本文整理汇总了Java中org.objectweb.asm.Opcodes.DUP属性的典型用法代码示例。如果您正苦于以下问题：Java Opcodes.DUP属性的具体用法？Java Opcodes.DUP怎么用？Java Opcodes.DUP使用的例子？那么, 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.DUP属性的5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: visitTypeInsn
public void visitTypeInsn(int opcode, String type) {
if (firstInstruction)
addInc();
super.visitTypeInsn(opcode, type);
// we deal with Opcodes.NEW through the constructors
if (opcode == Opcodes.ANEWARRAY) {
int siteId = getNextSiteId();
addLog(true, siteId);
} else if (DO_NEW_INVOKESPECIAL_SEQUENCE && opcode == Opcodes.NEW) {
super.visitInsn(Opcodes.DUP);
Triplet p = new Triplet();
p.type = type;
p.var = this.localsBase + 1 + newTypeStack.size();
p.siteId = getNextSiteId();
if (this.maxLocals < p.var) {
this.maxLocals = p.var;
methodToLargestLocal.put(this.encodedName, new Integer(
p.var));
}
super.setLocalType(p.var, JAVA_LANG_OBJECT_TYPE); // super.newLocal(OBJECT_TYPE);
newTypeStack.addLast(p);
super.visitVarInsn(Opcodes.ASTORE, p.var);
}
}
示例2: addWhereAmI
private void addWhereAmI() {
// 0: new #2; //class java/lang/Exception
// 3: dup
// 4: invokespecial #3; //Method java/lang/Exception."<init>":()V
// 7: invokevirtual #4; //Method
// java/lang/Exception.printStackTrace:()V
// 10: return
// super.visitTypeInsn(Opcodes.NEW, type);
String exClass = Type.getInternalName(Exception.class);
super.visitTypeInsn(Opcodes.NEW, exClass);
super.visitInsn(Opcodes.DUP);
super.visitMethodInsn(Opcodes.INVOKESPECIAL, exClass, "<init>",
"()V");
super.visitMethodInsn(Opcodes.INVOKEVIRTUAL, exClass,
"printStackTrace", "()V");
}
示例3: onMethodEnter
@SuppressWarnings("unused")
protected void onMethodEnter() {
if (done) return;
overridden = true;
Label start = new Label();
Label normal = new Label();
super.visitLabel(start);
super.visitFieldInsn(Opcodes.GETSTATIC, CONFIGURATION, CONFIGURATION_FIELD_NAME, Type.INT_TYPE.getDescriptor());
super.visitInsn(Opcodes.DUP);
super.visitJumpInsn(Opcodes.IFEQ, normal);
super.visitInsn(Opcodes.IRETURN);
super.visitLabel(normal);
super.visitInsn(Opcodes.POP);
Label end = new Label();
super.visitJumpInsn(Opcodes.GOTO, end);
super.visitLabel(end);
super.visitTryCatchBlock(start, normal, end, Type.getType(Throwable.class).getDescriptor());
}
示例4: 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);
}
示例5: addLog
private void addLog(boolean dup, int site) {
if (dup)
super.visitInsn(Opcodes.DUP);
super.visitLdcInsn(new Integer(site));
super.visitMethodInsn(Opcodes.INVOKESTATIC, name,
LOG_INTERNAL_ALLOC_REPORT, OBJECT_SITE_SIGNATURE);
if (!constructor)
super.visitMethodInsn(Opcodes.INVOKESTATIC, name,
LOG_INTERNAL_ALLOC_DONE, VOID_SIGNATURE);
}