[libvirt] [PATCH 07/34] conf: Add helper to retrieve bitmap of active vcpus for a definition
In some cases it may be better to have a bitmap representing state of
individual vcpus rather than iterating the definition. The new helper
creates a bitmap representing the state from the domain definition.
---
src/conf/domain_conf.c | 24 ++++++++++++++++++++++++
src/conf/domain_conf.h | 1 +
src/libvirt_private.syms | 1 +
3 files changed, 26 insertions(+)
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index a9706b0..36286d3 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -1374,6 +1374,30 @@ virDomainDefGetVcpus(const virDomainDef *def)
}
+/**
+ * virDomainDefGetVcpumap:
+ * @def: domain definition
+ *
+ * Returns a bitmap representing state of individual vcpus.
+ */
+virBitmapPtr
+virDomainDefGetVcpumap(const virDomainDef *def)
+{
+ virBitmapPtr ret = NULL;
+ size_t i;
+
+ if (!(ret = virBitmapNew(def->maxvcpus)))
+ return NULL;
+
+ for (i = 0; i < def->maxvcpus; i++) {
+ if (def->vcpus[i].online)
+ ignore_value(virBitmapSetBit(ret, i));
+ }
+
+ return ret;
+}
+
+
virDomainVcpuInfoPtr
virDomainDefGetVcpu(virDomainDefPtr def,
unsigned int vcpu)
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 0141009..f15b558 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -2358,6 +2358,7 @@ bool virDomainDefHasVcpusOffline(const virDomainDef *def);
unsigned int virDomainDefGetVcpusMax(const virDomainDef *def);
int virDomainDefSetVcpus(virDomainDefPtr def, unsigned int vcpus);
unsigned int virDomainDefGetVcpus(const virDomainDef *def);
+virBitmapPtr virDomainDefGetVcpumap(const virDomainDef *def);
virDomainVcpuInfoPtr virDomainDefGetVcpu(virDomainDefPtr def, unsigned int vcpu)
ATTRIBUTE_RETURN_CHECK;
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 83f6e2c..e8efdc6 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -217,6 +217,7 @@ virDomainDefGetMemoryActual;
virDomainDefGetMemoryInitial;
virDomainDefGetSecurityLabelDef;
virDomainDefGetVcpu;
+virDomainDefGetVcpumap;
virDomainDefGetVcpus;
virDomainDefGetVcpusMax;
virDomainDefHasDeviceAddress;
--
2.6.2