[libvirt] [libvirt-python PATCH 18/23] improve usage of cleanup paths
Pavel Hrdina
phrdina at redhat.com
Thu Sep 24 14:01:55 UTC 2015
This removes several code duplicates and also some unusual code structures.
Signed-off-by: Pavel Hrdina <phrdina at redhat.com>
---
libvirt-override.c | 159 +++++++++++++++++++++++------------------------------
1 file changed, 68 insertions(+), 91 deletions(-)
diff --git a/libvirt-override.c b/libvirt-override.c
index 8afe7d7..205f0dd 100644
--- a/libvirt-override.c
+++ b/libvirt-override.c
@@ -439,13 +439,13 @@ libvirt_virDomainGetSchedulerType(PyObject *self ATTRIBUTE_UNUSED,
return VIR_PY_NONE;
/* convert to a Python tuple of long objects */
- if ((info = PyTuple_New(2)) == NULL) {
- VIR_FREE(c_retval);
- return NULL;
- }
+ if ((info = PyTuple_New(2)) == NULL)
+ goto cleanup;
PyTuple_SetItem(info, 0, libvirt_constcharPtrWrap(c_retval));
PyTuple_SetItem(info, 1, libvirt_intWrap((long)nparams));
+
+ cleanup:
VIR_FREE(c_retval);
return info;
}
@@ -2401,7 +2401,6 @@ libvirt_virDomainSnapshotListNames(PyObject *self ATTRIBUTE_UNUSED,
Py_CLEAR(py_retval);
goto cleanup;
}
- VIR_FREE(names[i]);
}
cleanup:
@@ -3245,8 +3244,8 @@ libvirt_virNodeGetCellsFreeMemory(PyObject *self ATTRIBUTE_UNUSED,
LIBVIRT_END_ALLOW_THREADS;
if (c_retval < 0) {
- VIR_FREE(freeMems);
- return VIR_PY_NONE;
+ py_retval = VIR_PY_NONE;
+ goto cleanup;
}
if ((py_retval = PyList_New(c_retval)) == NULL)
@@ -3425,24 +3424,19 @@ libvirt_virConnectListStoragePools(PyObject *self ATTRIBUTE_UNUSED,
return VIR_PY_NONE;
}
}
- py_retval = PyList_New(c_retval);
- if (py_retval == NULL) {
- if (names) {
- for (i = 0; i < c_retval; i++)
- VIR_FREE(names[i]);
- VIR_FREE(names);
- }
- return NULL;
- }
+
+ if ((py_retval = PyList_New(c_retval)) == NULL)
+ goto cleanup;
if (names) {
- for (i = 0; i < c_retval; i++) {
+ for (i = 0; i < c_retval; i++)
PyList_SetItem(py_retval, i, libvirt_constcharPtrWrap(names[i]));
- VIR_FREE(names[i]);
- }
- VIR_FREE(names);
}
+ cleanup:
+ for (i = 0; i < c_retval; i++)
+ VIR_FREE(names[i]);
+ VIR_FREE(names);
return py_retval;
}
@@ -3480,24 +3474,20 @@ libvirt_virConnectListDefinedStoragePools(PyObject *self ATTRIBUTE_UNUSED,
return VIR_PY_NONE;
}
}
- py_retval = PyList_New(c_retval);
- if (py_retval == NULL) {
- if (names) {
- for (i = 0; i < c_retval; i++)
- VIR_FREE(names[i]);
- VIR_FREE(names);
- }
- return NULL;
- }
+
+ if ((py_retval = PyList_New(c_retval)) == NULL)
+ goto cleanup;
if (names) {
- for (i = 0; i < c_retval; i++) {
+ for (i = 0; i < c_retval; i++)
PyList_SetItem(py_retval, i, libvirt_constcharPtrWrap(names[i]));
- VIR_FREE(names[i]);
- }
- VIR_FREE(names);
}
+ cleanup:
+ for (i = 0; i < c_retval; i++)
+ VIR_FREE(names[i]);
+ VIR_FREE(names);
+
return py_retval;
}
@@ -3579,28 +3569,24 @@ libvirt_virStoragePoolListVolumes(PyObject *self ATTRIBUTE_UNUSED,
c_retval = virStoragePoolListVolumes(pool, names, c_retval);
LIBVIRT_END_ALLOW_THREADS;
if (c_retval < 0) {
- VIR_FREE(names);
- return VIR_PY_NONE;
+ py_retval = VIR_PY_NONE;
+ goto cleanup;
}
}
- py_retval = PyList_New(c_retval);
- if (py_retval == NULL) {
- if (names) {
- for (i = 0; i < c_retval; i++)
- VIR_FREE(names[i]);
- VIR_FREE(names);
- }
- return NULL;
- }
+
+ if ((py_retval = PyList_New(c_retval)) == NULL)
+ goto cleanup;
if (names) {
- for (i = 0; i < c_retval; i++) {
+ for (i = 0; i < c_retval; i++)
PyList_SetItem(py_retval, i, libvirt_constcharPtrWrap(names[i]));
- VIR_FREE(names[i]);
- }
- VIR_FREE(names);
}
+ cleanup:
+ for (i = 0; i < c_retval; i++)
+ VIR_FREE(names[i]);
+ VIR_FREE(names);
+
return py_retval;
}
@@ -3850,9 +3836,10 @@ libvirt_virNodeListDevices(PyObject *self ATTRIBUTE_UNUSED,
LIBVIRT_BEGIN_ALLOW_THREADS;
c_retval = virNodeListDevices(conn, cap, names, c_retval, flags);
LIBVIRT_END_ALLOW_THREADS;
+
if (c_retval < 0) {
- VIR_FREE(names);
- return VIR_PY_NONE;
+ py_retval = VIR_PY_NONE;
+ goto cleanup;
}
}
@@ -3947,8 +3934,8 @@ libvirt_virNodeDeviceListCaps(PyObject *self ATTRIBUTE_UNUSED,
c_retval = virNodeDeviceListCaps(dev, names, c_retval);
LIBVIRT_END_ALLOW_THREADS;
if (c_retval < 0) {
- VIR_FREE(names);
- return VIR_PY_NONE;
+ py_retval = VIR_PY_NONE;
+ goto cleanup;
}
}
@@ -4072,8 +4059,8 @@ libvirt_virConnectListSecrets(PyObject *self ATTRIBUTE_UNUSED,
c_retval = virConnectListSecrets(conn, uuids, c_retval);
LIBVIRT_END_ALLOW_THREADS;
if (c_retval < 0) {
- VIR_FREE(uuids);
- return VIR_PY_NONE;
+ py_retval = VIR_PY_NONE;
+ goto cleanup;
}
}
@@ -4404,24 +4391,19 @@ libvirt_virConnectListInterfaces(PyObject *self ATTRIBUTE_UNUSED,
return VIR_PY_NONE;
}
}
- py_retval = PyList_New(c_retval);
- if (py_retval == NULL) {
- if (names) {
- for (i = 0; i < c_retval; i++)
- VIR_FREE(names[i]);
- VIR_FREE(names);
- }
- return NULL;
- }
+
+ if ((py_retval = PyList_New(c_retval)) == NULL)
+ goto cleanup;
if (names) {
- for (i = 0; i < c_retval; i++) {
+ for (i = 0; i < c_retval; i++)
PyList_SetItem(py_retval, i, libvirt_constcharPtrWrap(names[i]));
- VIR_FREE(names[i]);
- }
- VIR_FREE(names);
}
+ cleanup:
+ for (i = 0; i < c_retval; i++)
+ VIR_FREE(names[i]);
+ VIR_FREE(names);
return py_retval;
}
@@ -4461,24 +4443,19 @@ libvirt_virConnectListDefinedInterfaces(PyObject *self ATTRIBUTE_UNUSED,
return VIR_PY_NONE;
}
}
- py_retval = PyList_New(c_retval);
- if (py_retval == NULL) {
- if (names) {
- for (i = 0; i < c_retval; i++)
- VIR_FREE(names[i]);
- VIR_FREE(names);
- }
- return NULL;
- }
+
+ if ((py_retval = PyList_New(c_retval)) == NULL)
+ goto cleanup;
if (names) {
- for (i = 0; i < c_retval; i++) {
+ for (i = 0; i < c_retval; i++)
PyList_SetItem(py_retval, i, libvirt_constcharPtrWrap(names[i]));
- VIR_FREE(names[i]);
- }
- VIR_FREE(names);
}
+ cleanup:
+ for (i = 0; i < c_retval; i++)
+ VIR_FREE(names[i]);
+ VIR_FREE(names);
return py_retval;
}
@@ -8459,17 +8436,19 @@ libvirt_virDomainGetFSInfo(PyObject *self ATTRIBUTE_UNUSED,
/* convert to a Python list */
if ((py_retval = PyList_New(c_retval)) == NULL)
- goto cleanup;
+ goto error;
for (i = 0; i < c_retval; i++) {
virDomainFSInfoPtr fs = fsinfo[i];
PyObject *info, *alias;
if (fs == NULL)
- goto cleanup;
+ goto error;
+
info = PyTuple_New(4);
if (info == NULL)
- goto cleanup;
+ goto error;
+
PyList_SetItem(py_retval, i, info);
PyTuple_SetItem(info, 0, libvirt_constcharPtrWrap(fs->mountpoint));
@@ -8478,27 +8457,25 @@ libvirt_virDomainGetFSInfo(PyObject *self ATTRIBUTE_UNUSED,
alias = PyList_New(0);
if (alias == NULL)
- goto cleanup;
+ goto error;
PyTuple_SetItem(info, 3, alias);
for (j = 0; j < fs->ndevAlias; j++)
if (PyList_Append(alias,
libvirt_constcharPtrWrap(fs->devAlias[j])) < 0)
- goto cleanup;
+ goto error;
}
+ cleanup:
for (i = 0; i < c_retval; i++)
virDomainFSInfoFree(fsinfo[i]);
VIR_FREE(fsinfo);
return py_retval;
- cleanup:
- for (i = 0; i < c_retval; i++)
- virDomainFSInfoFree(fsinfo[i]);
- VIR_FREE(fsinfo);
- Py_XDECREF(py_retval);
- return NULL;
+ error:
+ Py_CLEAR(py_retval);
+ goto cleanup;
}
#endif /* LIBVIR_CHECK_VERSION(1, 2, 11) */
--
2.5.3
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