[libvirt] [PATCH] xen: eliminate remaining uses of virDomainCpuSetParse

[Laine Stump]

The final patch in Hu Tao's series to enhance virBitmap actually
removes virDomainCpuSetParse and virDomainCpuSetFormat as "no longer
used", and the rest of the series hadn't taken care of two uses of
virDomainCpuSetParse in the xen code.

This patch replaces those with appropriate virBitmap functions. It
should be pushed prior to the patch removing virDomainCpuSetParse.
---
 src/xen/xen_driver.c    | 14 ++++++++------
 src/xen/xend_internal.c | 24 +++++++++++++-----------
 2 files changed, 21 insertions(+), 17 deletions(-)

diff --git a/src/xen/xen_driver.c b/src/xen/xen_driver.c
index 3a14d12..0916e49 100644
--- a/src/xen/xen_driver.c
+++ b/src/xen/xen_driver.c
@@ -134,7 +134,7 @@ xenDomainUsedCpus(virDomainPtr dom)
     char *res = NULL;
     int ncpus;
     int nb_vcpu;
-    char *cpulist = NULL;
+    virBitmapPtr cpulist = NULL;
     unsigned char *cpumap = NULL;
     size_t cpumaplen;
     int nb = 0;
@@ -156,7 +156,7 @@ xenDomainUsedCpus(virDomainPtr dom)
     if (xenUnifiedNodeGetInfo(dom->conn, &nodeinfo) < 0)
         return NULL;
 
-    if (VIR_ALLOC_N(cpulist, priv->nbNodeCpus) < 0) {
+    if (!(cpulist = virBitmapNew(priv->nbNodeCpus))) {
         virReportOOMError();
         goto done;
     }
@@ -175,9 +175,11 @@ xenDomainUsedCpus(virDomainPtr dom)
                                           cpumap, cpumaplen)) >= 0) {
         for (n = 0 ; n < ncpus ; n++) {
             for (m = 0 ; m < priv->nbNodeCpus; m++) {
-                if ((cpulist[m] == 0) &&
+                bool used;
+                ignore_value(virBitmapGetBit(cpulist, m, &used));
+                if ((!used) &&
                     (VIR_CPU_USABLE(cpumap, cpumaplen, n, m))) {
-                    cpulist[m] = 1;
+                    ignore_value(virBitmapSetBit(cpulist, m));
                     nb++;
                     /* if all CPU are used just return NULL */
                     if (nb == priv->nbNodeCpus)
@@ -186,11 +188,11 @@ xenDomainUsedCpus(virDomainPtr dom)
                 }
             }
         }
-        res = virDomainCpuSetFormat(cpulist, priv->nbNodeCpus);
+        res = virBitmapFormat(cpulist);
     }
 
 done:
-    VIR_FREE(cpulist);
+    virBitmapFree(cpulist);
     VIR_FREE(cpumap);
     VIR_FREE(cpuinfo);
     return res;
diff --git a/src/xen/xend_internal.c b/src/xen/xend_internal.c
index 984f040..95152f8 100644
--- a/src/xen/xend_internal.c
+++ b/src/xen/xend_internal.c
@@ -1113,7 +1113,7 @@ sexpr_to_xend_topology(const struct sexpr *root,
 {
     const char *nodeToCpu;
     const char *cur;
-    char *cpuset = NULL;
+    virBitmapPtr cpuset = NULL;
     int *cpuNums = NULL;
     int cell, cpu, nb_cpus;
     int n = 0;
@@ -1126,8 +1126,6 @@ sexpr_to_xend_topology(const struct sexpr *root,
     numCpus = sexpr_int(root, "node/nr_cpus");
 
 
-    if (VIR_ALLOC_N(cpuset, numCpus) < 0)
-        goto memory_error;
     if (VIR_ALLOC_N(cpuNums, numCpus) < 0)
         goto memory_error;
 
@@ -1150,17 +1148,21 @@ sexpr_to_xend_topology(const struct sexpr *root,
         virSkipSpacesAndBackslash(&cur);
         if (STRPREFIX(cur, "no cpus")) {
             nb_cpus = 0;
-            for (cpu = 0; cpu < numCpus; cpu++)
-                cpuset[cpu] = 0;
+            if (!(cpuset = virBitmapNew(numCpus)))
+                goto memory_error;
         } else {
-            nb_cpus = virDomainCpuSetParse(cur, 'n', cpuset, numCpus);
+            nb_cpus = virBitmapParse(cur, 'n', &cpuset, numCpus);
             if (nb_cpus < 0)
                 goto error;
         }
 
-        for (n = 0, cpu = 0; cpu < numCpus; cpu++)
-            if (cpuset[cpu] == 1)
+        for (n = 0, cpu = 0; cpu < numCpus; cpu++) {
+            bool used;
+
+            ignore_value(virBitmapGetBit(cpuset, cpu, &used));
+            if (used)
                 cpuNums[n++] = cpu;
+        }
 
         if (virCapabilitiesAddHostNUMACell(caps,
                                            cell,
@@ -1169,20 +1171,20 @@ sexpr_to_xend_topology(const struct sexpr *root,
             goto memory_error;
     }
     VIR_FREE(cpuNums);
-    VIR_FREE(cpuset);
+    virBitmapFree(cpuset);
     return 0;
 
   parse_error:
     virReportError(VIR_ERR_XEN_CALL, "%s", _("topology syntax error"));
   error:
     VIR_FREE(cpuNums);
-    VIR_FREE(cpuset);
+    virBitmapFree(cpuset);
 
     return -1;
 
   memory_error:
     VIR_FREE(cpuNums);
-    VIR_FREE(cpuset);
+    virBitmapFree(cpuset);
     virReportOOMError();
     return -1;
 }
-- 
1.7.11.4