公开(公告)号：US09384036B1

公开(公告)日：2016-07-05

申请号：US14059218

申请日：2013-10-21

Applicant: Google Inc.

Inventor： Luiz Andre Barroso ,  James Laudon ,  Michael R. Marty

IPC: G06F9/455 ,  G06F9/46 ,  G06F9/30 ,  G06F12/08

CPC classification number: G06F9/461 ,  G06F9/3009 ,  G06F9/30123 ,  G06F9/3851 ,  G06F12/0815 ,  G06F2212/451

Abstract: A method includes performing one or more operations as requested by a thread executing on a processor, the thread having a thread context; receiving a park request from the thread, the park request received following a request from the thread for a low latency resource, wherein the cache response time is less than or equal to a resource response threshold so as to allow the thread context to be stored and retrieved from the cache in less time than the portion of time it takes to complete the request for the low latency resource; storing the thread context in the cache; detecting that the resume condition has occurred; retrieving the thread context from the cache; and resuming execution of the thread.

Abstract translation: 一种方法包括：执行在处理器上执行的线程所请求的一个或多个操作，所述线程具有线程上下文; 从所述线程接收到驻留请求，所述驻留请求是在所述线程针对低延迟资源的请求之后接收的，其中所述高速缓存响应时间小于或等于资源响应阈值，以便允许所述线程上下文被存储;以及 从比缓存时间资源完成请求所花费的时间少的时间，从缓存中检索; 将线程上下文存储在高速缓存中; 检测到恢复条件已经发生; 从缓存中检索线程上下文; 并恢复线程的执行。

公开(公告)号：US09594704B1

公开(公告)日：2017-03-14

申请号：US14109877

申请日：2013-12-17

Applicant: Google Inc.

Inventor： Benjamin C. Serebrin ,  Michael R. Marty ,  Paul Jack Turner

IPC: G06F13/24 ,  G06F9/48 ,  G06F9/32

CPC classification number: G06F13/24 ,  G06F9/327 ,  G06F9/3857 ,  G06F9/4812 ,  G06F9/5027

Abstract: A method includes for each processed interrupt: identifying an interrupt associated with a first interrupt number; determining that the interrupt is designated as a special interrupt, the special interrupt being an interrupt to be translated to a different interrupt number only if the hardware processor is in user mode; determining a current execution mode for the hardware processor; for each interrupt in operating system mode, delivering the interrupt as the first interrupt number; and for each interrupt in user mode: translating the first interrupt number to a second interrupt number; and delivering the interrupt as the second interrupt number, wherein the current execution mode is determined to be an operating system mode for at least one of the interrupts, and the current execution mode is determined to be a user mode for at least an additional one of the interrupts.

Abstract translation: 一种方法包括：对于每个处理的中断：识别与第一中断号码相关联的中断; 确定中断被指定为特殊中断，特殊中断只有在硬件处理器处于用户模式时才被转换为不同的中断号; 确定硬件处理器的当前执行模式; 对于操作系统模式中的每个中断，将中断作为第一个中断号提供; 对于用户模式中的每个中断，将第一个中断号转换为第二个中断号; 以及将所述中断作为所述第二中断号递送，其中所述当前执行模式被确定为用于所述中断中的至少一个的操作系统模式，并且所述当前执行模式被确定为用于至少另外一个 中断。

公开(公告)号：US20170109082A1

公开(公告)日：2017-04-20

申请号：US14885786

申请日：2015-10-16

Applicant: Google Inc.

Inventor： Rama Krishna Govindaraju ,  Liqun Cheng ,  Parthasarathy Ranganathan ,  Michael R. Marty ,  Andrew Gallatin

IPC: G06F3/06

CPC classification number: G06F3/0619 ,  G06F3/065 ,  G06F3/0683 ,  G06F12/0888 ,  G06F12/1081

Abstract: An example method includes during execution of a software application by a processor, receiving, by a copy processor separate from the processor, a request for an asynchronous data copy operation to copy data within a memory accessible by the copy processor, wherein the request is received from a copy manager accessible by the software application in a user space of an operating system managing execution of the software application; in response to the request, initiating, by the copy processor, the asynchronous data copy operation; continuing execution of the software application by the processor; determining, by the copy processor, that the asynchronous data copy operation has completed; and in response to determining that the asynchronous copy operation has completed, selectively notifying, by the copy processor, the software application that the asynchronous copy operation has completed.