CN103279360A

CN103279360A - Method for obtaining memory information through Linux command based program

Info

Publication number: CN103279360A
Application number: CN2013102290998A
Authority: CN
Inventors: 张世刚; 王渭巍
Original assignee: Inspur Electronic Information Industry Co Ltd
Current assignee: Inspur Electronic Information Industry Co Ltd
Priority date: 2013-06-09
Filing date: 2013-06-09
Publication date: 2013-09-04

Abstract

The invention provides a method for obtaining memory information through a Linux command based program. The memory information refers to memory total, used, free, shared, buffers or cached under a Linux system and the unit is MB (Mega Byte). According to the method for obtaining the memory information through the Linux command based program, a compiled dynamic link library can be provided for the Java to invoke through JNI (Java Native Interface); execution of the Linux commands is controlled through the C++ to obtain the memory information under the Linux system; and the memory information is obtained by directly inputting commands to a server in a traditional method. The method for obtaining the memory information through the Linux command based program has the advantages of being capable of supporting equipment monitoring software, avoiding obtaining required information by repeatedly inputting the commands and accordingly being capable of improving management efficiency of the server.

Description

A kind of method of obtaining memory information based on the program of Linux order of using

Technical field

The present invention relates to computer application field, specifically a kind of method of obtaining memory information based on the program of Linux order of using.

Background technology

Along with the expansion of computer cluster scale, traditional management method to server is more and more inapplicable, needs a cover cluster monitoring management software to come huge computer cluster is managed, to improve efficiency of managing and to reduce handling cost.The present invention, the method that provides support for the cluster monitoring management software exactly.

Traditional method is directly to server, and input command obtains institute's memory information

(total, used, free, shared, buffers, cached), this method is a kind of method that obtains memory information by program, can be used for supporting some monitoring of tools softwares, avoid the input command of repetition to obtain the information that needs, thereby can improve the efficiency of management of server.

Summary of the invention

The purpose of this invention is to provide a kind of method of obtaining memory information based on the program of LINUX order of using.

The objective of the invention is to realize in the following manner, concrete implementation step is as follows:

1) obtains the memory information of server with the Linux order, and be saved in the temporary file;

char?cmdSync[256]?=?"free?-m?|?grep?Mem?>?";

char?fileSync[]?=?"/tmp/memlc-XXXXXX";

Imkstemp (fileSync); // establishment temporary file

Strcat (cmdSync, fileSync); // splicing character string

System (cmdSync); // fill order;

2) carry out the I/O stream that Linux orders temporary file in the foundation step 1 with the C++ code, obtain the total of internal memory, used, free, shared, buffers, cached information, and be saved in the data structure body, carry out data encapsulation;

3) carry out the Linux order with the C++ code, the memory information that command execution is obtained is saved in the temporary file;

Ifstream file (fileSync); // obtain the I/O stream of temporary file

while?(?file.getline(?pszTmpln,?SIZELN?)?){

sscanf(pszTmpln,?"%s?%s?%s?%s?%s?%s?%s",?pszTmp,pszTmp,info1,?info2,?info3,?info4,?pszTmp);

}

These data that 4) will obtain are saved in set vector＜vector＜string〉〉 in.

The invention has the beneficial effects as follows:

This memory information refers to memory amount (total), use amount (used), idle amount (free), shared amount (shared), the buffer memory (buffers/cached) under the linux system, unit is MB, and the dynamic link library that is compiled into this method can call by JNI for Java.This method is carried out the Linux order with the C++ code, will obtain server memory information with the Linux order, and be saved in the temporary file.Create one respectively about the I/O stream of temporary file with the C++ code again, and the acquisition memory information (be total, used, free, shared, buffers, cached, unit: MB).

Embodiment

This method realizes by following steps:

char?cmdSync[256]?=?"free?-m?|?grep?Mem?>?";

char?fileSync[]?=?"/tmp/memlc-XXXXXX";

Imkstemp (fileSync); // establishment temporary file

Strcat (cmdSync, fileSync); // splicing character string

System (cmdSync); // fill order

2) carry out the I/O stream that Linux orders temporary file in the foundation step 1 with the C++ code, obtain memory information (being total, used, free, shared, buffers, cached, the MB of unit), and be saved in the data structure body, carry out data encapsulation;

Ifstream file (fileSync); // obtain the I/O stream of temporary file

while?(?file.getline(?pszTmpln,?SIZELN?)?){

}

Except the described technical characterictic of instructions, be the known technology of those skilled in the art.

Claims

1. one kind with the method for obtaining memory information based on the program of Linux order, it is characterized in that concrete implementation step is as follows:

char?cmdSync[256]?=?"free?-m?|?grep?Mem?>?";

char?fileSync[]?=?"/tmp/memlc-XXXXXX";

Imkstemp (fileSync); // establishment temporary file

Strcat (cmdSync, fileSync); // splicing character string

System (cmdSync); // fill order;

Ifstream file (fileSync); // obtain the I/O stream of temporary file

while?(?file.getline(?pszTmpln,?SIZELN?)?){

}