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#include <stdio.h>
#include <stdlib.h>
#include <libvirt/libvirt-admin.h>
int main(int argc, char **argv)
{
int ret = -1;
virAdmConnectPtr conn = NULL;
virAdmServerPtr srv = NULL; /* which server to work with */
virTypedParameterPtr params = NULL;
int nparams = 0;
int maxparams = 0;
ssize_t i;
if (argc != 2) {
fprintf(stderr, "One argument specifying the server which to work "
"with is expected\n");
return -1;
}
/* first, open a connection to the daemon */
if (!(conn = virAdmConnectOpen(NULL, 0)))
goto cleanup;
/* a server handle is necessary before any API regarding threadpool
* parameters can be issued
*/
if (!(srv = virAdmConnectLookupServer(conn, argv[1], 0)))
goto cleanup;
/* get the current threadpool parameters */
if (virAdmServerGetThreadPoolParameters(srv, ¶ms, &nparams, 0) < 0)
goto cleanup;
for (i = 0; i < nparams; i++)
printf("%-15s: %d\n", params[i].field, params[i].value.ui);
virTypedParamsFree(params, nparams);
params = NULL;
nparams = 0;
/* let's set minWorkers to 10, maxWorkers to 15 and prioWorkers to 10 */
if (virTypedParamsAddUInt(¶ms, &nparams, &maxparams,
VIR_THREADPOOL_WORKERS_MIN, 10) < 0 ||
virTypedParamsAddUInt(¶ms, &nparams, &maxparams,
VIR_THREADPOOL_WORKERS_MAX, 15) < 0 ||
virTypedParamsAddUInt(¶ms, &nparams, &maxparams,
VIR_THREADPOOL_WORKERS_PRIORITY, 10) < 0)
goto cleanup;
/* now, change the threadpool settings to some different values */
if (virAdmServerSetThreadPoolParameters(srv, params, nparams, 0) < 0)
goto cleanup;
ret = 0;
cleanup:
virTypedParamsFree(params, nparams);
/* Once finished deallocate the server handle and close the connection
* properly, @conn will be deallocated automatically
*/
virAdmServerFree(srv);
virAdmConnectClose(conn);
return ret;
}
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