JP3697735B2 - Information processing system and method - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an information processing system that updates system constants that an operating system refers to for system management processing or the like while the system is operating so that the update result can be immediately reflected.
[0002]
[Prior art and problems to be solved by the invention]
In an information processing system, an operating system has various constants necessary for performing various processes such as system management as system constants.
[0003]
As is well known, the system constant includes a constant value such as the total number of files that can be opened simultaneously in the system, and the file name of a file (such as a log file) that stores information necessary for system operation. There is name information etc. to show.
[0004]
System constants may be embedded directly in the necessary programs as constant values. However, since it is not easy to change the system constants, a separate file for collecting system constants is provided and the system constants are started when the system is started. Read from the constant file and set each system constant to the required location.
[0005]
System constants are determined in consideration of conditions such as system operation when installing an information processing system, and system constant files are created. However, system constants may often need to be updated due to changes in operating conditions. .
[0006]
For this purpose, updating the contents of the system constant file can be easily performed in the same manner as updating data files.
However, in order to reflect the updated system constant in the processing of the operating system, it is necessary to temporarily stop and restart the system. This is because if the value of a related system constant changes while a process performed with reference to a certain system constant is being executed, a contradiction will occur in the process being executed and a system error will be determined. This is because there is a possibility that it will happen.
[0007]
Further, since there are often cases in which the operation mode of the system is changed depending on the time zone, it is desired that each system constant group is provided according to the plurality of system operation modes and the like and can be selected as necessary.
[0008]
An object of the present invention is to provide an information processing system in which system constants can be easily updated and the updated system constants can be immediately reflected in an operating system.
[0009]
[Means for Solving the Problems]
FIG. 1 is a block diagram showing the configuration of the present invention.
FIG. 1 shows the configuration of an information processing system. The information processing system of the first invention shown in FIG. 1 (a) is an information processing system having an operating system for managing a plurality of address spaces in parallel. When the system is started, an initial setting processing unit 43 that stores a predetermined value in the table storage area 7 and a space table storage area 9 provided corresponding to the address space 8 each time a new address space 8 is newly created are stored in the table. When the system constant setting unit 4 that sets the contents of the area 7 and the processing related to each address space 8 needs to refer to the system constant, the system constant set in the space table storage area 9 of the address space is referred to. From the operating system 1 that performs processing, and the system constant update unit 45 that updates the stored contents of the required system constants in the table storage area 7 It has been made.
[0010]
The second and third inventions shown in FIG. 1B are information processing systems having an operating system 1 that manages a plurality of address spaces in parallel, and includes a system constant file 2 and an initial setting processing unit 3. And a system constant setting unit 4 and a system constant updating unit 5 are provided.
[0011]
In the second invention, the system constant file 6 for storing various system constants is stored in the system constant file 2.
The initial setting processing unit 3 reads the system constant table 6 from the system constant file 2 and stores it in the table storage area 7 when a predetermined system is started.
[0012]
Each time the address space 8 is newly established, the system constant setting unit 4 sets the contents of the table storage area 7 in the space table storage area 9 provided corresponding to the address space.
[0013]
When the operating system 1 needs to refer to the system constant in the processing related to each address space 8, the operating system 1 refers to the system constant set in the space table storage area 9 of the address space.
[0014]
When the system constant file 2 is updated, the system constant update unit 5 updates the storage contents of the corresponding system constants in the table storage area 7 with the updated contents of the predetermined system constants in the system constant table 6.
[0015]
In the third invention, a plurality of system constant tables 6 are stored in the system constant file 2, and the initial setting processing unit 3 is determined from the system constant file 2 according to a predetermined designated input at the predetermined system startup. One system constant table 6 is selectively read out and stored in the table storage area 7.
[0016]
[Action]
The information processing system of the present invention makes it possible to immediately reflect necessary system constant updates while the system is operating without adversely affecting processing that has already been started.
[0017]
Further, in the case of an operation that requires different system constant values depending on a plurality of operation modes, it is possible to selectively use necessary system constants.
[0018]
【Example】
When different system constants are required according to a plurality of different operation modes, for example, the system constant table 6 of FIG. 1B is provided for each operation mode, and the system constant file is identified so that the table name can be identified as a key. 2 is stored.
[0019]
When the information processing system is activated and the operating system 1 is started up, the operating system 1 first activates the initial setting processing unit 3.
Therefore, for example, as shown in FIG. 2, the initial setting processing unit 3 first outputs a message requesting the table name designation of the system constant table to the operation terminal of the information processing system in processing step 10, and in processing step 11. Receive the response.
[0020]
Next, in processing step 12, it is identified whether the response has been omitted (for example, input of “carriage return only”) or a table name has been specified. If omitted, the default value of the table name determined in advance in processing step 13 is received. Set as name.
[0021]
Thereafter, the system constant table 6 determined by the reception table name is read in the processing step 14, and the contents and table name of the system constant table are set in the table storage area 7 in the processing step 15 to complete the processing.
[0022]
The table storage area 7 is provided, for example, in one fixed storage position determined in advance in this information processing system.
As usual, the operating system 1 opens an address space in response to a user's processing request and executes other system management processing. The system constant setting unit 4 is set each time a new address space is opened. to start.
[0023]
When started from the operating system 1, the system constant setting unit 4 stores the contents in the table storage area 7 at that time as the contents of the system constant table to be referred to in the processing of the address space, and stores the contents in the space table in the address space. Set to area 9.
[0024]
FIG. 3 is a process flowchart showing an example of the process of the system constant setting unit 4. In process step 20, the access right of the table storage area 7 determined in the system is exclusively occupied.
[0025]
Next, in step 21, the contents of the table storage area 7 are copied to the space table storage area 9, which is a fixed storage area defined by the system, for example, in the newly established address space, and then the exclusive occupation is released in processing step 22. To do.
[0026]
The exclusive occupancy described above is a situation in which the contents of the copy to the spatial table storage area 9 are inconsistent by updating the table storage area 7 while the system constant table in the table storage area 7 is being copied. This is to prevent access to the table storage area 7 by other processing during copying so as not to occur.
[0027]
The exclusive occupancy method may be a well-known method, for example, in which a flag bit provided corresponding to the table storage area 7 is inverted by an instruction for exclusive control.
[0028]
When changing the contents of the system constant table 6, it may be performed by a file update process in the same manner as ordinary data. For example, a system constant table creation / update utility program is provided in the operating system 1, It is easy to create a system constant table in a fixed format, and check the range of values, data format, etc. for each of various system constants that are input so as to prevent errors.
[0029]
In this case, in order to implement the present invention, when the utility program ends the update process, for example, the system constant update unit 5 is notified of each table name of the updated system constant table 6.
[0030]
FIG. 4 is a process flowchart illustrating an example of the process of the system constant update unit 5. When the table name is received in the processing step 30, the table name is compared with the table name stored in the table storage area 7 in the processing step 31.
[0031]
If there is no received table name that matches the stored table name, the process ends immediately. If the same table name exists, the system constant of Enter the process to reflect the update.
[0032]
When the system constant table set in the table storage area 7 is updated, the system constant update unit 5 reads the system constant table 6 from the system constant file 2 in a processing step 32.
[0033]
Next, the table storage area 7 is subjected to exclusive occupancy processing in the processing step 33 in the same manner as described above, and then the table storage area 7 is updated according to the update content in the processing step 34 and exclusive occupancy is performed in the processing step 35 Cancel and end the process.
[0034]
Note that some of the system constants are system constant values used for control over the entire address space, such as the total number of files that can be opened. For example, system constants of this type cannot be updated during operation. For example, each system in the system constant table may be mistaken for a system error. It is divided by a flag provided in the constant term.
[0035]
Therefore, the system constant update unit 5 copies the value of each system constant in which the non-updatable flag is set from the read system constant table to each corresponding position in the table storage area 7 in processing step 34, The update of the system constant table is reflected in the table storage area 7.
[0036]
Since the table storage area 7 is updated as described above, a new system constant is set in the space table storage area 9 of the address space that is subsequently opened, and the space is controlled by the new system constant. .
[0037]
As is clear from the above, the system constant is not updated for the address space that was established before the table storage area 7 was updated, and is set in the space table storage area 9 of that space when the space is established. Each system constant value specified is valid.
[0038]
【The invention's effect】
As is apparent from the above description, according to the present invention, in the information processing system, necessary system constant updates can be immediately reflected during system operation, and different system settings can be made depending on a plurality of operation modes. There is an effect that a numerical value can be selectively used.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of the present invention. FIG. 2 is a flowchart of processing of an initial setting processing unit. FIG. 3 is a flowchart of processing of a system constant setting unit. Explanation of]
DESCRIPTION OF SYMBOLS 1 Operating system 2 System constant file 3, 43 Initial setting process part 4 System constant setting part 5, 45 System constant update part 6 System constant table 7 Table storage area 8 Address space 9 Spatial table storage area
10-15, 20-22, 30-35 processing steps

Claims (2)

An information processing system having an operating system for managing a plurality of address spaces in parallel,
An initial setting processing unit that reads out the specified system constant table from a system constant file that holds a plurality of system constant tables and stores them in a table storage area when the system is started,
Each time an address space is newly established, the access right of the table storage area is exclusively occupied, and the contents of the table storage area are set in the space table storage area provided in the newly established address space , and then exclusive occupation A system constant setting section for canceling
The operating system that performs processing by referring to the system constant set in the space table storage area of the address space when the system constant needs to be referred to in the processing related to the address space;
An information processing system comprising: a system constant update unit that exclusively occupies the table storage area , updates the storage content of the system constant, and then releases the exclusive occupancy . An information processing method using an operating system for managing a plurality of address spaces in parallel,
A storage step for storing a system constant table for holding system constants in a system constant file;
An initialization process step of reading out the specified system constant table from a system constant file holding a plurality of system constant tables and storing them in a table storage area when the system is started;
Every time the address space is newly established, the access right of the table storage area is exclusively occupied, the contents are set in the space table storage area provided in the newly established address space , and the exclusive occupation after the processing is released. System constant setting step,
A system constant update step for exclusively occupying the table storage area and updating the storage content of the system constant when the system constant file is updated, and releasing the exclusive occupation after the update ;
An information processing method characterized by comprising:

Images