Add MallInfo

1 files changed, 29 insertions, 0 deletions

diff --git a/vespajlib/src/main/java/com/yahoo/nativec/MallInfo.java b/vespajlib/src/main/java/com/yahoo/nativec/MallInfo.java
new file mode 100644
index 00000000000..c9d781ddd4d
--- /dev/null
+++ b/vespajlib/src/main/java/com/yahoo/nativec/MallInfo.java
@@ -0,0 +1,29 @@
+package com.yahoo.nativec;
+
+import com.sun.jna.Structure;
+
+public class MallInfo {
+    private final static Throwable initException = NativeC.loadLibrary(MallInfo.class);
+    public static Throwable init() {
+        return initException;
+    }
+    // Equivalent JNA mapping
+    private static class MallInfoStruct extends Structure {
+        public static class ByValue extends MallInfoStruct implements Structure.ByValue { }
+        public int arena;     /* Non-mmapped space allocated (bytes) */
+        public int ordblks;   /* Number of free chunks */
+        public int smblks;    /* Number of free fastbin blocks */
+        public int hblks;     /* Number of mmapped regions */
+        public int hblkhd;    /* Space allocated in mmapped regions (bytes) */
+        public int usmblks;   /* See below */
+        public int fsmblks;   /* Space in freed fastbin blocks (bytes) */
+        public int uordblks;  /* Total allocated space (bytes) */
+        public int fordblks;  /* Total free space (bytes) */
+        public int keepcost;  /* Top-most, releasable space (bytes) */
+    }
+    private static native MallInfoStruct.ByValue mallinfo();
+    public MallInfo() {
+        mallinfo = mallinfo();
+    }
+    private final MallInfoStruct mallinfo;
+}