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公开(公告)号：US10430577B2
公开(公告)日：2019-10-01
申请号：US14576692
申请日：2014-12-19
Applicant: Apple Inc.
Inventor： James Michael Magee , Russell A. Blaine , Vishal Patel , Daniel Andreas Steffen , Kevin James Van Vechten , Jacques Anthony Vidrine , Kelly B. Yancey , Jainam A. Shah
Abstract: A method and an apparatus to dynamically distribute privileges among a plurality of processes are described. Each process may have attributes including a privilege to control access to processing resources. A first process may be running with a first privilege prohibited from access to a processing resource. A second process may be running with a second privilege allowed to access the processing resource. The first process may receive a request from the second process to perform a data processing task for the second process. In response, the second privilege may be dynamically transferred to the first process to allow the first process to access the processing resource. The first process may perform operations for the data processing task with the second privilege transferred from the second process.
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公开(公告)号：US20150347178A1
公开(公告)日：2015-12-03
申请号：US14576963
申请日：2014-12-19
Applicant: Apple Inc.
Inventor： James Michael Magee , Russell A. Blaine , Daniel Allen Chimene , Vishal Patel , Shantonu Sen
IPC: G06F9/48
CPC classification number: G06F9/4881 , G06F1/3206 , G06F1/3287 , G06F9/461 , G06F9/468 , G06F9/4818 , G06F9/50 , G06F9/52 , G06F9/545 , G06F2209/484 , G06F2209/485 , Y02D10/171 , Y02D10/24
Abstract: A method and an apparatus for activity based execution scheduling are described. Activities may be tracked among a plurality of threads belonging to a plurality of processes running in one or more processors. Each thread may be associated with one of the activities. Each activity may be associated with one or more of the threads in one or more of the processes for a data processing task. The activities may be ordered by a priority order. A group of the threads may be identified to be associated with a particular one of the activities with highest priority based on the priority order. A thread may be selected from the identified threads for next scheduled execution in the processors.
Abstract translation: 描述了一种用于基于活动的执行调度的方法和装置。 可以在属于在一个或多个处理器中运行的多个进程的多个线程中跟踪活动。 每个线程可能与其中一个活动相关联。 每个活动可以与用于数据处理任务的一个或多个处理中的一个或多个线程相关联。 活动可按优先顺序排序。 一组线程可以被识别为基于优先级顺序与具有最高优先级的特定活动相关联。 可以从所识别的线程中选择线程以用于处理器中的下一个预定执行。
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公开(公告)号：US20130332941A1
公开(公告)日：2013-12-12
申请号：US13656506
申请日：2012-10-19
Applicant: APPLE INC.
Inventor： Ananthakrishna Ramesh , Yosen Lin , Damien Pascal Sorresso , James Michael Magee , Kevin James Van Vechten , Umesh Suresh Vaishampayan
CPC classification number: G06F9/4843 , G06F9/4831
Abstract: A method and apparatus of a device that changes the importance of a daemon process is described. In an exemplary embodiment, the device receives a message from a user process destined for daemon process, wherein the daemon process executes independently of the user process and the first daemon process communicates messages with other executing processes. The device further determines if the first message indicates that the importance of the first daemon process can be changed. If the first message indicates the importance of the first daemon process can be changed, the device changes the importance of the first daemon process. The device additionally forwards the first message to the first daemon process.
Abstract translation: 描述了改变守护进程的重要性的装置的方法和装置。 在示例性实施例中，设备从目的地为守护进程的用户进程接收消息，其中守护进程独立于用户进程执行，并且第一守护进程与其他执行进程通信消息。 设备还确定第一消息是否指示可以改变第一后台进程的重要性。 如果第一条消息表明第一个守护进程的重要性可以改变，则设备会改变第一个守护进程的重要性。 该设备另外将第一个消息转发到第一个守护进程。
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公开(公告)号：US11513874B2
公开(公告)日：2022-11-29
申请号：US16948787
申请日：2020-10-01
Applicant: Apple Inc.
Inventor： Matthew G. Watson , James Michael Magee
Abstract: A method and an apparatus for determining a usage level of a memory device to notify a running application to perform memory reduction operations selected based on the memory usage level are described. An application calls APIs (Application Programming Interface) integrated with the application codes in the system to perform memory reduction operations. A memory usage level is determined according to a memory usage status received from the kernel of a system. A running application is associated with application priorities ranking multiple running applications statically or dynamically. Selecting memory reduction operations and notifying a running application are based on application priorities. Alternatively, a running application may determine a mode of operation to directly reduce memory usage in response to a notification for reducing memory usage without using API calls to other software.
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公开(公告)号：US09619012B2
公开(公告)日：2017-04-11
申请号：US14577027
申请日：2014-12-19
Applicant: Apple Inc.
Inventor： James Michael Magee , Ethan Bold , Goutham Mani , Abhinav Pathak , Daniel Andreas Steffen
CPC classification number: G06F9/4881 , G06F1/3206 , G06F1/3287 , G06F9/461 , G06F9/468 , G06F9/4818 , G06F9/50 , G06F9/52 , G06F9/545 , G06F2209/484 , G06F2209/485 , Y02D10/171 , Y02D10/24
Abstract: A method and an apparatus for a power assertion management are described. A power assertion indicator may be maintained for a device component having a power level. The power assertion indicator can indicate whether the power level of the device component is allowed to be lowered. A power assertion request may be sent from a first process to prevent lowering the power level of the device component before a data processing task is completed. A second process can receive a request from the first process to perform operations for the data processing task. The power level of the device component may not be allowed to be lowered before the second process completes the operations for the data processing task. The power level of the device component may be lowered after the data processing task is completed.
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Patent Agency Ranking
公开(公告)号：US09170859B2
公开(公告)日：2015-10-27
申请号：US13650083
申请日：2012-10-11
Applicant: Apple Inc.
Inventor： Ananthakrishna Ramesh , Daniel E. Crosby , James Michael Magee , Lionel D. Desai , Matthew G. Watson , Neil G. Crane
CPC classification number: G06F9/542 , G06F9/5016 , G06F2209/504 , G06F2209/508 , G06F2209/543 , Y02D10/22
Abstract: Systems, methods, and computer program products for target memory pressure event notifications are disclosed. Processes running on a device can register to receive memory pressure event notifications from a memory management system, which are sent while memory pages are being reclaimed. Active processes running on a device processor can be assigned a priority that ranges from low to high. Responsive to a memory pressure event occurring on the device, the memory management system determines whether less than a threshold number of high priority processes are active on the device. If so, the memory management system sends a memory pressure event notification to the registered process with the lowest priority among the active processes.
Abstract translation: 公开了用于目标存储器压力事件通知的系统，方法和计算机程序产品。 在设备上运行的进程可以注册以从存储器管理系统接收内存压力事件通知，这些内存管理系统在内存页面被回收时发送。 在设备处理器上运行的活动进程可以分配从低到高的优先级。 响应于在设备上发生的存储器压力事件，存储器管理系统确定在设备上是否有小于阈值数量的高优先级进程是活动的。 如果是这样，则内存管理系统向活动进程中具有最低优先级的注册进程发送内存压力事件通知。
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公开(公告)号：US10802895B2
公开(公告)日：2020-10-13
申请号：US16162040
申请日：2018-10-16
Applicant: Apple Inc.
Inventor： Matthew G. Watson , James Michael Magee
Abstract: A method and an apparatus for determining a usage level of a memory device to notify a running application to perform memory reduction operations selected based on the memory usage level are described. An application calls APIs (Application Programming Interface) integrated with the application codes in the system to perform memory reduction operations. A memory usage level is determined according to a memory usage status received from the kernel of a system. A running application is associated with application priorities ranking multiple running applications statically or dynamically. Selecting memory reduction operations and notifying a running application are based on application priorities. Alternatively, a running application may determine a mode of operation to directly reduce memory usage in response to a notification for reducing memory usage without using API calls to other software.
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公开(公告)号：US20170075739A1
公开(公告)日：2017-03-16
申请号：US15362538
申请日：2016-11-28
Applicant: Apple Inc.
Inventor： Matthew G. Watson , James Michael Magee
CPC classification number: G06F9/544 , G06F9/485 , G06F9/5016 , G06F9/5022 , G06F9/542 , G06F2209/482 , G06F2209/508
Abstract: A method and an apparatus for determining a usage level of a memory device to notify a running application to perform memory reduction operations selected based on the memory usage level are described. An application calls APIs (Application Programming Interface) integrated with the application codes in the system to perform memory reduction operations. A memory usage level is determined according to a memory usage status received from the kernel of a system. A running application is associated with application priorities ranking multiple running applications statically or dynamically. Selecting memory reduction operations and notifying a running application are based on application priorities. Alternatively, a running application may determine a mode of operation to directly reduce memory usage in response to a notification for reducing memory usage without using API calls to other software.
Abstract translation: 描述了一种用于确定存储器设备的使用水平以通知正在运行的应用以执行基于存储器使用级别选择的存储器缩减操作的方法和装置。 应用程序调用与系统中的应用程序代码集成的API（应用程序编程接口）以执行内存缩减操作。 根据从系统的内核接收的存储器使用状态来确定存储器使用水平。 正在运行的应用程序与应用程序优先级相关联，这些应用程序优先级静态或动态 选择内存减少操作并通知正在运行的应用程序是基于应用程序的优先级。 或者，正在运行的应用程序可以确定操作模式以响应于减少存储器使用的通知而直接减少存储器使用，而不使用对其他软件的API调用。
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公开(公告)号：US20150347743A1
公开(公告)日：2015-12-03
申请号：US14576692
申请日：2014-12-19
Applicant: Apple Inc.
Inventor： James Michael Magee , Russell A. Blaine , Vishal Patel , Daniel Andreas Steffen , Kevin James Van Vechten , Jacques Anthony Vidrine , Kelly B. Yancey , Jainam A. Shah
Abstract: A method and an apparatus to dynamically distribute privileges among a plurality of processes are described. Each process may have attributes including a privilege to control access to processing resources. A first process may be running with a first privilege prohibited from access to a processing resource. A second process may be running with a second privilege allowed to access the processing resource. The first process may receive a request from the second process to perform a data processing task for the second process. In response, the second privilege may be dynamically transferred to the first process to allow the first process to access the processing resource. The first process may perform operations for the data processing task with the second privilege transferred from the second process.
Abstract translation: 描述了在多个处理之间动态分配特权的方法和装置。 每个进程可以具有包括控制对处理资源的访问的特权的属性。 第一进程可以以禁止访问处理资源的第一权限运行。 第二个进程可能正在运行，允许访问处理资源的第二个权限。 第一进程可以从第二进程接收对第二进程执行数据处理任务的请求。 作为响应，第二权限可以被动态地转移到第一进程以允许第一进程访问处理资源。 第一进程可以执行具有从第二进程传送的第二特权的数据处理任务的操作。
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公开(公告)号：US20190121683A1
公开(公告)日：2019-04-25
申请号：US16162040
申请日：2018-10-16
Applicant: Apple Inc.
Inventor： Matthew G. Watson , James Michael Magee
CPC classification number: G06F9/544 , G06F9/485 , G06F9/5016 , G06F9/5022 , G06F9/542 , G06F2209/482 , G06F2209/508
Abstract: A method and an apparatus for determining a usage level of a memory device to notify a running application to perform memory reduction operations selected based on the memory usage level are described. An application calls APIs (Application Programming Interface) integrated with the application codes in the system to perform memory reduction operations. A memory usage level is determined according to a memory usage status received from the kernel of a system. A running application is associated with application priorities ranking multiple running applications statically or dynamically. Selecting memory reduction operations and notifying a running application are based on application priorities. Alternatively, a running application may determine a mode of operation to directly reduce memory usage in response to a notification for reducing memory usage without using API calls to other software.
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