io: add ability to associate an error with a task

Currently when a task fails, the error is never explicitly
associated with the task object, it is just passed along
through the completion callback. This adds the ability to
explicitly associate an error with the task.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This commit is contained in:
Daniel P. Berrange 2016-08-11 14:40:44 +01:00
parent 52dd99e8a4
commit 1a447e4f02
2 changed files with 55 additions and 0 deletions

View file

@ -29,6 +29,7 @@ struct QIOTask {
QIOTaskFunc func;
gpointer opaque;
GDestroyNotify destroy;
Error *err;
gpointer result;
GDestroyNotify destroyResult;
};
@ -62,6 +63,9 @@ static void qio_task_free(QIOTask *task)
if (task->destroyResult) {
task->destroyResult(task->result);
}
if (task->err) {
error_free(task->err);
}
object_unref(task->source);
g_free(task);
@ -159,6 +163,25 @@ void qio_task_abort(QIOTask *task,
}
void qio_task_set_error(QIOTask *task,
Error *err)
{
error_propagate(&task->err, err);
}
bool qio_task_propagate_error(QIOTask *task,
Error **errp)
{
if (task->err) {
error_propagate(errp, task->err);
return true;
}
return false;
}
void qio_task_set_result_pointer(QIOTask *task,
gpointer result,
GDestroyNotify destroy)