JPH0728545A - Computer with resume function - Google Patents

Abstract

(57) [Summary] [Object] To provide a computer capable of identifying a process requiring special processing for resume processing and causing the special processing to be performed. [Configuration] This computer stores a system termination detection unit 107 for detecting a system termination request, a system activation detection unit 110 for detecting a system activation request, and saves data necessary for resume processing in a nonvolatile memory 104 at the time of system termination. System state saving processing means 108
And a system state reproduction processing unit 111 that reads and restores the saved data when the system is restarted, a restore process storage unit 109 that stores a process that needs to receive a predetermined restore signal, and a restore signal that sends the restore signal. Sending means 114 and restoration process updating means 11 for registering and deleting information of processes that need to receive restoration signals
5 and 5.

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 resume function capable of restoring a process which has been interrupted when the power is turned on again, and more particularly to a process which requires reception of a restore signal such as an end notification during the restore process. The present invention relates to a computer configuration capable of resume processing.

[0002]

2. Description of the Related Art In recent years, in computers such as personal computers and workstations, when the power is turned off, all the states necessary for continuing execution of the program currently being executed are retained and the power is turned off again. An increasing number are provided with a resume function circuit capable of continuously executing a program process when turned on. With this resume function, the conventionally complicated procedure of booting / shutting down the computer is unnecessary or greatly simplified, and the operability for the user is improved.

FIG. 10 is a block diagram showing the configuration of a conventional computer system having a resume function disclosed in Japanese Patent Laid-Open No. 4-362717. This conventional computer includes a CPU 101, a memory 102, a control device 103, a non-volatile memory 104, a display device 105,
Input device 106, power switch 112, power device 113
And a printer device 114. Then, in order to perform the resume process, the system end detecting means 107,
System state saving processing means 108, process termination means 1
09, a system activation detection means 110 and a system state reproduction processing means 111.

The conventional computer resume process is as follows:
The procedure is as follows. First, the user turns on the power switch.
When the FF operation is performed, the system end detection means 107 detects this and the data saving process is started. The process ending unit 109 sends an end notification to a process that needs to receive the end notification registered in advance in the restoration process table among the processes currently in the execution state, and ends the process. An example of such a process is, for example, a process involving printer output. In order to perform the resume process when the process accompanied by the printer output is in the execution state, it is necessary to perform the saving process for outputting the data output to the printer again correctly when the power is turned on again. For this reason, such a process needs to receive a termination notification in order to perform the termination process correctly.

After the process termination processing is performed, the system state saving processing means 108 saves the data required for resume to the non-volatile memory 104. Then, the power supply device 113 cuts off the power supply. Next, when the user turns on the power switch again, the system activation detection device 110
Detects this, and the data restoration process is started. The system state reproduction processing unit 111 is a nonvolatile memory 104.
The data saved in the CPU 101, the memory 102
Restore the state before the power was turned off.

By such an operation, the user can continue to execute the state before the power is turned off.

[0007]

However, in the conventional computer, the process termination means 109 is configured to transmit the termination signal to the process registered in advance in the restoration process table. For this reason, if the user creates a new process and installs it in the computer, and this process requires an end notification during the resume processing, the end notification cannot be received during the resume processing. . If the end notification is not received, this new process, when restored, will not be properly restored to the state before the power was turned off. Therefore, in order to make all the processes that require the end notification the target of the end notification transmission from the process end unit 109, the user sends the end notification to the restoration process table separately from the mounting of the new process. It requires work to register the process to be targeted. Such work is troublesome and requires extra work and attention to the user, and there is a problem in that an operational burden is imposed.

Therefore, the present invention has been made in order to solve the above problems, and identifies a process requiring a special process for the resume process and causes the special process to be performed. The purpose is to provide a computer capable of.

[0009]

According to a first aspect of the present invention, there is provided a computer comprising: a system termination detecting means for detecting a system termination request; a system activation detecting means for detecting a system activation request; and a system termination detecting means. When an end request is detected, the system state save processing means for saving the data necessary for the process in the execution state to hold the execution state in the non-volatile storage means, and the system activation detection means for the system activation request. When it detects the error, it reads the data stored in the non-volatile memory and restores the execution status of the process before the system is terminated. The system state reproduction processing means and the process is interrupted and terminated, and then the process is restored again. Process that needs to receive a predetermined restoration signal in order to continue execution of the process from the interrupted state And restore process storing means for storing,
When the system state reproducing means restores the system, the restore signal sending means for transmitting the restore signal to the process stored in the restore process storage section and the process that needs to receive the restore signal are activated without depending on the resume processing. In this case, there is provided restoration process updating means for storing the process information in the restoration process storage means and deleting the process information from the restoration process storage means when the execution state of the process ends.

According to a second aspect of the invention, in the computer according to the first aspect, the restoration process storage means stores identification data of a process that needs to receive the restoration signal for resume processing and the type of the restoration signal. is doing.

[0011]

In the computer according to the first and second aspects of the present invention, the restoration process update means stores the process in the restoration process storage means when the process that needs to receive the restoration signal is activated without resume processing. Store information. As a result, the process that is the destination of the restoration signal during the resume process is automatically registered without the user's operation. Further, when the resume process is completed, the process information is deleted from the restoration process storage means.

When the process information is registered in the restoration process storage means, the preparation for the resume process is completed.
When the system termination detecting means detects the system termination request in response to the user's power-off operation, the system state saving processing means performs the data saving processing. Further, when the system activation detecting means detects the system activation request, the system state reproduction processing means performs the restoration processing of the saved data.
Then, when the system state reproducing means restores the system, the restore signal sending means sends the restore signal to the process stored in the restore process storage section.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of a computer according to an embodiment of the present invention. In FIG. 1, the computer includes a CPU 101, a memory 102, and a control device 10.
3, the non-volatile memory 104, the display device 105, the input device 106, the power switch 112, the hardware configuration of the power supply device 113, the system end detection unit 107, the system state save processing unit 108, the restoration process storage unit 109, the system activation detection unit. 110, system state reproduction processing means 11
1. Restore signal sending means 114 and storage section updating means 115
And the software configuration of.

A CPU (Central Processing Unit) 101 decodes and executes various instructions. Here, in FIG.
The register configuration inside U101 is shown. In FIG. 2, 201 is a program counter (PC), 202 is a processor status word (PSW) indicating the state of the CPU 101, and 203 to 209 are general-purpose register groups each including 16 registers. Furthermore, PSW202
Is a current window pointer (CWP) indicating which general register group 203 to 209 is currently used.
301, a current status (CS) 302 indicating the current mode state of the CPU 101, and a pre-veth status (PS) 303 indicating the mode state of the CPU 101 when an interrupt occurs.

The memory 102 stores program instructions and data. FIG. 3 is a diagram conceptually showing a storage state of the memory 102, in which an OS area 1101, a window system area 1102, and a window data area 110 are shown.
5, 1106 and application areas 1103, 11
04 is illustrated. The non-volatile memory 104 is composed of, for example, a hard disk, and during the resume process,
Stores data required for resume processing.

The power switch 112, when operated by the user, sends a power-off request signal to the system end detection means 107, and also sends a power-on request signal to the system activation detection means 110. System end detection means 1
07 receives the power OFF request signal from the power switch 112 and generates an interrupt signal for notifying the end of the system.

Upon receiving the power-on request from the power switch 112, the system activation detecting means 110 receives the CPU 10
A power-on reset signal is output for 1. Furthermore, the restoration process storage unit 109 and the restoration signal sending unit 11
4 and the restoration process updating means 115 controls termination processing for a process that needs to receive a signal (hereinafter, referred to as a restoration signal) required for the process to be restored to a normal state during resume processing.

First, the restoration process storage unit 109 stores information on processes that need to receive a restoration signal as a restoration process table. FIG. 4 conceptually shows an example of the restoration process table. As shown in FIG. 4, when the process 1 and the process 2 require the reception of the restoration signal, the restoration process table 400 shows that the restoration signal identifier “9” corresponds to the process 1 identifier “106”. “,” And the identifier “15” of the restoration signal is registered for the identifier “249” of the process 2.

Here, there are the following types of processes that need to receive the restored signal and the types of the restored signal. (1) Printer Management Application This process is for performing processing for outputting the data requested to be output to the printer connected to the system, and requires reception of the "end notification" signal as the restoration signal. If the system terminates during the printer output process, this process receives the system termination notification, resets the flag indicating that the printer is outputting to the printer, and changes the status that the data currently being output has not been output yet. It is necessary to reset the data and output the data from the beginning to the printer when the system is restarted next time.

Therefore, the data output can be restarted from the beginning by receiving the "end notice" during the resume process and performing the above process. (2) Applications that use timers For example, a process that displays a calendar sets a timer for updating the display of the calendar when the process is started, and performs the update work, but the system is interrupted during the resume process. Then, the process of resetting the timer is required. Therefore, it is necessary to receive the "reset signal" as the restoration signal. When this signal is received, the timer can be reset and the calendar display can be updated correctly.

The restore signal sending means 114 restores the processes registered in the restore process table 400 for each process stored in the restore process storage unit 109 when the system activation detecting means 110 detects the power-on request. Send a signal to each process. The restoration process updating unit 115 is configured to, when a process that needs to receive a restoration signal is newly started or when its execution is finished.
Data of the process identifier and the identifier of the restoration signal output from this process side is received, and the restoration process storage unit 1
A new process is added to the restoration process table 400 of 09 or a designated process is deleted. By this restoration process updating means 115, a resume process is performed after a process that needs to receive a restoration signal is newly activated by a normal operation.
When the system is restarted, this process will be able to receive the restore signal and continue processing properly. Further, when the process stored in the restoration process storage unit 109 is completed, the restoration process updating unit 115 deletes the process from the restoration process storage unit 109. This allows other different processes to
Even if the same identifier is assigned, it prevents the situation where a restoration signal is erroneously sent to a process that no longer exists, the system is properly restarted, and the process is continued.

Next, the operation of the computer according to the embodiment of the present invention will be described. In the following, first, the registration process of the process that needs to receive the restoration signal will be described, and then the resume process will be described. (Process Registration Process) FIG. 5 is a flowchart showing an operation after a newly created application (process) is installed in a computer and executed, and then, after the resume process, or until the execution is completed without the resume process. Is. It is assumed that the application created by the user needs to receive the restoration signal at the time of termination processing.

The application newly created by the user is installed in the computer and translated into a processable state (step 510). When the user activates this application, the application outputs the process identifier data and the necessary restore signal identifier data to the restoration process updating means 115. The restoration process update means 115 receives the data of this process and registers it in the restoration process table 400 of the restoration process storage unit 109 (step 520).

In addition, the application performs processing (step 530). In this state, when the user turns off the power switch 112 to interrupt the process (step 540), the resume process (step 550) is started, and if there is no operation of the power switch 112, the process is continued as it is. The process ends (step 56).
0). (Resume Processing) Next, the operation of the resume processing will be described.

FIG. 6 shows the system state saving processing means 108.
8 is a flowchart showing the processing of the system state reproduction processing means 111, and FIG. 7 is a data structure diagram showing the internal structure of the nonvolatile memory 104. Further, FIG. 9 is a flow chart showing a processing flow of the restoration signal transmitting means 114. First, when the system termination detecting means 107 detects that the power switch 112 is turned off, it outputs an interrupt signal for notifying the CPU 101 of the termination of the system.

When the interrupt signal is received, the CPU 101
Causes the value of CWP 301 to increase by 1 and switches the general-purpose register group. Then, the PC 20 at the time when the interrupt occurs
The value of 1 is copied to the 16th register of the general-purpose register group indicated by CWP301, and the value of CS302 is copied to PS303. Then, the process branches to the interrupt processing program designated in advance (the value of the PC 201 is rewritten).

Thereafter, the system state saving processing means 108
Call. With reference to FIGS. 6 and 7, the system state save processing unit 108 first sets the PSW 20 of the CPU 101.
2 is stored in the PSW field 7 of the nonvolatile memory 104.
No. 02 (step 601). Next, the CPU 10
The contents of the general register groups 203 to 209 of No. 1 are stored in the CPU register field 703 of the non-volatile memory 104 (step 602).

Further, the contents of the memory 102 are stored in the memory field 704 of the non-volatile memory 104 (step 603). Further, among the internal registers of the control device 103, the registers necessary for reproducing the state (for example, the input device 10
6 baud rate register to set the communication speed with the hard disk, HD transfer mode register to set whether to transfer to the hard disk in synchronous mode, etc.
No. 04 is stored in the controller register field 705 (step 604).

Further, 1 is set in the restartable flag field 701 of the nonvolatile memory 104 (step 605). Finally, a power OFF signal is sent to the power supply device 113 (step 606). In this state, the system is powered on
The state becomes FF. Next, the user again turns on the power switch 11
When 2 is turned on, power is supplied from the power supply device 113,
The system activation detection means 110 inputs a power-on reset signal to the CPU 101, and the system state reproduction processing means 1
11 is called. Subsequently, the restoration signal sending means 11
4 is called.

Referring to FIGS. 7 and 8, the system state reproduction processing means 111 first determines whether 1 is set in the restart flag field 701 of the non-volatile memory 104 (step 801). If 1 has not been set, the same system boot processing as the normal computer system (boot processing not based on the resume function) is performed (step 809).

When 1 is set, the control device 103 is first initialized (step 802). Next, the controller register field 705 of the non-volatile memory 104.
The contents stored in (1) are read and set in the corresponding registers of the control device 103 (step 803).

Further, the data stored in the memory field 704 of the non-volatile memory 104 is read out and stored in the memory 102 (step 804). Further, for example, if screen display data is stored in the memory 102, the stored screen display data of the display device 105 is transferred to the display device 105 to restore the screen state (step 805).

Next, the data of the general-purpose register groups 203 to 209 of the CPU 101 stored in the CPU register field 703 of the non-volatile memory 104 is read and set in the corresponding register (step 806). Further, the contents of the PSW 202 of the CPU 101 stored in the PSW field 702 of the non-volatile memory 104 are read and set (step 807).

At this point, the state is the same as it was just before returning from the interrupt processing. Then, the interrupt processing program finally executes the interrupt return instruction. When this instruction is executed, the CPU 101 first copies the value of PS303 to CS302 and branches to the address stored in the 16th register of the general-purpose register group indicated by CWP (rewrites the value of PC201). And finally CWP
Decrement the value of. At this point, the state of the CPU 101 returns to the state at the time when the interrupt occurred (step 80).
8).

Next, referring to FIG. 9, the restoration signal sending means 114 searches the restoration process storage unit 109 for a process that needs to receive the restoration signal. If the process is not registered, the process of the restored process is continuously executed. If the process is registered, the process proceeds to step 902 (step 901). The restoration signal sending means 114 determines the restoration signal identifier 402 for all the processes stored in the restoration process table.
A restoration signal of the type defined by (see FIG. 4) is transmitted (step 902). For example, as shown in FIG. 4, when the process 1 and the process 2 are stored in the restoration process storage unit 109, the signal “9” is transmitted to the process identifier “106” and the process identifier “249”. , The signal “15” is transmitted.

By the above processing, each process is correctly restored to the state before the power was turned off. So after this,
The process can continue to run. Further, when the execution of this process ends, the restoration process update means 115 deletes the data related to this finished process from the restoration process table of the restoration process storage unit 109.

In the above embodiment, the "completion notice" and "reset signal" have been described as the restoration signals, but the restoration signals are not limited to these.

[0038]

As described above, the computer according to the first and second aspects of the present invention has the system end detection means for the resume processing, the system save processing means, the system activation detection means, and the system state reproduction processing means. Further, when the restoration process updating unit stores the process that needs to receive the restoration signal in the restoration process storage unit and the system state reproduction unit restores the system, the restoration signal sending unit is stored in the restoration process storage unit. Since it is configured to send the restoration signal to the process, the user need not be aware of the process that needs to receive the restoration signal and perform a predetermined process during the resume processing.
Further, it is possible to realize a computer capable of performing resume processing without performing extra operations.

[Brief description of drawings]

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

FIG. 2 is a schematic diagram showing an internal configuration of a CPU of this embodiment.

FIG. 3 is a schematic diagram schematically showing a state of a memory of this embodiment.

FIG. 4 is a conceptual diagram conceptually showing the contents of a restoration process table stored in a restoration process storage unit 109 of this embodiment.

FIG. 5 is a flowchart showing the registration processing operation of the restoration process of the computer of the present embodiment.

FIG. 6 is a flowchart showing a data saving processing operation of the computer of this embodiment.

FIG. 7 is a conceptual diagram conceptually showing the contents of the nonvolatile memory of the present embodiment.

FIG. 8 is a flowchart showing a restoration processing operation of the computer of the present embodiment.

FIG. 9 is a flowchart showing a restoration signal transmission processing operation of the computer of the present embodiment.

FIG. 10 is a block diagram showing a configuration of a conventional computer.

[Explanation of symbols]

 101 CPU 102 Memory 103 Control Device 104 Nonvolatile Memory 106 Input Device 107 System End Detection Means 108 System State Saving Processing Means 109 Restoration Process Storage Unit 110 System Startup Detection Means 111 System State Reproduction Processing Means 114 Restoration Signal Sending Means 115 Restoration Process Update means

Claims (2)

[Claims] 1. A computer having a resume function of saving data required for continuous execution of a process in a processing state in a non-volatile storage means when power is turned off and restoring the saved data when power is turned on again. There is a system termination detecting means for detecting a system termination request, a system activation detecting means for detecting a system activation request, and when the system termination detecting means detects a system termination request, the process in the execution state is in the execution state. System state save processing means that saves and saves data necessary for holding in the non-volatile storage means, and when the system boot detection means detects a system boot request, the data is saved in the non-volatile storage means. System state reproduction processing means for reading out data and restoring the execution state of the process before the system termination; Restoration process storage means for storing a process that needs to receive a predetermined restoration signal in order to resume the process and continue execution of the process from the suspended state after the process is suspended and terminated. When the system state reproducing means restores the system, a restore signal sending means for transmitting the restore signal to the process stored in the restore process storage section, and a process that needs to receive the restore signal are used for resume processing. A restore process that stores the information of the process in the restore process storage unit when the process is started without depending on the process, and deletes the information of the process from the restore process storage unit when the execution state of the process ends A computer comprising update means. 2. The restoration process storage means stores identification data of a process that needs to receive the restoration signal for resume processing and a type of the restoration signal. The listed computer.