Merge "Add perf test for SystemFonts.getAvailableFonts" into sc-dev am: c226a840

/*

 * Copyright (C) 2021 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.graphics.fonts.SystemFonts;

import android.perftests.utils.BenchmarkState;

import android.perftests.utils.PerfStatusReporter;

import androidx.test.filters.LargeTest;

import androidx.test.runner.AndroidJUnit4;

import org.junit.Rule;

import org.junit.Test;

import org.junit.runner.RunWith;

@LargeTest

@RunWith(AndroidJUnit4.class)

public class SystemFontsPerfTest {

    @Rule

    public PerfStatusReporter mPerfStatusReporter = new PerfStatusReporter();

    @Test

    public void getAvailableFonts() {

        final BenchmarkState state = mPerfStatusReporter.getBenchmarkState();

        while (state.keepRunning()) {

            state.pauseTiming();

            SystemFonts.resetAvailableFonts();

            System.gc();

            state.resumeTiming();

            SystemFonts.getAvailableFonts();

        }

    }

}

        }

    }

    /**

     * @hide

     */

    public static void resetAvailableFonts() {

        synchronized (LOCK) {

            sAvailableFonts = null;

        }

    }

    private static @Nullable ByteBuffer mmap(@NonNull String fullPath) {

        try (FileInputStream file = new FileInputStream(fullPath)) {

            final FileChannel fileChannel = file.getChannel();