Migrating sleeping and waking threads between wake-and-go mechanisms in a multiple processor data processing system
US8230201B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 16, 2009 |
| Grant date | Jul 24, 2012 |
| Priority date | — |
| Expiry date | Jul 12, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/505
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A wake-and-go mechanism is provided for a data processing system. The wake-and-go mechanism detects a thread running on a first processing unit within a plurality of processing units that is waiting for an event that modifies a data value associated with a target address. The wake-and-go mechanism creates a wake-and-go instance for the thread by populating a wake-and-go storage array with the target address. The operating system places the thread in a sleep state. Responsive to detecting the event that modifies the data value associated with the target address, the wake-and-go mechanism assigns the wake-and-go instance to a second processing unit within the plurality of processing units. The operating system on the second processing unit places the thread in a non-sleep state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.