On Wed, Apr 25, 2018 at 07:04:25PM +0200, Katerina Koukiou wrote:
> Signed-off-by: Katerina Koukiou <kkoukiou@xxxxxxxxxx>
> ---
> data/org.libvirt.Domain.xml | 6 +++++
> src/domain.c | 63 +++++++++++++++++++++++++++++++++++++++++++++
> 2 files changed, 69 insertions(+)
>
> diff --git a/data/org.libvirt.Domain.xml b/data/org.libvirt.Domain.xml
> index 96b9220..531cdb5 100644
> --- a/data/org.libvirt.Domain.xml
> +++ b/data/org.libvirt.Domain.xml
> @@ -222,6 +222,12 @@
> <arg name="flags" type="u" direction="in"/>
> <arg name="interfaceParameters" type="a{sv}" direction="out"/>
> </method>
> + <method name="GetIOThreadInfo">
> + <annotation name="org.gtk.GDBus.DocString"
> + value="See https://libvirt.org/html/libvirt-libvirt-domain.html#virDomainGetIOThreadInfo"/>
> + <arg name="flags" type="u" direction="in"/>
> + <arg name="ioThreadInfo" type="a(uab)" direction="out"/>
> + </method>
> <method name="GetJobInfo">
> <annotation name="org.gtk.GDBus.DocString"
> value="See https://libvirt.org/html/libvirt-libvirt-domain.html#virDomainGetJobInfo"/>
> diff --git a/src/domain.c b/src/domain.c
> index 76eec1d..e7b4b24 100644
> --- a/src/domain.c
> +++ b/src/domain.c
> @@ -85,6 +85,25 @@ virtDBusDomainFSInfoListClear(virtDBusDomainFSInfoList *info)
> G_DEFINE_AUTO_CLEANUP_CLEAR_FUNC(virtDBusDomainFSInfoList,
> virtDBusDomainFSInfoListClear);
>
> +struct _virtDBusDomainIOThreadInfoList {
> + virDomainIOThreadInfoPtr *info;
> + gint count;
> +};
> +
> +typedef struct _virtDBusDomainIOThreadInfoList virtDBusDomainIOThreadInfoList;
> +
> +static void
> +virtDBusDomainIOThreadInfoListClear(virtDBusDomainIOThreadInfoList *info)
> +{
> + for (gint i = 0; i < info->count; i++)
> + virDomainIOThreadInfoFree(info->info[i]);
> +
> + g_free(info->info);
> +}
> +
> +G_DEFINE_AUTO_CLEANUP_CLEAR_FUNC(virtDBusDomainIOThreadInfoList,
> + virtDBusDomainIOThreadInfoListClear);
> +
> static GVariant *
> virtDBusDomainMemoryStatsToGVariant(virDomainMemoryStatPtr stats,
> gint nr_stats)
> @@ -1218,6 +1237,49 @@ virtDBusDomainGetInterfaceParameters(GVariant *inArgs,
> *outArgs = g_variant_new_tuple(&grecords, 1);
> }
>
> +static void
> +virtDBusDomainGetIOThreadInfo(GVariant *inArgs,
> + GUnixFDList *inFDs G_GNUC_UNUSED,
> + const gchar *objectPath,
> + gpointer userData,
> + GVariant **outArgs,
> + GUnixFDList **outFDs G_GNUC_UNUSED,
> + GError **error)
> +{
> + virtDBusConnect *connect = userData;
> + g_autoptr(virDomain) domain = NULL;
> + g_auto(virtDBusDomainIOThreadInfoList) info = { 0 };
> + GVariantBuilder builder;
> + guint flags;
> + GVariant *gret;
> +
> + g_variant_get(inArgs, "(u)", &flags);
> +
> + domain = virtDBusDomainGetVirDomain(connect, objectPath, error);
> + if (!domain)
> + return;
> +
> + info.count = virDomainGetIOThreadInfo(domain, &info.info, flags);
> + if (info.count < 0)
> + return virtDBusUtilSetLastVirtError(error);
> +
> + g_variant_builder_init(&builder, G_VARIANT_TYPE("a(uab)"));
> +
> + for (gint i = 0; i < info.count; i++) {
> + g_variant_builder_open(&builder, G_VARIANT_TYPE("(uab)"));
> + g_variant_builder_add(&builder, "u", info.info[i]->iothread_id);
> +
> + g_variant_builder_open(&builder, G_VARIANT_TYPE("ab"));
> + for (gint j = 0; j < info.info[i]->cpumaplen; j++)
> + g_variant_builder_add(&builder, "b", info.info[i]->cpumap[j]);
Unfortunately it's not that easy :). The cpumap is unsigned char type
which means it's 8-bit long and each bit represents single CPU.
First we need to get number of host CPUs calling:
ncpus = virNodeGetCPUMap(connect->connection, NULL, NULL, 0);
And then loop over all CPUs and check whether it's set or not using
VIR_CPU_USED macro.
Pavel
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