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Virtual resource allocation method and device

A technology of virtual resources and allocation devices, which is applied in the computer field, can solve problems such as inaccurate methods, the kernel does not know user-level threads, deterministic replay of transaction memory, and hidden dangers of data competition check accuracy, so as to avoid switching omissions.

Active Publication Date: 2015-03-25
HUAWEI TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

The kernel does not know the existence of user-level threads, and the switching of user-level threads may occur in user space
The occurrence of this switch cannot be known by the kernel. Therefore, the method of saving hardware resources related to user-level threads during process context switching is not accurate enough, and the switching of user-level threads will be missed, giving transactional memory, deterministic replay and Methods such as data race checking pose serious accuracy hazards

Method used

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  • Virtual resource allocation method and device
  • Virtual resource allocation method and device

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Embodiment Construction

[0056] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0057] figure 1 It is a schematic flowchart of a method for allocating virtual resources provided by an embodiment of the present invention. The embodiment of the present invention is suitable for virtualizing hardware resources for user-level threads in an operating system, and the method is usually executed by a virtual resource allocation device, which is generally a computer or a functional unit or module in the computer. specific reference figure 1 , can include the following steps:

[0058] Step 10. When the user-level thread is suspended, the virtual resource allocation device saves the hardware resource corresponding to the user-level thread in the control ...

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Abstract

The embodiment of the invention discloses a virtual resource allocation method and device which are applied in the field of computers. Through the method and device, switching omission of a user-level thread can be avoided in the process context switching process. The method includes the steps that when the user-level thread is hung, corresponding hardware resources of the user-level thread are saved in a control data block of the user-level thread by the virtual resource allocation device; the corresponding hardware resources of the user-level thread are saved in a lightweight process control data block corresponding to the user-level thread by the virtual resource allocation device. The virtual resource allocation method and device are applied to virtual resource allocation.

Description

technical field [0001] The invention relates to computers, in particular to a virtual resource allocation method and device. Background technique [0002] Saves the relevant hardware state of user-level threads during process context switches. This method is widely used in hardware implementation methods such as transactional memory and deterministic replay. In the above application, different user-level threads need to be distinguished. For example, in deterministic replay, memory access conflicts from different user-level threads need to be checked and recorded. Therefore, when user-level threads are switched, hardware resources related to user threads need to be saved and updated. Another example is in the transaction memory, a transaction belongs to a user-level thread. When the user-level thread switches, we need to know the occurrence of the event and save the state related to the user-level thread transaction. Otherwise, transaction atomicity cannot be guaranteed. ...

Claims

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Application Information

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IPC IPC(8): G06F9/50
CPCG06F9/461
Inventor 唐士斌唐志敏宋风龙叶笑春
Owner HUAWEI TECH CO LTD
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