Import Android SDK Platform P [4344336]

/google/data/ro/projects/android/fetch_artifact \
    --bid 4344336 \
    --target sdk_phone_armv7-win_sdk \
    sdk-repo-linux-sources-4344336.zip

AndroidVersion.ApiLevel has been modified to appear as 28

Change-Id: If482fcd4cfaf6c5e544e5574926be25a293e9a6d

3 files changed, 144 insertions, 49 deletions

diff --git a/android/net/LinkProperties.java b/android/net/LinkProperties.java
index f527f77d..2c9fb23e 100644
--- a/android/net/LinkProperties.java
+++ b/android/net/LinkProperties.java
@@ -70,8 +70,23 @@ public final class LinkProperties implements Parcelable {
      * @hide
      */
     public static class CompareResult<T> {
-        public List<T> removed = new ArrayList<T>();
-        public List<T> added = new ArrayList<T>();
+        public final List<T> removed = new ArrayList<T>();
+        public final List<T> added = new ArrayList<T>();
+
+        public CompareResult() {}
+
+        public CompareResult(Collection<T> oldItems, Collection<T> newItems) {
+            if (oldItems != null) {
+                removed.addAll(oldItems);
+            }
+            if (newItems != null) {
+                for (T newItem : newItems) {
+                    if (!removed.remove(newItem)) {
+                        added.add(newItem);
+                    }
+                }
+            }
+        }
 
         @Override
         public String toString() {
@@ -1000,17 +1015,8 @@ public final class LinkProperties implements Parcelable {
          * are in target but not in mLinkAddresses are placed in the
          * addedAddresses.
          */
-        CompareResult<LinkAddress> result = new CompareResult<LinkAddress>();
-        result.removed = new ArrayList<LinkAddress>(mLinkAddresses);
-        result.added.clear();
-        if (target != null) {
-            for (LinkAddress newAddress : target.getLinkAddresses()) {
-                if (! result.removed.remove(newAddress)) {
-                    result.added.add(newAddress);
-                }
-            }
-        }
-        return result;
+        return new CompareResult<>(mLinkAddresses,
+                target != null ? target.getLinkAddresses() : null);
     }
 
     /**
@@ -1029,18 +1035,7 @@ public final class LinkProperties implements Parcelable {
          * are in target but not in mDnses are placed in the
          * addedAddresses.
          */
-        CompareResult<InetAddress> result = new CompareResult<InetAddress>();
-
-        result.removed = new ArrayList<InetAddress>(mDnses);
-        result.added.clear();
-        if (target != null) {
-            for (InetAddress newAddress : target.getDnsServers()) {
-                if (! result.removed.remove(newAddress)) {
-                    result.added.add(newAddress);
-                }
-            }
-        }
-        return result;
+        return new CompareResult<>(mDnses, target != null ? target.getDnsServers() : null);
     }
 
     /**
@@ -1058,18 +1053,7 @@ public final class LinkProperties implements Parcelable {
          * leaving the routes that are different. And route address which
          * are in target but not in mRoutes are placed in added.
          */
-        CompareResult<RouteInfo> result = new CompareResult<RouteInfo>();
-
-        result.removed = getAllRoutes();
-        result.added.clear();
-        if (target != null) {
-            for (RouteInfo r : target.getAllRoutes()) {
-                if (! result.removed.remove(r)) {
-                    result.added.add(r);
-                }
-            }
-        }
-        return result;
+        return new CompareResult<>(getAllRoutes(), target != null ? target.getAllRoutes() : null);
     }
 
     /**
@@ -1087,18 +1071,8 @@ public final class LinkProperties implements Parcelable {
          * leaving the interface names that are different. And interface names which
          * are in target but not in this are placed in added.
          */
-        CompareResult<String> result = new CompareResult<String>();
-
-        result.removed = getAllInterfaceNames();
-        result.added.clear();
-        if (target != null) {
-            for (String r : target.getAllInterfaceNames()) {
-                if (! result.removed.remove(r)) {
-                    result.added.add(r);
-                }
-            }
-        }
-        return result;
+        return new CompareResult<>(getAllInterfaceNames(),
+                target != null ? target.getAllInterfaceNames() : null);
     }
 
 
diff --git a/android/net/metrics/WakeupEvent.java b/android/net/metrics/WakeupEvent.java
new file mode 100644
index 00000000..cbf3fc8c
--- /dev/null
+++ b/android/net/metrics/WakeupEvent.java
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.metrics;
+
+/**
+ * An event logged when NFLOG notifies userspace of a wakeup packet for
+ * watched interfaces.
+ * {@hide}
+ */
+public class WakeupEvent {
+    public String iface;
+    public long timestampMs;
+    public int uid;
+
+    @Override
+    public String toString() {
+        return String.format("WakeupEvent(%tT.%tL, %s, uid: %d)",
+                timestampMs, timestampMs, iface, uid);
+    }
+}
diff --git a/android/net/metrics/WakeupStats.java b/android/net/metrics/WakeupStats.java
new file mode 100644
index 00000000..d520b974
--- /dev/null
+++ b/android/net/metrics/WakeupStats.java
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.metrics;
+
+import android.os.Process;
+import android.os.SystemClock;
+
+/**
+ * An event logged per interface and that aggregates WakeupEvents for that interface.
+ * {@hide}
+ */
+public class WakeupStats {
+
+    private static final int NO_UID = -1;
+
+    public final long creationTimeMs = SystemClock.elapsedRealtime();
+    public final String iface;
+
+    public long totalWakeups = 0;
+    public long rootWakeups = 0;
+    public long systemWakeups = 0;
+    public long nonApplicationWakeups = 0;
+    public long applicationWakeups = 0;
+    public long unroutedWakeups = 0;
+    public long durationSec = 0;
+
+    public WakeupStats(String iface) {
+        this.iface = iface;
+    }
+
+    /** Update durationSec with current time. */
+    public void updateDuration() {
+        durationSec = (SystemClock.elapsedRealtime() - creationTimeMs) / 1000;
+    }
+
+    /** Update wakeup counters for the given WakeupEvent. */
+    public void countEvent(WakeupEvent ev) {
+        totalWakeups++;
+        switch (ev.uid) {
+            case Process.ROOT_UID:
+                rootWakeups++;
+                break;
+            case Process.SYSTEM_UID:
+                systemWakeups++;
+                break;
+            case NO_UID:
+                unroutedWakeups++;
+                break;
+            default:
+                if (ev.uid >= Process.FIRST_APPLICATION_UID) {
+                    applicationWakeups++;
+                } else {
+                    nonApplicationWakeups++;
+                }
+                break;
+        }
+    }
+
+    @Override
+    public String toString() {
+        updateDuration();
+        return new StringBuilder()
+                .append("WakeupStats(").append(iface)
+                .append(", total: ").append(totalWakeups)
+                .append(", root: ").append(rootWakeups)
+                .append(", system: ").append(systemWakeups)
+                .append(", apps: ").append(applicationWakeups)
+                .append(", non-apps: ").append(nonApplicationWakeups)
+                .append(", unrouted: ").append(unroutedWakeups)
+                .append(", ").append(durationSec).append("s)")
+                .toString();
+    }
+}