Merge "Reduce resource cache size and use LruCache" into main

import android.text.TextUtils;

import android.util.Base64;

import android.util.Log;

import android.util.LruCache;

import android.util.Pair;

import com.android.internal.telephony.ISetOpportunisticDataCallback;

import java.util.Arrays;

import java.util.Collections;

import java.util.HashMap;

import java.util.LinkedHashMap;

import java.util.List;

import java.util.Locale;

import java.util.Map;

     * In order to prevent the overflow of the heap size due to an indiscriminate increase in the

     * cache, the heap size of the resource cache is set sufficiently large.

     */

    private static final int MAX_RESOURCE_CACHE_ENTRY_COUNT = 10_000;

    private static final int MAX_RESOURCE_CACHE_ENTRY_COUNT = 1_000;

    /**

     * Cache of Resources that has been created in getResourcesForSubId. Key contains package name,

     * and Configuration of Resources. If more than the maximum number of resources are stored in

     * this cache, the least recently used Resources will be removed to maintain the maximum size.

     */

    private static final Map<Pair<String, Configuration>, Resources> sResourcesCache =

            Collections.synchronizedMap(new LinkedHashMap<>(16, 0.75f, true) {

                @Override

                protected boolean removeEldestEntry(Entry eldest) {

                    return size() > MAX_RESOURCE_CACHE_ENTRY_COUNT;

                }

            });

    private static final LruCache<Pair<String, Configuration>, Resources> sResourcesCache =

            new LruCache<>(MAX_RESOURCE_CACHE_ENTRY_COUNT);

    /**

     * A listener class for monitoring changes to {@link SubscriptionInfo} records.

                configurationKey.setLocale(Locale.ROOT);

            }

            cacheKey = Pair.create(context.getPackageName(), configurationKey);

            synchronized (sResourcesCache) {

                Resources cached = sResourcesCache.get(cacheKey);

                if (cached != null) {

                    // Cache hit. Use cached Resources.

                    return cached;

                }

            }

        }

        final SubscriptionInfo subInfo =

                SubscriptionManager.from(context).getActiveSubscriptionInfo(subId);

        Resources res = newContext.getResources();

        if (cacheKey != null) {

            synchronized (sResourcesCache) {

                // Save the newly created Resources in the resource cache.

                sResourcesCache.put(cacheKey, res);

            }

        }

        return res;

    }