专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06978448B1 Method and apparatus for rewriting bytecodes to minimize runtime checks 有权
标题翻译：用于重写字节码以最小化运行时间检查的方法和装置
公开(公告)号：US06978448B1
公开(公告)日：2005-12-20
申请号：US09841759
申请日：2001-04-24
申请人： Christopher J. Plummer , Nedim Fresko , Richard D. Tuck
发明人： Christopher J. Plummer , Nedim Fresko , Richard D. Tuck
IPC分类号： G06F9/44 , G06F9/45
CPC分类号： G06F8/443 , G06F9/4488
摘要： Methods and apparatus for reducing the number of runtime checks performed during the execution of a virtual machine. According to one aspect of the present invention, a computer system includes a preloader, a compiler, and a virtual machine. The preloader is arranged to determine whether a bytecode makes an active reference to a class which requires an execution of a static initializer, and is also arranged to determine if the class has a superclass which requires the execution of the static initializer. The compiler is arranged to accept a source file generated by the preloader as input and to produce an object file, and the virtual machine is arranged to execute the object file.
摘要翻译：用于减少在执行虚拟机期间执行的运行时检查的数量的方法和装置。根据本发明的一个方面，计算机系统包括预加载器，编译器和虚拟机。预加载器被布置成确定字节码是否对需要执行静态初始化器的类进行活动引用，并且还被布置为确定该类是否具有需要执行静态初始化器的超类。编译器被安排为接受由预加载器生成的源文件作为输入并产生目标文件，虚拟机被安排为执行目标文件。

2. 发明授权

US08104085B2 Hybrid system implementing distinct and co-existing application execution environments and methods for implementing the same 有权
标题翻译：实现独立和共存的应用程序执行环境的混合系统及其实现方法
公开(公告)号：US08104085B2
公开(公告)日：2012-01-24
申请号：US10877410
申请日：2004-06-24
申请人： Nedim Fresko , Richard D. Tuck , Dean R. E. Long
发明人： Nedim Fresko , Richard D. Tuck , Dean R. E. Long
IPC分类号： G06F12/00 , G06F12/14 , G06F13/00 , G06F9/44
CPC分类号： G06F9/445
摘要： A hybrid system is provided. The system includes a computing device implementing a first application execution environment (AEE) and a second AEE. The first AEE is configured to be isolated from the second AEE. The first software application associated with the first AEE is configured to be processed on the first AEE such that the first software application is denied direct access to the second AEE. A second software application associated with the second AEE is configured to be processed on the second AEE such that the second software application is denied direct access to the first AEE.
摘要翻译：提供混合系统。该系统包括实现第一应用执行环境（AEE）和第二AEE的计算设备。第一个AEE配置为与第二个AEE隔离。与第一AEE相关联的第一软件应用被配置为在第一AEE处理，使得第一软件应用被拒绝直接访问第二AEE。与第二AEE相关联的第二软件应用被配置为在第二AEE上进行处理，使得第二软件应用被拒绝直接访问第一AEE。

3. 发明授权

US08756681B2 Hybrid system implementing distinct and co-existing application execution environments and methods for implementing the same 有权
标题翻译：实现独立和共存的应用程序执行环境的混合系统及其实现方法
公开(公告)号：US08756681B2
公开(公告)日：2014-06-17
申请号：US13341277
申请日：2011-12-30
申请人： Nedim Fresko , Richard D. Tuck , Dean R. E. Long
发明人： Nedim Fresko , Richard D. Tuck , Dean R. E. Long
IPC分类号： G06F21/00
CPC分类号： G06F9/445
摘要： A hybrid system is provided. The system includes a computing device implementing a first application execution environment (AEE) and a second AEE. The first AEE is configured to be isolated from the second AEE. The first software application associated with the first AEE is configured to be processed on the first AEE such that the first software application is denied direct access to the second AEE. A second software application associated with the second AEE is configured to be processed on the second AEE such that the second software application is denied direct access to the first AEE.
摘要翻译：提供混合系统。该系统包括实现第一应用执行环境（AEE）和第二AEE的计算设备。第一个AEE配置为与第二个AEE隔离。与第一AEE相关联的第一软件应用被配置为在第一AEE处理，使得第一软件应用被拒绝直接访问第二AEE。与第二AEE相关联的第二软件应用被配置为在第二AEE上被处理，使得第二软件应用被拒绝直接访问第一AEE。

4. 发明授权

US07647586B2 System and method for providing exceptional flow control in protected code through watchpoints 有权
标题翻译：通过观察点在保护代码中提供卓越的流量控制的系统和方法
公开(公告)号：US07647586B2
公开(公告)日：2010-01-12
申请号：US10918131
申请日：2004-08-13
申请人： Dean R. E. Long , Christopher J. Plummer , Nedim Fresko
发明人： Dean R. E. Long , Christopher J. Plummer , Nedim Fresko
IPC分类号： G06F9/44 , G06F9/45
CPC分类号： G06F9/45504 , G06F11/3644
摘要： A system and method for providing exceptional flow control in protected code through watchpoints is described. Code is generated. The generated code includes a sequence of normal operations and is subject to protection against copying during execution of the generated code. Execution points within the generated code are identified. A watchpoint corresponding to each of the execution points is set. An exception handler associated with each watchpoint is defined and includes operations exceptional to the normal operations sequence that are performed upon a triggering of each watchpoint during execution of the generated code.
摘要翻译：描述了通过观察点在保护代码中提供异常流控制的系统和方法。代码生成。生成的代码包括正常操作的顺序，并且在执行生成的代码期间受到保护以防止复制。识别生成代码内的执行点。设置与各执行点对应的观察点。定义与每个观察点相关联的异常处理程序，并且包括在执行生成的代码期间触发每个观察点时执行的正常操作序列的操作异常。

5. 发明授权

US07770169B2 Thread rendezvous for read-only code in an object-oriented computing environment 有权
标题翻译：面向对象计算环境中的只读代码的线程会合
公开(公告)号：US07770169B2
公开(公告)日：2010-08-03
申请号：US10847779
申请日：2004-05-17
申请人： Nedim Fresko , Christopher J. Plummer , Dean R. Long
发明人： Nedim Fresko , Christopher J. Plummer , Dean R. Long
IPC分类号： G06F9/46 , G06F12/00
CPC分类号： G06F9/3009 , G06F8/458 , G06F9/30043 , G06F9/3851 , G06F9/52 , G06F9/522 , G06F12/0253
摘要： Techniques for assuring thread rendezvous for a plurality of threads executing in a computing system are disclosed. Techniques can be used to assure thread rendezvous for read-only code in a manner that is more efficient than polling techniques. A Light-weight, Yet Trappable On Demand (LYTOD) instruction can be generated for code that is executed by one or more threads. Typically, a LYTOD instruction is generated at critical points of the code in order to assure safe-point thread rendezvous. The LYTOD is a lightweight instruction that can change its behavior from a lightweight instruction to an instruction that causes a trap when executed. The LYTOD can, for example, be implemented as a read-from-memory instruction that operates to load a register with a content of a valid memory location.
摘要翻译：公开了用于确保在计算系统中执行的多个线程的线程会合的技术。技术可以用于以比轮询技术更有效的方式来确保只读代码的线程会合。可以为由一个或多个线程执行的代码生成轻量级，可追踪按需（LYTOD）指令。通常，在代码的关键点生成LYTOD指令，以确保安全点线程会合。 LYTOD是一个轻量级的指令，可以将其行为从轻量级指令更改为在执行时引发陷阱的指令。例如，LYTOD可以实现为从存储器读取指令，其操作用于加载具有有效存储器位置的内容的寄存器。

6. 发明申请

US20120102567A1 Hybrid System Implementing Distinct and Co-existing Application Execution Environments and Methods for Implementing the Same 有权
标题翻译：混合系统实现不同和共存的应用执行环境及其实现方法
公开(公告)号：US20120102567A1
公开(公告)日：2012-04-26
申请号：US13341277
申请日：2011-12-30
申请人： Nedim Fresko , Richard D. Tuck , Dean R.E. Long
发明人： Nedim Fresko , Richard D. Tuck , Dean R.E. Long
IPC分类号： G06F21/00 , G06F9/455
CPC分类号： G06F9/445
摘要： A hybrid system is provided. The system includes a computing device implementing a first application execution environment (AEE) and a second AEE. The first AEE is configured to be isolated from the second AEE. The first software application associated with the first AEE is configured to be processed on the first AEE such that the first software application is denied direct access to the second AEE. A second software application associated with the second AEE is configured to be processed on the second AEE such that the second software application is denied direct access to the first AEE.
摘要翻译：提供混合系统。该系统包括实现第一应用执行环境（AEE）和第二AEE的计算设备。第一个AEE配置为与第二个AEE隔离。与第一AEE相关联的第一软件应用被配置为在第一AEE处理，使得第一软件应用被拒绝直接访问第二AEE。与第二AEE相关联的第二软件应用被配置为在第二AEE上被处理，使得第二软件应用被拒绝直接访问第一AEE。

7. 发明授权

US07472383B2 System and method for providing exceptional flow control in protected code through memory layers 有权
标题翻译：通过内存层在受保护的代码中提供卓越的流量控制的系统和方法
公开(公告)号：US07472383B2
公开(公告)日：2008-12-30
申请号：US10918130
申请日：2004-08-13
申请人： Dean R. E. Long , Nedim Fresko , Christopher J. Plummer
发明人： Dean R. E. Long , Nedim Fresko , Christopher J. Plummer
IPC分类号： G06F9/45
CPC分类号： G06F9/45504 , G06F11/3624 , G06F12/0269
摘要： A system and method for providing exceptional flow control in protected code through memory layers. Code is generated. The generated code includes a sequence of normal operations and is subject to protection against copying during execution of the generated code. The generated code is instantiated as a master process into a master layer in a memory space. The master process is cloned by instantiating a copy of the master process as a child layer in the memory space. Execution points within the generated code are identified. A copy of at least a portion of the generated code containing each execution point as an exception layer is instantiated in the memory space. The generated code in the exception layer is patched at each identified execution point with operations exceptional to the normal operations sequence and which are performed upon a triggering of each execution point during execution of the generated code.
摘要翻译：一种用于通过存储器层在受保护代码中提供异常流控制的系统和方法。代码生成。生成的代码包括正常操作的顺序，并且在执行生成的代码期间受到保护以防止复制。将生成的代码作为主进程实例化为内存空间中的主层。通过将主进程的副本实例化为内存空间中的子层来克隆主进程。识别生成代码内的执行点。将包含每个执行点的生成代码的至少一部分的副本作为异常层在内存空间中被实例化。异常层中生成的代码在每个识别的执行点处被修补，其中操作与正常操作序列异常，并且在执行生成的代码期间触发每个执行点时执行。

8. 发明授权

US06836782B1 Method and apparatus for implementing modular garbage collectors 有权
标题翻译：用于实施模块化垃圾收集器的方法和装置
公开(公告)号：US06836782B1
公开(公告)日：2004-12-28
申请号：US09836927
申请日：2001-04-17
申请人： Nedim Fresko , Dean R. E. Long , Christopher J. Plummer
发明人： Nedim Fresko , Dean R. E. Long , Christopher J. Plummer
IPC分类号： G06F1730
CPC分类号： G06F12/0253 , Y10S707/99931 , Y10S707/99957
摘要： Methods and apparatus for efficiently enabling garbage collectors to be swapped into and out of virtual machine environments are disclosed. According to one aspect of the present invention, an interface for reclaiming memory in a multi-threaded virtual machine environment that has a virtual machine includes a first module that is associated with the virtual machine and a second module that is separate from the first module but interfaces with the first module. The first module includes a first routine for initiating a garbage collection process within the virtual machine environment, a second routine for scanning roots associated with the virtual machine environment, and a third routine for following roots through objects associated with the virtual machine environment. The second module includes a fourth routine for initializing a heap in the virtual machine environment, a fifth routine for allocating an object in the virtual machine environment, and a sixth routine for performing the garbage collection process. In one embodiment, the second module also includes a seventh routine for implementing read and write barriers for the garbage collection process.
摘要翻译：公开了用于有效地使垃圾收集器被交换进出虚拟机环境的方法和装置。根据本发明的一个方面，一种用于在具有虚拟机的多线程虚拟机环境中回收存储器的接口包括与虚拟机相关联的第一模块和与第一模块分开的第二模块，与第一个模块接口。第一模块包括用于启动虚拟机环境内的垃圾收集过程的第一例程，用于扫描与虚拟机环境相关联的根的第二例程，以及用于通过与虚拟机环境相关联的对象跟随根的第三例程。第二模块包括用于在虚拟机环境中初始化堆的第四例程，用于在虚拟机环境中分配对象的第五例程，以及用于执行垃圾回收处理的第六例程。在一个实施例中，第二模块还包括用于实现垃圾收集过程的读取和写入障碍的第七例程。

9. 发明授权

US06886157B2 Method and apparatus for creating efficient native methods that extend a bytecode interpreter 有权
标题翻译：用于创建扩展字节码解释器的高效本机方法的方法和装置
公开(公告)号：US06886157B2
公开(公告)日：2005-04-26
申请号：US09865963
申请日：2001-05-25
申请人： Dean R. E. Long , Christopher J. Plummer , Nedim Fresko
发明人： Dean R. E. Long , Christopher J. Plummer , Nedim Fresko
IPC分类号： G06F9/40 , G06F9/42 , G06F9/455 , G06F9/45
CPC分类号： G06F8/76 , G06F9/449 , G06F9/45504
摘要： Methods, apparatus and computer program products are disclosed for a method of invoking a native method in a Java virtual machine (“JVM”). A special-purpose fast interface, executing in conjunction with an interpreter loop, for native methods reduces C stack recursion in the JVM. The interface performs as an extension to the interpreter loop component in the JVM in that a native method, invoked via the special-purpose interface, is able to modify the interpreter loop state if necessary. This is done without adding new bytecode instructions. A method of executing a native method in a Java virtual machine is described. The JVM first determines whether a native method is to be handled by a special native interface or one of multiple other native interfaces. If it is determined that the method is to be handled by the special native interface, the method is invoked and passed arguments enabling it to access the state of the JVM. The method is then executed. The state of the JVM is adjusted based on the execution of the method such that transition between the interpreter loop and the native method via the special native interface is minimized.
摘要翻译：公开了一种在Java虚拟机（“JVM”）中调用本地方法的方法，装置和计算机程序产品。与本地方法结合解释器循环执行的专用快速界面减少了JVM中的C堆栈递归。该界面作为JVM中解释器循环组件的扩展，因为通过专用接口调用的本地方法能够在需要时修改解释器循环状态。这样做不需要添加新的字节码指令。描述了在Java虚拟机中执行本机方法的方法。 JVM首先确定本机方法是由特殊本机接口还是多个其他本机接口之一来处理。如果确定该方法要由特殊本机接口处理，则调用该方法并传递参数以使其能够访问JVM的状态。然后执行该方法。基于方法的执行来调整JVM的状态，使得经由特殊本地接口的解释器循环和本地方法之间的转换被最小化。

10. 发明授权

US08943601B1 Method and apparatus for executing an application in a different application framework 有权
标题翻译：用于在不同应用框架中执行应用的方法和装置
公开(公告)号：US08943601B1
公开(公告)日：2015-01-27
申请号：US11408127
申请日：2006-04-20
申请人： Roman A. Zelov , Alexey S. Popov , Vladimir V. Sizikov , Nedim Fresko , Roger S. Riggs
发明人： Roman A. Zelov , Alexey S. Popov , Vladimir V. Sizikov , Nedim Fresko , Roger S. Riggs
IPC分类号： G06F7/04 , G06F21/10 , G11B20/00
CPC分类号： G06F21/10 , G06F21/6236 , G11B20/00086
摘要： One embodiment of the present invention provides a system that executes an application designed for one application framework in a different application framework. First, the system receives an application designed to operate in the first application framework. The system determines a first set of security permissions used by the application in the first application framework, and maps these security permissions into a second set of security permissions associated with the second application framework. The system then configures the second application framework to provide the second set of security permissions. These steps allow the application to execute transparently in the second application framework with substantially similar security behavior as in the first application framework.
摘要翻译：本发明的一个实施例提供一种在不同的应用框架中执行为一个应用框架设计的应用的系统。首先，系统接收设计为在第一应用框架中运行的应用程序。系统确定应用程序在第一个应用程序框架中使用的第一组安全权限，并将这些安全权限映射到与第二个应用程序框架相关联的第二组安全权限。然后系统配置第二个应用程序框架以提供第二组安全权限。这些步骤允许应用程序在第二应用程序框架中透明地执行与第一应用程序框架中具有基本相似的安全性行为。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式