[libvirt] [PATCH] Fix threading problems in python bindings
Daniel P. Berrange
berrange at redhat.com
Wed Nov 25 12:06:03 UTC 2009
* libvirt-override.c: Add many missing calls to allow threading
when entering C code, otherwise python blocks & then deadlocks
when we have an async event to dispatch back into python code
---
python/libvirt-override.c | 106 ++++++++++++++++++++++++++++++++++++++++----
1 files changed, 96 insertions(+), 10 deletions(-)
diff --git a/python/libvirt-override.c b/python/libvirt-override.c
index b885190..0f7db9c 100644
--- a/python/libvirt-override.c
+++ b/python/libvirt-override.c
@@ -67,7 +67,10 @@ libvirt_virDomainBlockStats(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) {
return(NULL);
domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain);
+ LIBVIRT_BEGIN_ALLOW_THREADS;
c_retval = virDomainBlockStats(domain, path, &stats, sizeof(stats));
+ LIBVIRT_END_ALLOW_THREADS;
+
if (c_retval < 0)
return VIR_PY_NONE;
@@ -96,7 +99,10 @@ libvirt_virDomainInterfaceStats(PyObject *self ATTRIBUTE_UNUSED, PyObject *args)
return(NULL);
domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain);
+ LIBVIRT_BEGIN_ALLOW_THREADS;
c_retval = virDomainInterfaceStats(domain, path, &stats, sizeof(stats));
+ LIBVIRT_END_ALLOW_THREADS;
+
if (c_retval < 0)
return VIR_PY_NONE;
@@ -128,7 +134,9 @@ libvirt_virDomainGetSchedulerType(PyObject *self ATTRIBUTE_UNUSED,
return(NULL);
domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain);
+ LIBVIRT_BEGIN_ALLOW_THREADS;
c_retval = virDomainGetSchedulerType(domain, &nparams);
+ LIBVIRT_END_ALLOW_THREADS;
if (c_retval == NULL)
return VIR_PY_NONE;
@@ -150,6 +158,7 @@ libvirt_virDomainGetSchedulerParameters(PyObject *self ATTRIBUTE_UNUSED,
virDomainPtr domain;
PyObject *pyobj_domain, *info;
char *c_retval;
+ int i_retval;
int nparams, i;
virSchedParameterPtr params;
@@ -158,7 +167,10 @@ libvirt_virDomainGetSchedulerParameters(PyObject *self ATTRIBUTE_UNUSED,
return(NULL);
domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain);
+ LIBVIRT_BEGIN_ALLOW_THREADS;
c_retval = virDomainGetSchedulerType(domain, &nparams);
+ LIBVIRT_END_ALLOW_THREADS;
+
if (c_retval == NULL)
return VIR_PY_NONE;
free(c_retval);
@@ -166,7 +178,11 @@ libvirt_virDomainGetSchedulerParameters(PyObject *self ATTRIBUTE_UNUSED,
if ((params = malloc(sizeof(*params)*nparams)) == NULL)
return VIR_PY_NONE;
- if (virDomainGetSchedulerParameters(domain, params, &nparams) < 0) {
+ LIBVIRT_BEGIN_ALLOW_THREADS;
+ i_retval = virDomainGetSchedulerParameters(domain, params, &nparams);
+ LIBVIRT_END_ALLOW_THREADS;
+
+ if (i_retval < 0) {
free(params);
return VIR_PY_NONE;
}
@@ -223,6 +239,7 @@ libvirt_virDomainSetSchedulerParameters(PyObject *self ATTRIBUTE_UNUSED,
virDomainPtr domain;
PyObject *pyobj_domain, *info;
char *c_retval;
+ int i_retval;
int nparams, i;
virSchedParameterPtr params;
@@ -231,7 +248,10 @@ libvirt_virDomainSetSchedulerParameters(PyObject *self ATTRIBUTE_UNUSED,
return(NULL);
domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain);
+ LIBVIRT_BEGIN_ALLOW_THREADS;
c_retval = virDomainGetSchedulerType(domain, &nparams);
+ LIBVIRT_END_ALLOW_THREADS;
+
if (c_retval == NULL)
return VIR_PY_INT_FAIL;
free(c_retval);
@@ -239,7 +259,11 @@ libvirt_virDomainSetSchedulerParameters(PyObject *self ATTRIBUTE_UNUSED,
if ((params = malloc(sizeof(*params)*nparams)) == NULL)
return VIR_PY_INT_FAIL;
- if (virDomainGetSchedulerParameters(domain, params, &nparams) < 0) {
+ LIBVIRT_BEGIN_ALLOW_THREADS;
+ i_retval = virDomainGetSchedulerParameters(domain, params, &nparams);
+ LIBVIRT_END_ALLOW_THREADS;
+
+ if (i_retval < 0) {
free(params);
return VIR_PY_INT_FAIL;
}
@@ -292,7 +316,10 @@ libvirt_virDomainSetSchedulerParameters(PyObject *self ATTRIBUTE_UNUSED,
}
}
- if (virDomainSetSchedulerParameters(domain, params, nparams) < 0) {
+ LIBVIRT_BEGIN_ALLOW_THREADS;
+ i_retval = virDomainSetSchedulerParameters(domain, params, nparams);
+ LIBVIRT_END_ALLOW_THREADS;
+ if (i_retval < 0) {
free(params);
return VIR_PY_INT_FAIL;
}
@@ -311,13 +338,17 @@ libvirt_virDomainGetVcpus(PyObject *self ATTRIBUTE_UNUSED,
virVcpuInfoPtr cpuinfo = NULL;
unsigned char *cpumap = NULL;
int cpumaplen, i;
+ int i_retval;
if (!PyArg_ParseTuple(args, (char *)"O:virDomainGetVcpus",
&pyobj_domain))
return(NULL);
domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain);
- if (virNodeGetInfo(virDomainGetConnect(domain), &nodeinfo) != 0)
+ LIBVIRT_BEGIN_ALLOW_THREADS;
+ i_retval = virNodeGetInfo(virDomainGetConnect(domain), &nodeinfo);
+ LIBVIRT_END_ALLOW_THREADS;
+ if (i_retval < 0)
return VIR_PY_NONE;
if (virDomainGetInfo(domain, &dominfo) != 0)
@@ -330,9 +361,12 @@ libvirt_virDomainGetVcpus(PyObject *self ATTRIBUTE_UNUSED,
if ((cpumap = malloc(dominfo.nrVirtCpu * cpumaplen)) == NULL)
goto cleanup;
- if (virDomainGetVcpus(domain,
- cpuinfo, dominfo.nrVirtCpu,
- cpumap, cpumaplen) < 0)
+ LIBVIRT_BEGIN_ALLOW_THREADS;
+ i_retval = virDomainGetVcpus(domain,
+ cpuinfo, dominfo.nrVirtCpu,
+ cpumap, cpumaplen);
+ LIBVIRT_END_ALLOW_THREADS;
+ if (i_retval < 0)
goto cleanup;
/* convert to a Python tuple of long objects */
@@ -395,13 +429,17 @@ libvirt_virDomainPinVcpu(PyObject *self ATTRIBUTE_UNUSED,
virNodeInfo nodeinfo;
unsigned char *cpumap;
int cpumaplen, i, vcpu;
+ int i_retval;
if (!PyArg_ParseTuple(args, (char *)"OiO:virDomainPinVcpu",
&pyobj_domain, &vcpu, &pycpumap))
return(NULL);
domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain);
- if (virNodeGetInfo(virDomainGetConnect(domain), &nodeinfo) != 0)
+ LIBVIRT_BEGIN_ALLOW_THREADS;
+ i_retval = virNodeGetInfo(virDomainGetConnect(domain), &nodeinfo);
+ LIBVIRT_END_ALLOW_THREADS;
+ if (i_retval < 0)
return VIR_PY_INT_FAIL;
cpumaplen = VIR_CPU_MAPLEN(VIR_NODEINFO_MAXCPUS(nodeinfo));
@@ -418,10 +456,15 @@ libvirt_virDomainPinVcpu(PyObject *self ATTRIBUTE_UNUSED,
VIR_UNUSE_CPU(cpumap, i);
}
- virDomainPinVcpu(domain, vcpu, cpumap, cpumaplen);
+ LIBVIRT_BEGIN_ALLOW_THREADS;
+ i_retval = virDomainPinVcpu(domain, vcpu, cpumap, cpumaplen);
+ LIBVIRT_END_ALLOW_THREADS;
Py_DECREF(truth);
free(cpumap);
+ if (i_retval < 0)
+ return VIR_PY_INT_FAIL;
+
return VIR_PY_INT_SUCCESS;
}
@@ -471,7 +514,10 @@ libvirt_virConnGetLastError(PyObject *self ATTRIBUTE_UNUSED, PyObject *args)
return(NULL);
conn = (virConnectPtr) PyvirConnect_Get(pyobj_conn);
- if ((err = virConnGetLastError(conn)) == NULL)
+ LIBVIRT_BEGIN_ALLOW_THREADS;
+ err = virConnGetLastError(conn);
+ LIBVIRT_END_ALLOW_THREADS;
+ if (err == NULL)
return VIR_PY_NONE;
if ((info = PyTuple_New(9)) == NULL)
@@ -793,7 +839,9 @@ libvirt_virConnectListDefinedDomains(PyObject *self ATTRIBUTE_UNUSED,
return(NULL);
conn = (virConnectPtr) PyvirConnect_Get(pyobj_conn);
+ LIBVIRT_BEGIN_ALLOW_THREADS;
c_retval = virConnectNumOfDefinedDomains(conn);
+ LIBVIRT_END_ALLOW_THREADS;
if (c_retval < 0)
return VIR_PY_NONE;
@@ -801,7 +849,9 @@ libvirt_virConnectListDefinedDomains(PyObject *self ATTRIBUTE_UNUSED,
names = malloc(sizeof(*names) * c_retval);
if (!names)
return VIR_PY_NONE;
+ LIBVIRT_BEGIN_ALLOW_THREADS;
c_retval = virConnectListDefinedDomains(conn, names, c_retval);
+ LIBVIRT_END_ALLOW_THREADS;
if (c_retval < 0) {
free(names);
return VIR_PY_NONE;
@@ -966,7 +1016,9 @@ libvirt_virConnectListNetworks(PyObject *self ATTRIBUTE_UNUSED,
return(NULL);
conn = (virConnectPtr) PyvirConnect_Get(pyobj_conn);
+ LIBVIRT_BEGIN_ALLOW_THREADS;
c_retval = virConnectNumOfNetworks(conn);
+ LIBVIRT_END_ALLOW_THREADS;
if (c_retval < 0)
return VIR_PY_NONE;
@@ -974,7 +1026,9 @@ libvirt_virConnectListNetworks(PyObject *self ATTRIBUTE_UNUSED,
names = malloc(sizeof(*names) * c_retval);
if (!names)
return VIR_PY_NONE;
+ LIBVIRT_BEGIN_ALLOW_THREADS;
c_retval = virConnectListNetworks(conn, names, c_retval);
+ LIBVIRT_END_ALLOW_THREADS;
if (c_retval < 0) {
free(names);
return VIR_PY_NONE;
@@ -1008,7 +1062,9 @@ libvirt_virConnectListDefinedNetworks(PyObject *self ATTRIBUTE_UNUSED,
return(NULL);
conn = (virConnectPtr) PyvirConnect_Get(pyobj_conn);
+ LIBVIRT_BEGIN_ALLOW_THREADS;
c_retval = virConnectNumOfDefinedNetworks(conn);
+ LIBVIRT_END_ALLOW_THREADS;
if (c_retval < 0)
return VIR_PY_NONE;
@@ -1016,7 +1072,9 @@ libvirt_virConnectListDefinedNetworks(PyObject *self ATTRIBUTE_UNUSED,
names = malloc(sizeof(*names) * c_retval);
if (!names)
return VIR_PY_NONE;
+ LIBVIRT_BEGIN_ALLOW_THREADS;
c_retval = virConnectListDefinedNetworks(conn, names, c_retval);
+ LIBVIRT_END_ALLOW_THREADS;
if (c_retval < 0) {
free(names);
return VIR_PY_NONE;
@@ -1211,7 +1269,9 @@ libvirt_virConnectListStoragePools(PyObject *self ATTRIBUTE_UNUSED,
return(NULL);
conn = (virConnectPtr) PyvirConnect_Get(pyobj_conn);
+ LIBVIRT_BEGIN_ALLOW_THREADS;
c_retval = virConnectNumOfStoragePools(conn);
+ LIBVIRT_END_ALLOW_THREADS;
if (c_retval < 0)
return VIR_PY_NONE;
@@ -1219,7 +1279,9 @@ libvirt_virConnectListStoragePools(PyObject *self ATTRIBUTE_UNUSED,
names = malloc(sizeof(*names) * c_retval);
if (!names)
return VIR_PY_NONE;
+ LIBVIRT_BEGIN_ALLOW_THREADS;
c_retval = virConnectListStoragePools(conn, names, c_retval);
+ LIBVIRT_END_ALLOW_THREADS;
if (c_retval < 0) {
free(names);
return VIR_PY_NONE;
@@ -1261,7 +1323,9 @@ libvirt_virConnectListDefinedStoragePools(PyObject *self ATTRIBUTE_UNUSED,
return(NULL);
conn = (virConnectPtr) PyvirConnect_Get(pyobj_conn);
+ LIBVIRT_BEGIN_ALLOW_THREADS;
c_retval = virConnectNumOfDefinedStoragePools(conn);
+ LIBVIRT_END_ALLOW_THREADS;
if (c_retval < 0)
return VIR_PY_NONE;
@@ -1269,7 +1333,9 @@ libvirt_virConnectListDefinedStoragePools(PyObject *self ATTRIBUTE_UNUSED,
names = malloc(sizeof(*names) * c_retval);
if (!names)
return VIR_PY_NONE;
+ LIBVIRT_BEGIN_ALLOW_THREADS;
c_retval = virConnectListDefinedStoragePools(conn, names, c_retval);
+ LIBVIRT_END_ALLOW_THREADS;
if (c_retval < 0) {
free(names);
return VIR_PY_NONE;
@@ -1311,7 +1377,9 @@ libvirt_virStoragePoolListVolumes(PyObject *self ATTRIBUTE_UNUSED,
return(NULL);
pool = (virStoragePoolPtr) PyvirStoragePool_Get(pyobj_pool);
+ LIBVIRT_BEGIN_ALLOW_THREADS;
c_retval = virStoragePoolNumOfVolumes(pool);
+ LIBVIRT_END_ALLOW_THREADS;
if (c_retval < 0)
return VIR_PY_NONE;
@@ -1319,7 +1387,9 @@ libvirt_virStoragePoolListVolumes(PyObject *self ATTRIBUTE_UNUSED,
names = malloc(sizeof(*names) * c_retval);
if (!names)
return VIR_PY_NONE;
+ LIBVIRT_BEGIN_ALLOW_THREADS;
c_retval = virStoragePoolListVolumes(pool, names, c_retval);
+ LIBVIRT_END_ALLOW_THREADS;
if (c_retval < 0) {
free(names);
return VIR_PY_NONE;
@@ -1520,7 +1590,9 @@ libvirt_virNodeListDevices(PyObject *self ATTRIBUTE_UNUSED,
return(NULL);
conn = (virConnectPtr) PyvirConnect_Get(pyobj_conn);
+ LIBVIRT_BEGIN_ALLOW_THREADS;
c_retval = virNodeNumOfDevices(conn, cap, flags);
+ LIBVIRT_END_ALLOW_THREADS;
if (c_retval < 0)
return VIR_PY_NONE;
@@ -1528,7 +1600,9 @@ libvirt_virNodeListDevices(PyObject *self ATTRIBUTE_UNUSED,
names = malloc(sizeof(*names) * c_retval);
if (!names)
return VIR_PY_NONE;
+ LIBVIRT_BEGIN_ALLOW_THREADS;
c_retval = virNodeListDevices(conn, cap, names, c_retval, flags);
+ LIBVIRT_END_ALLOW_THREADS;
if (c_retval < 0) {
free(names);
return VIR_PY_NONE;
@@ -1560,7 +1634,9 @@ libvirt_virNodeDeviceListCaps(PyObject *self ATTRIBUTE_UNUSED,
return(NULL);
dev = (virNodeDevicePtr) PyvirNodeDevice_Get(pyobj_dev);
+ LIBVIRT_BEGIN_ALLOW_THREADS;
c_retval = virNodeDeviceNumOfCaps(dev);
+ LIBVIRT_END_ALLOW_THREADS;
if (c_retval < 0)
return VIR_PY_NONE;
@@ -1568,7 +1644,9 @@ libvirt_virNodeDeviceListCaps(PyObject *self ATTRIBUTE_UNUSED,
names = malloc(sizeof(*names) * c_retval);
if (!names)
return VIR_PY_NONE;
+ LIBVIRT_BEGIN_ALLOW_THREADS;
c_retval = virNodeDeviceListCaps(dev, names, c_retval);
+ LIBVIRT_END_ALLOW_THREADS;
if (c_retval < 0) {
free(names);
return VIR_PY_NONE;
@@ -1775,7 +1853,9 @@ libvirt_virConnectListInterfaces(PyObject *self ATTRIBUTE_UNUSED,
return(NULL);
conn = (virConnectPtr) PyvirConnect_Get(pyobj_conn);
+ LIBVIRT_BEGIN_ALLOW_THREADS;
c_retval = virConnectNumOfInterfaces(conn);
+ LIBVIRT_END_ALLOW_THREADS;
if (c_retval < 0)
return VIR_PY_NONE;
@@ -1783,7 +1863,9 @@ libvirt_virConnectListInterfaces(PyObject *self ATTRIBUTE_UNUSED,
names = malloc(sizeof(*names) * c_retval);
if (!names)
return VIR_PY_NONE;
+ LIBVIRT_BEGIN_ALLOW_THREADS;
c_retval = virConnectListInterfaces(conn, names, c_retval);
+ LIBVIRT_END_ALLOW_THREADS;
if (c_retval < 0) {
free(names);
return VIR_PY_NONE;
@@ -1826,7 +1908,9 @@ libvirt_virConnectListDefinedInterfaces(PyObject *self ATTRIBUTE_UNUSED,
return(NULL);
conn = (virConnectPtr) PyvirConnect_Get(pyobj_conn);
+ LIBVIRT_BEGIN_ALLOW_THREADS;
c_retval = virConnectNumOfDefinedInterfaces(conn);
+ LIBVIRT_END_ALLOW_THREADS;
if (c_retval < 0)
return VIR_PY_NONE;
@@ -1834,7 +1918,9 @@ libvirt_virConnectListDefinedInterfaces(PyObject *self ATTRIBUTE_UNUSED,
names = malloc(sizeof(*names) * c_retval);
if (!names)
return VIR_PY_NONE;
+ LIBVIRT_BEGIN_ALLOW_THREADS;
c_retval = virConnectListDefinedInterfaces(conn, names, c_retval);
+ LIBVIRT_END_ALLOW_THREADS;
if (c_retval < 0) {
free(names);
return VIR_PY_NONE;
--
1.6.5.2
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