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    • 5. 发明申请
    • METHOD AND SYSTEM FOR USING A VIRTUALIZATION SYSTEM TO IDENTIFY DEADLOCK CONDITIONS IN MULTI-THREADED PROGRAMS BY CONTROLLING SCHEDULING IN REPLAY
    • 使用虚拟化系统通过控制重排调度来识别多线程程序中的死锁条件的方法和系统
    • US20120030657A1
    • 2012-02-02
    • US12848023
    • 2010-07-30
    • Qi GaoMin Xu
    • Qi GaoMin Xu
    • G06F9/44
    • G06F9/524G06F11/3636
    • A method and system for determining potential deadlock conditions in a target multi-threaded software application. The target application is first run in a virtual machine and the events within the application are recorded. The recorded events are replayed and analyzed to identify potential lock acquisition conflicts occurring between threads of the application. The potential lock acquisition conflicts are identified by analyzing the order in which resource locks are obtained and pairs of resources that have respective locks obtained in different orders are analyzed. These analyzed pairs are used to define a different order of events in the target application that, when the target application is re-run with the second order of events, may trigger a deadlock condition. The target application is then re-run with the different order of events in an attempt to trigger and then identify potential deadlock situations.
    • 一种用于确定目标多线程软件应用程序中潜在的死锁状况的方法和系统。 目标应用程序首先在虚拟机中运行,并记录应用程序中的事件。 记录的事件被重放和分析,以识别在应用程序的线程之间发生的潜在锁定获取冲突。 通过分析获得资源锁定的顺序来识别潜在锁获取冲突,并分析具有以不同顺序获得的相应锁的资源对。 这些分析的对用于定义目标应用程序中不同的事件顺序,当目标应用程序以二次事件重新运行时,可能会触发死锁条件。 然后,目标应用程序以不同的事件顺序重新运行,以尝试触发,然后识别潜在的死锁情况。
    • 8. 发明授权
    • Single display assembly having selective reflectors to view indicia
    • 具有选择性反射器以查看标记的单显示组件
    • US06132048A
    • 2000-10-17
    • US393282
    • 1999-09-10
    • Qi GaoStefan Peana
    • Qi GaoStefan Peana
    • G02F1/1335G03B21/28
    • G02F1/133553
    • A single display assembly (10) has an electronically controllable display (11) with a plurality of display elements (12) and sandwiched by two support plates (13,14), two polarizers (15,16) and two selective reflectors, namely a first selective reflector (17) and a second selective reflector (18). Support plates (13,14) and polarizers (15,16) are transparent media to permit passage of light. Selective reflectors (17,18) are holographic reflectors that are each pre-recorded with characteristics that includes a range (19 or 20) of predetermined incident angles relative to inward facing horizontal surfaces (24,25) and an angular transparency range (not shown) for passage of light. Assembly (10) has two opposite sides (21,22) to view indicia provided by display elements (12). Indicia can be selectively viewed from either of sides (21 or 22) without interference from external background of a remaining one of sides (21 or 22).
    • 单个显示组件(10)具有电子可控显示器(11),其具有多个显示元件(12),并被两个支撑板(13,14),两个偏振器(15,16)和两个选择性反射器 第一选择性反射器(17)和第二选择反射器(18)。 支撑板(13,14)和偏振器(15,16)是允许光通过的透明介质。 选择性反射器(17,18)是全息反射器,其每个预先记录有特征,其特征包括相对于向内的水平表面(24,25)和角度透明度范围(未示出)的预定入射角的范围(19或20) )通过光。 组件(10)具有两个相对的侧面(21,22),用于观察由显示元件(12)提供的标记。 可以从任何一个侧面(21或22)选择性地观察标记,而不会受到剩余侧面(21或22)的外部背景的干扰。