Hi,

I am using libvirt api to create an app, I am facing a problem.

I can connect to connection object 20 number of times in programm after that it gives connection object null.

Here is the sample code.

 

Normally code should run 1000 times but it only runs 20 times

Filename: list.cpp

 

#include<pthread.h>

#include<stdlib.h>

#include<stdio.h>

#include<malloc.h>

#include <iostream>

#include<string.h>

#include <libvirt/libvirt.h>

#include <libvirt/virterror.h>

static int count;

    static void customErrorFunc(void *userdata, virErrorPtr err)

    {

    }

 

int main()

{

    virConnectPtr conn;

 

  for ( int i=0; i< 1000;i++)

  {

     conn = virConnectOpen("qemu:///system");

     if (conn == NULL) {

        fprintf(stderr, "Failed to open connection to qemu:///system\n");

        printf("Failed to open connection to qemu:///system\n");

        virConnectClose(conn);

        return NULL;

        }

        printf("Hello %d\n",i);

        virError err;

        virSetErrorFunc(NULL, customErrorFunc);

        int j;

        int numDomains1,numDomains2,numDomains;

        int *activeDomains;

        numDomains1 = virConnectNumOfDomains(conn);

        activeDomains = (int*)malloc(sizeof(int) * numDomains1);

        numDomains1 = virConnectListDomains(conn, activeDomains, numDomains1);

        for (int j = 0 ; j < numDomains1 ; j++)

        {

                virDomainPtr dom;

                dom = virDomainLookupByID(conn,activeDomains[j]);

                free(dom);

        }

        free(activeDomains);

        count--;

        virConnectClose(conn);

   }

}

 

 

Output:

Hello 0

Hello 1

Hello 2

Hello 3

Hello 4

Hello 5

Hello 6

Hello 7

Hello 8

Hello 9

Hello 10

Hello 11

Hello 12

Hello 13

Hello 14

Hello 15

Hello 16

Hello 17

Hello 18

Hello 19

Failed to open connection to qemu:///system

Failed to open connection to qemu:///system

 

 

Can any one tell me where I am going wrong.

Regards,

Pankaj Rawat

NECHCL ST

 

DISCLAIMER:

-----------------------------------------------------------------------------------------------------------------------

The contents of this e-mail and any attachment(s) are confidential and
intended

for the named recipient(s) only. 

It shall not attach any liability on the originator or NECHCL or its

affiliates. Any views or opinions presented in 

this email are solely those of the author and may not necessarily reflect the

opinions of NECHCL or its affiliates. 

Any form of reproduction, dissemination, copying, disclosure, modification,

distribution and / or publication of 

this message without the prior written consent of the author of this e-mail is

strictly prohibited. If you have 

received this email in error please delete it and notify the sender

immediately. .

-----------------------------------------------------------------------------------------------------------------------