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virNodeGetCPUMap: Add python binding

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Added a method getCPUMap to virConnect.
It can be used as follows:

import libvirt
import sys
import os

conn = libvirt.openReadOnly(None)
if conn == None:
    print 'Failed to open connection to the hypervisor'
    sys.exit(1)

try:
    (cpus, cpumap, online) = conn.getCPUMap(0)
except:
    print 'Failed to extract the node cpu map information'
    sys.exit(1)

print 'CPUs total %d, online %d' % (cpus, online)
print 'CPU map %s' % str(cpumap)

del conn
print "OK"

sys.exit(0)

Signed-off-by: Viktor Mihajlovski <mihajlov@linux.vnet.ibm.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Viktor Mihajlovski 2012-10-25 16:59:08 +02:00 committed by Eric Blake
parent e3ba67037b
commit 857f116871
2 changed files with 76 additions and 0 deletions
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6
python/libvirt-override-api.xml
View File

@ -542,5 +542,11 @@
<arg name='conn' type='virConnectPtr' info='pointer to the hypervisor connection'/>
<arg name='flags' type='int' info='unused, always pass 0'/>
</function>
<function name='virNodeGetCPUMap' file='python'>
<info>Get node CPU information</info>
<return type='str *' info='(cpunum, cpumap, online) on success, None on error'/>
<arg name='conn' type='virConnectPtr' info='pointer to the hypervisor connection'/>
<arg name='flags' type='int' info='unused, pass 0'/>
</function>
</symbols>
</api>

70
python/libvirt-override.c
View File

@ -6397,6 +6397,75 @@ cleanup:
return ret;
}
static PyObject *
libvirt_virNodeGetCPUMap(PyObject *self ATTRIBUTE_UNUSED,
PyObject *args)
{
virConnectPtr conn;
PyObject *pyobj_conn;
PyObject *ret = NULL;
PyObject *pycpumap = NULL;
PyObject *pyused = NULL;
PyObject *pycpunum = NULL;
PyObject *pyonline = NULL;
int i_retval;
unsigned char *cpumap = NULL;
unsigned int online = 0;
unsigned int flags;
int i;
if (!PyArg_ParseTuple(args, (char *)"Oi:virNodeGetCPUMap",
&pyobj_conn, &flags))
return NULL;
conn = (virConnectPtr) PyvirConnect_Get(pyobj_conn);
LIBVIRT_BEGIN_ALLOW_THREADS;
i_retval = virNodeGetCPUMap(conn, &cpumap, &online, flags);
LIBVIRT_END_ALLOW_THREADS;
if (i_retval < 0)
return VIR_PY_NONE;
if ((ret = PyTuple_New(3)) == NULL)
goto error;
/* 0: number of CPUs */
if ((pycpunum = PyLong_FromLong(i_retval)) == NULL ||
PyTuple_SetItem(ret, 0, pycpunum) < 0)
goto error;
/* 1: CPU map */
if ((pycpumap = PyList_New(i_retval)) == NULL)
goto error;
for (i = 0; i < i_retval; i++) {
if ((pyused = PyBool_FromLong(VIR_CPU_USED(cpumap, i))) == NULL)
goto error;
if (PyList_SetItem(pycpumap, i, pyused) < 0)
goto error;
}
if (PyTuple_SetItem(ret, 1, pycpumap) < 0)
goto error;
/* 2: number of online CPUs */
if ((pyonline = PyLong_FromLong(online)) == NULL ||
PyTuple_SetItem(ret, 2, pyonline) < 0)
goto error;
cleanup:
VIR_FREE(cpumap);
return ret;
error:
Py_XDECREF(ret);
Py_XDECREF(pycpumap);
Py_XDECREF(pyused);
Py_XDECREF(pycpunum);
Py_XDECREF(pyonline);
ret = NULL;
goto cleanup;
}
/************************************************************************
* *
@ -6514,6 +6583,7 @@ static PyMethodDef libvirtMethods[] = {
{(char *) "virDomainGetDiskErrors", libvirt_virDomainGetDiskErrors, METH_VARARGS, NULL},
{(char *) "virNodeGetMemoryParameters", libvirt_virNodeGetMemoryParameters, METH_VARARGS, NULL},
{(char *) "virNodeSetMemoryParameters", libvirt_virNodeSetMemoryParameters, METH_VARARGS, NULL},
{(char *) "virNodeGetCPUMap", libvirt_virNodeGetCPUMap, METH_VARARGS, NULL},
{NULL, NULL, 0, NULL}
};