公开(公告)号：US08543775B2

公开(公告)日：2013-09-24

申请号：US13714132

申请日：2012-12-13

Applicant: Advanced Micro Devices, Inc.

Inventor： Jaewoong Chung ,  David S Christie ,  Michael Hohmuth ,  Stephan Diestelhorst ,  Martin Pohlack ,  Luke Yen

IPC: G06F12/00

CPC classification number: G06F12/00 ,  G06F9/3004 ,  G06F9/30087 ,  G06F9/3834 ,  G06F9/3857

Abstract: A method and apparatus are disclosed for implementing early release of speculatively read data in a hardware transactional memory system. A processing core comprises a hardware transactional memory system configured to receive an early release indication for a specified word of a group of words in a read set of an active transaction. The early release indication comprises a request to remove the specified word from the read set. In response to the early release request, the processing core removes the group of words from the read set only after determining that no word in the group other than the specified word has been speculatively read during the active transaction.

Abstract translation: 公开了用于实现在硬件事务存储器系统中推测读取数据的早期释放的方法和装置。 处理核心包括硬件事务存储器系统，其被配置为接收活动事务的读取集合中的一组单词的指定字的早期释放指示。 早期释放指示包括从读取集中移除指定单词的请求。 响应于早期释放请求，处理核心仅在确定在活动事务期间没有推测性地读取除了指定单词之外的组中的任何单词之后才从读取集合中移除单词组。