本文整理汇总了Java中org.objectweb.asm.Opcodes.DUP2属性的典型用法代码示例。如果您正苦于以下问题：Java Opcodes.DUP2属性的具体用法？Java Opcodes.DUP2怎么用？Java Opcodes.DUP2使用的例子？那么恭喜您, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在类org.objectweb.asm.Opcodes的用法示例。
在下文中一共展示了Opcodes.DUP2属性的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: visitFieldInsn
public void visitFieldInsn(int opcode, String owner, String fieldName,
String desc) {
if (firstInstruction)
addInc();
if (logPointerChange && opcode == Opcodes.PUTFIELD
&& desc.charAt(0) == 'L') {
if (constructor && !doneSuperConstructor && name.equals(owner)
&& finalFields.contains(fieldName))
delayedFieldPointer.put(fieldName, desc);
else {
// instrument reference changes from
// putfield ...,obj,v' => ...
// to
// dup2 ...,obj,v' => ...,obj,v',obj,v'
// swap ...,obj,v',obj,v' => ...,obj,v',v',obj
// dup ...,obj,v',v',obj => ...,obj,v',v',obj,obj
// getfield ...,obj,v',v',obj,obj => ...,obj,v',v',obj,v
// invokespecial
// pointerchangelog(Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)V
// ...,obj,v',v',obj,v => ...,obj,v'
// putfield ...,obj,v' =>
super.visitInsn(Opcodes.DUP2);
super.visitInsn(Opcodes.SWAP);
super.visitInsn(Opcodes.DUP);
super.visitFieldInsn(Opcodes.GETFIELD, owner, fieldName,
desc);
super.visitMethodInsn(Opcodes.INVOKESTATIC, name,
LOG_INTERNAL_POINTER_CHANGE,
POINTER_CHANGE_SIGNATURE);
}
} else if (logPointerChange && opcode == Opcodes.PUTSTATIC
&& desc.charAt(0) == 'L') {
// if (finalFields.contains(fieldName)) {
// // assume field is initially null
// super.visitInsn(Opcodes.DUP);
// } else {
// instrument reference changes from
// putstatic ...,v' => ...
// to
// dup ...,v' => ...,v',v'
// ldc owner.class ...,v',v' => ...,v',v',k
// getstatic ...,v',v',k => ...,v',v',k,v
// invokespecial
// staticpointerchangelog(Ljava/lang/Object;Ljava/lang/Class;Ljava/lang/Object;)V
// ...,v',v',k,v => ...,v'
super.visitInsn(Opcodes.DUP);
super.visitLdcInsn(Type.getObjectType(owner));
super.visitFieldInsn(Opcodes.GETSTATIC, owner, fieldName, desc);
super.visitMethodInsn(Opcodes.INVOKESTATIC, name,
LOG_INTERNAL_STATIC_POINTER_CHANGE,
STATIC_POINTER_CHANGE_SIGNATURE);
// }
}
super.visitFieldInsn(opcode, owner, fieldName, desc);
}