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公开(公告)号：US12164675B2
公开(公告)日：2024-12-10
申请号：US17734187
申请日：2022-05-02
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Nan Wang , Zipeng Zhang
Abstract: A capability management method and apparatus, a computer device, and the like relate to permission management of a kernel object in an operating system, for example, permission management of a kernel object in a microkernel architecture. In the method, two types of information are stored in a capability node of a capability owner: information used to indicate that a capability is granting and information used to indicate a granted capability. A capability association relationship between a grantor and a grantee is established by recording the two types of information, so that capability copying is avoided in a capability granting procedure, and capability deletion is avoided in a procedure of rejecting a capability by the grantee, thereby ensuring a deterministic latency while implementing capability revocation and granting. The method may be applied to a smartphone system, an unmanned driving system, or the like.
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公开(公告)号：US10387258B2
公开(公告)日：2019-08-20
申请号：US14828146
申请日：2015-08-17
Applicant: Huawei Technologies Co., Ltd.
Inventor： Nan Wang
Abstract: Embodiments of the present invention provide a method and an apparatus for processing redo data in a database, where the method includes: generating redo data according to a database modification operation, accordingly saving the redo data in a buffer allocated to each application thread, saving an identifier of the application thread in a time sequence queue after a time sequence queue lock is acquired; and determining that a data reading condition is satisfied, reading a sequence of the identifiers of the application threads from the time sequence queue, successively reading a piece of redo data from the buffer of each application thread corresponding to the identifier of each application thread in the time sequence queue, and writing the piece of redo data to a redo queue. Redo data processing efficiency can be improved by separating a time sequence queue from a data queue.
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3.发明授权公开(公告)号：US11874743B2
公开(公告)日：2024-01-16
申请号：US17866196
申请日：2022-07-15
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Xiameng Hu , Ning Jia , Yu Li , Nan Wang
CPC classification number: G06F11/1438 , G06F11/142 , G06F21/57
Abstract: A method for handling a trusted execution environment operating system crash is provided. The method includes: when it is detected, in a running process of a security service, that a TEE OS crashes, an electronic device stores a hardware status parameter of a TEE and a security context of an REE that are obtained when the TEE OS crashes, and suspends the security service; the electronic device restarts the TEE OS; the electronic device sets, based on the stored hardware status parameter of the TEE, a hardware status parameter of the TEE obtained after the TEE OS is restarted; the electronic device sets, based on the stored security context of the REE, a security context of the REE obtained after the TEE OS is restarted and a context of the TEE obtained after the TEE OS is restarted; and the electronic device restores the security service.
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公开(公告)号：US10412855B2
公开(公告)日：2019-09-10
申请号：US14974549
申请日：2015-12-18
Applicant: Huawei Technologies Co., Ltd.
Inventor： Wei Li , Zhao Zhang , Jie Chen , Nan Wang
IPC: H05K7/20
Abstract: An air deflection system includes a cabinet and an air deflection cabinet. The cabinet includes a cabinet first air vent on a lower part of a cabinet first side, a cabinet second air vent at a top of the cabinet, and a cabinet third air vent on a cabinet second side for cool air to enter. The air deflection cabinet includes an air deflection cabinet first air vent at a top of the air deflection cabinet and an air deflection cabinet second air vent on an air deflection cabinet first side that is proximate to the cabinet first side. The air deflection cabinet second air vent is in communication with the cabinet first air vent such that warm air exhausted through the cabinet first air vent enters the air deflection cabinet through the air deflection cabinet second air vent and is exhausted through the air deflection cabinet first air vent.
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Patent Agency Ranking
公开(公告)号：US20230168953A1
公开(公告)日：2023-06-01
申请号：US18160671
申请日：2023-01-27
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Nan Wang , Yifei Qi , Qingsong Yu , Ming Fu
CPC classification number: G06F9/544 , G06F3/064 , G06F3/0604 , G06F3/0673
Abstract: Example inter-process communication methods and apparatus are descried. One example method includes writing, based on a calling convention, communication information into a register group of a first execution entity of a sending process. First data of target data is written into a stack memory of the first execution entity. The communication information includes a first value indicating a data amount of the first data, and the target data is data to be sent by the sending process to a first receiving process. Information in the register group of the first execution entity is replicated to a context of the first execution entity. The first data from the stack memory of the first execution entity is replicated to a stack memory of a second execution entity of the first receiving process based on the first value in the context of the first execution entity and the address of the stack memory.
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公开(公告)号：US20200250302A1
公开(公告)日：2020-08-06
申请号：US16838935
申请日：2020-04-02
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Inventor： Haibo Chen , Nan Wang , Shanxi Chen , Miao Xie
Abstract: This application provides a security control method and a computer system. A first domain and a second domain are deployed in the computer system, the second domain is more secure than the first domain, a program is deployed in the first domain, and a control flow management module and an audit module are deployed in the second domain. The second domain is more secure than the first domain. When the program in the first domain is executed, the control flow management module obtains control flow information by using a tracer. The audit module audits the to-be-audited information according to an audit rule, and when the to-be-audited information matches the audit rule, determines that the audit succeeds and then allows the first domain to perform a subsequent operation, for example, to access a secure program in the second domain.
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公开(公告)号：US11687645B2
公开(公告)日：2023-06-27
申请号：US16838935
申请日：2020-04-02
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Haibo Chen , Nan Wang , Shanxi Chen , Miao Xie
CPC classification number: G06F21/54 , G06F21/74 , G06N20/00 , G06F7/582 , G06F7/588 , G06F16/245 , G06F21/577 , G06F2221/033 , G06F2221/2101 , G06Q50/265
Abstract: A security control method and a computer system are provided. A first domain and a second domain are deployed in the computer system, the second domain is more secure than the first domain, a program is deployed in the first domain, and a control flow management module and an audit module are deployed in the second domain. The second domain is more secure than the first domain. When the program in the first domain is executed, the control flow management module obtains control flow information by using a tracer. The audit module audits the to-be-audited information according to an audit rule, and when the to-be-audited information matches the audit rule, determines that the audit succeeds and then allows the first domain to perform a subsequent operation, for example, to access a secure program in the second domain.
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公开(公告)号：US20160105993A1
公开(公告)日：2016-04-14
申请号：US14974549
申请日：2015-12-18
Applicant: Huawei Technologies Co., Ltd.
Inventor： Wei Li , Zhao Zhang , Jie Chen , Nan Wang
IPC: H05K7/20
CPC classification number: H05K7/20127 , H05K7/20572
Abstract: An air deflection system includes a cabinet, where an air vent is disposed on a side of the cabinet, the air vent is located in a lower part of the side, an air vent is disposed at the top of the cabinet, and the cabinet is provided with a side for cool air to enter; and further includes at least one air deflection cabinet, where an air vent is disposed at the top of the air deflection cabinet, the air-vent-disposed side of the air deflection cabinet clings to the air-vent-disposed side of the cabinet, and the side air vent of the air deflection cabinet is in communication with the side air vent of the cabinet. By means of the air deflection system, bottom warm air is exhausted from the top, which improves efficiency of warm air processing of an equipment room.
Abstract translation: 空气偏转系统包括一个机壳，其中一个通风口设置在机柜的一侧，排气口位于侧面的下部，排气口设置在机柜的顶部，机柜是 设有一侧用于冷空气进入; 并且还包括至少一个空气偏转柜，其中空气排放口设置在空气偏转柜的顶部，空气偏转柜的排气侧设置在箱体的排气侧， 空气偏转柜的侧面通风口与机柜的侧面通风口连通。 借助于空气偏转系统，底部的暖空气从顶部排出，这提高了设备室的暖空气处理效率。
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公开(公告)号：US20150355975A1
公开(公告)日：2015-12-10
申请号：US14828146
申请日：2015-08-17
Applicant: Huawei Technologies Co., Ltd.
Inventor： Nan Wang
CPC classification number: G06F11/1435 , G06F11/1464 , G06F16/2343 , G06F16/2358 , G06F2201/80 , G06F2201/84
Abstract: Embodiments of the present invention provide a method and an apparatus for processing redo data in a database, where the method includes: generating redo data according to a database modification operation, accordingly saving the redo data in a buffer allocated to each application thread, saving an identifier of the application thread in a time sequence queue after a time sequence queue lock is acquired; and determining that a data reading condition is satisfied, reading a sequence of the identifiers of the application threads from the time sequence queue, successively reading a piece of redo data from the buffer of each application thread corresponding to the identifier of each application thread in the time sequence queue, and writing the piece of redo data to a redo queue. Redo data processing efficiency can be improved by separating a time sequence queue from a data queue.
Abstract translation: 本发明的实施例提供了一种用于处理数据库中的重做数据的方法和装置，其中该方法包括：根据数据库修改操作生成重做数据，从而将重做数据保存在分配给每个应用程序线程的缓冲器中，从而节省 获取时序队列锁之后的时间序列队列中的应用程序线程的标识符; 并且确定满足数据读取条件，从时间序列队列读取应用程序线程的标识符序列，从与每个应用程序线程的标识符相对应的每个应用程序线程的缓冲器连续读取一条重做数据 时间序列队列，并将重做数据写入重做队列。 可以通过将时间序列队列与数据队列分离来提高重做数据处理效率。
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