[libvirt] [PATCHv10 2/4] util: Add function to free monitor statistical data

[Wang Huaqiang]

The call of virResctrlMonitorGetStats will allocate the memory for
holding cache occupancy or memory bandwidth statistics.

This patch added an function, virResctrlMonitorFreeStats, as the
opposing action of virResctrlMonitorGetStats to free these memory.

Signed-off-by: Wang Huaqiang <huaqiang.wang at intel.com>
---
 src/libvirt_private.syms |  1 +
 src/util/virresctrl.c    | 16 ++++++++++++++++
 src/util/virresctrl.h    |  4 ++++
 3 files changed, 21 insertions(+)

diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 8889aaa..5018a13 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -2692,6 +2692,7 @@ virResctrlInfoNew;
 virResctrlMonitorAddPID;
 virResctrlMonitorCreate;
 virResctrlMonitorDeterminePath;
+virResctrlMonitorFreeStats;
 virResctrlMonitorGetCacheOccupancy;
 virResctrlMonitorGetID;
 virResctrlMonitorNew;
diff --git a/src/util/virresctrl.c b/src/util/virresctrl.c
index 3268310..6ffd71f 100644
--- a/src/util/virresctrl.c
+++ b/src/util/virresctrl.c
@@ -2747,6 +2747,22 @@ virResctrlMonitorGetStats(virResctrlMonitorPtr monitor,
 }
 
 
+void
+virResctrlMonitorFreeStats(virResctrlMonitorStatsPtr *stats,
+                           size_t nstats)
+{
+    size_t i = 0;
+
+    if (!stats)
+        return;
+
+    for (i = 0; i < nstats; i++)
+        VIR_FREE(stats[i]);
+
+    VIR_FREE(stats);
+}
+
+
 /*
  * virResctrlMonitorGetCacheOccupancy
  *
diff --git a/src/util/virresctrl.h b/src/util/virresctrl.h
index e2ed4ee..8ea9758 100644
--- a/src/util/virresctrl.h
+++ b/src/util/virresctrl.h
@@ -231,4 +231,8 @@ int
 virResctrlMonitorGetCacheOccupancy(virResctrlMonitorPtr monitor,
                                    virResctrlMonitorStatsPtr **stats,
                                    size_t *nstats);
+
+void
+virResctrlMonitorFreeStats(virResctrlMonitorStatsPtr *stats,
+                           size_t nstats);
 #endif /*  __VIR_RESCTRL_H__ */
-- 
2.7.4