Import Android SDK Platform PI [4335822]

/google/data/ro/projects/android/fetch_artifact \
    --bid 4335822 \
    --target sdk_phone_armv7-win_sdk \
    sdk-repo-linux-sources-4335822.zip

AndroidVersion.ApiLevel has been modified to appear as 28

Change-Id: Ic8f04be005a71c2b9abeaac754d8da8d6f9a2c32

1 files changed, 102 insertions, 0 deletions

diff --git a/android/text/StaticLayoutPerfTest.java b/android/text/StaticLayoutPerfTest.java
new file mode 100644
index 00000000..57a61ec8
--- /dev/null
+++ b/android/text/StaticLayoutPerfTest.java
@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2016 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.text;
+
+import android.perftests.utils.BenchmarkState;
+import android.perftests.utils.PerfStatusReporter;
+
+import android.support.test.filters.LargeTest;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.nio.CharBuffer;
+import java.util.Random;
+
+@LargeTest
+@RunWith(AndroidJUnit4.class)
+public class StaticLayoutPerfTest {
+
+    public StaticLayoutPerfTest() {
+    }
+
+    @Rule
+    public PerfStatusReporter mPerfStatusReporter = new PerfStatusReporter();
+
+    private static final String FIXED_TEXT = "Lorem ipsum dolor sit amet, consectetur adipiscing "
+            + "elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad "
+            + "minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea "
+            + "commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse "
+            + "cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non "
+            + "proident, sunt in culpa qui officia deserunt mollit anim id est laborum.";
+    private static final int FIXED_TEXT_LENGTH = FIXED_TEXT.length();
+
+    private static TextPaint PAINT = new TextPaint();
+    private static final int TEXT_WIDTH = 20 * (int) PAINT.getTextSize();
+
+    @Test
+    public void testCreate() {
+        final BenchmarkState state = mPerfStatusReporter.getBenchmarkState();
+        while (state.keepRunning()) {
+            StaticLayout.Builder.obtain(FIXED_TEXT, 0, FIXED_TEXT_LENGTH, PAINT, TEXT_WIDTH)
+                    .build();
+        }
+    }
+
+    private static final String ALPHABET = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
+    private static final int ALPHABET_LENGTH = ALPHABET.length();
+
+    private static final int PARA_LENGTH = 500;
+    private final char[] mBuffer = new char[PARA_LENGTH];
+    private final Random mRandom = new Random(31415926535L);
+
+    private CharSequence generateRandomParagraph(int wordLen) {
+        for (int i = 0; i < PARA_LENGTH; i++) {
+            if (i % (wordLen + 1) == wordLen) {
+                mBuffer[i] = ' ';
+            } else {
+                mBuffer[i] = ALPHABET.charAt(mRandom.nextInt(ALPHABET_LENGTH));
+            }
+        }
+        return CharBuffer.wrap(mBuffer);
+    }
+
+    // This tries to simulate the case where the cache hit rate is low, and most of the text is
+    // new text.
+    @Test
+    public void testCreateRandom() {
+        final BenchmarkState state = mPerfStatusReporter.getBenchmarkState();
+        while (state.keepRunning()) {
+            final CharSequence text = generateRandomParagraph(9);
+            StaticLayout.Builder.obtain(text, 0, text.length(), PAINT, TEXT_WIDTH)
+                    .build();
+        }
+    }
+
+    @Test
+    public void testCreateRandom_breakBalanced() {
+        final BenchmarkState state = mPerfStatusReporter.getBenchmarkState();
+        while (state.keepRunning()) {
+            final CharSequence text = generateRandomParagraph(9);
+            StaticLayout.Builder.obtain(text, 0, text.length(), PAINT, TEXT_WIDTH)
+                    .setBreakStrategy(Layout.BREAK_STRATEGY_BALANCED)
+                    .build();
+        }
+    }
+}