公开(公告)号：US20130111446A1

公开(公告)日：2013-05-02

申请号：US13719793

申请日：2012-12-19

Applicant: Apple Inc.

Inventor： Gerald Blaine Garst, JR. ,  William Bumgarner ,  Fariborz Jahanian ,  Christopher Arthur Lattner

IPC: G06F11/36

CPC classification number: G06F11/362 ,  G06F8/443 ,  G06F9/4484 ,  G06F12/023

Abstract: Methods, software media, compilers and programming techniques are described for creating copyable stack-based closures, such as a block, for languages which allocate automatic or local variables on a stack memory structure. In one exemplary method, a data structure of the block is first written to the stack memory structure, and this may be the automatic default operation, at run-time, for the block; then, a block copy instruction, added explicitly (in one embodiment) by a programmer during creation of the block, is executed to copy the block to a heap memory structure. The block includes a function pointer that references a function which uses data in the block.