Report metrics for the size of the native heap.

1 files changed, 19 insertions, 0 deletions

diff --git a/vespajlib/src/main/java/com/yahoo/nativec/NativeHeap.java b/vespajlib/src/main/java/com/yahoo/nativec/NativeHeap.java
new file mode 100644
index 00000000000..929ebdd1737
--- /dev/null
+++ b/vespajlib/src/main/java/com/yahoo/nativec/NativeHeap.java
@@ -0,0 +1,19 @@
+package com.yahoo.nativec;
+
+import com.sun.jna.Platform;
+
+public class NativeHeap {
+    public long usedSize() { return 0; }
+    public long totalSize() { return 0; }
+    public long availableSize() { return 0; }
+    public static NativeHeap sample() {
+        if (Platform.isLinux()) {
+            GLibcVersion version = new GLibcVersion();
+            if ((version.major() >= 3) || ((version.major() == 2) && (version.minor() >= 33))) {
+                return new MallInfo2();
+            }
+            return new MallInfo();
+        }
+        return new NativeHeap();
+    }
+}