The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 15, 2023
Filed:
Dec. 30, 2020
Oracle International Corporation, Redwood Shores, CA (US);
Erik Duveblad, Taby, SE;
Ron Pressler, London, GB;
Oracle International Corporation, Redwood Shores, CA (US);
Abstract
Techniques for lazy copying of runtime-managed stack frames are disclosed. A runtime environment generates a runtime-managed stack including multiple frames. A topmost subset of frames includes data associated with particular instructions and a return address. A lower subset of frames includes data associated with different instructions. The runtime environment stores a copy of the topmost subset of frames in an OS-managed stack, without copying the lower subset. The particular instructions execute using the copy of the topmost subset of frames in the OS-managed stack. The runtime environment replaces, in the copy, the return address with a return barrier address. When execution of the instructions terminates, control passes to return barrier instructions, which store a copy of the lower subset of frames in the OS-managed stack and pass control to the different instructions. The different instructions execute using the copy of the lower subset of frames in the OS-managed stack.