公开(公告)号：WO2006111881A3

公开(公告)日：2007-01-04

申请号：PCT/IB2006051075

申请日：2006-04-07

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  HENRIKSSON TOMAS

Inventor： HENRIKSSON TOMAS

IPC: G06F9/42 ,  G06F9/46

CPC classification number: G06F9/4856 ,  G06F9/30058 ,  G06F9/3851 ,  G06F9/4426 ,  G06F9/4843 ,  G06F15/82

Abstract: The present invention relates to the implementation for implementing multi-tasking on a digital signal processor. For that purpose blocking functions are arranged such that they do not make use of a processor's hardware stack. Respective function calls are replaced with a piece of inline assembly code, which in stead performs a branch to the correct routine for carrying out said function. If a blocking condition of the blocking function is encountered, a task switch can be done to resume another task. Whilst the hardware stack is not used when a task switch might have to occur, mixed-up contents of the hardware stack among function calls performed by different tasks are avoided.

Abstract translation: 本发明涉及在数字信号处理器上实现多任务的实现。 为了这个目的，封锁功能被布置成使得它们不使用处理器的硬件堆栈。 相应的函数调用被一段内联汇编代码所取代，代替执行分支到用于执行所述函数的正确例程。 如果遇到阻塞功能的阻塞条件，则可以完成任务切换以恢复其他任务。 虽然可能需要发生任务切换时不使用硬件堆栈，但是避免了由不同任务执行的功能调用中硬件堆栈的混合内容。

公开(公告)号：WO2010013189A3

公开(公告)日：2010-03-25

申请号：PCT/IB2009053260

申请日：2009-07-27

Applicant: NXP BV ,  HENRIKSSON TOMAS ,  STEFFENS ELISABETH FRANCISCA M

Inventor： HENRIKSSON TOMAS ,  STEFFENS ELISABETH FRANCISCA MARIA

IPC: G06F13/16

CPC classification number: G06F12/00 ,  G06F13/1642

Abstract: Requests from a plurality of different agents (10) are passed to a request handler via a request concentrator. In front of the request concentrator the requests are queued in a plurality of queues (12). A first one of the agents is configured to issue a priority changing command with a defined position relative to pending requests issued by the first one of the agents (10) to the first one of the queues (12). An arbiter (16), makes successive selections selecting queues (12) from which the request concentrator (14) will pass requests to the request handler (18), based on relative priorities assigned to the queues (12). The arbiter (16) responds to the priority changing command by changing the priority of the first one of the queues (12), selectively for a duration while the pending requests up to the defined position are in the first one of the queues (12). Different queues may be provided for read and write requests from the first one of the agents. In this case, the priority raising request from the agent may be used to raise the priority level of the write queue temporarily to the level of the read queue, until all write requests issued before the priority raising command from the agent have been passed to the request handler.

Abstract translation: 通过请求集中器将来自多个不同代理（10）的请求传递给请求处理程序。 在请求集中器之前，请求在多个队列（12）中排队。 第一代理被配置为发出具有相对于第一代理（10）向队列（12）中的第一队列发出的未决请求的定义位置的优先级改变命令。 仲裁器（16）基于分配给队列（12）的相对优先级，进行选择队列（12）的连续选择，请求集中器（14）将根据队列（12）将请求传递到请求处理器（18）。 仲裁器（16）通过改变第一个队列（12）的优先级，选择性地持续一段时间，直到到定义位置的未决请求在队列（12）中的第一个队列中时，仲裁器（16） 。 可以为来自第一个代理的读取和写入请求提供不同的队列。 在这种情况下，来自代理的优先级提升请求可用于将写入队列的优先级暂时提高到读取队列的级别，直到在来自代理的优先级提升命令之前发出的所有写入请求已被传递给 请求处理器。