#include <cstdint>
#include <deque>
#include <functional>
+#include <iosfwd>
#include <mutex>
-#include <ostream>
#include <utility>
#include <vector>
*/
typedef std::function<AsyncIOOp*()> OpFactory;
void submit(OpFactory op);
+
private:
void onCompleted(AsyncIOOp* op);
void maybeDequeue();