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Code Issues Releases Activity

放弃Unsafe包操作

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Carm Jos
2022-04-19 23:20:40 +08:00
parent 80747ac922
commit 132ca81635
8 changed files with 38 additions and 32 deletions
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impl/yaml/src/test/java/config/offset/FieldOffset.java
+2
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@@ -59,4 +59,6 @@ public class FieldOffset implements Comparable<FieldOffset> {
public int compareTo(@NotNull FieldOffset that) {
return this.offsetValue.compareTo(that.offsetValue);
}
}
impl/yaml/src/test/java/config/offset/OffsetUtil.java
+18 -10
View File
@@ -1,11 +1,10 @@
package config.offset;
import jdk.internal.misc.Unsafe;
import sun.misc.Unsafe;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.security.AccessController;
import java.security.PrivilegedExceptionAction;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
@@ -18,14 +17,23 @@ public class OffsetUtil {
static {
try {
unsafe = AccessController.doPrivileged((PrivilegedExceptionAction<Unsafe>) () -> {
Field theUnsafe = Unsafe.class.getDeclaredField("theUnsafe");
theUnsafe.setAccessible(true);
return (Unsafe) theUnsafe.get(null);
});
} catch (Throwable e) {
System.err.println("Unable to load unsafe");
// 获取 Unsafe 内部的私有的实例化单例对象
Field field = Unsafe.class.getDeclaredField("theUnsafe");
// 无视权限
field.setAccessible(true);
unsafe = (Unsafe) field.get(null);
} catch (NoSuchFieldException | IllegalAccessException e) {
e.printStackTrace();
}
// try {
// unsafe = AccessController.doPrivileged((PrivilegedExceptionAction<Unsafe>) () -> {
// Field theUnsafe = Unsafe.class.getDeclaredField("theUnsafe");
// theUnsafe.setAccessible(true);
// return (Unsafe) theUnsafe.get(null);
// });
// } catch (Throwable e) {
// System.err.println("Unable to load unsafe");
// }
}
public static List<FieldOffset> getClassMemberOffset(Class<?> beanClass) {