Report SwapPss usage if available as part of Pss

Parse "SwapPss:" lines from /proc/pid/smaps if it exist, and store them
in a seperate stat entry.
Report SwapPss if made available by kernel, otherwise we fall back to
legacy Swap.

Fix getTotalSwappablePss documentation.

Change-Id: I361928c0f44c7dc9b959b91c127c916215063866
Signed-off-by: Thierry Strudel <tstrudel@google.com>
diff --git a/core/java/android/app/ActivityThread.java b/core/java/android/app/ActivityThread.java
index 81e00ff..ef68b4f 100644
--- a/core/java/android/app/ActivityThread.java
+++ b/core/java/android/app/ActivityThread.java
@@ -2107,35 +2107,44 @@
         if (!dumpSummaryOnly) {
             if (dumpFullInfo) {
                 printRow(pw, HEAP_FULL_COLUMN, "", "Pss", "Pss", "Shared", "Private",
-                        "Shared", "Private", "Swapped", "Heap", "Heap", "Heap");
+                        "Shared", "Private", memInfo.hasSwappedOutPss ? "SwapPss" : "Swap",
+                        "Heap", "Heap", "Heap");
                 printRow(pw, HEAP_FULL_COLUMN, "", "Total", "Clean", "Dirty", "Dirty",
-                        "Clean", "Clean", "Dirty", "Size", "Alloc", "Free");
+                        "Clean", "Clean", "Dirty",
+                        "Size", "Alloc", "Free");
                 printRow(pw, HEAP_FULL_COLUMN, "", "------", "------", "------", "------",
                         "------", "------", "------", "------", "------", "------");
                 printRow(pw, HEAP_FULL_COLUMN, "Native Heap", memInfo.nativePss,
                         memInfo.nativeSwappablePss, memInfo.nativeSharedDirty,
                         memInfo.nativePrivateDirty, memInfo.nativeSharedClean,
-                        memInfo.nativePrivateClean, memInfo.nativeSwappedOut,
+                        memInfo.nativePrivateClean, memInfo.hasSwappedOutPss ?
+                        memInfo.nativeSwappedOut : memInfo.nativeSwappedOutPss,
                         nativeMax, nativeAllocated, nativeFree);
                 printRow(pw, HEAP_FULL_COLUMN, "Dalvik Heap", memInfo.dalvikPss,
                         memInfo.dalvikSwappablePss, memInfo.dalvikSharedDirty,
                         memInfo.dalvikPrivateDirty, memInfo.dalvikSharedClean,
-                        memInfo.dalvikPrivateClean, memInfo.dalvikSwappedOut,
+                        memInfo.dalvikPrivateClean, memInfo.hasSwappedOutPss ?
+                        memInfo.dalvikSwappedOut : memInfo.dalvikSwappedOutPss,
                         dalvikMax, dalvikAllocated, dalvikFree);
             } else {
                 printRow(pw, HEAP_COLUMN, "", "Pss", "Private",
-                        "Private", "Swapped", "Heap", "Heap", "Heap");
+                        "Private", memInfo.hasSwappedOutPss ? "SwapPss" : "Swap",
+                        "Heap", "Heap", "Heap");
                 printRow(pw, HEAP_COLUMN, "", "Total", "Dirty",
                         "Clean", "Dirty", "Size", "Alloc", "Free");
                 printRow(pw, HEAP_COLUMN, "", "------", "------", "------",
                         "------", "------", "------", "------", "------");
                 printRow(pw, HEAP_COLUMN, "Native Heap", memInfo.nativePss,
                         memInfo.nativePrivateDirty,
-                        memInfo.nativePrivateClean, memInfo.nativeSwappedOut,
+                        memInfo.nativePrivateClean,
+                        memInfo.hasSwappedOutPss ? memInfo.nativeSwappedOutPss :
+                        memInfo.nativeSwappedOut,
                         nativeMax, nativeAllocated, nativeFree);
                 printRow(pw, HEAP_COLUMN, "Dalvik Heap", memInfo.dalvikPss,
                         memInfo.dalvikPrivateDirty,
-                        memInfo.dalvikPrivateClean, memInfo.dalvikSwappedOut,
+                        memInfo.dalvikPrivateClean,
+                        memInfo.hasSwappedOutPss ? memInfo.dalvikSwappedOutPss :
+                        memInfo.dalvikSwappedOut,
                         dalvikMax, dalvikAllocated, dalvikFree);
             }
 
@@ -2146,6 +2155,7 @@
             int otherSharedClean = memInfo.otherSharedClean;
             int otherPrivateClean = memInfo.otherPrivateClean;
             int otherSwappedOut = memInfo.otherSwappedOut;
+            int otherSwappedOutPss = memInfo.otherSwappedOutPss;
 
             for (int i=0; i<Debug.MemoryInfo.NUM_OTHER_STATS; i++) {
                 final int myPss = memInfo.getOtherPss(i);
@@ -2155,16 +2165,22 @@
                 final int mySharedClean = memInfo.getOtherSharedClean(i);
                 final int myPrivateClean = memInfo.getOtherPrivateClean(i);
                 final int mySwappedOut = memInfo.getOtherSwappedOut(i);
+                final int mySwappedOutPss = memInfo.getOtherSwappedOutPss(i);
                 if (myPss != 0 || mySharedDirty != 0 || myPrivateDirty != 0
-                        || mySharedClean != 0 || myPrivateClean != 0 || mySwappedOut != 0) {
+                        || mySharedClean != 0 || myPrivateClean != 0
+                        || (memInfo.hasSwappedOutPss ? mySwappedOutPss : mySwappedOut) != 0) {
                     if (dumpFullInfo) {
                         printRow(pw, HEAP_FULL_COLUMN, Debug.MemoryInfo.getOtherLabel(i),
                                 myPss, mySwappablePss, mySharedDirty, myPrivateDirty,
-                                mySharedClean, myPrivateClean, mySwappedOut, "", "", "");
+                                mySharedClean, myPrivateClean,
+                                memInfo.hasSwappedOutPss ? mySwappedOutPss : mySwappedOut,
+                                "", "", "");
                     } else {
                         printRow(pw, HEAP_COLUMN, Debug.MemoryInfo.getOtherLabel(i),
                                 myPss, myPrivateDirty,
-                                myPrivateClean, mySwappedOut, "", "", "");
+                                myPrivateClean,
+                                memInfo.hasSwappedOutPss ? mySwappedOutPss : mySwappedOut,
+                                "", "", "");
                     }
                     otherPss -= myPss;
                     otherSwappablePss -= mySwappablePss;
@@ -2173,26 +2189,32 @@
                     otherSharedClean -= mySharedClean;
                     otherPrivateClean -= myPrivateClean;
                     otherSwappedOut -= mySwappedOut;
+                    otherSwappedOutPss -= mySwappedOutPss;
                 }
             }
 
             if (dumpFullInfo) {
                 printRow(pw, HEAP_FULL_COLUMN, "Unknown", otherPss, otherSwappablePss,
                         otherSharedDirty, otherPrivateDirty, otherSharedClean, otherPrivateClean,
-                        otherSwappedOut, "", "", "");
+                        memInfo.hasSwappedOutPss ? otherSwappedOutPss : otherSwappedOut,
+                        "", "", "");
                 printRow(pw, HEAP_FULL_COLUMN, "TOTAL", memInfo.getTotalPss(),
                         memInfo.getTotalSwappablePss(),
                         memInfo.getTotalSharedDirty(), memInfo.getTotalPrivateDirty(),
                         memInfo.getTotalSharedClean(), memInfo.getTotalPrivateClean(),
-                        memInfo.getTotalSwappedOut(), nativeMax+dalvikMax,
-                        nativeAllocated+dalvikAllocated, nativeFree+dalvikFree);
+                        memInfo.hasSwappedOutPss ? memInfo.getTotalSwappedOut() :
+                        memInfo.getTotalSwappedOutPss(),
+                        nativeMax+dalvikMax, nativeAllocated+dalvikAllocated,
+                        nativeFree+dalvikFree);
             } else {
                 printRow(pw, HEAP_COLUMN, "Unknown", otherPss,
-                        otherPrivateDirty, otherPrivateClean, otherSwappedOut,
+                        otherPrivateDirty, otherPrivateClean,
+                        memInfo.hasSwappedOutPss ? otherSwappedOutPss : otherSwappedOut,
                         "", "", "");
                 printRow(pw, HEAP_COLUMN, "TOTAL", memInfo.getTotalPss(),
                         memInfo.getTotalPrivateDirty(),
                         memInfo.getTotalPrivateClean(),
+                        memInfo.hasSwappedOutPss ? memInfo.getTotalSwappedOutPss() :
                         memInfo.getTotalSwappedOut(),
                         nativeMax+dalvikMax,
                         nativeAllocated+dalvikAllocated, nativeFree+dalvikFree);
@@ -2211,16 +2233,22 @@
                     final int mySharedClean = memInfo.getOtherSharedClean(i);
                     final int myPrivateClean = memInfo.getOtherPrivateClean(i);
                     final int mySwappedOut = memInfo.getOtherSwappedOut(i);
+                    final int mySwappedOutPss = memInfo.getOtherSwappedOutPss(i);
                     if (myPss != 0 || mySharedDirty != 0 || myPrivateDirty != 0
-                            || mySharedClean != 0 || myPrivateClean != 0) {
+                            || mySharedClean != 0 || myPrivateClean != 0
+                            || (memInfo.hasSwappedOutPss ? mySwappedOutPss : mySwappedOut) != 0) {
                         if (dumpFullInfo) {
                             printRow(pw, HEAP_FULL_COLUMN, Debug.MemoryInfo.getOtherLabel(i),
                                     myPss, mySwappablePss, mySharedDirty, myPrivateDirty,
-                                    mySharedClean, myPrivateClean, mySwappedOut, "", "", "");
+                                    mySharedClean, myPrivateClean,
+                                    memInfo.hasSwappedOutPss ? mySwappedOutPss : mySwappedOut,
+                                    "", "", "");
                         } else {
                             printRow(pw, HEAP_COLUMN, Debug.MemoryInfo.getOtherLabel(i),
                                     myPss, myPrivateDirty,
-                                    myPrivateClean, mySwappedOut, "", "", "");
+                                    myPrivateClean,
+                                    memInfo.hasSwappedOutPss ? mySwappedOutPss : mySwappedOut,
+                                    "", "", "");
                         }
                     }
                 }
@@ -2246,9 +2274,15 @@
         printRow(pw, ONE_COUNT_COLUMN,
             "System:", memInfo.getSummarySystem());
         pw.println(" ");
-        printRow(pw, TWO_COUNT_COLUMNS,
-            "TOTAL:", memInfo.getSummaryTotalPss(),
-            "TOTAL SWAP (KB):", memInfo.getSummaryTotalSwap());
+        if (memInfo.hasSwappedOutPss) {
+            printRow(pw, TWO_COUNT_COLUMNS,
+                "TOTAL:", memInfo.getSummaryTotalPss(),
+                "TOTAL SWAP PSS:", memInfo.getSummaryTotalSwapPss());
+        } else {
+            printRow(pw, TWO_COUNT_COLUMNS,
+                "TOTAL:", memInfo.getSummaryTotalPss(),
+                "TOTAL SWAP (KB):", memInfo.getSummaryTotalSwap());
+        }
     }
 
     public void registerOnActivityPausedListener(Activity activity,
diff --git a/core/java/android/os/Debug.java b/core/java/android/os/Debug.java
index fdd34f5..e58744b 100644
--- a/core/java/android/os/Debug.java
+++ b/core/java/android/os/Debug.java
@@ -130,6 +130,9 @@
         /** The dirty dalvik pages that have been swapped out. */
         /** @hide We may want to expose this, eventually. */
         public int dalvikSwappedOut;
+        /** The dirty dalvik pages that have been swapped out, proportional. */
+        /** @hide We may want to expose this, eventually. */
+        public int dalvikSwappedOutPss;
 
         /** The proportional set size for the native heap. */
         public int nativePss;
@@ -149,6 +152,9 @@
         /** The dirty native pages that have been swapped out. */
         /** @hide We may want to expose this, eventually. */
         public int nativeSwappedOut;
+        /** The dirty native pages that have been swapped out, proportional. */
+        /** @hide We may want to expose this, eventually. */
+        public int nativeSwappedOutPss;
 
         /** The proportional set size for everything else. */
         public int otherPss;
@@ -168,6 +174,13 @@
         /** The dirty pages used by anyting else that have been swapped out. */
         /** @hide We may want to expose this, eventually. */
         public int otherSwappedOut;
+        /** The dirty pages used by anyting else that have been swapped out, proportional. */
+        /** @hide We may want to expose this, eventually. */
+        public int otherSwappedOutPss;
+
+        /** Whether the kernel reports proportional swap usage */
+        /** @hide */
+        public boolean hasSwappedOutPss;
 
         /** @hide */
         public static final int HEAP_UNKNOWN = 0;
@@ -235,7 +248,7 @@
         public static final int NUM_DVK_STATS = 8;
 
         /** @hide */
-        public static final int NUM_CATEGORIES = 7;
+        public static final int NUM_CATEGORIES = 8;
 
         /** @hide */
         public static final int offsetPss = 0;
@@ -251,6 +264,8 @@
         public static final int offsetSharedClean = 5;
         /** @hide */
         public static final int offsetSwappedOut = 6;
+        /** @hide */
+        public static final int offsetSwappedOutPss = 7;
 
         private int[] otherStats = new int[(NUM_OTHER_STATS+NUM_DVK_STATS)*NUM_CATEGORIES];
 
@@ -261,7 +276,7 @@
          * Return total PSS memory usage in kB.
          */
         public int getTotalPss() {
-            return dalvikPss + nativePss + otherPss;
+            return dalvikPss + nativePss + otherPss + getTotalSwappedOutPss();
         }
 
         /**
@@ -274,7 +289,8 @@
         }
 
         /**
-         * Return total PSS memory usage in kB.
+         * Return total PSS memory usage in kB mapping a file of one of the following extension:
+         * .so, .jar, .apk, .ttf, .dex, .odex, .oat, .art .
          */
         public int getTotalSwappablePss() {
             return dalvikSwappablePss + nativeSwappablePss + otherSwappablePss;
@@ -316,6 +332,14 @@
             return dalvikSwappedOut + nativeSwappedOut + otherSwappedOut;
         }
 
+        /**
+         * Return total swapped out memory in kB, proportional.
+         * @hide
+         */
+        public int getTotalSwappedOutPss() {
+            return dalvikSwappedOutPss + nativeSwappedOutPss + otherSwappedOutPss;
+        }
+
         /** @hide */
         public int getOtherPss(int which) {
             return otherStats[which*NUM_CATEGORIES + offsetPss];
@@ -359,6 +383,11 @@
         }
 
         /** @hide */
+        public int getOtherSwappedOutPss(int which) {
+            return otherStats[which*NUM_CATEGORIES + offsetSwappedOutPss];
+        }
+
+        /** @hide */
         public static String getOtherLabel(int which) {
             switch (which) {
                 case OTHER_DALVIK_OTHER: return "Dalvik Other";
@@ -632,12 +661,24 @@
          *    know if the Swap memory is shared or private, so we don't know
          *    what to blame on the application and what on the system.
          *    For now, just lump all the Swap in one place.
+         *    For kernels reporting SwapPss {@link #getSummaryTotalSwapPss()}
+         *    will report the application proportional Swap.
          * @hide
          */
         public int getSummaryTotalSwap() {
             return getTotalSwappedOut();
         }
 
+        /**
+         * Total proportional Swap in KB.
+         * Notes:
+         *  * Always 0 if {@link #hasSwappedOutPss} is false.
+         * @hide
+         */
+        public int getSummaryTotalSwapPss() {
+            return getTotalSwappedOutPss();
+        }
+
         public int describeContents() {
             return 0;
         }
@@ -664,6 +705,8 @@
             dest.writeInt(otherPrivateClean);
             dest.writeInt(otherSharedClean);
             dest.writeInt(otherSwappedOut);
+            dest.writeInt(hasSwappedOutPss ? 1 : 0);
+            dest.writeInt(otherSwappedOutPss);
             dest.writeIntArray(otherStats);
         }
 
@@ -689,6 +732,8 @@
             otherPrivateClean = source.readInt();
             otherSharedClean = source.readInt();
             otherSwappedOut = source.readInt();
+            hasSwappedOutPss = source.readInt() != 0;
+            otherSwappedOutPss = source.readInt();
             otherStats = source.createIntArray();
         }
 
@@ -1563,11 +1608,12 @@
 
     /**
      * Retrieves the PSS memory used by the process as given by the
-     * smaps.  Optionally supply a long array of 1 entry to also
-     * receive the uss of the process, and another array to also
-     * retrieve the separate memtrack size.  @hide
+     * smaps.  Optionally supply a long array of 2 entries to also
+     * receive the Uss and SwapPss of the process, and another array to also
+     * retrieve the separate memtrack size.
+     * @hide
      */
-    public static native long getPss(int pid, long[] outUss, long[] outMemtrack);
+    public static native long getPss(int pid, long[] outUssSwapPss, long[] outMemtrack);
 
     /** @hide */
     public static final int MEMINFO_TOTAL = 0;
diff --git a/core/jni/android_os_Debug.cpp b/core/jni/android_os_Debug.cpp
index 2488111..03a1e71 100644
--- a/core/jni/android_os_Debug.cpp
+++ b/core/jni/android_os_Debug.cpp
@@ -84,6 +84,7 @@
     jfieldID privateClean_field;
     jfieldID sharedClean_field;
     jfieldID swappedOut_field;
+    jfieldID swappedOutPss_field;
 };
 
 struct stat_field_names {
@@ -94,20 +95,22 @@
     const char* privateClean_name;
     const char* sharedClean_name;
     const char* swappedOut_name;
+    const char* swappedOutPss_name;
 };
 
 static stat_fields stat_fields[_NUM_CORE_HEAP];
 
 static stat_field_names stat_field_names[_NUM_CORE_HEAP] = {
     { "otherPss", "otherSwappablePss", "otherPrivateDirty", "otherSharedDirty",
-        "otherPrivateClean", "otherSharedClean", "otherSwappedOut" },
+        "otherPrivateClean", "otherSharedClean", "otherSwappedOut", "otherSwappedOutPss" },
     { "dalvikPss", "dalvikSwappablePss", "dalvikPrivateDirty", "dalvikSharedDirty",
-        "dalvikPrivateClean", "dalvikSharedClean", "dalvikSwappedOut" },
+        "dalvikPrivateClean", "dalvikSharedClean", "dalvikSwappedOut", "dalvikSwappedOutPss" },
     { "nativePss", "nativeSwappablePss", "nativePrivateDirty", "nativeSharedDirty",
-        "nativePrivateClean", "nativeSharedClean", "nativeSwappedOut" }
+        "nativePrivateClean", "nativeSharedClean", "nativeSwappedOut", "nativeSwappedOutPss" }
 };
 
 jfieldID otherStats_field;
+jfieldID hasSwappedOutPss_field;
 
 static bool memtrackLoaded;
 
@@ -119,6 +122,7 @@
     int privateClean;
     int sharedClean;
     int swappedOut;
+    int swappedOutPss;
 };
 
 #define BINDER_STATS "/proc/binder/stats"
@@ -206,7 +210,7 @@
     return err;
 }
 
-static void read_mapinfo(FILE *fp, stats_t* stats)
+static void read_mapinfo(FILE *fp, stats_t* stats, bool* foundSwapPss)
 {
     char line[1024];
     int len, nameLen;
@@ -216,7 +220,7 @@
     float sharing_proportion = 0.0;
     unsigned shared_clean = 0, shared_dirty = 0;
     unsigned private_clean = 0, private_dirty = 0;
-    unsigned swapped_out = 0;
+    unsigned swapped_out = 0, swapped_out_pss = 0;
     bool is_swappable = false;
     unsigned temp;
 
@@ -230,6 +234,8 @@
     int subHeap = HEAP_UNKNOWN;
     int prevHeap = HEAP_UNKNOWN;
 
+    *foundSwapPss = false;
+
     if(fgets(line, sizeof(line), fp) == 0) return;
 
     while (!done) {
@@ -340,6 +346,7 @@
         private_clean = 0;
         private_dirty = 0;
         swapped_out = 0;
+        swapped_out_pss = 0;
 
         while (true) {
             if (fgets(line, 1024, fp) == 0) {
@@ -365,6 +372,9 @@
                 /* referenced = temp; */
             } else if (line[0] == 'S' && sscanf(line, "Swap: %d kB", &temp) == 1) {
                 swapped_out = temp;
+            } else if (line[0] == 'S' && sscanf(line, "SwapPss: %d kB", &temp) == 1) {
+                *foundSwapPss = true;
+                swapped_out_pss = temp;
             } else if (sscanf(line, "%" SCNx64 "-%" SCNx64 " %*s %*x %*x:%*x %*d", &start, &end) == 2) {
                 // looks like a new mapping
                 // example: "10000000-10001000 ---p 10000000 00:00 0"
@@ -390,6 +400,7 @@
             stats[whichHeap].privateClean += private_clean;
             stats[whichHeap].sharedClean += shared_clean;
             stats[whichHeap].swappedOut += swapped_out;
+            stats[whichHeap].swappedOutPss += swapped_out_pss;
             if (whichHeap == HEAP_DALVIK || whichHeap == HEAP_DALVIK_OTHER) {
                 stats[subHeap].pss += pss;
                 stats[subHeap].swappablePss += swappable_pss;
@@ -398,12 +409,13 @@
                 stats[subHeap].privateClean += private_clean;
                 stats[subHeap].sharedClean += shared_clean;
                 stats[subHeap].swappedOut += swapped_out;
+                stats[subHeap].swappedOutPss += swapped_out_pss;
             }
         }
     }
 }
 
-static void load_maps(int pid, stats_t* stats)
+static void load_maps(int pid, stats_t* stats, bool* foundSwapPss)
 {
     char tmp[128];
     FILE *fp;
@@ -412,17 +424,18 @@
     fp = fopen(tmp, "r");
     if (fp == 0) return;
 
-    read_mapinfo(fp, stats);
+    read_mapinfo(fp, stats, foundSwapPss);
     fclose(fp);
 }
 
 static void android_os_Debug_getDirtyPagesPid(JNIEnv *env, jobject clazz,
         jint pid, jobject object)
 {
+    bool foundSwapPss;
     stats_t stats[_NUM_HEAP];
     memset(&stats, 0, sizeof(stats));
 
-    load_maps(pid, stats);
+    load_maps(pid, stats, &foundSwapPss);
 
     struct graphics_memory_pss graphics_mem;
     if (read_memtrack_memory(pid, &graphics_mem) == 0) {
@@ -442,6 +455,7 @@
         stats[HEAP_UNKNOWN].privateClean += stats[i].privateClean;
         stats[HEAP_UNKNOWN].sharedClean += stats[i].sharedClean;
         stats[HEAP_UNKNOWN].swappedOut += stats[i].swappedOut;
+        stats[HEAP_UNKNOWN].swappedOutPss += stats[i].swappedOutPss;
     }
 
     for (int i=0; i<_NUM_CORE_HEAP; i++) {
@@ -452,9 +466,11 @@
         env->SetIntField(object, stat_fields[i].privateClean_field, stats[i].privateClean);
         env->SetIntField(object, stat_fields[i].sharedClean_field, stats[i].sharedClean);
         env->SetIntField(object, stat_fields[i].swappedOut_field, stats[i].swappedOut);
+        env->SetIntField(object, stat_fields[i].swappedOutPss_field, stats[i].swappedOutPss);
     }
 
 
+    env->SetBooleanField(object, hasSwappedOutPss_field, foundSwapPss);
     jintArray otherIntArray = (jintArray)env->GetObjectField(object, otherStats_field);
 
     jint* otherArray = (jint*)env->GetPrimitiveArrayCritical(otherIntArray, 0);
@@ -471,6 +487,7 @@
         otherArray[j++] = stats[i].privateClean;
         otherArray[j++] = stats[i].sharedClean;
         otherArray[j++] = stats[i].swappedOut;
+        otherArray[j++] = stats[i].swappedOutPss;
     }
 
     env->ReleasePrimitiveArrayCritical(otherIntArray, otherArray, 0);
@@ -481,11 +498,12 @@
     android_os_Debug_getDirtyPagesPid(env, clazz, getpid(), object);
 }
 
-static jlong android_os_Debug_getPssPid(JNIEnv *env, jobject clazz, jint pid, jlongArray outUss,
-        jlongArray outMemtrack)
+static jlong android_os_Debug_getPssPid(JNIEnv *env, jobject clazz, jint pid,
+        jlongArray outUssSwapPss, jlongArray outMemtrack)
 {
     char line[1024];
     jlong pss = 0;
+    jlong swapPss = 0;
     jlong uss = 0;
     jlong memtrack = 0;
 
@@ -521,19 +539,31 @@
                     }
                     uss += atoi(c);
                 }
+            } else if (line[0] == 'S' && strncmp(line, "SwapPss:", 8) == 0) {
+                char* c = line + 8;
+                jlong lSwapPss;
+                while (*c != 0 && (*c < '0' || *c > '9')) {
+                    c++;
+                }
+                lSwapPss = atoi(c);
+                swapPss += lSwapPss;
+                pss += lSwapPss; // Also in swap, those pages would be accounted as Pss without SWAP
             }
         }
 
         fclose(fp);
     }
 
-    if (outUss != NULL) {
-        if (env->GetArrayLength(outUss) >= 1) {
-            jlong* outUssArray = env->GetLongArrayElements(outUss, 0);
-            if (outUssArray != NULL) {
-                outUssArray[0] = uss;
+    if (outUssSwapPss != NULL) {
+        if (env->GetArrayLength(outUssSwapPss) >= 1) {
+            jlong* outUssSwapPssArray = env->GetLongArrayElements(outUssSwapPss, 0);
+            if (outUssSwapPssArray != NULL) {
+                outUssSwapPssArray[0] = uss;
+                if (env->GetArrayLength(outUssSwapPss) >= 2) {
+                    outUssSwapPssArray[1] = swapPss;
+                }
             }
-            env->ReleaseLongArrayElements(outUss, outUssArray, 0);
+            env->ReleaseLongArrayElements(outUssSwapPss, outUssSwapPssArray, 0);
         }
     }
 
@@ -1056,6 +1086,7 @@
     }
 
     otherStats_field = env->GetFieldID(clazz, "otherStats", "[I");
+    hasSwappedOutPss_field = env->GetFieldID(clazz, "hasSwappedOutPss", "Z");
 
     for (int i=0; i<_NUM_CORE_HEAP; i++) {
         stat_fields[i].pss_field =
@@ -1072,6 +1103,8 @@
                 env->GetFieldID(clazz, stat_field_names[i].sharedClean_name, "I");
         stat_fields[i].swappedOut_field =
                 env->GetFieldID(clazz, stat_field_names[i].swappedOut_name, "I");
+        stat_fields[i].swappedOutPss_field =
+                env->GetFieldID(clazz, stat_field_names[i].swappedOutPss_name, "I");
     }
 
     return jniRegisterNativeMethods(env, "android/os/Debug", gMethods, NELEM(gMethods));