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| 1 | +package org.jetbrains.kotlin.com.intellij.util.containers; |
| 2 | + |
| 3 | +import android.util.Log; |
| 4 | +import java.lang.reflect.Field; |
| 5 | +import java.lang.reflect.Method; |
| 6 | +import java.util.Arrays; |
| 7 | +import org.jetbrains.annotations.NotNull; |
| 8 | +import org.jetbrains.kotlin.com.intellij.util.ReflectionUtil; |
| 9 | +import org.lsposed.hiddenapibypass.HiddenApiBypass; |
| 10 | + |
| 11 | +@SuppressWarnings("ALL") |
| 12 | +public class UnsafeImpl { |
| 13 | + |
| 14 | + private static final Object unsafe; |
| 15 | + |
| 16 | + private static final Method putObjectVolatile; |
| 17 | + private static final Method getObjectVolatile; |
| 18 | + private static final Method compareAndSwapObject; |
| 19 | + private static final Method compareAndSwapInt; |
| 20 | + private static final Method compareAndSwapLong; |
| 21 | + private static final Method getAndAddInt; |
| 22 | + private static final Method objectFieldOffset; |
| 23 | + private static final Method arrayIndexScale; |
| 24 | + private static final Method arrayBaseOffset; |
| 25 | + // private static final Method copyMemory; |
| 26 | + |
| 27 | + private static final String TAG = "UnsafeImpl"; |
| 28 | + |
| 29 | + static { |
| 30 | + try { |
| 31 | + unsafe = ReflectionUtil.getUnsafe(); |
| 32 | + putObjectVolatile = find("putObjectVolatile", Object.class, long.class, Object.class); |
| 33 | + getObjectVolatile = find("getObjectVolatile", Object.class, long.class); |
| 34 | + compareAndSwapObject = find("compareAndSwapObject", Object.class, long.class, Object.class, Object.class); |
| 35 | + compareAndSwapInt = find("compareAndSwapInt", Object.class, long.class, int.class, int.class); |
| 36 | + compareAndSwapLong = find("compareAndSwapLong", Object.class, long.class, long.class, long.class); |
| 37 | + getAndAddInt = find("getAndAddInt", Object.class, long.class, int.class); |
| 38 | + objectFieldOffset = find("objectFieldOffset", Field.class); |
| 39 | + arrayBaseOffset = find("arrayBaseOffset", Class.class); |
| 40 | + arrayIndexScale = find("arrayIndexScale", Class.class); |
| 41 | + // copyMemory = find("copyMemory", Object.class, long.class, Object.class, long.class, long.class); |
| 42 | + } catch (Throwable t) { |
| 43 | + throw new Error(t); |
| 44 | + } |
| 45 | + } |
| 46 | + |
| 47 | + public static int arrayBaseOffset(Class<?> arrayClass) { |
| 48 | + try { |
| 49 | + return (int) arrayBaseOffset.invoke(unsafe, arrayClass); |
| 50 | + } catch (Throwable t) { |
| 51 | + throw new RuntimeException(t); |
| 52 | + } |
| 53 | + } |
| 54 | + |
| 55 | + public static int arrayIndexScale(Class<?> arrayClass) { |
| 56 | + try { |
| 57 | + return (int) arrayIndexScale.invoke(unsafe, arrayClass); |
| 58 | + } catch (Throwable t) { |
| 59 | + throw new RuntimeException(t); |
| 60 | + } |
| 61 | + } |
| 62 | + |
| 63 | + public static boolean compareAndSwapInt(Object object, long offset, int expected, int value) { |
| 64 | + try { |
| 65 | + return (boolean) compareAndSwapInt.invoke(unsafe, object, offset, expected, value); |
| 66 | + } catch (Throwable t) { |
| 67 | + throw new RuntimeException(t); |
| 68 | + } |
| 69 | + } |
| 70 | + |
| 71 | + public static boolean compareAndSwapLong(@NotNull Object object, long offset, long expected, long value) { |
| 72 | + try { |
| 73 | + return (boolean) compareAndSwapLong.invoke(unsafe, object, offset, expected, value); |
| 74 | + } catch (Throwable t) { |
| 75 | + throw new RuntimeException(t); |
| 76 | + } |
| 77 | + } |
| 78 | + |
| 79 | + public static boolean compareAndSwapObject(Object o, long offset, Object expected, Object x) { |
| 80 | + try { |
| 81 | + return (boolean) compareAndSwapObject.invoke(unsafe, o, offset, expected, x); |
| 82 | + } catch (Throwable t) { |
| 83 | + throw new RuntimeException(t); |
| 84 | + } |
| 85 | + } |
| 86 | + |
| 87 | + public static void copyMemory(Object srcBase, long srcOffset, Object destBase, long destOffset, long bytes) { |
| 88 | + throw new UnsupportedOperationException("Not supported on Android!"); |
| 89 | + } |
| 90 | + |
| 91 | + public static int getAndAddInt(Object object, long offset, int v) { |
| 92 | + try { |
| 93 | + return (int) getAndAddInt.invoke(unsafe, object, offset, v); |
| 94 | + } catch (Throwable t) { |
| 95 | + throw new RuntimeException(t); |
| 96 | + } |
| 97 | + } |
| 98 | + |
| 99 | + public static Object getObjectVolatile(Object object, long offset) { |
| 100 | + try { |
| 101 | + return getObjectVolatile.invoke(unsafe, object, offset); |
| 102 | + } catch (Throwable t) { |
| 103 | + throw new RuntimeException(t); |
| 104 | + } |
| 105 | + } |
| 106 | + |
| 107 | + public static long objectFieldOffset(Field f) { |
| 108 | + try { |
| 109 | + return (long) objectFieldOffset.invoke(unsafe, f); |
| 110 | + } catch (Throwable t) { |
| 111 | + throw new RuntimeException(t); |
| 112 | + } |
| 113 | + } |
| 114 | + |
| 115 | + public static void putObjectVolatile(Object o, long offset, Object x) { |
| 116 | + try { |
| 117 | + putObjectVolatile.invoke(unsafe, o, offset, x); |
| 118 | + } catch (Throwable t) { |
| 119 | + throw new RuntimeException(t); |
| 120 | + } |
| 121 | + } |
| 122 | + |
| 123 | + private static @NotNull Method find(String name, Class<?>... params) throws Exception { |
| 124 | + Log.d(TAG, "find: name=" + name + ", params=" + Arrays.toString(params)); |
| 125 | + Method m = HiddenApiBypass.getDeclaredMethod(unsafe.getClass(), name, params); |
| 126 | + m.setAccessible(true); |
| 127 | + return m; |
| 128 | + } |
| 129 | +} |
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