add a signaled reader to the eventlog

Test: manual using a logspammer app
Change-Id: I89e3dda82d4d1d3fc6d343b634642687e550f70a

1 files changed, 15 insertions, 0 deletions

diff --git a/core/java/android/util/EventLog.java b/core/java/android/util/EventLog.java
index 79d16fbfaee8..92c70bde5bb2 100644
--- a/core/java/android/util/EventLog.java
+++ b/core/java/android/util/EventLog.java
@@ -16,6 +16,8 @@
 
 package android.util;
 
+import android.annotation.SystemApi;
+
 import java.io.BufferedReader;
 import java.io.FileReader;
 import java.io.IOException;
@@ -253,6 +255,19 @@ public class EventLog {
             throws IOException;
 
     /**
+     * Read events from the log, filtered by type, blocking until logs are about to be overwritten.
+     * @param tags to search for
+     * @param timestamp timestamp allow logs before this time to be overwritten.
+     * @param output container to add events into
+     * @throws IOException if something goes wrong reading events
+     * @hide
+     */
+    @SystemApi
+    public static native void readEventsOnWrapping(int[] tags, long timestamp,
+            Collection<Event> output)
+            throws IOException;
+
+    /**
      * Get the name associated with an event type tag code.
      * @param tag code to look up
      * @return the name of the tag, or null if no tag has that number