Overriding toString method.

LongArrayQueue wasn't overriding the toString method, so it couldn't be used
in dumps.

Bug: 135764360
Test: atest CountQuotaTrackerTest
Change-Id: I02b1d22f8cf0fca96d0fdaff3becaa07e46ddb06

1 files changed, 20 insertions, 0 deletions

diff --git a/core/java/android/util/LongArrayQueue.java b/core/java/android/util/LongArrayQueue.java
index d5f048434b32..5c701dbebdfb 100644
--- a/core/java/android/util/LongArrayQueue.java
+++ b/core/java/android/util/LongArrayQueue.java
@@ -162,4 +162,24 @@ public class LongArrayQueue {
         final int index = (mTail == 0) ? mValues.length - 1 : mTail - 1;
         return mValues[index];
     }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public String toString() {
+        if (mSize <= 0) {
+            return "{}";
+        }
+
+        final StringBuilder buffer = new StringBuilder(mSize * 64);
+        buffer.append('{');
+        buffer.append(get(0));
+        for (int i = 1; i < mSize; i++) {
+            buffer.append(", ");
+            buffer.append(get(i));
+        }
+        buffer.append('}');
+        return buffer.toString();
+    }
 }