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    • 24. 发明申请
    • System and method for sharing resources between real-time and virtualizing operating systems
    • 在实时和虚拟化操作系统之间共享资源的系统和方法
    • US20060070069A1
    • 2006-03-30
    • US10955184
    • 2004-09-30
    • Maximino AguilarMichael DayMark NutterJames Xenidis
    • Maximino AguilarMichael DayMark NutterJames Xenidis
    • G06F9/46
    • G06F9/5016G06F9/544
    • A system and method for sharing resources between real-time and virtualizing operating systems is presented. A computer system uses effective address mapping of support processors' local memory to share resources between separate operating systems. When threads are created for either operating system, the thread's corresponding processor memory is mapped into an effective address space. In doing so, the processor's local memory is accessible by the thread, regardless of whether the processor is running, or whether the processor is executing a different thread from a different operating system. For example, a computer system may have eight support processors and running two operating systems whereby the first operating system requires six support processors and the second operating system requires all eight support processors. In this example, resources are virtualized and shared between the two operating systems in order to meet the requirements of both operating systems.
    • 介绍了一种在实时和虚拟化操作系统之间共享资源的系统和方法。 计算机系统使用支持处理器的本地存储器的有效地址映射来在不同的操作系统之间共享资源。 当为任一操作系统创建线程时,线程的相应处理器内存映射到有效的地址空间。 在这样做时,处理器的本地内存可由线程访问,无论处理器是否在运行,还是处理器是否正在从不同的操作系统执行不同的线程。 例如,计算机系统可以具有八个支持处理器并且运行两个操作系统,由此第一操作系统需要六个支持处理器,而第二操作系统需要所有八个支持处理器。 在这个例子中,为了满足两个操作系统的要求,在两个操作系统之间虚拟化和共享资源。
    • 27. 发明申请
    • Methods and apparatus for efficient multi-tasking
    • 高效多任务的方法和设备
    • US20050120185A1
    • 2005-06-02
    • US10725129
    • 2003-12-01
    • Takeshi YamazakiMichael DayThuong Truong
    • Takeshi YamazakiMichael DayThuong Truong
    • G06F15/167G06F1/32G06F9/46G06F9/52G06F12/14G06F12/16G06F13/28
    • G06F9/52G06F1/3203G06F9/3004G06F9/30087G06F9/522G06F9/544
    • A system includes a shared memory; a memory interface unit coupled to the shared memory and operable to retrieve data from the shared memory at requested addresses, and to write data to the shared memory at requested addresses; and a plurality of processing units in communication with the memory interface and operable to (i) instruct the memory interface unit that data be loaded with reservation from the shared memory at a specified address such that any operations may be performed on the data, and (ii) instruct the memory interface unit that the data be stored in the shared memory at the specified address, wherein at least one of the processing units includes a status register having one or more bits indicating whether a reservation was lost: whether the data at the specified address in shared memory was modified.
    • 系统包括共享存储器; 存储器接口单元,其耦合到共享存储器并且可操作以在所请求的地址处从共享存储器检索数据,并且以请求的地址将数据写入共享存储器; 以及多个处理单元,与所述存储器接口通信,并且可操作以(i)以指定的地址指示所述存储器接口单元从所述共享存储器预先加载所述数据,使得可以对所述数据执行任何操作,并且( ii)指示存储器接口单元将数据存储在共享存储器中的指定地址处,其中至少一个处理单元包括状态寄存器,该状态寄存器具有一个或多个位,表示预留是否丢失: 共享内存中的指定地址已修改。