JPH06314134A - Computer with suspending/resuming function - Google Patents

Abstract

PURPOSE:To shorten the start time of the computer with the suspending/ resuming function when it is restarted. CONSTITUTION:This computer is equipped with a central processing unit, a main storage device, a swap-out data judging means 21 which selects resume data required for a resuming process and unnecessary swap data among data stored in the main storage device when a suspending process is performed, and a resume data storage device 3 which stores the resume data. Further, the computer is equipped with a saving means 23 which saves the resume data in a resume data storage device 3, a swap data storage device 4 which stores the swap data, a swap-out means 28 which saves the swap data in the swap data storage device 4 at the time of the suspending process, and a restoration means 25 which transfers the resume data to the main storage device at the time of the resuming process when the power source is turned ON.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a computer having a suspend / resume function, and more particularly to a computer configuration capable of speeding up resume processing.

[0002]

2. Description of the Related Art In recent years, computers have been increasingly used intermittently while moving as the portability has been improved due to the progress of miniaturization and weight reduction. A suspend / resume function is essential to support such usage. This function stores, in a storage device, information necessary to execute an OS (operating system) or application running on a computer when the user turns off the power during execution of a certain process when the power-off request is made. When the power is turned on again (suspend processing) and the power is turned on again, the saved information is restored to automatically reproduce the state immediately before the power-off request (resume processing). When the function is used, it is not necessary for the user to perform the operation of stopping and restarting the OS and the application by himself / herself when the power is turned off or turned on again, and the usability of the computer is improved for the user.

In a conventional computer having a suspend / resume function, the suspend process is realized by saving all the data stored in the main storage device to a non-volatile secondary storage device such as a hard disk. The resume process is performed by restoring all the data saved in the secondary storage device to the main storage device.

[0004]

However, recently, along with downsizing and portability of computers, computers equipped with large-capacity main memory devices, hard disk devices, etc. have been developed. In such a computer, if the suspend / resume processing as described above is performed, the processing time of the data saving processing from the main storage device to the secondary storage device and the data recovery processing from the secondary storage device to the main storage device becomes long. The problem has arisen. In particular,
When the processing time of the resume processing is prolonged, the time from when the user turns on the power switch until the state when the power is turned off is restored and becomes executable becomes longer. For this reason,
The operability of the computer deteriorates due to the unnecessary waiting time at the time of restarting. Such a problem becomes more and more prominent as the storage capacity of the main storage device or the like increases in the future.

Therefore, the present invention has been made in view of the above problems.
An object of the present invention is to provide a computer having a suspend / resume function capable of reducing the processing time of the suspend / resume processing.

[0006]

A computer having a suspend / resume function according to the invention of claim 1 stores a central processing unit for executing various instructions, and data necessary for executing the processing of the central processing unit. A main memory device, a swap-out data judging means for judging, from the data stored in the main memory device, the resume data necessary for performing the resume process and the swap data not necessary when executing the suspend process; And a resume data storage device for storing resume data, a resume data saving device for saving the resume data from the main storage device to the resume data storage device when the suspend process is executed, and a non-volatile Swap data storage device for storing swap data stored in a storage device And a swap data saving means for saving the swap data from the main storage device to the swap data storage device when the suspend process is executed, and the main memory for the resume data saved in the resume data storage device during the resume process when the power is turned on again. Resume data recovery means for transferring to the device.

According to the invention of claim 2, in addition to the invention of claim 1, the computer according to claim 1 further stores data necessary for continuously executing the restored process after the resume process is performed. A swap-in data judging means for judging from the swap data stored in the device, and a continuous data recovering means for transferring the swap data judged by the continuous data judging means from the swap data storage device to the main storage device are provided. There is.

[0008]

A computer according to a first aspect of the present invention comprises a resume data storage device for saving data necessary for resume processing and a swap data storage device for saving swap data not necessary for resume processing. ing. During the suspend process, the swap-out data determination means determines the resume data necessary for the resume process and the unnecessary swap data from the data stored in the main storage device at the time of the power-off request. Then, the resume data saving means saves the resume data from the main storage device to the resume data storage device, and the swap data saving device saves the swap data from the main storage device to the swap data storage device.

At the time of the resume processing, the resume data recovery means restores the resume data saved in the resume data storage device to the main storage device. And
Based on the resume data restored in the main memory,
The execution state when the power is turned off is reproduced. In addition, claim 2
In the computer according to the present invention, the swap-in data determination means selects data necessary for further continuously executing the processing state reproduced by the resume processing from the swap data saved in the swap data storage device. select. Then, the continuous data recovery means transfers the corresponding swap data to the main storage device in accordance with the selection request of the swap-in data determination means.

[0010]

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a block diagram showing a main configuration of a computer adopting a suspend / resume system according to an embodiment of the present invention. The computer includes a central processing unit (CPU) 1 that executes various calculations and instructions,
A main storage device 2 for storing an OS, applications, data, etc. necessary for various processes in the central processing unit 1.
And a resume data storage device 3 for saving data (referred to as resume data) necessary for the resume process among the data stored in the main storage device 2 during the suspend / resume process, and the suspend / resume process, Of the data stored in the main storage device 2, it is composed of a swap data storage device 4 for saving data (referred to as swap data) that is not necessary for resume processing.

The resume data storage device 3 and the swap data storage device 4 are realized by, for example, a non-volatile hard disk device or the like that can retain the stored contents even when the power is turned off. Then, a part of the storage area of the hard disk device is allocated to the resume data storage area (resume data storage device 3), and another part of the storage area is allocated to the swap data storage area (swap data storage device 4).

FIG. 2 is a block diagram showing a functional configuration for exhibiting the suspend / resume function in the computer having the configuration of FIG. With reference to FIG. 2, the suspend processing is performed by swap-out data determination means 21, swap-out request means 22, and save means 23.
And swap-out means 29 and suspend / resume means 20.

The swap-out data judging means 21 is present in the main memory 2 when the power-off request is given.
It is determined whether the data to be saved to the resume data storage device 3 or the data to be saved to the swap data storage device 4 from among S, applications, user data, and the like. The swap-out request means 22 is a swap-out means 28.
In response to the request, the swap-out data determination means 21 issues a request from the main storage device 2 to swap out the swap data determined to be data to be saved in the swap data storage device 4.

The swap-out means 28 swaps out swap data from the main storage device 2 to the swap-data storage device 4 in response to a request from the swap-out requesting means 22. The swap-out means 28 may use swap-in / swap-out means used when the OS 24 manages the main storage device by the virtual storage system of the paging system.

The save means 23 saves the resume data, which the swap-out data determination means has determined to be data to be saved in the resume data storage device 3, from the main storage device 2 to the resume data storage device 3. The resume processing is achieved by the recovery means 25, the swap-in data determination means 26, the swap-in request means 27, the swap-in means 29 and the suspend / resume means 20. The resume data saved in the resume data storage device 3 is transferred to the main storage device 2.

The swap-in data judging means 26 judges from the swap data swapped out to the swap data storage device 4 the data necessary for continuously executing the processing restored after the power is turned on again. . The swap-in request means 27 issues a request to the swap-in means 29 to swap-in required swap data to the main storage device 2 based on the judgment of the swap-in data judgment means 26.

The swap-in means 29 swaps swap data from the swap data storage device 4 into the main storage device 2 in response to a request from the swap-in request means 27. Like the swap-out means 28, the swap-in means 29 may use swap-in / swap-out means used when the OS 24 manages the main storage device by the virtual storage system of the paging system.

The suspend / resume means 20 controls the suspend / resume processing in response to the power OFF / ON request. The operation of each unit in the suspend process and the resume process of the computer configured as described above will be described. FIG. 3 shows an operation flow of the suspend process, and FIG. 4 shows an operation flow of the resume process. Further, FIG. 5 schematically shows a data transfer state in the suspend / resume processing, and FIG.
Shows schematically a data transfer state during continuous processing after resume processing. Hereinafter, the operation flow of FIGS. 3 and 4 will be described with reference to FIGS. (Suspend Processing) When the user turns off the power switch, a power-off request is given to the suspend / resume means 20, and the suspend processing is started.

First, the processing of the program being executed is stopped when the power-off is requested (step 301). For example,
In FIG. 5, among the user applications 1 to 3 existing in the storage area of the main storage device 2, the user application 1 is being executed, the user application 2 is in a sleep state, and the user application 3 is not being executed. Assume the state. In this case, the processing of the OS program and the user applications 1 and 2 is stopped.

Next, the swap-out data judging means 21
When the power is turned on again, the swap data is judged from the data in the main storage device 2 required to continuously execute the processing when the power is turned off (step 30).
2). Whether or not to swap out to the swap data storage device 4 is determined based on whether or not the data is necessary to restore the state that was being executed when the power was turned off.
For example, in FIG. 5, the user application 3 or the user application 1, which is not in the running state,
In 2, the data and the like that are not used when the power is turned off are determined to be swap data. Also, OS data 4
Since 1 and the suspend / resume program 42 are necessary for the resume process, they are judged to be resume data, not swap data.

Next, the swap-out requesting means 22 outputs O
The swap-out means 28 of S24 is requested to swap-out the swap data (step 30).
3). The swap-out means 28 of the OS 24 having the swapping function saves the swap data on the main storage device 2 to the swap data storage device 4. Next, the evacuation means 23
Saves the resume data remaining on the main storage device 2 after the swap-out to the resume data storage device 3 (step 304). For example, in the case shown in FIG.
S data 41, suspend / resume program 42
And a part of the user applications 1 and 2 is saved.

When the saving of all data from the main memory 2 is completed, the power is turned off (step 305).
The suspend process is completed by the above process. (Resume Processing) When the user turns on the power switch again, the suspend / resume means 20 starts the resume processing.

As shown in FIG. 4, first, the recovery means 25
Transfers the data saved in the resume data storage device 3 to the main storage device 2 (step 401). For example, in FIG. 5, the OS saved in the resume data storage device 3 is stored in the storage area 30b of the main storage device 2.
The program data 41, the suspend / resume program 42, and some data of the user applications 1 and 2 are restored. Next, the swap-in data determination means 26 determines the data necessary for continuous execution from the data swapped out to the swap data storage device 4 (step 402).

Next, the swap-in requesting means 27 requests the swap-in means 29 to swap-in the data to be swap-in judged by the swap-in data judging means 26 (step 403). Then, the swap-in means 29 of the OS 24 swaps in the swap data storage device 4 to the main storage device 2 to restore the data. For example, in the case shown in FIG. 6, the data required for the continuous execution of the user applications 1 and 2 is restored in the storage area 30c of the main storage device 2.

Finally, the processing of the program is restarted (step 404). Then, after the processing is restarted, the remaining data saved in the swap data storage device 4 is read to the main storage device 2 as necessary and provided for the processing. As described above, since the computer according to the above-described embodiment is configured to restore only the data necessary for the resume process to the main storage device 2 during the resume process, it is reproduced after the power is turned on as compared with the conventional computer. It is possible to shorten the time until it becomes possible to execute the specified processing.

Further, since only the data necessary for the resume processing is saved in the resume data storage device 3, the data can be saved as compared with the conventional device which saves all the data in the main storage device in the storage device. The storage capacity of the evacuation storage device can be reduced. Therefore, when a hard disk device or the like is used for saving data, the storage area for saving resume data can be reduced, and the storage area available to the user can be increased accordingly.

[0027]

As described above, according to the present invention, when the suspend / resume function for holding / saving the state at the time of power-off request and returning the state at the time of turning on the power again is realized, the swap-out data judging means is used. After saving only the data determined to be necessary for resume processing to the resume data storage device, saving other data to the swap data storage device, and restoring the data saved in the resume data storage means to the main storage device when the power is turned on again. In addition, since it is configured to restore the data by swapping in only the data required for continuous execution from the data swapped out to the swap data storage device, the data required for the resume processing is transferred to the main storage device. The amount of data can be reduced, and the startup time at restart can be shortened.

[Brief description of drawings]

FIG. 1 is a block diagram showing a main configuration of a computer according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a suspend / operation in the computer shown in FIG.
It is a functional block diagram for performing a resume process.

FIG. 3 is a flowchart showing a suspend process in the above embodiment.

FIG. 4 is a flowchart showing a resume process in the above embodiment.

FIG. 5 is a data flow diagram schematically showing the flow of save data during suspend / resume processing in the above embodiment.

FIG. 6 is a data flow diagram schematically showing the flow of saved data during continuous execution after resume processing in the above embodiment.

[Explanation of symbols]

 1 Central Processing Unit 2 Main Storage Device 3 Resume Data Storage Device 4 Swap Data Storage Device 20 Suspend / Resume Means 21 Swap Out Data Judging Means 22 Swap Out Request Means 23 Evacuation Means 24 OS 25 Recovery Means 26 Swap In Data Judging Means 27 Swaps In request means 28 Swap out means 29 Swap in means

Claims (2)

[Claims] 1. When a power-off request is made, a suspend process for holding the processing state at that time is performed, and when the power is turned on again, the processing state when the power-off request is made is restored. A computer having a suspend / resume function for performing the resume processing of the above, including a central processing unit that executes various instructions, a main storage device that stores data necessary for executing the processing of the central processing unit, and a suspend processing execution Sometimes, a swap-out data determination unit that determines the resume data necessary for performing the resume processing and the swap data that is not required from the data stored in the main storage device; A resume data storage device for storing the resume data, and the resume data when the suspend process is executed. Resume data saving means for saving from the main storage device to the resume data storage device, a swap data storage device having a non-volatile property for storing the swap data stored in the main storage device, and a suspend process execution Sometimes, swap data saving means for saving the swap data from the main storage device to the swap data storage device, and transfer of the resume data saved in the resume data storage device to the main storage device during resume processing A computer having a resume data recovery means. 2. The swap data stored in the swap data storage device, wherein the computer further stores data necessary for continuously executing the restored process after the resume process is performed. 2. The swap-in data judging means for judging from the swap-in data judging means, and the continuous data recovering means for transferring the swap data judged to be necessary by the swap-in data judging means from the swap data storage device to the main storage device. Computer.