JPH07250124A - Managing method for communication data buffer - Google Patents

Abstract

PURPOSE:To improve the efficiency of transmission processing by effectively using a sent data buffer by previously calculating the total quantity of protocol headers in use and using the buffer fared on the obtained arithmetic value. CONSTITUTION:A communication application program 13 calls a protocol management part 12 first and protocols A, (b), and gamma to be used are selected and determined by communication layers 14-16, e.g. corresponding to the layers 14-16. Then the total quantity of protocol headers in use is calculated based on the determined protocols A, (b), and gamma. Then a buffer management part 11 after securing storage areas 2B-2D for the headers writes sent data in a sent data storage area 2A. Here, the application program 13 transfers the control to the protocols A, (b), and gamma in order to write the respective headers in the areas 2B-2D. Then the data are transferred to hardware 17, which sends the data out to a network.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of managing a communication data buffer when transmitting communication data by a communication processing program.

[0002]

2. Description of the Related Art FIG. 4 is an explanatory diagram of data transmission by a conventional communication processing program. In FIG. 4, 41 is a buffer management unit for managing a data buffer, 42 is a communication application for transmitting data, and 43-45. Are communication layers each having a protocol, and 46 is hardware for transferring data to the network.

In this conventional data transmission, when transmitting data, the communication application 42 operates the buffer management unit 41 to secure a buffer for storing the data, and the transmission data is transferred to the secured buffer. Then, the transmission data is passed to the layer 43, and the layer 4
By 3, the protocol required for transmission is selected, and the information header of the corresponding protocol is added to the beginning of the transmission data. Then, the lower layer 44 by the layer 43
Is called, the protocol required for transmission is selected by the layer 44, the information header of the corresponding protocol is added to the beginning of the transmission data, and the data is sequentially passed to the lower layers 44 and 45 in the same manner. The information header of the protocol corresponding to the layer is added to the beginning of the transmission data, and finally the hardware 46 sends the data to the network.

[0004]

In this case, the size of the information header differs depending on the protocol selected by each layer at the time of data transmission. In the above-mentioned conventional data transmission, the size of the information header of the protocol must be estimated. I can't. For this reason, there is a problem that the data buffer runs short when the protocol header is added during transmission, and the data buffer needs to be newly copied to another buffer, which increases the load of transmission processing.

The present invention has been made in view of the present situation of data transmission by a communication processing program as described above, and an object thereof is to effectively use a transmission data buffer to improve the efficiency of transmission processing. It is to provide a management method of a communication data buffer.

[0006]

In order to achieve the above object, a communication processing program for multi-protocol capable of processing a plurality of communication protocols is used to transmit the communication data using a communication data buffer. The present invention is a communication data buffer management method for managing a data buffer, and a communication protocol used based on a combination determination step of previously determining a combination of the communication protocols when transmitting communication data and a combination of the communication protocols. And a data buffer use step of using the communication data buffer based on the operation result of the operation step.

[0007]

According to the present invention, when transmitting communication data using a communication data buffer by a communication processing program for a multi-protocol capable of processing a plurality of communication protocols, at the time of transmitting the communication data, a combination determination step is performed in advance. A combination of the communication protocols is determined. Then, in the calculation step, the total amount of the headers of the communication protocol to be used is calculated based on the determined combination of communication protocols, and in the data buffer use step, the communication data buffer is efficiently used based on the calculation result in the calculation step. Is used for.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. Here, FIG. 1 is an explanatory view of data transmission in an embodiment of a data transmission method by a communication processing program according to the present invention, and FIG. 2 is an explanatory view showing a configuration of a transmission data buffer used in the embodiment, FIG. FIG. 3 is an explanatory diagram of protocol selection in each layer of the embodiment.

In FIG. 1, 11 is a buffer management unit for managing a data buffer, and 12 is a protocol management unit for managing a protocol. Further, as shown in FIG. 2, the transmission data buffer used in this embodiment includes a transmission data storage area 2A, a communication protocol A header storage area 2B, a communication protocol b header storage area 2C, and a communication protocol. A γ header storage area 2D and a buffer control information storage area 2E are provided.

In the present embodiment, first, the communication application 13 calls the protocol management unit 12, and the protocol to be used is set for each of the communication layers 14 to 16 according to the type of transmission data and the destination, for example, as shown in FIG. The protocol A, the protocol b, and the protocol γ are selected and determined in the layer a14, the layer b15, and the layer c16, respectively. Then, the total amount of protocol headers used is calculated based on the determined protocol A, protocol b, and protocol γ. And
Storage area 2B for header by buffer management unit 11
After ~ 2D is secured, the transmission data is written in the transmission data storage area 2A of the buffer.

Here, the control is transferred to the protocol A by the communication application 13 based on the protocol sequence in FIG. 3, and the header storage area 2B of the communication protocol A is transferred.
The header of protocol A is written in. Next, based on the protocol sequence of FIG. 3, the control is transferred to the protocol b, and the header of the protocol b is written in the storage area 2C of the header of the communication protocol b. Then, based on the protocol sequence of FIG. 3, the control is transferred to the protocol γ, the header of the protocol γ is written in the storage area 2D of the header of the communication protocol γ, and then the data is transferred to the hardware 17 that transfers the data. Then, the hardware 17 sends the data to the network.

As described above, according to this embodiment, the total amount of protocol headers to be used is calculated in advance, and the buffer is used based on the calculated value. Therefore, the header is stored in the buffer in each protocol processing routine. At the time of storage, there is no need to move data due to lack of buffer capacity, and the efficiency of transmission processing improves.

[0013]

According to the present invention, when a communication data buffer is used to transmit communication data, a communication protocol combination capable of processing a plurality of communication protocols determines a combination of communication protocols in advance. , The total amount of the headers of the communication protocol used is calculated based on the determined combination of communication protocols, so the communication data buffer can be used accurately based on the obtained calculation result to improve the communication processing efficiency. It will be possible to improve.

[Brief description of drawings]

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FIG. 1 is an explanatory diagram of data transmission in an embodiment of a data transmission method by a communication processing program according to the present invention.

FIG. 2 is an explanatory diagram showing a configuration of a transmission data buffer used in the embodiment.

FIG. 3 is an explanatory diagram of protocol selection in each layer of the embodiment.

FIG. 4 is an explanatory diagram of data transmission by a conventional communication processing program.

[Explanation of symbols]

 11 buffer management unit 12 protocol management unit 13 communication application 14 layer a 15 layer b 16 layer c 17 hardware

Claims (1)

[Claims] 1. A communication data buffer management method for managing the communication data buffer when transmitting communication data using the communication data buffer by a multi-protocol compatible communication processing program capable of processing a plurality of communication protocols. Yes, at the time of transmitting the communication data, a combination determining step for determining a combination of the communication protocols in advance, an operation step for calculating the total amount of the headers of the communication protocol to be used based on the combination of the communication protocols, and the operation step. And a data buffer using step of using the communication data buffer based on the calculation result of the communication data buffer management method.