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1. 发明申请

US20100229165A1 CONTROLLING JAVA VIRTUAL MACHINE COMPONENT BEHAVIOR ON A PER-CLASSLOADER BASIS 失效
标题翻译：控制JAVA虚拟机组件行为在每个分类器基础上
公开(公告)号：US20100229165A1
公开(公告)日：2010-09-09
申请号：US12399184
申请日：2009-03-06
申请人： Glyn Normington , Ian Oliver Partridge , Brian David Peacock
发明人： Glyn Normington , Ian Oliver Partridge , Brian David Peacock
IPC分类号： G06F9/44
CPC分类号： G06F9/445
摘要： A method and system for controlling an operation of a JVM® component on a per-classloader basis. A manifest of a bundle in an OSGi® compliant framework is parsed and metadata in the manifest is identified. The metadata is stored in a Java® classloader uniquely associated with the bundle. An upcoming performance of an operation which can be affected by a value of the stored metadata is identified by the JVM® component. A value of the stored metadata is read from the classloader. The operation of the JVM® component is controlled based on the value of the stored metadata.
摘要翻译：一种用于在每个类加载器的基础上控制JVM®组件的操作的方法和系统。解析OSGi®兼容框架中的bundle的清单，并识别清单中的元数据。元数据存储在与捆绑包唯一相关联的Java®类加载器中。可以由存储的元数据的值影响的操作的即将到来的性能由JVM®组件识别。从类加载器读取存储的元数据的值。基于存储的元数据的值控制JVM®组件的操作。

2. 发明授权

US08375377B2 Controlling java virtual machine component behavior on a per-classloader basis 失效
标题翻译：在每个类加载器的基础上控制java虚拟机组件行为
公开(公告)号：US08375377B2
公开(公告)日：2013-02-12
申请号：US12399184
申请日：2009-03-06
申请人： Glyn Normington , Ian Oliver Partridge , Brian David Peacock
发明人： Glyn Normington , Ian Oliver Partridge , Brian David Peacock
IPC分类号： G06F9/44
CPC分类号： G06F9/445
摘要： A method and system for controlling an operation of a Java Virtual Machine (JVM) component on a per-classloader basis. A manifest of a bundle in an Open Services Gateway Initiative (OSGi®) compliant framework is parsed and metadata in the manifest is identified. The metadata is stored in a Java® classloader uniquely associated with the bundle. An upcoming performance of an operation which can be affected by a value of the stored metadata is identified by the JVM component. A value of the stored metadata is read from the classloader. The operation of the JVM component is controlled based on the value of the stored metadata.
摘要翻译：用于基于每个类加载器来控制Java虚拟机（JVM）组件的操作的方法和系统。在开放式服务网关计划（OSGi®）兼容框架中的捆绑清单被解析，并且识别清单中的元数据。元数据存储在与捆绑包唯一相关联的Java®类加载器中。可以受到存储元数据值影响的操作的即将到来的性能由JVM组件标识。从类加载器读取存储的元数据的值。基于存储的元数据的值来控制JVM组件的操作。

3. 发明授权

US06983461B2 Method and system for deadlock detection and avoidance 失效
公开(公告)号：US06983461B2
公开(公告)日：2006-01-03
申请号：US10068337
申请日：2002-02-07
申请人： Gordon Douglas Hutchison , Brian David Peacock
发明人： Gordon Douglas Hutchison , Brian David Peacock
IPC分类号： G06F9/46
CPC分类号： G06F9/524 , Y10S707/99938
摘要： The invention relates to a method of operating a computer system supporting multiple processes, and the intention is to avoid deadlock (an example of which is where process A owns resource A, and is waiting on resource B, but resource B is currently owned by process B, which is waiting on resource A). The method commences with receipt of a request from a first process for access to a resource of said computer system. If the requested resource is currently unavailable because it is currently owned by another process, the system examines which processes own or are waiting for other resources on the system, in order to try to detect whether adding the first process to a queue for the requested resource would cause a deadlock situation to arise. If so, the system will typically throw an exception, or possibly return an error to the request for the resource.

4. 发明授权

US06792601B1 Multiple mode object locking method and system 失效
标题翻译：多模式对象锁定方法和系统
公开(公告)号：US06792601B1
公开(公告)日：2004-09-14
申请号：US09574137
申请日：2000-05-18
申请人： Robert Tod Dimpsey , Benjamin Joseph Hoflich , Brian David Peacock
发明人： Robert Tod Dimpsey , Benjamin Joseph Hoflich , Brian David Peacock
IPC分类号： G06E9455
CPC分类号： G06F9/52 , G06F9/449 , G06F12/0269
摘要： An object-based multi-threaded computing system has a cyclic garbage collection strategy and includes an object locking system having (i) a first mode in which access by a single thread without contention to an object is controlled by a monitor internal to said object, and (ii) a second mode in which access by multiple threads with contention to said object is controlled by a monitor external to said object. For any given object a transition from the first mode to the second mode is termed inflation, and a transition from the second mode to the first mode is termed deflation. Responsive to the start of a period of contention for an object in said first mode, the object is inflated to the second mode, and an inflation rate counter is incremented. After the period of contention has concluded the value of the inflation rate counter is compared against a predetermined value in order to determine whether or not to deflate the object. The inflation rate counter is reset at every garbage collection cycle.
摘要翻译：基于对象的多线程计算系统具有循环垃圾回收策略，并且包括对象锁定系统，该对象锁定系统具有（i）第一模式，其中单个线程的访问不与对象的争用由所述对象内部的监视器控制，以及（ii）第二模式，其中具有与所述对象争用的多个线程的访问由所述对象外部的监视器控制。对于任何给定的对象，从第一模式到第二模式的转换称为充气，并且从第二模式向第一模式的转变称为放气。响应于在所述第一模式中对象的竞争期间的开始，对象被充气到第二模式，并且增加充气率计数器。在争用期结束之后，将通货膨胀率计数器的值与预定值进行比较，以确定是否放气物品。通货膨胀率计数器在每个垃圾回收周期重置。

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