[Libvirt-cim] [PATCH 1 of 2] Add a domain_vcpu_count() function to return the number of active VCPUs for

[Dan Smith]

# HG changeset patch
# User Dan Smith <danms at us.ibm.com>
# Date 1225145197 25200
# Node ID 10bd66c67a6ad4eebe6a0f8dc81db2b4912d5650
# Parent  e043f46f299ec3dd3d1e48e51e57437fa90db136
Add a domain_vcpu_count() function to return the number of active VCPUs for
a given domain.

Signed-off-by: Dan Smith <danms at us.ibm.com>

diff -r e043f46f299e -r 10bd66c67a6a libxkutil/misc_util.c
--- a/libxkutil/misc_util.c	Wed Oct 22 08:28:37 2008 -0700
+++ b/libxkutil/misc_util.c	Mon Oct 27 15:06:37 2008 -0700
@@ -541,6 +541,45 @@
         return result;
 }
 
+int domain_vcpu_count(virDomainPtr dom)
+{
+        virVcpuInfoPtr info = NULL;
+        int max;
+        int count;
+        int actual = 0;
+        int i;
+        virConnectPtr conn = NULL;
+
+        conn = virDomainGetConnect(dom);
+        if (conn == NULL) {
+                CU_DEBUG("Failed to get connection from domain");
+                return -1;
+        }
+
+        max = virConnectGetMaxVcpus(conn, virConnectGetType(conn));
+        if (max <= 0) {
+                CU_DEBUG("Failed to get max vcpu count");
+                return -1;
+        }
+
+        info = calloc(max, sizeof(*info));
+        if (info == NULL) {
+                CU_DEBUG("Failed to allocate %i vcpuinfo structures", max);
+                return -1;
+        }
+
+        count = virDomainGetVcpus(dom, info, max, NULL, 0);
+
+        free(info);
+
+        for (i = 0; i < count; i++) {
+                if (info[i].cpu != -1)
+                        actual++;
+        }
+
+        return actual;
+}
+
 /*
  * Local Variables:
  * mode: C
diff -r e043f46f299e -r 10bd66c67a6a libxkutil/misc_util.h
--- a/libxkutil/misc_util.h	Wed Oct 22 08:28:37 2008 -0700
+++ b/libxkutil/misc_util.h	Mon Oct 27 15:06:37 2008 -0700
@@ -124,6 +124,8 @@
 bool check_refs_pfx_match(const CMPIObjectPath *refa,
                           const CMPIObjectPath *refb);
 
+int domain_vcpu_count(virDomainPtr dom);
+
 #define LIBVIRT_CIM_DEFAULT_MAKEREF()                                   \
         static CMPIInstance* make_ref(const CMPIObjectPath *source_ref, \
                                       const CMPIInstance *target_inst,  \