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21. 发明授权

US09229743B2 Prevention of classloader memory leaks in multitier enterprise applications 有权
公开(公告)号：US09229743B2
公开(公告)日：2016-01-05
申请号：US13243508
申请日：2011-09-23
申请人： Vijay Sundaresan , Andres H. Voldman
发明人： Vijay Sundaresan , Andres H. Voldman
IPC分类号： G06F9/44 , G06F12/02 , G06F12/08 , G06F9/445
CPC分类号： G06F8/77 , G06F9/30047 , G06F9/44521 , G06F12/0253 , G06F12/0802
摘要： A classloader cache class definition is obtained by a processor. The classloader cache class definition includes code that creates a classloader object cache that is referenced by a strong internal reference by a classloader object in response to instantiation of the classloader cache class definition. A classloader object cache is instantiated using the obtained classloader cache class definition. The strong internal reference is created at instantiation of the classloader object cache. A public interface to the classloader object cache is provided. The public interface to the classloader object cache operates as a weak reference to the classloader object cache and provides external access to the classloader object cache.

22. 发明授权

US08689198B2 Compiling system and method for optimizing binary code 失效
标题翻译：用于优化二进制代码的编译系统和方法
公开(公告)号：US08689198B2
公开(公告)日：2014-04-01
申请号：US13206781
申请日：2011-08-10
申请人： Motohiro Kawahito , Ali I. Sheikh , Vijay Sundaresan
发明人： Motohiro Kawahito , Ali I. Sheikh , Vijay Sundaresan
IPC分类号： G06F9/45
CPC分类号： G06F8/443
摘要： A compiling system and method for optimizing binary code. The method includes the step of replacing a memory access on a stack area in order to save a value of a register with local variable access. The method further includes: giving a call number to a call instruction and an inlined code in response to an inline expansion of a code to be called by the call instruction; creating a parent-child relationship information for at least one of the call number; processing the memory accesses with an escaped stack pointer as a base address if a stack pointer has escaped; prohibiting a replacement of a prohibited memory access if the stack pointer has escaped; and replacing unprohibited memory access with the local variable access if the stack pointer has escaped.
摘要翻译：一种用于优化二进制代码的编译系统和方法。该方法包括在堆栈区域中替换存储器访问以便保存具有局部变量访问的寄存器的值的步骤。该方法还包括：响应于由呼叫指令调用的代码的内联扩展，向呼叫指令和内联代码发出呼叫号码; 为所述呼叫号码中的至少一个创建父 - 子关系信息; 如果堆栈指针已经转义，则使用转义的堆栈指针作为基地址处理存储器访问; 如果堆栈指针已经转义，则禁止替换禁止的内存访问; 并且如果堆栈指针已经转义，则使用局部变量访问替换非禁止的内存访问。

23. 发明申请

US20130243175A1 EFFICIENT INTERPRETER PROFILING TO OBTAIN ACCURATE CALL-PATH INFORMATION 有权
标题翻译：有效的解释器配置，以获得准确的呼叫路径信息
公开(公告)号：US20130243175A1
公开(公告)日：2013-09-19
申请号：US13420616
申请日：2012-03-15
申请人： Graham A. Chapman , James I. Gartley , Daniel J. Heidinga , Vijay Sundaresan
发明人： Graham A. Chapman , James I. Gartley , Daniel J. Heidinga , Vijay Sundaresan
IPC分类号： H04M3/42
CPC分类号： G06F8/443 , G06F9/4552 , G06F11/3466 , G06F2201/86 , G06F2201/865
摘要： A method for obtaining accurate call path information in a mixed-mode environment where interpreted methods and non-interpreted methods can call one another is disclosed. In one embodiment, such a method includes generating an event and recording it in a buffer when an interpreted method calls an interpreted method. The method also generates an event and records it in the buffer when an interpreted method calls a non-interpreted method. The method further generates an event and records it in the buffer when a non-interpreted method calls an interpreted method. The method refrains from generating an event when a non-interpreted method calls a non-interpreted method. A corresponding apparatus and computer program product are also disclosed.
摘要翻译：公开了一种用于在解释方法和非解释方法可以彼此呼叫的混合模式环境中获得准确的呼叫路径信息的方法。在一个实施例中，当解释方法调用解释方法时，这种方法包括生成事件并将其记录在缓冲器中。当解释方法调用非解释方法时，该方法还生成一个事件并将其记录在缓冲区中。当非解释方法调用解释方法时，该方法进一步生成事件并将其记录在缓冲器中。当非解释方法调用非解释方法时，该方法不会生成事件。还公开了相应的装置和计算机程序产品。

24. 发明申请

US20120042306A1 COMPILING SYSTEM AND METHOD FOR OPTIMIZING BINARY CODE 失效
标题翻译：用于优化二进制码的编译系统和方法
公开(公告)号：US20120042306A1
公开(公告)日：2012-02-16
申请号：US13206781
申请日：2011-08-10
申请人： Motohiro Kawahito , Ali I. Sheikh , Vijay Sundaresan
发明人： Motohiro Kawahito , Ali I. Sheikh , Vijay Sundaresan
IPC分类号： G06F9/45
CPC分类号： G06F8/443
摘要： A compiling system and method for optimizing binary code. The method includes the step of replacing a memory access on a stack area in order to save a value of a register with local variable access. The method further includes: giving a call number to a call instruction and an inlined code in response to an inline expansion of a code to be called by the call instruction; creating a parent-child relationship information for at least one of the call number; processing the memory accesses with an escaped stack pointer as a base address if a stack pointer has escaped; prohibiting a replacement of a prohibited memory access if the stack pointer has escaped; and replacing unprohibited memory access with the local variable access if the stack pointer has escaped.
摘要翻译：一种用于优化二进制代码的编译系统和方法。该方法包括在堆栈区域中替换存储器访问以便保存具有局部变量访问的寄存器的值的步骤。该方法还包括：响应于由呼叫指令调用的代码的内联扩展，向呼叫指令和内联代码发出呼叫号码; 为所述呼叫号码中的至少一个创建父 - 子关系信息; 如果堆栈指针已经转义，则使用转义的堆栈指针作为基地址处理存储器访问; 如果堆栈指针已经转义，则禁止替换禁止的内存访问; 并且如果堆栈指针已经转义，则使用局部变量访问替换非禁止的内存访问。

25. 发明授权

US07770163B2 Method of efficiently performing precise profiling in a multi-threaded dynamic compilation environment 失效
标题翻译：在多线程动态编译环境中有效执行精确剖析的方法
公开(公告)号：US07770163B2
公开(公告)日：2010-08-03
申请号：US11388607
申请日：2006-03-24
申请人： Kevin Alexander Stoodley , Vijay Sundaresan
发明人： Kevin Alexander Stoodley , Vijay Sundaresan
IPC分类号： G06F9/44 , G06F9/45
CPC分类号： G06F8/443
摘要： Synchronizing clones of a software method to be executed by at least one thread while the software method is compiled. The software method is cloned to generate a software method clone. At least one transition is created between equivalent program points in the software method and the software method clone. A lock object is inserted into one of the software method and the software method clone. Then, code that controls the at least one transition between a profiling clone and a non-profiling clone is changed to access thread-local storage. The non-profiling clone is the one of the software method and the software method clone into which the lock object was inserted. A first synchronization operation is performed at or after an entry point of the non-profiling clone. Then, the profiling clone is executed using thread-local storage.
摘要翻译：在软件方法被编译的同时，由至少一个线程执行的软件方法的克隆。克隆软件方法以生成软件方法克隆。在软件方法中的等效程序点和软件方法克隆之间至少创建一个转换。将锁定对象插入到软件方法和软件方法克隆之一中。然后，更改控制概要分析克隆和非概要分析克隆之间的至少一个转换的代码，以访问线程本地存储。非分析克隆是插入锁定对象的软件方法和软件方法克隆之一。在非分析克隆的入口点之前或之后执行第一同步操作。然后，使用线程本地存储执行概要分析克隆。

26. 发明授权

US07493610B1 Versioning optimization for dynamically-typed languages 失效
标题翻译：动态类型语言的版本控制优化
公开(公告)号：US07493610B1
公开(公告)日：2009-02-17
申请号：US12056726
申请日：2008-03-27
申请人： Tamiya Onodera , Vijay Sundaresan , Michiaki Tatsubori , Akihiko Tozawa
发明人： Tamiya Onodera , Vijay Sundaresan , Michiaki Tatsubori , Akihiko Tozawa
IPC分类号： G06F9/45 , G06F11/00
CPC分类号： G06F8/49 , G06F9/4484
摘要： A system and method for optimizing program code in dynamic languages includes gathering hot-type information from a program by employing inferencing or profiling to get the hot-type information for operator uses, and inserting guards in the program based on data flow in the program to guard against propagation failures during runtime where preconditions are violated or where the propagation is unlikely to return. The program is versioned into global versions including a hot path version and a cold path version, where the hot path version is expected to be executed if the values of variables in the code are expected types, and other exceptional cases are handled by the cold path version as triggered by the guards. Compiler optimizations are performed to remove redundant representations of values, and heavy overloading of operators to provide an optimized compiling of the code.
摘要翻译：用于以动态语言优化程序代码的系统和方法包括通过采用推理或分析来从程序收集热类型信息以获得用于操作者使用的热型信息，并且基于程序中的数据流将程序中的保护装置插入到程序中防止在违反前提条件的运行时间内传播失败或传播难以返回的传播故障。该程序被版本化为全球版本，包括热路径版本和冷路径版本，其中如果代码中的变量的值是预期类型，则希望执行热路径版本，并且其他异常情况由冷路径处理版本由警卫触发。执行编译器优化以消除值的冗余表示，以及操作员的大量重载以提供代码的优化编译。

27. 发明申请

US20060048116A1 Method, system and program product for implementing single threaded optimizations in a potentially multi-threaded environment 有权
标题翻译：用于在潜在的多线程环境中实现单线程优化的方法，系统和程序产品
公开(公告)号：US20060048116A1
公开(公告)日：2006-03-02
申请号：US10930032
申请日：2004-08-30
申请人： Derek Inglis , Trent Gray-Donald , Kevin Stoodley , Vijay Sundaresan
发明人： Derek Inglis , Trent Gray-Donald , Kevin Stoodley , Vijay Sundaresan
IPC分类号： G06F9/45
CPC分类号： G06F8/443
摘要： Under the present invention, program code is examined (statically or dynamically) for characteristics indicative of a potential to generate multiple threads. If none are found, single threaded optimization(s) such as desynchronization, optimization of globals, etc., can be implemented. In addition, if the program code is later revealed to have the potential to generate multiple threads, the single threaded optimization(s) can be corrected to avoid incorrect execution.
摘要翻译：在本发明的范围内，针对指示产生多个线程的潜力的特性，检查（静态地或动态地）程序代码。如果没有找到，则可以实现单线程优化，例如去同步，全局变量优化等。另外，如果稍后显示程序代码有可能生成多个线程，则可以纠正单线程优化以避免错误执行。

28. 发明授权

US08826256B2 Optimizing compiler performance by object collocation 有权
标题翻译：通过对象搭配优化编译器性能
公开(公告)号：US08826256B2
公开(公告)日：2014-09-02
申请号：US12858001
申请日：2010-08-17
申请人： Patrick Doyle , Pramod Ramarao , Vijay Sundaresan
发明人： Patrick Doyle , Pramod Ramarao , Vijay Sundaresan
IPC分类号： G06F9/45
CPC分类号： G06F8/443 , G06F8/4442
摘要： A computer-implemented method, system, and computer program product for performing object collocation on a computer system are provided. The method includes analyzing a sequence of computer instructions for object allocations and uses of the allocated objects. The method further includes creating an allocation interference graph of object allocation nodes with edges indicating pairs of allocations to be omitted from collocation. The method also includes coloring the allocation interference graph such that adjacent nodes are assigned different colors, and creating an object allocation at a program point prior to allocations of a selected color from the allocation interference graph. The method additionally includes storing an address associated with the created object allocation in a collocation pointer, and replacing a use of each allocation of the selected color with a use of the collocation pointer to collocate multiple objects.
摘要翻译：提供了一种用于在计算机系统上执行对象搭配的计算机实现的方法，系统和计算机程序产品。该方法包括分析用于对象分配的计算机指令序列和所分配的对象的使用。该方法还包括创建对象分配节点的分配干涉图，其边缘指示将从配置中省略的分配对。该方法还包括着色分配干涉图，使得相邻节点被分配不同的颜色，并且在从分配干涉图分配所选择的颜色之前在程序点创建对象分配。该方法还包括将与所创建的对象分配相关联的地址存储在并置指针中，并且通过使用并置指针来并置多个对象来替换所选颜色的每个分配的使用。

29. 发明授权

US08024720B2 Speculative inlining of overridden methods without using profiling information 失效
标题翻译：推测内联覆盖的方法，而不使用分析信息
公开(公告)号：US08024720B2
公开(公告)日：2011-09-20
申请号：US11405093
申请日：2006-04-17
申请人： Derek Bruce Inglis , Vijay Sundaresan , Dina Tal
发明人： Derek Bruce Inglis , Vijay Sundaresan , Dina Tal
IPC分类号： G06F9/45
CPC分类号： G06F8/443
摘要： A computer implemented method, computer usable program code, and a data processing system for selecting a candidate implementation of a virtual overridden method for inlining into a calling method. A determination as to which implementation of a virtual overridden method to inline is made based on its relative “hotness” compared to the other implementations of the same method. The relative hotness can be inferred from the invocation count and sampling count that the virtual machine and the just-in-time compiler already collect for other purposes, that is, without collecting and storing of call-edge profiling information. When a method is being compiled and it is identified that the method contains a call to an overridden method, a candidate for inlining from among the implementations of the overridden method is selected based on relative hotness values. The candidate implementation of the overridden method is then inlined, with a guard, into the calling method.
摘要翻译：计算机实现的方法，计算机可用程序代码和用于选择用于内联到调用方法的虚拟覆盖方法的候选实现的数据处理系统。基于相对于相同方法的其他实现方式的相对“热度”来确定虚拟覆盖的内联方法的实现。相对热度可以从虚拟机和即时编译器已经为其他目的收集的调用计数和抽样计数推断出来，即没有收集和存储调用边缘分析信息。当编译方法并且识别出该方法包含对重写方法的调用时，基于相对热度值来选择从覆盖方法的实现中进行内联的候选。然后，覆盖方法的候选实现被带入调用方法。

30. 发明授权

US07661098B2 Computer program optimization in a dynamic compilation environment 有权
标题翻译：动态编译环境中的计算机程序优化
公开(公告)号：US07661098B2
公开(公告)日：2010-02-09
申请号：US10845548
申请日：2004-05-13
申请人： Ali Ijaz Sheikh , Vijay Sundaresan
发明人： Ali Ijaz Sheikh , Vijay Sundaresan
IPC分类号： G06F9/45
CPC分类号： G06F9/45516 , G06F8/443
摘要： Dynamically compiled computer program code containing virtual calls can reduce the options for optimization during compilation. A virtual call can affect sections of the program code that are compiled subsequent to the virtual call. Therefore, the state under which the effected sections are to be executed may not be known at the time of compilation thus complicating optimization of these sections. If assumptions are made about the state of an effected section, then this section can be optimized. In order to provide proper operation of the executing program code given the optimization, a check of the validity of the assumptions is performed prior to execution of the optimized section. If an assumption does not hold true then the original un-optimized section can be executed to reduce adverse program performance.
摘要翻译：包含虚拟呼叫的动态编译的计算机程序代码可以减少编译期间优化的选项。虚拟呼叫可以影响在虚拟呼叫之后编译的程序代码的部分。因此，在编译时可能不知道要执行实施部分的状态，从而使这些部分的优化复杂化。如果对受影响部分的状态做出假设，则可以优化本部分。为了提供给出优化的执行程序代码的正确操作，在执行优化部分之前执行假设的有效性的检查。如果假设不成立，则可以执行原始未优化部分以减少不利的程序性能。

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