From ea609fb1c32ac3bf3b623a917e102a4fd4f8875d Mon Sep 17 00:00:00 2001
From: fankesyooni <qzmmcn@163.com>
Date: Thu, 20 Apr 2023 22:37:55 +0800
Subject: [PATCH] Added LruCache function to save memory

---
 .../hook/utils/memory/LruCacheMemory.kt       | 45 +++++++++++++
 .../utils/memory/factory/LruCacheFactory.kt   | 64 +++++++++++++++++++
 2 files changed, 109 insertions(+)
 create mode 100644 yukihookapi/src/main/java/com/highcapable/yukihookapi/hook/utils/memory/LruCacheMemory.kt
 create mode 100644 yukihookapi/src/main/java/com/highcapable/yukihookapi/hook/utils/memory/factory/LruCacheFactory.kt

diff --git a/yukihookapi/src/main/java/com/highcapable/yukihookapi/hook/utils/memory/LruCacheMemory.kt b/yukihookapi/src/main/java/com/highcapable/yukihookapi/hook/utils/memory/LruCacheMemory.kt
new file mode 100644
index 00000000..fd28fd93
--- /dev/null
+++ b/yukihookapi/src/main/java/com/highcapable/yukihookapi/hook/utils/memory/LruCacheMemory.kt
@@ -0,0 +1,45 @@
+/*
+ * YukiHookAPI - An efficient Hook API and Xposed Module solution built in Kotlin.
+ * Copyright (C) 2019-2023 HighCapable
+ * https://github.com/fankes/YukiHookAPI
+ *
+ * MIT License
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * This file is Created by fankes on 2023/4/20.
+ */
+package com.highcapable.yukihookapi.hook.utils.memory
+
+import android.util.LruCache
+
+/**
+ * [LruCache] 内存定义类
+ */
+internal object LruCacheMemory {
+
+    /** 当前最大内存压缩倍数 */
+    private const val MAX_COMPRESSION_FACTOR = 16
+
+    /** 当前可用内存大小 (KB) */
+    private val maxMemorySize = (Runtime.getRuntime().maxMemory() / 1024).toInt()
+
+    /** 当前可用缓存大小 (KB) */
+    internal val maxCacheSize = maxMemorySize / MAX_COMPRESSION_FACTOR
+}
\ No newline at end of file
diff --git a/yukihookapi/src/main/java/com/highcapable/yukihookapi/hook/utils/memory/factory/LruCacheFactory.kt b/yukihookapi/src/main/java/com/highcapable/yukihookapi/hook/utils/memory/factory/LruCacheFactory.kt
new file mode 100644
index 00000000..75cd5bab
--- /dev/null
+++ b/yukihookapi/src/main/java/com/highcapable/yukihookapi/hook/utils/memory/factory/LruCacheFactory.kt
@@ -0,0 +1,64 @@
+/*
+ * YukiHookAPI - An efficient Hook API and Xposed Module solution built in Kotlin.
+ * Copyright (C) 2019-2023 HighCapable
+ * https://github.com/fankes/YukiHookAPI
+ *
+ * MIT License
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * This file is Created by fankes on 2023/4/20.
+ */
+package com.highcapable.yukihookapi.hook.utils.memory.factory
+
+import android.util.LruCache
+import com.highcapable.yukihookapi.hook.utils.memory.LruCacheMemory
+
+/**
+ * 创建 [LruCache]<[K], [V]>
+ * @param sizeOf 回调自定义缓存大小计算数值 - 默认不设置
+ * @return [LruCache]<[K], [V]>
+ */
+internal fun <K, V> createLruCache(sizeOf: (() -> Int)? = null) = object : LruCache<K, V>(LruCacheMemory.maxCacheSize) {
+    override fun sizeOf(key: K?, value: V?) = when {
+        sizeOf != null -> sizeOf()
+        value is Array<*> -> {
+            var allLengths = 0
+            if (value.isNotEmpty()) value.forEach { allLengths += it.toString().length }
+            allLengths / 1024
+        }
+        value is Map<*, *> -> {
+            var allLengths = 0
+            if (value.isNotEmpty()) value.forEach { allLengths += it.toString().length }
+            allLengths / 1024
+        }
+        value is List<*> -> {
+            var allLengths = 0
+            if (value.isNotEmpty()) value.forEach { allLengths += it.toString().length }
+            allLengths / 1024
+        }
+        value is Set<*> -> {
+            var allLengths = 0
+            if (value.isNotEmpty()) value.forEach { allLengths += it.toString().length }
+            allLengths / 1024
+        }
+        value is String -> value.length / 1024
+        else -> value.toString().length / 1024
+    }
+}
\ No newline at end of file