Patent · US Active

Release of latches for garbage collection

US11386102B2 · kind B2 · utility

0Cited by

2References

20Claims

0Family size

Assignee

SAP SE · DE

Inventors

Christina Teflioudi · Heidelberg, DE
Paul Willems · Heidelberg, DE
Till Merker · Sandhausen, DE

Key dates

Filing date	Apr 1, 2019
Grant date	Jul 12, 2022
Priority date	—
Expiry date	Oct 11, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG06F9/541
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A query is received at a database execution engine. The query is executed by the database execution engine, the executing including executing one or more threads that operate on versions of data of the delta fragment; acquiring and releasing, by a first thread, a latch on a first version of the data of the delta fragment, the releasing is performed prior to the first thread entering a wait state; and reclaiming the first version of the data of the delta fragment from memory and during execution of the query. Related systems, methods, and articles of manufacture are also described.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.