ThreadUtils: Add joinUninterruptibly() with timeout

talk/app/webrtc/java/android/org/webrtc/ThreadUtils.java

Index: talk/app/webrtc/java/android/org/webrtc/ThreadUtils.java
diff --git a/talk/app/webrtc/java/android/org/webrtc/ThreadUtils.java b/talk/app/webrtc/java/android/org/webrtc/ThreadUtils.java
index b078cb8b19c2405c9c68d410a46e6ee20c93a01d..bd4fa44b9a8f9e7d289fedecc57dc382378b063a 100644
--- a/talk/app/webrtc/java/android/org/webrtc/ThreadUtils.java
+++ b/talk/app/webrtc/java/android/org/webrtc/ThreadUtils.java
@@ -88,6 +88,29 @@ final class ThreadUtils {
     }
   }
 
+  public static boolean joinUninterruptibly(final Thread thread, long timeoutMs) {

[henrika_webrtc, 2015/11/16 10:00:27]

Nit, above 80?

[magjed_webrtc, 2015/11/16 12:12:14]

Yes, but the limit is 100 for java files.

+    final long startTimeMs = SystemClock.elapsedRealtime();
+    long timeRemainingMs = timeoutMs;
+    boolean wasInterrupted = false;
+    while (timeRemainingMs > 0) {
+      try {
+        thread.join(timeRemainingMs);
+        break;
+      } catch (InterruptedException e) {
+        // Someone is asking us to return early at our convenience. We can't cancel this operation,
+        // but we should preserve the information and pass it along.
+        wasInterrupted = true;
+        final long elapsedTimeMs = SystemClock.elapsedRealtime() - startTimeMs;
+        timeRemainingMs = timeoutMs - elapsedTimeMs;
+      }
+    }
+    // Pass interruption information along.
+    if (wasInterrupted) {
+      Thread.currentThread().interrupt();
+    }
+    return !thread.isAlive();
+  }
+
   public static void joinUninterruptibly(final Thread thread) {
     executeUninterruptibly(new BlockingOperation() {
       @Override