公开(公告)号：US08943502B2

公开(公告)日：2015-01-27

申请号：US12723719

申请日：2010-03-15

申请人： Bruce Mealey ,  James Bernard Moody

发明人： Bruce Mealey ,  James Bernard Moody

IPC分类号： G06F9/46 ,  G06F12/00 ,  G06F9/52

CPC分类号： G06F9/526 ,  G06F2209/523

摘要： A method, system, and computer usable program product for retooling lock interfaces for using a dual mode reader writer lock. An invocation of a method is received using an interface. The method is configured to operate on a lock associated with a resource in a data processing system. A determination is made whether the lock is an upgraded lock. The upgraded lock is the DML operating in an upgraded mode. An operation corresponding to the method is executed on the DML, if the lock is the upgraded lock.

摘要翻译： 一种用于重新组合使用双模式读写器锁的锁接口的方法，系统和计算机可用程序产品。 使用接口接收方法的调用。 该方法被配置为对与数据处理系统中的资源相关联的锁进行操作。 确定锁是否是升级锁。 升级后的锁是以升级模式运行的DML。 如果锁是升级锁，则在DML上执行与该方法相对应的操作。

公开(公告)号：US08347045B2

公开(公告)日：2013-01-01

申请号：US13302278

申请日：2011-11-22

申请人： Bruce Mealey ,  James Bernard Moody

发明人： Bruce Mealey ,  James Bernard Moody

IPC分类号： G06F12/14

CPC分类号： G06F9/526

摘要： A method, system, and computer usable program product for using a dual mode reader writer lock. A contention condition is detected in the use of a lock in a data processing system, the lock being used for managing read and write access to a resource in the data processing system. A determination of the data structure used for implementing the lock is made. If the data structure is a data structure of a reader writer lock (RWL), the data structure is transitioned to a second data structure suitable for implementing the DML. A determination is made whether the DML has been expanded. If the DML is not expanded, the DML is expanded such that the data structure includes an original lock and a set of expanded locks. The original lock and each expanded lock in the set of expanded locks forms an element of the DML.

摘要翻译： 一种使用双模式读写器锁的方法，系统和计算机可用程序产品。 在使用数据处理系统中的锁定时检测到竞争条件，该锁被用于管理对数据处理系统中的资源的读取和写入访问。 确定用于实现锁的数据结构。 如果数据结构是读写器锁（RWL）的数据结构，则数据结构被转换到适于实现DML的第二数据结构。 确定DML是否已经扩展。 如果DML未被扩展，则扩展DML，使得数据结构包括原始锁和一组扩展锁。 一组扩展锁中的原始锁和每个扩展锁形成DML的元素。

公开(公告)号：US08205118B2

公开(公告)日：2012-06-19

申请号：US12508098

申请日：2009-07-23

申请人： Michael E. Lyons ,  Bruce Mealey ,  Basu Vaidyanathan

发明人： Michael E. Lyons ,  Bruce Mealey ,  Basu Vaidyanathan

IPC分类号： G06F11/30

CPC分类号： G06F11/106

摘要： Software components “self-scrub” to improve software reliability, serviceability and availability (RAS). Each component designates a routine to perform a component level consistency check on major data structures and to verify the state of component. This is performed as an on-going task during the life of the component. The component registers an entry point with the system to receive notification of scrubbing parameter changes. The entry point is also called with the request to perform component-scrubbing operations. The entry point functions are responsible for executing within limitations on central processing unit (CPU) usage and memory footprint when performing scrubbing operations.

摘要翻译： 软件组件“自我磨擦”，以提高软件可靠性，可维护性和可用性（RAS）。 每个组件指定一个例程来执行主要数据结构的组件级一致性检查并验证组件的状态。 这是在组件生命周期中作为一项持续的任务执行的。 组件注册入口点，系统接收擦除参数更改的通知。 还要求进入组件擦除操作的请求。 入门点功能负责在执行洗涤操作时在中央处理单元（CPU）使用和内存占用的限制内执行。

公开(公告)号：US08166256B2

公开(公告)日：2012-04-24

申请号：US12723714

申请日：2010-03-15

申请人： Bruce Mealey ,  James Bernard Moody

发明人： Bruce Mealey ,  James Bernard Moody

IPC分类号： G06F12/16

CPC分类号： G06F9/526

摘要： A method, system, and computer usable program product for using a dual mode reader writer lock. A contention condition is detected in the use of a lock in a data processing system, the lock being used for managing read and write access to a resource in the data processing system. A determination of the data structure used for implementing the lock is made. If the data structure is a data structure of a reader writer lock (RWL), the data structure is transitioned to a second data structure suitable for implementing the DML. A determination is made whether the DML has been expanded. If the DML is not expanded, the DML is expanded such that the data structure includes an original lock and a set of expanded locks. The original lock and each expanded lock in the set of expanded locks forms an element of the DML.

摘要翻译： 一种使用双模式读写器锁的方法，系统和计算机可用程序产品。 在使用数据处理系统中的锁定时检测到竞争条件，该锁被用于管理对数据处理系统中的资源的读取和写入访问。 确定用于实现锁的数据结构。 如果数据结构是读写器锁（RWL）的数据结构，则数据结构被转换到适于实现DML的第二数据结构。 确定DML是否已经扩展。 如果DML未被扩展，则扩展DML，使得数据结构包括原始锁和一组扩展锁。 一组扩展锁中的原始锁和每个扩展锁形成DML的元素。

公开(公告)号：US20110225585A1

公开(公告)日：2011-09-15

申请号：US12723719

申请日：2010-03-15

申请人： Bruce Mealey ,  James Bernard Moody

发明人： Bruce Mealey ,  James Bernard Moody

IPC分类号： G06F9/46 ,  G06F12/00 ,  G06F15/16

CPC分类号： G06F9/526 ,  G06F2209/523

摘要： A method, system, and computer usable program product for retooling lock interfaces for using a dual mode reader writer lock. An invocation of a method is received using an interface. The method is configured to operate on a lock associated with a resource in a data processing system. A determination is made whether the lock is an upgraded lock. The upgraded lock is the DML operating in an upgraded mode. An operation corresponding to the method is executed on the DML, if the lock is the upgraded lock.

摘要翻译： 一种用于重新组合使用双模式读写器锁的锁接口的方法，系统和计算机可用程序产品。 使用接口接收方法的调用。 该方法被配置为对与数据处理系统中的资源相关联的锁进行操作。 确定锁是否是升级锁。 升级后的锁是以升级模式运行的DML。 如果锁是升级锁，则在DML上执行与该方法相对应的操作。

公开(公告)号：US07783920B2

公开(公告)日：2010-08-24

申请号：US11676546

申请日：2007-02-20

申请人： Michael G. Mall ,  Bruce Mealey

发明人： Michael G. Mall ,  Bruce Mealey

IPC分类号： G06F11/00

CPC分类号： G06F11/1482 ,  G06F11/0706 ,  G06F11/0793

摘要： A method, computer program product, and data processing system for providing optional exception recovery features in operating system kernel code are disclosed. In a preferred embodiment, a segment of mainline code may designate a recovery routine for that segment by calling a kernel service provided for that purpose. The kernel service pushes the address of the designated recovery routine, context, and re-entry point information corresponding to the segment to a recovery stack. An additional “footprint” region is also allocated on the recovery stack and used to store other state information needed for recovery. A mask value or barrier count value is also stored on the recovery stack to allow recovery to be disabled for non-recoverable routines.

摘要翻译： 公开了一种在操作系统内核代码中提供可选异常恢复功能的方法，计算机程序产品和数据处理系统。 在优选实施例中，主线代码段可以通过调用为此目的提供的内核服务来指定该段的恢复例程。 内核服务将对应于该段的指定的恢复例程，上下文和重入点信息的地址推送到恢复堆栈。 另外的“占用空间”区域也分配在恢复堆栈上，用于存储恢复所需的其他状态信息。 掩码值或屏障计数值也存储在恢复堆栈中，以允许对不可恢复例程进行恢复。

公开(公告)号：US20080168248A1

公开(公告)日：2008-07-10

申请号：US12054345

申请日：2008-03-24

申请人： THOMAS S. MATHEWS ,  BRUCE MEALEY ,  PRATAP CHANDRA PATTNAIK ,  RAVI A. SHANKAR

发明人： THOMAS S. MATHEWS ,  BRUCE MEALEY ,  PRATAP CHANDRA PATTNAIK ,  RAVI A. SHANKAR

IPC分类号： G06F12/00

CPC分类号： G06F12/1466

摘要： A method, system, and program key-controlled object-based memory protection are provided. A processing unit includes an authority check for controlling access by the processing unit to pages of memory according to whether a hardware protection key set currently loaded in an authority mask register allows access to the pages. In particular, each page of memory is assigned a page key number that indexes into the hardware protection key set. The currently loaded hardware protection key set specifies those page key numbers that are currently accessible to the processing unit for the execution context. Each hardware key within the hardware protection key set may be associated with a particular data object or group of data objects. Thus, effectively, the currently loaded hardware protection key set identifies which data objects or groups of data objects are currently accessible. Software keys are assigned to data objects and dynamically mapped to hardware protection key sets, such that when a module is called, the software keys assigned to that module are mapped to the hardware protection key set to be loaded for controlling current access to memory.

摘要翻译： 提供了一种方法，系统和程序按键控制的基于对象的存储器保护。 处理单元包括根据当前加载在权限掩码寄存器中的硬件保护密钥组是否允许访问页面的权限检查，用于控制由处理单元访问存储器页面的权限。 特别地，每个存储器页面被分配一个索引到硬件保护密钥集中的页面密钥号码。 当前加载的硬件保护密钥集指定处理单元当前可用于执行上下文的那些页面密钥号码。 硬件保护密钥组内的每个硬件密钥可以与特定数据对象或数据对象组相关联。 因此，有效地，当前加载的硬件保护密钥集识别当前可访问哪些数据对象或数据对象组。 将软键分配给数据对象并动态地映射到硬件保护密钥集，使得当调用模块时，分配给该模块的软件密钥被映射到要加载的硬件保护密钥集，以控制对存储器的当前访问。

公开(公告)号：US07023459B2

公开(公告)日：2006-04-04

申请号：US09798296

申请日：2001-03-01

申请人： Richard Louis Arndt ,  Robert Kimberlin Foster ,  Walter Manfred Lipp ,  Kerry Alan Lucas ,  Casey Lee McCreary ,  Bruce Mealey ,  Joshua Nathan Poimboeuf

发明人： Richard Louis Arndt ,  Robert Kimberlin Foster ,  Walter Manfred Lipp ,  Kerry Alan Lucas ,  Casey Lee McCreary ,  Bruce Mealey ,  Joshua Nathan Poimboeuf

IPC分类号： G09G5/00

CPC分类号： G06F9/5077

摘要： A method and system for providing a computer system having a plurality of logical partitions with a virtual terminal is disclosed. The computer system is coupled to an external display device through a single communications interface. The method and system include allowing the logical partitions to share the communications interface by multiplexing communications to the display device for each of the logical partitions over the communication interface. Windows are displayed on the display device for each of the logical partitions, and the communications from each of the logical partitions is then routed to the corresponding window for display on the display device.

公开(公告)号：US20060053267A1

公开(公告)日：2006-03-09

申请号：US10920910

申请日：2004-08-18

申请人： Christopher McDonald ,  Bruce Mealey ,  Mark Rogers

发明人： Christopher McDonald ,  Bruce Mealey ,  Mark Rogers

IPC分类号： G06F12/10

CPC分类号： G06F12/1072 ,  G06F12/1036 ,  G06F12/109 ,  G06F2212/682

摘要： Scaling address space utilization in a multi-threaded, multi-processor computer, including attaching to process memory of an exporting process a region of virtual memory specified in a cross-memory descriptor; requesting, by an importing thread of an importing process having process memory, a lightweight attachment of the region of virtual memory to the process memory of the importing process for exclusive use by the importing thread; and lightweight attaching, by an operating system to the process memory of the importing process, the region of virtual memory for exclusive use by the importing thread.

公开(公告)号：US20060036823A1

公开(公告)日：2006-02-16

申请号：US10916981

申请日：2004-08-12

申请人： Thomas Mathews ,  Bruce Mealey ,  Pratap Pattnaik ,  Ravi Shankar

发明人： Thomas Mathews ,  Bruce Mealey ,  Pratap Pattnaik ,  Ravi Shankar

IPC分类号： G06F12/14 ,  G06F12/10

CPC分类号： G06F12/1466

摘要： A method, system, and program key-controlled object-based memory protection are provided. A processing unit includes an authority check for controlling access by the processing unit to pages of memory according to whether a hardware protection key set currently loaded in an authority mask register allows access to the pages. In particular, each page of memory is assigned a page key number that indexes into the hardware protection key set. The currently loaded hardware protection key set specifies those page key numbers that are currently accessible to the processing unit for the execution context. Each hardware key within the hardware protection key set may be associated with a particular data object or group of data objects. Thus, effectively, the currently loaded hardware protection key set identifies which data objects or groups of data objects are currently accessible. Software keys are assigned to data objects and dynamically mapped to hardware protection key sets, such that when a module is called, the software keys assigned to that module are mapped to the hardware protection key set to be loaded for controlling current access to memory.

摘要翻译： 提供了一种方法，系统和程序按键控制的基于对象的存储器保护。 处理单元包括根据当前加载在权限掩码寄存器中的硬件保护密钥组是否允许访问页面的权限检查，用于控制由处理单元访问存储器页面的权限。 特别地，每个存储器页面被分配一个索引到硬件保护密钥集中的页面密钥号码。 当前加载的硬件保护密钥集指定处理单元当前可用于执行上下文的那些页面密钥号码。 硬件保护密钥组内的每个硬件密钥可以与特定数据对象或数据对象组相关联。 因此，有效地，当前加载的硬件保护密钥集识别当前可访问哪些数据对象或数据对象组。 软件密钥被分配给数据对象并动态映射到硬件保护密钥集，使得当调用模块时，分配给该模块的软件密钥被映射到要加载的硬件保护密钥集，以控制对存储器的当前访问。