Nested speculative regions for a synchronization facility

摘要

An apparatus, computer readable medium, and method of performing nested speculative regions are presented. The method includes responding to entering a speculative region by storing link information to an abort handler and responding to a commit command by removing link information from the abort handler. The method may include storing link information to the abort handler associated with the speculative region. When the speculative region is nested, the method may include storing link information to an abort handler associated with a previous speculative region. Removing link information may include removing link information from the abort handler associated with the corresponding speculative region. The method may include restoring link information to the abort handler associated with a previous speculative region. Responding to an abort command may include running the abort handler associated with the aborted speculative region. The method may include running the abort handler of each previous speculative region.

主权项

1. A method of performing an abort of a speculative region of code in nested speculative regions of code, the method comprising:
in response to entering a nested speculative region of code, storing link information to an abort handler associated with a previous speculative region of code, wherein the link information is used by an abort handler associated with the nested speculative region of code to link the abort handler associated with the nested speculative region of code with the abort handler associated with the previous speculative region of code; and in response to a commit command, removing link information from the abort handler.