Details
| Original language | English |
|---|---|
| Patent number | US8468169B2 |
| IPC | G06F9/526 |
| Priority date | 1 Dec 2010 |
| Filing date | 1 Dec 2010 |
| Publication status | Accepted/In press - 18 Jun 2013 |
Abstract
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Patent No.: US8468169B2. Jun 18, 2013.
Research output: Patent
}
TY - PAT
T1 - Hierarchical software locking
AU - Ross, Jonathan
AU - Aigner, Ronald
AU - Rellermeyer, Jan S.
AU - Loeser, Jork
PY - 2013/6/18
Y1 - 2013/6/18
N2 - A processor chip may have a built-in hardware lock and deterministic exclusive locking of the hardware lock by execution units executing in parallel on the chip. A set of software locks may be maintained, where the execution units set and release the software locks only by first acquiring a lock of the hardware lock. A first execution unit sets a software lock after acquiring a lock of the hardware lock, and other execution units, even if exclusively locking the hardware lock, are unable to lock the software lock until after the first execution unit has reacquired a lock of the hardware lock and possibly released the software lock while exclusively locking the hardware lock. An execution unit may release a software lock after and while holding a lock of the hardware lock. The hardware lock is released when a software lock has been set or released.
AB - A processor chip may have a built-in hardware lock and deterministic exclusive locking of the hardware lock by execution units executing in parallel on the chip. A set of software locks may be maintained, where the execution units set and release the software locks only by first acquiring a lock of the hardware lock. A first execution unit sets a software lock after acquiring a lock of the hardware lock, and other execution units, even if exclusively locking the hardware lock, are unable to lock the software lock until after the first execution unit has reacquired a lock of the hardware lock and possibly released the software lock while exclusively locking the hardware lock. An execution unit may release a software lock after and while holding a lock of the hardware lock. The hardware lock is released when a software lock has been set or released.
M3 - Patent
M1 - US8468169B2
Y2 - 2010/12/01
ER -