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node_memory: Expose the APIs to Python bindings

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* python/libvirt-override-api.xml: (Add document to describe
  the APIs).
* python/libvirt-override.c: (Implement the API wrappers manually)
This commit is contained in:
Osier Yang 2012-09-14 22:42:19 +08:00
parent 0e96fa5489
commit 4c4c80df3f
2 changed files with 138 additions and 0 deletions
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13
python/libvirt-override-api.xml
View File

@ -529,5 +529,18 @@
<arg name='domain' type='virDomainPtr' info='a domain object'/>
<arg name='flags' type='unsigned int' info='unused, always pass 0'/>
</function>
<function name='virNodeSetMemoryParameters' file='python'>
<info>Change the node memory tunables</info>
<return type='int' info='-1 in case of error, 0 in case of success.'/>
<arg name='conn' type='virConnectPtr' info='pointer to the hypervisor connection'/>
<arg name='params' type='virTypedParameterPtr' info='pointer to the memory tunable objects'/>
<arg name='flags' type='int' info='unused, always pass 0'/>
</function>
<function name='virNodeGetMemoryParameters' file='python'>
<info>Get the node memory parameters</info>
<return type='str *' info='None in case of error, returns a dictionary of params'/>
<arg name='conn' type='virConnectPtr' info='pointer to the hypervisor connection'/>
<arg name='flags' type='int' info='unused, always pass 0'/>
</function>
</symbols>
</api>

125
python/libvirt-override.c
View File

@ -6146,6 +6146,129 @@ cleanup:
return py_retval;
}
static PyObject *
libvirt_virNodeSetMemoryParameters(PyObject *self ATTRIBUTE_UNUSED,
PyObject *args)
{
virConnectPtr conn;
PyObject *pyobj_conn, *info;
PyObject *ret = NULL;
int i_retval;
int nparams = 0;
Py_ssize_t size = 0;
unsigned int flags;
virTypedParameterPtr params, new_params;
if (!PyArg_ParseTuple(args,
(char *)"OOi:virNodeSetMemoryParameters",
&pyobj_conn, &info, &flags))
return NULL;
conn = (virConnectPtr) PyvirConnect_Get(pyobj_conn);
if ((size = PyDict_Size(info)) < 0)
return NULL;
if (size == 0) {
PyErr_Format(PyExc_LookupError,
"Need non-empty dictionary to set attributes");
return NULL;
}
LIBVIRT_BEGIN_ALLOW_THREADS;
i_retval = virNodeGetMemoryParameters(conn, NULL, &nparams, flags);
LIBVIRT_END_ALLOW_THREADS;
if (i_retval < 0)
return VIR_PY_INT_FAIL;
if (nparams == 0) {
PyErr_Format(PyExc_LookupError,
"no settable attributes");
return NULL;
}
if (VIR_ALLOC_N(params, nparams) < 0)
return PyErr_NoMemory();
LIBVIRT_BEGIN_ALLOW_THREADS;
i_retval = virNodeGetMemoryParameters(conn, params, &nparams, flags);
LIBVIRT_END_ALLOW_THREADS;
if (i_retval < 0) {
ret = VIR_PY_INT_FAIL;
goto cleanup;
}
new_params = setPyVirTypedParameter(info, params, nparams);
if (!new_params)
goto cleanup;
LIBVIRT_BEGIN_ALLOW_THREADS;
i_retval = virNodeSetMemoryParameters(conn, new_params, size, flags);
LIBVIRT_END_ALLOW_THREADS;
if (i_retval < 0) {
ret = VIR_PY_INT_FAIL;
goto cleanup;
}
ret = VIR_PY_INT_SUCCESS;
cleanup:
virTypedParameterArrayClear(params, nparams);
VIR_FREE(params);
VIR_FREE(new_params);
return ret;
}
static PyObject *
libvirt_virNodeGetMemoryParameters(PyObject *self ATTRIBUTE_UNUSED,
PyObject *args)
{
virConnectPtr conn;
PyObject *pyobj_conn;
PyObject *ret = NULL;
int i_retval;
int nparams = 0;
unsigned int flags;
virTypedParameterPtr params;
if (!PyArg_ParseTuple(args, (char *)"Oi:virNodeGetMemoryParameters",
&pyobj_conn, &flags))
return NULL;
conn = (virConnectPtr) PyvirConnect_Get(pyobj_conn);
LIBVIRT_BEGIN_ALLOW_THREADS;
i_retval = virNodeGetMemoryParameters(conn, NULL, &nparams, flags);
LIBVIRT_END_ALLOW_THREADS;
if (i_retval < 0)
return VIR_PY_NONE;
if (!nparams)
return PyDict_New();
if (VIR_ALLOC_N(params, nparams) < 0)
return PyErr_NoMemory();
LIBVIRT_BEGIN_ALLOW_THREADS;
i_retval = virNodeGetMemoryParameters(conn, params, &nparams, flags);
LIBVIRT_END_ALLOW_THREADS;
if (i_retval < 0) {
ret = VIR_PY_NONE;
goto cleanup;
}
ret = getPyVirTypedParameter(params, nparams);
cleanup:
virTypedParameterArrayClear(params, nparams);
VIR_FREE(params);
return ret;
}
/************************************************************************
* *
* The registration stuff *
@ -6260,6 +6383,8 @@ static PyMethodDef libvirtMethods[] = {
{(char *) "virDomainBlockPeek", libvirt_virDomainBlockPeek, METH_VARARGS, NULL},
{(char *) "virDomainMemoryPeek", libvirt_virDomainMemoryPeek, METH_VARARGS, NULL},
{(char *) "virDomainGetDiskErrors", libvirt_virDomainGetDiskErrors, METH_VARARGS, NULL},
{(char *) "virNodeGetMemoryParameters", libvirt_virNodeGetMemoryParameters, METH_VARARGS, NULL},
{(char *) "virNodeSetMemoryParameters", libvirt_virNodeSetMemoryParameters, METH_VARARGS, NULL},
{NULL, NULL, 0, NULL}
};