From 02a0500d22e6318fa1ad58eb7340d579ed61e842 Mon Sep 17 00:00:00 2001
From: Daniel Veillard <veillard@redhat.com>
Date: Tue, 6 Dec 2005 16:12:49 +0000
Subject: [PATCH] * include/libvir.h src/libvir.c src/virsh.c: adding the
 extraction   of the number of virtual CPUs for both interfaces. Daniel

---
 ChangeLog        |  5 +++++
 include/libvir.h |  7 ++++---
 src/libvir.c     | 46 +++++++++++++++++++++++++++++++++++++++++++++-
 src/virsh.c      |  3 ++-
 4 files changed, 56 insertions(+), 5 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index c03566953e..00a140c75f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Tue Dec  6 17:12:52 CET 2005 Daniel Veillard <veillard@redhat.com>
+
+	* include/libvir.h src/libvir.c src/virsh.c: adding the extraction
+	  of the number of virtual CPUs for both interfaces.
+
 Tue Dec  6 14:46:50 CET 2005 Daniel Veillard <veillard@redhat.com>
 
 	* include/libvir.h src/libvir.c src/virsh.c: tweaking of the 
diff --git a/include/libvir.h b/include/libvir.h
index 1105cf7656..ed8a738d94 100644
--- a/include/libvir.h
+++ b/include/libvir.h
@@ -70,9 +70,10 @@ typedef enum {
 typedef struct _virDomainInfo virDomainInfo;
 
 struct _virDomainInfo {
-    unsigned char state;	/* the running state, a virDomainFlags */
-    unsigned long maxMem;	/* the maximum number of bytes allowed */
-    unsigned long memory;	/* the number of bytes used by the domain */
+    unsigned char state;	/* the running state, one of virDomainFlags */
+    unsigned long maxMem;	/* the maximum memory in bytes allowed */
+    unsigned long memory;	/* the memory in bytes used by the domain */
+    unsigned short nrVirtCpu;	/* the number of virtual CPUs for the domain */
 
     /*
      * Informations below are only available to clients with a connection
diff --git a/src/libvir.c b/src/libvir.c
index 07afe83633..27265c8c6a 100644
--- a/src/libvir.c
+++ b/src/libvir.c
@@ -298,6 +298,8 @@ virDomainLookupByName(virConnectPtr conn, const char *name) {
     return(NULL);
 }
 
+#if 0
+/* Not used ATM */
 /**
  * virConnectDoStoreQuery:
  * @conn: pointer to the hypervisor connection
@@ -319,6 +321,34 @@ virConnectDoStoreQuery(virConnectPtr conn, const char *path) {
 
     ret = xs_read(conn->xshandle, t, path, &len);
 
+done:
+    if (t != NULL)
+	xs_transaction_end(conn->xshandle, t, 0);
+    return(ret);
+}
+#endif
+
+/**
+ * virConnectDoStoreList:
+ * @conn: pointer to the hypervisor connection
+ * @path: the absolute path of the directory in the store to list
+ * @nb: OUT pointer to the number of items found
+ *
+ * Internal API querying the Xenstore for a list
+ *
+ * Returns a string which must be freed by the caller or NULL in case of error
+ */
+static char **
+virConnectDoStoreList(virConnectPtr conn, const char *path, unsigned int *nb) {
+    struct xs_transaction_handle* t;
+    char **ret = NULL;
+
+    t = xs_transaction_start(conn->xshandle);
+    if (t == NULL)
+        goto done;
+
+    ret = xs_directory(conn->xshandle, t, path, nb);
+
 done:
     if (t != NULL)
 	xs_transaction_end(conn->xshandle, t, 0);
@@ -542,7 +572,9 @@ virDomainGetInfo(virDomainPtr domain, virDomainInfoPtr info) {
 	return(-1);
     memset(info, 0, sizeof(virDomainInfo));
     if (domain->conn->flags & VIR_CONNECT_RO) {
-        char *tmp;
+        char *tmp, **tmp2;
+	unsigned int nb_vcpus;
+	char request[200];
 
 	tmp = virDomainDoStoreQuery(domain, "running");
 	if (tmp != NULL) {
@@ -561,6 +593,8 @@ virDomainGetInfo(virDomainPtr domain, virDomainInfoPtr info) {
 	    info->memory = 0;
 	    info->maxMem = 0;
 	}
+#if 0
+        /* doesn't seems to work */
 	tmp = virDomainDoStoreQuery(domain, "cpu_time");
 	if (tmp != NULL) {
 	    info->cpuTime = atol(tmp);
@@ -568,6 +602,15 @@ virDomainGetInfo(virDomainPtr domain, virDomainInfoPtr info) {
 	} else {
 	    info->cpuTime = 0;
 	}
+#endif
+        snprintf(request, 199, "/local/domain/%d/cpu", domain->handle);
+	request[199] = 0;
+	tmp2 = virConnectDoStoreList(domain->conn, request, &nb_vcpus);
+	if (tmp2 != NULL) {
+	    info->nrVirtCpu = nb_vcpus;
+	    free(tmp2);
+	}
+
     } else {
         xc_domaininfo_t dominfo;
 
@@ -604,6 +647,7 @@ virDomainGetInfo(virDomainPtr domain, virDomainInfoPtr info) {
 	info->cpuTime = dominfo.cpu_time;
 	info->memory = dominfo.tot_pages * 4096;
 	info->maxMem = dominfo.max_pages * 4096;
+	info->nrVirtCpu = dominfo.nr_online_vcpus;
     }
     return(0);
 }
diff --git a/src/virsh.c b/src/virsh.c
index 6c9705f1c5..f1d17553f2 100644
--- a/src/virsh.c
+++ b/src/virsh.c
@@ -48,11 +48,12 @@ static void printDomain(virDomainPtr dom) {
 	    default:
 	        break;
 	}
+	printf("%d vCPU, ", info.nrVirtCpu);
 	if (info.cpuTime != 0) {
 	    float cpuUsed = info.cpuTime;
 
 	    cpuUsed /= 1000000000;
-	    printf("%.1f s CPU time, ", cpuUsed);
+	    printf("%.1fs time, ", cpuUsed);
 	}
 	mem = info.memory;
 	mem /= 1024 * 1024;
-- 
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