Show size/alloc/free per Dalvik heap space in dumpsys

Add the heap size/alloc/free stats to the Dalvik heap space breakdown section in dumpsys meminfo.

Also, now the zygote heap has a distict ashmem region name.

Bug: 9532137
Bug: 8266259

(cherry picked from commit 8a620d52b5d12599b539c7a7621daf3012de5074)

Change-Id: I7283e30cefbc6c57b23a5dc1ae88b037f3e11bbf

1 files changed, 21 insertions, 0 deletions

diff --git a/libdvm/src/main/java/dalvik/system/VMDebug.java b/libdvm/src/main/java/dalvik/system/VMDebug.java
index a80cfcc..9966d5e 100644
--- a/libdvm/src/main/java/dalvik/system/VMDebug.java
+++ b/libdvm/src/main/java/dalvik/system/VMDebug.java
@@ -373,4 +373,25 @@ public final class VMDebug {
      * @return the number of matching instances.
      */
     public static native long countInstancesOfClass(Class klass, boolean assignable);
+
+    /**
+     * Export the heap per-space stats for dumpsys meminfo.
+     *
+     * The content of the array is:
+     *
+     * <pre>
+     *   data[0] : the application heap space size
+     *   data[1] : the application heap space allocated bytes
+     *   data[2] : the application heap space free bytes
+     *   data[3] : the zygote heap space size
+     *   data[4] : the zygote heap space allocated size
+     *   data[5] : the zygote heap space free size
+     *   data[6] : the large object space size
+     *   data[7] : the large object space allocated bytes
+     *   data[8] : the large object space free bytes
+     * </pre>
+     *
+     * @param data the array into which the stats are written.
+     */
+    public static native void getHeapSpaceStats(long[] data);
 }