Register for kernel global data usage alerts.
Instead of polling every 15 minutes, register for alerts that trigger
when system-wide traffic passes a threshold. Still mixed with polling
to persist UID stats, but relaxed to 30 minutes. Currently watches
for every 512kB.
Make persistence decision separately for network versus UID, and use
total delta bytes when making decision. Use light bootstrap during
systemReady() instead of heavy poll, which had been force-loading all
UID data unnecessarily.
Bug: 5023631
Change-Id: I04b723d6c4bf872fb1028071122dba66a8e1b576
diff --git a/services/java/com/android/server/NetworkManagementService.java b/services/java/com/android/server/NetworkManagementService.java
index 06077dd..c679dcf 100644
--- a/services/java/com/android/server/NetworkManagementService.java
+++ b/services/java/com/android/server/NetworkManagementService.java
@@ -69,7 +69,8 @@
/**
* @hide
*/
-class NetworkManagementService extends INetworkManagementService.Stub implements Watchdog.Monitor {
+public class NetworkManagementService extends INetworkManagementService.Stub
+ implements Watchdog.Monitor {
private static final String TAG = "NetworkManagementService";
private static final boolean DBG = false;
private static final String NETD_TAG = "NetdConnector";
@@ -87,6 +88,12 @@
/** Path to {@code /proc/net/xt_qtaguid/iface_stat}. */
private final File mStatsXtIface;
+ /**
+ * Name representing {@link #setGlobalAlert(long)} limit when delivered to
+ * {@link INetworkManagementEventObserver#limitReached(String, String)}.
+ */
+ public static final String LIMIT_GLOBAL_ALERT = "globalAlert";
+
/** {@link #mStatsXtUid} headers. */
private static final String KEY_IFACE = "iface";
private static final String KEY_UID = "uid_tag_int";