cancel op after this point will have no effect until another operation is started on it.

(If op is NULL, e2k_operation_finish() is a no-op.)