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1. 发明授权

US07065743B2 Apparatus and method for caching analyzed program information 有权
标题翻译：用于缓存分析的程序信息的装置和方法
公开(公告)号：US07065743B2
公开(公告)日：2006-06-20
申请号：US10193581
申请日：2002-07-11
申请人： Marc Noel Blais , Daniel Rodman Hicks , James Albert Kryka
发明人： Marc Noel Blais , Daniel Rodman Hicks , James Albert Kryka
IPC分类号： G06F9/44
CPC分类号： G06F9/445
摘要： An apparatus and method provide a cache for analyzed program information when no class file can be identified. When loading a class, if there is an identifiable class file for the class, the class file is checked to determine if analyzed program information is attached. If so, the analyzed program information can be directly used without the overhead of analyzing the program information again. If there is no identifiable class file for the class, a cache is checked to see if there is an entry in the cache corresponding to the class. If there is no entry in the cache corresponding to the class, the program information is analyzed and saved in a cache entry for future use. If there is an entry in the cache corresponding to the class, the analyzed program information is retrieved and used, thereby saving the time required to repeatedly analyze the program information.
摘要翻译：当不能识别类文件时，装置和方法提供用于分析的程序信息的缓存。加载类时，如果有类可识别的类文件，则检查类文件以确定是否附加了分析的程序信息。如果是这样，可以直接使用所分析的节目信息，而不会再次分析节目信息的开销。如果该类没有可识别的类文件，则会检查缓存以查看缓存中是否存在与该类对应的条目。如果与该类对应的缓存中没有条目，则将程序信息分析并保存在高速缓存条目中以供将来使用。如果存在与该类别相对应的缓存中的条目，则检索和使用所分析的节目信息，从而节省重复分析节目信息所需的时间。

2. 发明授权

US06654954B1 Computer system, program product and method utilizing executable file with alternate program code attached as a file attribute 失效
标题翻译：计算机系统，程序产品和方法利用作为文件属性附加的备用程序代码的可执行文件
公开(公告)号：US06654954B1
公开(公告)日：2003-11-25
申请号：US09024111
申请日：1998-02-17
申请人： Daniel Rodman Hicks
发明人： Daniel Rodman Hicks
IPC分类号： G06F945
CPC分类号： G06F9/45516 , Y10S707/99953 , Y10S707/99954
摘要： A computer system, program product, and method utilize alternate program code associated with an executable file using a file attribute so that the alternate program code may be retrieved and executed in lieu of the primary program code stored in the file. As one example, for a platform-independent executable file such as a Java class file, a file attribute of the file may be analyzed to determine if native program code for a particular platform is associated with the file. If so, the native program code may be retrieved and executed directly without the additional overhead associated with interpreting the platform-independent program code in the file. If, on the other hand, the native program code is not detected, the native program code may be generated and associated with the file using a file attribute such that the native program code is detected in subsequent attempts to retrieve and execute the file.
摘要翻译：计算机系统，程序产品和方法利用与可执行文件相关联的替代程序代码，使用文件属性，以便代替存储在文件中的主程序代码来检索和执行替代程序代码。作为一个示例，对于诸如Java类文件的与平台无关的可执行文件，可以分析文件的文件属性，以确定特定平台的本地程序代码是否与该文件相关联。如果是这样，可以直接检索和执行本地程序代码，而不需要与解释文件中与平台无关的程序代码相关联的附加开销。另一方面，如果未检测到本地程序代码，则可以使用文件属性生成本地程序代码并与文件相关联，使得在随后的检索和执行该文件的尝试中检测到本机程序代码。

3. 发明授权

US6090155A Optimizing apparatus and method for defining visibility boundaries in compiled code 失效
标题翻译：用于定义编译代码中的可见性边界的优化设备和方法
公开(公告)号：US6090155A
公开(公告)日：2000-07-18
申请号：US461943
申请日：1995-06-05
申请人： Robert John Donovan , Daniel Rodman Hicks , James Albert Kryka , David John Lambert , Robert Ralph Roediger
发明人： Robert John Donovan , Daniel Rodman Hicks , James Albert Kryka , David John Lambert , Robert Ralph Roediger
IPC分类号： G06F9/45
CPC分类号： G06F8/443
摘要： Apparatus and a method are provided for defining visibility boundaries in compiled code of an optimizing compiler used with a digital computer for converting a source program to an object code. The source program is received and a first intermediate representation of the source program is generated. A pseudo operation representing a predetermined event is inserted in the first intermediate representation. Sequential operations of the first intermediate representation including the inserted pseudo operations are processed for defining an internal data structure of the source program. A visibility boundary for a selected variable is identified responsive to identifying a pseudo operation in the first intermediate representation.
摘要翻译：提供了一种设备和方法，用于定义与用于将源程序转换为目标代码的数字计算机一起使用的优化编译器的编译代码中的可见性边界。源程序被接收，并且生成源程序的第一中间表示。在第一中间表示中插入表示预定事件的伪操作。处理包括插入的伪操作的第一中间表示的顺序操作用于定义源程序的内部数据结构。响应于在第一中间表示中识别伪操作来识别所选变量的可见性边界。

4. 发明授权

US07058943B2 Object oriented apparatus and method for allocating objects on an invocation stack in a partial compilation environment 失效
公开(公告)号：US07058943B2
公开(公告)日：2006-06-06
申请号：US09865001
申请日：2001-05-24
申请人： Marc Noel Blais , Daniel Rodman Hicks , William Jon Schmidt
发明人： Marc Noel Blais , Daniel Rodman Hicks , William Jon Schmidt
IPC分类号： G06F9/45 , G06F9/46
CPC分类号： G06F9/449
摘要： An object oriented mechanism and method allow allocating Java objects on a method's invocation stack in a partial compilation environment under certain conditions. Only the classes that are visible are taken into account when performing escape analysis in accordance with the preferred embodiments. In a first aspect of the invention, conservative assumptions are made to assure that objects are only allocated on an invocation stack when this can be proven safe by examining only those classes in the compilation unit. In a second aspect of the invention, the concept of visible classes is extended to include other classes that may be found from a user-defined classpath that matches the anticipated run-time classpath used to find classes during program execution. When stack allocation decisions for a method depends on such classes that are outside the compilation unit, two versions of run time code for that method are created. One version allocates all objects from the heap, whereas the other allocates some or all objects on the invocation stack. For each class outside the compilation unit that was examined when making stack allocation decisions for a method, information about the requisite class is stored with the method. At run time, the class loader verifies that the run time version of each requisite class matches all stored information about that class. If all information matches for all requisite classes, the version of the method using stack allocation is safe to use at run time. Otherwise, the method using heap allocation must be used.

5. 发明授权

US06330714B1 Method and computer program product for implementing redundant lock avoidance 失效
标题翻译：实现冗余锁避免的方法和计算机程序产品
公开(公告)号：US06330714B1
公开(公告)日：2001-12-11
申请号：US09246227
申请日：1999-02-08
申请人： Daniel Rodman Hicks , John Matthew Santosuosso
发明人： Daniel Rodman Hicks , John Matthew Santosuosso
IPC分类号： G06F945
CPC分类号： G06F9/524 , G06F9/449 , Y10S707/99938
摘要： A method and computer program product are provided for implementing redundant lock avoidance in a virtual call sequence in a computer-system. A first copy of each target method with synchronization enabled and a second copy of each the target method without synchronization enabled are provided. For each virtual call to an object in the virtual call sequence, reaching definition analysis for an object pointer to the object is performed. For each reaching definition of the pointer, it is determined whether each reaching definition represents a pointer to an object known to be locked. Responsive to identifying the pointer to the object not known to be locked, the first copy of the synchronized method with synchronization enabled is selected. Responsive to identifying the pointer to the object known to be locked, the second copy of the synchronized method without synchronization enabled is selected.
摘要翻译：提供了一种用于在计算机系统中的虚拟呼叫序列中实现冗余锁定避免的方法和计算机程序产品。提供了启用同步的每个目标方法的第一个副本，并且提供了每个目标方法的第二个副本，而不启用同步。对于在虚拟调用序列中的对象的每个虚拟调用，执行到对象的对象指针的定义分析。对于指针的每个到达定义，确定每个到达定义是否表示指向已知被锁定的对象的指针。响应于识别不知道被锁定的对象的指针，选择同步启用的同步方法的第一副本。响应于识别到已知被锁定的对象的指针，选择不启用同步的同步方法的第二副本。

6. 发明授权

US06810519B1 Achieving tight binding for dynamically loaded software modules via intermodule copying 失效
标题翻译：通过模块间复制实现动态加载的软件模块的紧密绑定
公开(公告)号：US06810519B1
公开(公告)日：2004-10-26
申请号：US09675620
申请日：2000-09-29
申请人： Daniel Rodman Hicks
发明人： Daniel Rodman Hicks
IPC分类号： G06F944
CPC分类号： G06F8/71 , G06F9/44521 , G06F9/44552 , G06F9/45504
摘要： A computer system, a computer product and a method in which static storage within an environment comprising a plurality of compilation modules is managed such that compiled cloned copies of called externally resolved (with respect to a compilation unit) items are preferentially executed in favor of the corresponding externally resolved item based on a favorable comparison of version information of version information prior to execution. In one embodiment, JAVA® programming language methods are processed within the context a modified framework.
摘要翻译：计算机系统，计算机产品和方法，其中管理包括多个编译模块的环境内的静态存储，从而优先执行被称为外部解决的（编译单元）项的编译的克隆副本，以有利于基于在执行之前对版本信息的版本信息的有利比较的相应的外部解决的项目。在一个实施例中，JAVA（R）编程语言方法在上下文中被处理为修改的框架。

7. 发明授权

US06516330B1 Counting set bits in data words 失效
标题翻译：在数据字中计数设置位
公开(公告)号：US06516330B1
公开(公告)日：2003-02-04
申请号：US09452681
申请日：1999-12-01
申请人： Daniel Rodman Hicks , Andrew Johnson
发明人： Daniel Rodman Hicks , Andrew Johnson
IPC分类号： G06F700
CPC分类号： G06F7/607
摘要： Counting the number of set bits in an n-bit data word in a data processing system. The process involves generating at least p1 intermediate n-bit words, where 1
摘要翻译：计算数据处理系统中n位数据字中的设置位数。该过程包括通过掩蔽和移位数据字使得每个中间字具有n / p1p1位字段，并且中间字的字段中的n表示“1”，生成至少p1个中间n位字，其中1

8. 发明授权

US6047295A Computer system, program product and method of managing weak references with a concurrent mark sweep collector 失效
标题翻译：计算机系统，程序产品和使用并发标记扫描收集器管理弱引用的方法
公开(公告)号：US6047295A
公开(公告)日：2000-04-04
申请号：US72847
申请日：1998-05-05
申请人： John Clarence Endicott , Daniel Rodman Hicks , Elliot Karl Kolodner , Robert Carl Seemann
发明人： John Clarence Endicott , Daniel Rodman Hicks , Elliot Karl Kolodner , Robert Carl Seemann
IPC分类号： G06F12/02 , G06F17/30
CPC分类号： G06F12/0269 , Y10S707/99938 , Y10S707/99953 , Y10S707/99957
摘要： A computer system, program product, and method of managing weak references with a concurrent mark sweep collector inhibit access, while processing weak references, to only those weak references whose referenced objects have not yet been determined to be strongly-reachable (i.e., reachable other than through a weak reference) during a current collection cycle. As such, access to specific weak references during processing thereof by a concurrent mark sweep collector is selectively inhibited to ensure synchronization for all weak references without necessarily stopping the execution of all program threads that attempt to access such weak references while executing in a computer system, thereby minimizing the processing overhead of managing weak references and improving system performance.
摘要翻译：使用并发标记扫描收集器管理弱引用的计算机系统，程序产品和方法在仅处理弱引用的同时禁止访问仅引用对象尚未被确定为强可访问的那些弱引用（即可达到的其他比通过弱参考）在当前收集周期。因此，选择性地禁止在并行标记扫描收集器的处理期间访问特定弱引用，以确保所有弱引用的同步，而不必停止执行在计算机系统中执行时试图访问这种弱引用的所有程序线程的执行，从而最小化管理弱引用的处理开销并提高系统性能。

9. 发明授权

US07100154B2 Dynamic compiler apparatus and method that stores and uses persistent execution statistics 有权
标题翻译：动态编译器和存储和使用持久性执行统计信息的方法
公开(公告)号：US07100154B2
公开(公告)日：2006-08-29
申请号：US10345916
申请日：2003-01-16
申请人： Daniel Rodman Hicks
发明人： Daniel Rodman Hicks
IPC分类号： G06F9/45 , G06F9/44
CPC分类号： G06F9/45516
摘要： Dynamic compilation logic collects execution statistics into a persistent store as a computer program is executed so the execution statistics may be used by the dynamic compilation logic in subsequent executions of the computer program. By saving execution statistics in a persistent store, the dynamic compilation logic can use the execution statistics from previous executions to know which portions of the computer program to immediately compile when the execution of the computer program begins, and how to best compile and optimize certain portions of the computer program. In the preferred embodiments, the persistent store is an attachment to an object oriented class file.
摘要翻译：动态编译逻辑在执行计算机程序时将执行统计信息收集到持久存储器中，以便在计算机程序的后续执行中可以由动态编译逻辑使用执行统计信息。通过将执行统计信息保存在持久存储器中，动态编译逻辑可以使用先前执行的执行统计信息来知道计算机程序的哪些部分在计算机程序的执行开始时立即编译，以及如何最佳地编译和优化某些部分的计算机程序。在优选实施例中，持久存储是对面向对象的类文件的附件。

10. 发明授权

US06175956B1 Method and computer program product for implementing method calls in a computer system 失效
标题翻译：用于在计算机系统中实现方法调用的方法和计算机程序产品
公开(公告)号：US06175956B1
公开(公告)日：2001-01-16
申请号：US09115717
申请日：1998-07-15
申请人： Daniel Rodman Hicks , William Jon Schmidt
发明人： Daniel Rodman Hicks , William Jon Schmidt
IPC分类号： G06F945
CPC分类号： G06F8/443 , G06F9/4491
摘要： A computer implemented method and computer program compiler product are provided for implementing method calls in a computer system. Virtual method calls are identified in an intermediate instruction stream representation. Responsive to an identified virtual method call, profile data for the identified call site are read. A most frequently called procedure for the identified call site is compared with a first threshold value. Responsive to the most frequently called procedure being called less than the first threshold value, the virtual method call is maintained in a revised instruction stream representation. Responsive to the most frequently called procedure being called greater than or equal to the first threshold value, a guarded call to the most frequently called procedure is inserted at the identified call site in the revised instruction stream representation. In accordance with features of the invention, checking whether one object type accounts for more than a second threshold value of the calls to the most frequently called procedure at the identified call site is performed. Responsive to one object type accounting for more than or equal to the second threshold value, a type guard and a call to the most frequently called procedure are inserted at the identified call site in the revised instruction stream representation. Responsive to one object type accounting for less than the second threshold value, an address guard and a call to the most frequently called procedure are inserted at the identified call site in the revised instruction stream representation.
摘要翻译：提供了一种计算机实现的方法和计算机程序编译器产品，用于在计算机系统中实现方法调用。虚拟方法调用在中间指令流表示中被识别。响应于识别的虚拟方法调用，读取所识别的呼叫站点的简档数据。将所识别的呼叫站点的最常被称为过程与第一阈值进行比较。响应于被称为小于第一阈值的最常被称为过程的虚拟方法调用被维持在修改的指令流表示中。响应于被称为大于或等于第一阈值的最常被称为过程的被调用的程序被插入到经修改的指令流表示中的所识别的呼叫站点处。根据本发明的特征，执行一个对象类型是否占用在所识别的呼叫站点上对最常被叫过程的呼叫的第二阈值的多于一个的第二阈值。响应于占用大于或等于第二阈值的一个对象类型，在修改的指令流表示中的所识别的呼叫站点插入类型保护和对最常被调用的过程的呼叫。响应于占用小于第二阈值的一个对象类型，在修改的指令流表示中的所识别的呼叫站点插入地址保护和对最常被叫过程的呼叫。

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