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python: add virDomainGetCPUStats python binding API

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dom.getCPUStats(True, 0)
      [{'cpu_time': 24699446159L, 'system_time': 10870000000L, 'user_time': 950000000L}]
    dom.getCPUStats(False, 0)
      [{'cpu_time': 8535292289L}, {'cpu_time': 1005395355L}, {'cpu_time': 9351766377L}, {'cpu_time': 5813545649L}]

    *generator.py Add a new naming rule
    *libvirt-override-api.xml The API function description
    *libvirt-override.c Implement it.
This commit is contained in:
Guannan Ren
2012-03-20 12:34:06 +08:00
committed by Laine Stump
parent debe58f6f7
commit 65ef817149
3 changed files with 164 additions and 1 deletions
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147
libvirt-override.c
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@ -377,6 +377,152 @@ cleanup:
return ret;
}
static PyObject *
libvirt_virDomainGetCPUStats(PyObject *self ATTRIBUTE_UNUSED, PyObject *args)
{
virDomainPtr domain;
PyObject *pyobj_domain, *totalbool;
PyObject *cpu, *total;
PyObject *ret = NULL;
PyObject *error = NULL;
int ncpus = -1, start_cpu = 0;
int sumparams = 0, nparams = -1;
int i, i_retval;
unsigned int flags, totalflag;
virTypedParameterPtr params = NULL, cpuparams;
if (!PyArg_ParseTuple(args, (char *)"OOi:virDomainGetCPUStats",
&pyobj_domain, &totalbool, &flags))
return NULL;
domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain);
if (!PyBool_Check(totalbool)) {
PyErr_Format(PyExc_TypeError,
"The \"total\" attribute must be bool");
return NULL;
} else {
/* Hack - Python's definition of Py_True breaks strict
* aliasing rules, so can't directly compare
*/
PyObject *hacktrue = PyBool_FromLong(1);
totalflag = hacktrue == totalbool ? 1 : 0;
Py_DECREF(hacktrue);
}
if ((ret = PyList_New(0)) == NULL)
return NULL;
if (!totalflag) {
LIBVIRT_BEGIN_ALLOW_THREADS;
ncpus = virDomainGetCPUStats(domain, NULL, 0, 0, 0, flags);
LIBVIRT_END_ALLOW_THREADS;
if (ncpus < 0) {
error = VIR_PY_NONE;
goto error;
}
LIBVIRT_BEGIN_ALLOW_THREADS;
nparams = virDomainGetCPUStats(domain, NULL, 0, 0, 1, flags);
LIBVIRT_END_ALLOW_THREADS;
if (nparams < 0) {
error = VIR_PY_NONE;
goto error;
}
sumparams = nparams * MIN(ncpus, 128);
if (VIR_ALLOC_N(params, sumparams) < 0) {
error = PyErr_NoMemory();
goto error;
}
while (ncpus) {
int queried_ncpus = MIN(ncpus, 128);
if (nparams) {
LIBVIRT_BEGIN_ALLOW_THREADS;
i_retval = virDomainGetCPUStats(domain, params,
nparams, start_cpu, queried_ncpus, flags);
LIBVIRT_END_ALLOW_THREADS;
if (i_retval < 0) {
error = VIR_PY_NONE;
goto error;
}
} else {
i_retval = 0;
}
for (i = 0; i < queried_ncpus; i++) {
cpuparams = &params[i * nparams];
if ((cpu = getPyVirTypedParameter(cpuparams, i_retval)) == NULL) {
goto error;
}
if (PyList_Append(ret, cpu) < 0) {
Py_DECREF(cpu);
goto error;
}
Py_DECREF(cpu);
}
start_cpu += queried_ncpus;
ncpus -= queried_ncpus;
virTypedParameterArrayClear(params, sumparams);
}
} else {
LIBVIRT_BEGIN_ALLOW_THREADS;
nparams = virDomainGetCPUStats(domain, NULL, 0, -1, 1, flags);
LIBVIRT_END_ALLOW_THREADS;
if (nparams < 0) {
error = VIR_PY_NONE;
goto error;
}
if (nparams) {
sumparams = nparams;
if (VIR_ALLOC_N(params, nparams) < 0) {
error = PyErr_NoMemory();
goto error;
}
LIBVIRT_BEGIN_ALLOW_THREADS;
i_retval = virDomainGetCPUStats(domain, params, nparams, -1, 1, flags);
LIBVIRT_END_ALLOW_THREADS;
if (i_retval < 0) {
error = VIR_PY_NONE;
goto error;
}
} else {
i_retval = 0;
}
if ((total = getPyVirTypedParameter(params, i_retval)) == NULL) {
goto error;
}
if (PyList_Append(ret, total) < 0) {
Py_DECREF(total);
goto error;
}
Py_DECREF(total);
}
virTypedParameterArrayClear(params, sumparams);
VIR_FREE(params);
return ret;
error:
virTypedParameterArrayClear(params, sumparams);
VIR_FREE(params);
Py_DECREF(ret);
return error;
}
static PyObject *
libvirt_virDomainInterfaceStats(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) {
virDomainPtr domain;
@ -5398,6 +5544,7 @@ static PyMethodDef libvirtMethods[] = {
{(char *) "virNetworkGetAutostart", libvirt_virNetworkGetAutostart, METH_VARARGS, NULL},
{(char *) "virDomainBlockStats", libvirt_virDomainBlockStats, METH_VARARGS, NULL},
{(char *) "virDomainBlockStatsFlags", libvirt_virDomainBlockStatsFlags, METH_VARARGS, NULL},
{(char *) "virDomainGetCPUStats", libvirt_virDomainGetCPUStats, METH_VARARGS, NULL},
{(char *) "virDomainInterfaceStats", libvirt_virDomainInterfaceStats, METH_VARARGS, NULL},
{(char *) "virDomainMemoryStats", libvirt_virDomainMemoryStats, METH_VARARGS, NULL},
{(char *) "virNodeGetCellsFreeMemory", libvirt_virNodeGetCellsFreeMemory, METH_VARARGS, NULL},