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1. 发明授权

US07698534B2 Reordering application code to improve processing performance 有权
标题翻译：重新排序应用程序代码以提高处理性能
公开(公告)号：US07698534B2
公开(公告)日：2010-04-13
申请号：US11708703
申请日：2007-02-21
申请人： Rodolph Gérard Jacques Ascanio Jean-Denis Perfetta , Graham Peter Wilkinson
发明人： Rodolph Gérard Jacques Ascanio Jean-Denis Perfetta , Graham Peter Wilkinson
IPC分类号： G06F9/52
CPC分类号： G06F8/445
摘要： A method of reordering a sequence of code for processing by a target data processor in order to reduce an execution time for said code on said target data processor is disclosed. The method comprises the steps of: in response to a request to execute said sequence of code, loading said sequence of code into a volatile data store associated with said target data processor; analyzing said sequence of code in relation to properties of said target data processor; identifying interlocks within said sequence of code when executing on said target data processor, in which a portion of code would be stalled while waiting for an earlier portion to complete; reordering said sequence of code to remove at least some of said interlocks; and executing said reordered sequence of code; wherein said steps of analyzing, identifying, reordering and executing are performed by said target data processor.
摘要翻译：公开了一种对由目标数据处理器进行处理的代码序列重新排序以便减少所述目标数据处理器上的所述代码的执行时间的方法。该方法包括以下步骤：响应于执行所述代码序列的请求，将所述代码序列加载到与所述目标数据处理器相关联的易失性数据存储器中; 分析与所述目标数据处理器的属性有关的所述代码序列; 当在所述目标数据处理器上执行时，识别所述代码序列内的联锁，其中一段代码将在等待较早部分完成的同时停止; 重新排序所述代码序列以去除至少一些所述互锁; 以及执行所述重新排序的代码序列; 其中由所述目标数据处理器执行所述分析，识别，重新排序和执行的步骤。

2. 发明授权

US07752424B2 Null value checking instruction 有权
标题翻译：空值检查指令
公开(公告)号：US07752424B2
公开(公告)日：2010-07-06
申请号：US11889058
申请日：2007-08-08
申请人： Rodolph Gérard Jacques Ascanio Jean-Denis Perfetta
发明人： Rodolph Gérard Jacques Ascanio Jean-Denis Perfetta
IPC分类号： G06F9/305
CPC分类号： G06F9/30021 , G06F9/30058 , G06F9/30134
摘要： A processor 2 is provided with the ability to execute program instructions in the form of Java bytecodes including a dedicated null checking instruction. The null checking instruction reads the top of stack value, compares this with a null value and jumps to an exception handling routine if the top of stack value equals the null value, otherwise the next program instruction is executed.
摘要翻译：处理器2具有执行包括专用空检查指令的Java字节码形式的程序指令的能力。空检查指令读取堆栈值的顶部，将其与空值进行比较，如果堆栈值的顶部值等于空值，则跳转到异常处理例程，否则执行下一个程序指令。

3. 发明授权

US08239861B2 Software-based unloading and reloading of an inactive function to reduce memory usage of a data processing task performed using a virtual machine 有权
标题翻译：基于软件的卸载和重新加载非活动功能，以减少使用虚拟机执行的数据处理任务的内存使用情况
公开(公告)号：US08239861B2
公开(公告)日：2012-08-07
申请号：US12068536
申请日：2008-02-07
申请人： Riaan Swart , Rodolph Gérard Jacques Ascanio Jean-Denis Perfetta , David John Butcher
发明人： Riaan Swart , Rodolph Gérard Jacques Ascanio Jean-Denis Perfetta , David John Butcher
IPC分类号： G06F9/455
CPC分类号： G06F9/44594 , G06F9/5022
摘要： A method of performing a processing task in a data processing apparatus is provided that reduces memory usage of the processing task. According to this method a Virtual Machine performs the steps of accessing platform-neutral program code in a function repository, executing the processing task on the Virtual Machine, and analysing at a current execution point, on a function-by-function basis, which functions in the function repository are inactive functions. The Virtual Machine performs software-based unloading from the function repository of at least a portion of platform-neutral program code corresponding to one or more inactive functions. A corresponding virtual machine and data processing apparatus are also provided.
摘要翻译：提供一种在数据处理装置中执行处理任务的方法，其减少处理任务的存储器使用。根据该方法，虚拟机执行在功能库中访问平台中立程序代码的步骤，在虚拟机上执行处理任务，并在逐个功能的基础上在当前执行点分析哪些功能在功能库中是非活动的功能。虚拟机从功能库执行基于软件的至少一部分对应于一个或多个非活动功能的平台中立程序代码的卸载。还提供了相应的虚拟机和数据处理装置。

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