JP4846553B2 - Resume method, program, and information processing apparatus - Google Patents

Description

  The present invention relates to a resume function of an information processing apparatus, and particularly to handling of an application during a resume operation.

  An increasing number of devices such as PCs (Personal Computers) are equipped with a Resume function to reduce power consumption. When the system enters the suspend or hibernation state, the PC main unit can be turned off except for the backup power supply. Then, before use, necessary information can be restored, and the work can be resumed from the state immediately before the suspension or hibernation.

  With the recent increase in the memory capacity of devices and the increase in OS (Operating System) code amount, the time required for this restoration operation tends to increase.

For this reason, an invention has been proposed in which a memory image of each program that is prepared in advance at the time of start-up is loaded at the time of return to shorten the time from the start of application start-up to the start-up completion (see Patent Document 1). reference).
JP 2005-284491 A

  The resume function is a function for realizing power saving in a non-use time for a while while maintaining a state in use. However, when returning from the suspend or hibernation state to the in-use state, it takes a lot of time to restore the device settings and the memory use state. In addition, when the application after return is restarted in an initial state including hardware initialization, more time is required.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a resume method, a program, and an information processing apparatus that can reduce the time required for returning from a suspend or hibernation state.

The resume method of the present invention includes:
When the information processing apparatus resumes from the suspend or hibernation state, it is a resume method that involves hardware initialization.When the information processing apparatus receives a suspend or hibernation request, it terminates the running application and then resumes. The application is started, and the started application executes initialization processing excluding hardware initialization processing among the initialization processing, and then stops the startup processing. After the application is stopped, the information processing apparatus is suspended. or with shifts to the hibernation state, when the information processing apparatus receives a request for return from suspend or hibernation state, the information processing apparatus starts the return process from suspend or hibernation state, the return processing of the information processing apparatus After completion, the application that has been stopped, resuming wherein said activation process to resume you start the initialization of the hardware <br/>.

Another aspect of the resume method is as follows:
In the information processing apparatus, a resume method that involves hardware initialization when returning from a suspend or hibernation state.When an application receives a suspend or hibernation request, the application that is running is terminated and restarted. After executing the initialization process of the initialization process excluding the hardware initialization process, the application instructs the information processing apparatus to enter the suspend or hibernation state and stops the startup process. After the stop, when the information processing apparatus shifts to a suspend or hibernation state and the information processing apparatus receives a return request from the suspend or hibernation state, the information processing apparatus is suspended or hibernated. Start the returning process from the state, after the return process of the information processing apparatus is completed, the application that has been stopped, characterized in that the activation process the resume you start the initialization of the hardware Resume method.

  In addition, a program and an information processing apparatus for implementing these resume methods are provided.

  Realizes a resume function that can reduce the time required to return from the suspend or hibernation state.

  FIG. 1 is a diagram illustrating an example of a block configuration diagram of the information processing apparatus according to the present embodiment. FIG. 1 shows a PC 100, a CPU 101, a memory 102, an input device 103, a display device 104, an HDD 105, a communication unit 106, a LAN 107, an internal bus 108, and a power supply unit 109.

  The PC 100 is a notebook PC having a resume function. Resume here refers to a function that saves the state immediately before turning off the PC and resumes work from the state before turning off the power when the power is turned on next time. The resume function includes two implementation methods. One is hibernation in which the data on the memory is copied to a magnetic disk or the like when the interruption is performed so that the power of the memory is turned off. Each method takes less time and effort than the case of closing and starting the OS and application software one by one, and can reduce power consumption. Preferably, when this function is applied to a portable device such as a node PC, it can be used immediately after being stopped when needed, and can be used immediately even when used. When not in use, such as when carrying, battery consumption can be reduced, increasing the convenience of the device. In the following description, hibernation will be described as an example of the resume function, but the present invention is not limited to this.

  The CPU 101 is a CPU (Central Processing Unit) built in the PC 100. It also controls the entire PC100.

  The memory 102 is a memory device composed of a semiconductor memory. Normally, programs and temporary data processed by the CPU 101 are stored.

  The input device 103 may be a keyboard, a mouse, or a touch pad, for example. It is provided in the PC 100 and is used to input user instructions such as commands.

  The display device 104 is an LCD display built in the PC 100, for example.

  The HDD 105 is a magnetic disk device built in the PC 100. A program to be processed by the CPU 101 is stored in the HDD 105 in advance. In the case of hibernation, it is also used as a place for storing data such as a memory in the HDD 105.

  The internal bus 106 is a bus for connecting the constituent units in the PC 100 and exchanging data. Each component unit realizes data exchange via the internal bus 106.

The power supply unit 107 supplies power to each component included in the PC 100. Moreover, electric power can be supplied or interrupted for each component as necessary. For example, it is conceivable that power is supplied to the memory 102 when the system is suspended, but the power of other components is cut off.

  FIG. 2 is a diagram showing an operation flow of the conventional resume function.

When the user of the device tries to shift to hibernation, first, the processing of the running application is terminated (step S01). The application according to the present embodiment is assumed to be an application that should be initialized from the initial state when the power of the device is turned off, regardless of whether or not the resume operation is performed, and to be started again from the initial state. For example, there may be a case where it is desirable to shorten the startup time of the device, such as an application running on an embedded device, but it is preferable to initialize the memory and hardware in the work area when returning.

Next, the hibernation operation by the OS is started (step S02), and the power source 109 cuts off the power of the device (step S03).

  When power is supplied from the power supply unit 109 triggered by an operation such as a user operating a power switch of the device or hitting a keyboard to resume use (step S04), the OS that was first started up before hibernation A process for returning to (Step S05) is started.

  When the necessary return processing is completed, the OS activates the previously terminated application (step S06). When it starts, it loads libraries necessary for its own operation and initializes memory areas.

  Next, the application finishes the hardware initialization process necessary for itself to operate (step S07), and starts normal processing (step S08).

  FIG. 3 is a diagram illustrating an example of an operation flow of the resume function according to the present embodiment. The operation of the application is different from the conventional resume operation.

When the user instructs hibernation, the application receiving this instruction from the OS is temporarily terminated (step S11), and then the application is restarted (step S12). At this time, the application loads a library necessary for its own operation, initializes a memory area, and the like, and then temporarily stops processing before hardware initialization processing.

  Next, the hibernation operation by the OS is started (step S13), and the power source 109 cuts off the power of the device (step S14).

  When power is supplied from the power supply unit 109 triggered by an operation such as a user operating the power switch of the device or hitting the keyboard to resume use (step S15), it is before hibernation by the first booted OS. The process for returning to (Step S16) is started.

  When the OS completes the necessary return processing, the application instructs the continuation of the processing to the previously stopped application, so that the application starts the hardware initialization processing (step S17). Thereafter, the application starts normal processing (step S18).

  At this time, the initialization of the hardware by the application (step S17) must be performed after the power is resumed since the reset is performed when the power is turned off.

  With this configuration, the memory state immediately before the hardware initialization process by the application can be saved, so that the process after the return is reduced. Therefore, it is possible to shorten the application activation time required for returning from the hibernation state.

  FIG. 4 is a diagram illustrating an example of a resume operation flow of the application according to the present embodiment.

  If it is determined that the application has received a hibernation instruction (Yes in step S21), the application is temporarily terminated and restarted (step S22). The hibernation instruction is acquired by the application through the OS from the user.

  After restarting, after loading a library necessary for its own operation, initialization of a memory area, and the like (step S23), the processing is temporarily stopped while leaving the hardware initialization processing.

  When necessary initialization other than hardware initialization is completed, the OS is notified that preparation for entering hibernation is completed (step S24).

  FIG. 5 is a diagram showing an example of a resume operation flow of the OS according to the present embodiment.

  When the OS determines that a hibernation instruction has been received from the user (Yes in step S31), the OS instructs hibernation to the active application (step S32). This embodiment is a case where the OS side acquires a user's hibernation request. As a modification, the application may receive a user resume request. In this case, the application notifies the OS that there has been a hibernation instruction. In any case, there is no difference in the subsequent processing flow and effects.

  Next, it is determined whether or not the application has been prepared for hibernation (step S33). While the application is not ready for hibernation (No), the hibernation process by the OS is awaited.

  When the application hibernation preparation is completed (Yes), the OS resumes the hibernation process (step S34).

  FIG. 6 is a diagram illustrating an example of a return operation flow of the application according to the present embodiment.

  The application that has been in the hibernation state automatically resumes processing when it is scheduled by the return processing by the OS. At this time, in order to avoid operating the OS in a halfway state, it is determined whether or not the OS recovery processing has been completed (step S42). While the OS has not recovered (No), the initialization process continues to wait in the state at the time when the OS is notified of the completion of hibernation preparation.

  When the OS is restored (Yes), the application executes hardware initialization (step S42). Thereafter, the application starts normal processing (step S43).

  When determining whether or not the OS has returned, it is conceivable to issue an event from the OS side and end the standby state by receiving this event.

  FIG. 7 is a diagram illustrating an example of a return operation flow of the OS according to the present embodiment.

  The OS that has returned from the hibernation state returns to the state before hibernation (step S51). Thereafter, it notifies the application in the standby state immediately before the hardware initialization process that the initialization operation may be continued (step S52).

  With this configuration, since the memory state up to immediately before the hardware initialization process by the application can be saved, the process after the return is reduced. Therefore, it is possible to shorten the application startup time required for returning from the hibernation or suspend state.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

It is a figure which shows an example of the block block diagram of the information processing apparatus concerning this embodiment. It is a figure which shows the operation | movement flow of the conventional resume function. It is a figure which shows an example of the operation | movement flow of the resume function concerning this embodiment. It is a figure which shows an example of the resume operation | movement flow of the application concerning this embodiment. It is a figure which shows an example of the resume operation | movement flow of OS concerning this implementation site. It is a figure which shows an example of the return operation | movement flow of the application concerning this embodiment. It is a figure which shows an example of the return operation | movement flow of OS concerning this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... PC, 101 ... CPU, 102 ... Memory, 103 ... Input device, 104 ... Display device, 105 ... HDD, 106 ... Internal bus, 107 ... Power source Part

Claims (6)

A resume method that involves hardware initialization when returning from a suspend or hibernation state in an information processing apparatus,
When the information processing apparatus receives a suspend or hibernation request, after ending the running application, start the application again,
The started application stops the startup process after executing the initialization process except the hardware initialization process among the initialization processes,
After the application is stopped, the information processing apparatus shifts to a suspend or hibernation state,
When the information processing apparatus receives a return request from the suspend or hibernation state, the information processing apparatus starts a return process from the suspend or hibernation state and stops after the information processing apparatus completes the return process. It said application, resume wherein said activation process you start the initialization processing of the hardware by restarting the <br/>. In the information processing apparatus, a resume method with hardware initialization when returning from a suspend or hibernation state,
If the application receives a suspend or hibernation request, it will restart the application after it is running,
The application performs initialization processing excluding hardware initialization processing among the initialization processing, and then instructs the information processing apparatus to shift to a suspend or hibernation state and stops the startup processing,
After the application is stopped, the information processing apparatus shifts to a suspend or hibernation state,
When the information processing apparatus receives a return request from the suspend or hibernation state, the information processing apparatus starts a return process from the suspend or hibernation state and stops after the information processing apparatus completes the return process. the application may resume wherein the resume the boot process you start the initialization of the hardware has. A program that runs on an information processing device and that involves hardware initialization when returning from a suspend or hibernation state,
When receiving a suspend or hibernation request from the information processing apparatus, a step of restarting the running application after exit,
When the application is activated again, the step of stopping the activation process after executing the initialization process excluding the hardware initialization process among the initialization processes;
Receiving a return request from the suspend or hibernation state after stopping the activation process;
When receiving the request, the information processing apparatus performs a return process from the suspend or hibernation state; and
Wherein after the return process is completed, the program characterized by having a step you start the initialization processing of the hardware by restarting the activation process. A program that runs on an information processing device and that involves hardware initialization when returning from a suspend or hibernation state,
If a suspend or hibernation request is received, a step to restart after completion,
A step of instructing the information processing apparatus to shift to a suspend or hibernation state after executing an initialization process excluding a hardware initialization process in the initialization process, and stopping a startup process;
When the information processing apparatus performs a return process from the suspend or hibernation state after the information processing apparatus transitions to the suspend or hibernation state, the start process is resumed after the return process is completed. a program characterized by comprising the steps you start the initialization of hardware. An information processing apparatus having a resume function,
An application running on the information processing apparatus;
Means for activating the application again after terminating the activated application when a suspend or hibernation request is received;
A means of transitioning to a suspend or hibernation state;
Means for receiving a return request from the suspend or hibernation state after transitioning to the suspend or hibernation state;
And a means for starting recovery processing from the suspend or hibernation state when the accepting means receives a return request from the suspend or hibernation state,
The application is
Means for stopping the startup process after executing the initialization process excluding the initialization process of the hardware of the information processing apparatus among the initialization processes after startup;
When the information processing apparatus performs a return process from the suspend or hibernation state after the information processing apparatus enters the suspend or hibernation state, the start process is resumed after the return process is completed. the information processing apparatus characterized by comprising: means you start the initialization processing of the hardware. An information processing apparatus having a resume function,
An application running on the information processing apparatus;
When a suspend or hibernation request is received, a means for transitioning to a suspend or hibernation state,
Means for receiving a return request from the suspend or hibernation state after transitioning to the suspend or hibernation state;
A means for starting the return processing from the suspend or hibernation state when the accepting means receives a return request from the suspend or hibernation state;
The application is
When receiving the suspend or hibernation request, after completion, and means for restarting,
After executing the initialization process after the restart, excluding the hardware initialization process of the information processing apparatus, the information processing apparatus is instructed to enter the suspend or hibernation state and started. Means for stopping the process;
When the information processing apparatus performs a return process from the suspend or hibernation state after the information processing apparatus enters the suspend or hibernation state, the start process is resumed after the return process is completed. the information processing apparatus characterized by comprising: means you start the initialization processing of the hardware.

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