Asynchronous input/output (I/O) using alternate stack switching in kernel space

摘要

A mechanism for asynchronous input/output (I/O) using second stack switching in kernel space is disclosed. A method of the invention includes receiving, by a kernel executing in a computing device, an input/output (I/O) request from an application thread executing using a first stack, allocating a second stack in kernel space of the computing device, switching execution of the thread to the second stack, and processing the I/O request synchronously using the second stack.

主权项

1. A method, comprising:
receiving, by a kernel executed by a processing device, an input/output (I/O) request from a thread corresponding to an application, the thread executing using a first stack; allocating a second stack in kernel space of the processing device, the second stack having higher priority than the first stack; switching execution of the thread to the second stack; processing the I/O request synchronously using the second stack; and switching execution of the thread to the first stack when execution of the thread is blocked while processing the I/O request using the second stack.