Example usage for org.objectweb.asm Opcodes INVOKEVIRTUAL

List of usage examples for org.objectweb.asm Opcodes INVOKEVIRTUAL

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Introduction

In this page you can find the example usage for org.objectweb.asm Opcodes INVOKEVIRTUAL.

Prototype

int INVOKEVIRTUAL

To view the source code for org.objectweb.asm Opcodes INVOKEVIRTUAL.

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Usage

From source file:co.paralleluniverse.fibers.instrument.InstrumentMethod.java

License:Open Source License

private void emitStoreState(MethodVisitor mv, int idx, FrameInfo fi, int numArgsToPreserve) {
    Frame f = frames[fi.endInstruction];

    if (fi.lBefore != null)
        fi.lBefore.accept(mv);//w  w w  .  j a va2  s.c o m

    mv.visitVarInsn(Opcodes.ALOAD, lvarStack);
    emitConst(mv, idx);
    emitConst(mv, fi.numSlots);
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, STACK_NAME, "pushMethod", "(II)V");

    // store operand stack
    for (int i = f.getStackSize(); i-- > 0;) {
        BasicValue v = (BasicValue) f.getStack(i);
        if (!isOmitted(v)) {
            if (!isNullType(v)) {
                int slotIdx = fi.stackSlotIndices[i];
                assert slotIdx >= 0 && slotIdx < fi.numSlots;
                emitStoreValue(mv, v, lvarStack, slotIdx, -1);
            } else {
                db.log(LogLevel.DEBUG, "NULL stack entry: type=%s size=%d", v.getType(), v.getSize());
                mv.visitInsn(Opcodes.POP);
            }
        }
    }

    // store local vars
    for (int i = firstLocal; i < f.getLocals(); i++) {
        BasicValue v = (BasicValue) f.getLocal(i);
        if (!isNullType(v)) {
            mv.visitVarInsn(v.getType().getOpcode(Opcodes.ILOAD), i);
            int slotIdx = fi.localSlotIndices[i];
            assert slotIdx >= 0 && slotIdx < fi.numSlots;
            emitStoreValue(mv, v, lvarStack, slotIdx, i);
        }
    }

    // restore last numArgsToPreserve operands
    for (int i = f.getStackSize() - numArgsToPreserve; i < f.getStackSize(); i++) {
        BasicValue v = (BasicValue) f.getStack(i);
        if (!isOmitted(v)) {
            if (!isNullType(v)) {
                int slotIdx = fi.stackSlotIndices[i];
                assert slotIdx >= 0 && slotIdx < fi.numSlots;
                emitRestoreValue(mv, v, lvarStack, slotIdx, -1);
            } else {
                mv.visitInsn(Opcodes.ACONST_NULL);
            }
        }
    }
}

From source file:co.paralleluniverse.fibers.instrument.InstrumentMethod.java

License:Open Source License

private void emitPostRestore(MethodVisitor mv) {
    mv.visitVarInsn(Opcodes.ALOAD, lvarStack);
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, STACK_NAME, "postRestore", "()V");
}

From source file:co.paralleluniverse.fibers.instrument.InstrumentMethod.java

License:Open Source License

private void emitPreemptionPoint(MethodVisitor mv, int type) {
    mv.visitVarInsn(Opcodes.ALOAD, lvarStack);
    switch (type) {
    case 0://from  w  w  w. j  a va2s  .  c o  m
        mv.visitInsn(Opcodes.ICONST_0);
        break;
    case 1:
        mv.visitInsn(Opcodes.ICONST_1);
        break;
    case 2:
        mv.visitInsn(Opcodes.ICONST_2);
        break;
    case 3:
        mv.visitInsn(Opcodes.ICONST_3);
        break;
    default:
        throw new AssertionError("Unsupported type: " + type);
    }
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, STACK_NAME, "preemptionPoint", "(I)V");
}

From source file:co.paralleluniverse.fibers.instrument.InstrumentMethod.java

License:Open Source License

private void emitRestoreValue(MethodVisitor mv, BasicValue v, int lvarStack, int idx, int lvar) {
    mv.visitVarInsn(Opcodes.ALOAD, lvarStack);
    emitConst(mv, idx);//from   w  w w  . ja v a  2s  . co  m

    switch (v.getType().getSort()) {
    case Type.OBJECT:
        String internalName = v.getType().getInternalName();
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, STACK_NAME, "getObject", "(I)Ljava/lang/Object;");
        if (!internalName.equals("java/lang/Object")) // don't cast to Object ;)
            mv.visitTypeInsn(Opcodes.CHECKCAST, internalName);
        //                println(mv, "RESTORE " + (lvar >= 0 ? ("VAR " + lvar + ": ") : "OPRND: "));
        break;
    case Type.ARRAY:
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, STACK_NAME, "getObject", "(I)Ljava/lang/Object;");
        mv.visitTypeInsn(Opcodes.CHECKCAST, v.getType().getDescriptor());
        break;
    case Type.BYTE:
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, STACK_NAME, "getInt", "(I)I");
        mv.visitInsn(Opcodes.I2B);
        break;
    case Type.SHORT:
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, STACK_NAME, "getInt", "(I)I");
        mv.visitInsn(Opcodes.I2S);
        break;
    case Type.CHAR:
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, STACK_NAME, "getInt", "(I)I");
        mv.visitInsn(Opcodes.I2C);
        break;
    case Type.BOOLEAN:
    case Type.INT:
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, STACK_NAME, "getInt", "(I)I");
        break;
    case Type.FLOAT:
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, STACK_NAME, "getFloat", "(I)F");
        break;
    case Type.LONG:
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, STACK_NAME, "getLong", "(I)J");
        break;
    case Type.DOUBLE:
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, STACK_NAME, "getDouble", "(I)D");
        break;
    default:
        throw new InternalError("Unexpected type: " + v.getType());
    }
}

From source file:co.paralleluniverse.fibers.instrument.InstrumentMethod.java

License:Open Source License

private void println(MethodVisitor mv, String prefix, int refVar) {
    mv.visitFieldInsn(Opcodes.GETSTATIC, "java/lang/System", "err", "Ljava/io/PrintStream;");
    mv.visitTypeInsn(Opcodes.NEW, "java/lang/StringBuilder");
    mv.visitInsn(Opcodes.DUP);/*from ww  w.j  a  va2 s .  c o m*/
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "()V");
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Thread", "currentThread", "()Ljava/lang/Thread;");
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Thread", "getName", "()Ljava/lang/String;");
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
            "(Ljava/lang/String;)Ljava/lang/StringBuilder;");
    mv.visitLdcInsn(" " + prefix);
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
            "(Ljava/lang/String;)Ljava/lang/StringBuilder;");
    mv.visitLdcInsn(" var " + refVar + ":");
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
            "(Ljava/lang/String;)Ljava/lang/StringBuilder;");

    mv.visitVarInsn(Opcodes.ALOAD, refVar);

    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
            "(Ljava/lang/Object;)Ljava/lang/StringBuilder;");
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;");
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V");
}

From source file:co.paralleluniverse.fibers.instrument.InstrumentMethod.java

License:Open Source License

private void println(MethodVisitor mv, String prefix) {
    mv.visitInsn(Opcodes.DUP); // S1 S1

    mv.visitFieldInsn(Opcodes.GETSTATIC, "java/lang/System", "err", "Ljava/io/PrintStream;"); // PrintStream S1 S1

    mv.visitInsn(Opcodes.SWAP); // S1 PrintStream S1

    mv.visitTypeInsn(Opcodes.NEW, "java/lang/StringBuilder"); // StringBuilder S1 PrintStream S1
    mv.visitInsn(Opcodes.DUP); // StringBuilder StringBuilder S1 PrintStream S1
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "()V"); // StringBuilder S1 PrintStream S1
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Thread", "currentThread", "()Ljava/lang/Thread;");
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Thread", "getName", "()Ljava/lang/String;");
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
            "(Ljava/lang/String;)Ljava/lang/StringBuilder;");
    mv.visitLdcInsn(" " + prefix); // prefix StringBuilder S1 PrintStream S1
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
            "(Ljava/lang/String;)Ljava/lang/StringBuilder;"); // StringBuilder S1 PrintStream S1

    mv.visitInsn(Opcodes.SWAP); // S1 StringBuilder PrintStream S1

    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
            "(Ljava/lang/Object;)Ljava/lang/StringBuilder;"); // StringBuilder PrintStream S1
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;"); // PrintStream S1
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V"); // S1
}

From source file:co.paralleluniverse.fibers.instrument.MethodDatabase.java

License:Open Source License

private int isMethodSuspendable0(String className, String methodName, String methodDesc, int opcode) {
    if (methodName.charAt(0) == '<')
        return NONSUSPENDABLE; // special methods are never suspendable

    if (isYieldMethod(className, methodName))
        return SUSPENDABLE;

    ClassEntry entry = getClassEntry(className);
    if (entry == null) {
        entry = CLASS_NOT_FOUND;// w  ww.j av a2s .c  om

        if (cl != null) {
            log(LogLevel.INFO, "Trying to read class: %s", className);

            CheckInstrumentationVisitor civ = checkClass(className);
            if (civ == null)
                log(LogLevel.WARNING, "Class not found: %s", className);
            else
                entry = civ.getClassEntry();
        } else
            log(LogLevel.WARNING, "Can't check class: %s", className);

        recordSuspendableMethods(className, entry);
    }

    if (entry == CLASS_NOT_FOUND) {
        if (isJavaCore(className))
            return MAYBE_CORE;

        //            if (JavaAgent.isActive())
        //                throw new AssertionError();
        return UNKNOWN;
    }

    SuspendableType susp1 = entry.check(methodName, methodDesc);

    int suspendable = UNKNOWN;
    if (susp1 == null)
        suspendable = UNKNOWN;
    else if (susp1 == SuspendableType.SUSPENDABLE)
        suspendable = SUSPENDABLE;
    else if (susp1 == SuspendableType.SUSPENDABLE_SUPER)
        suspendable = SUSPENDABLE_ABSTRACT;
    else if (susp1 == SuspendableType.NON_SUSPENDABLE)
        suspendable = NONSUSPENDABLE;

    if (suspendable == UNKNOWN) {
        if (opcode == Opcodes.INVOKEVIRTUAL || opcode == Opcodes.INVOKESTATIC
                || opcode == Opcodes.INVOKESPECIAL) {
            if (entry.getSuperName() != null)
                suspendable = isMethodSuspendable0(entry.getSuperName(), methodName, methodDesc, opcode);
        }
        if (opcode == Opcodes.INVOKEINTERFACE || opcode == Opcodes.INVOKEVIRTUAL) { // can be INVOKEVIRTUAL on an abstract class implementing the interface
            for (String iface : entry.getInterfaces()) {
                int s = isMethodSuspendable0(iface, methodName, methodDesc, opcode);
                if (s > suspendable)
                    suspendable = s;
                if (suspendable > MAYBE_CORE)
                    break;
            }
        }
    }

    return suspendable;
}

From source file:com.alibaba.hotswap.processor.jdk.lang.modifier.ClassNewInstanceModifier.java

License:Open Source License

@Override
public void visitCode() {
    super.visitCode();

    mv.visitVarInsn(Opcodes.ALOAD, 0);//w ww.j a v a 2  s.  com
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Class", "getName", "()Ljava/lang/String;");
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, Type.getInternalName(HotswapRuntime.class), "hasClassMeta",
            "(Ljava/lang/String;)Z");
    Label old = new Label();
    mv.visitJumpInsn(Opcodes.IFEQ, old);

    // check it as a primary constructor
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Class", "getName", "()Ljava/lang/String;");
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, Type.getInternalName(HotswapRuntime.class), "getClassMeta",
            "(Ljava/lang/String;)Lcom/alibaba/hotswap/meta/ClassMeta;");
    mv.visitLdcInsn(HotswapConstants.INIT);
    mv.visitLdcInsn("()V");
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Type.getInternalName(ClassMeta.class), "isPrimaryInitMethod",
            "(Ljava/lang/String;Ljava/lang/String;)Z");
    mv.visitJumpInsn(Opcodes.IFNE, old);

    // get uniform constructor
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, Type.getInternalName(HotswapMethodUtil.class),
            "getConstructorParamTypes", "()[Ljava/lang/Class;");
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Class", "getConstructor",
            "([Ljava/lang/Class;)Ljava/lang/reflect/Constructor;");

    // index and objs
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Class", "getName", "()Ljava/lang/String;");
    mv.visitLdcInsn(HotswapConstants.INIT);
    mv.visitLdcInsn("()V");
    loadArgs();
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, Type.getInternalName(HotswapMethodUtil.class), "getMethodParams",
            "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)[Ljava/lang/Object;");

    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/reflect/Constructor", "newInstance",
            "([Ljava/lang/Object;)Ljava/lang/Object;");
    mv.visitInsn(Opcodes.ARETURN);

    mv.visitLabel(old);
}

From source file:com.alibaba.hotswap.processor.jdk.lang.modifier.PrivateGetDeclaredConstructors.java

License:Open Source License

@Override
public void visitMethodInsn(int opcode, String owner, String name, String desc) {

    if (opcode == Opcodes.INVOKESPECIAL && owner.equals("java/lang/Class")
            && name.equals("getDeclaredConstructors0") && desc.equals("(Z)[Ljava/lang/reflect/Constructor;")) {
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Class", "getName", "()Ljava/lang/String;");
        mv.visitMethodInsn(Opcodes.INVOKESTATIC, Type.getInternalName(HotswapRuntime.class), "hasClassMeta",
                "(Ljava/lang/String;)Z");
        Label old = new Label();
        mv.visitJumpInsn(Opcodes.IFEQ, old);

        mv.visitMethodInsn(Opcodes.INVOKESTATIC, Type.getInternalName(MethodReflectHelper.class),
                "getDeclaredConstructors0", "(Ljava/lang/Class;Z)[Ljava/lang/reflect/Constructor;");
        Label end = new Label();
        mv.visitJumpInsn(Opcodes.GOTO, end);
        mv.visitLabel(old);/*from  w w w  .j  av a2s.  c om*/
        super.visitMethodInsn(opcode, owner, name, desc);
        mv.visitLabel(end);
    } else {
        super.visitMethodInsn(opcode, owner, name, desc);
    }
}

From source file:com.alibaba.hotswap.processor.jdk.lang.modifier.PrivateGetDeclaredFieldsModifier.java

License:Open Source License

@Override
public void visitMethodInsn(int opcode, String owner, String name, String desc) {

    if (opcode == Opcodes.INVOKESPECIAL && owner.equals("java/lang/Class") && name.equals("getDeclaredFields0")
            && desc.equals("(Z)[Ljava/lang/reflect/Field;")) {
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Class", "getName", "()Ljava/lang/String;");
        mv.visitMethodInsn(Opcodes.INVOKESTATIC, Type.getInternalName(HotswapRuntime.class), "hasClassMeta",
                "(Ljava/lang/String;)Z");
        Label old = new Label();
        mv.visitJumpInsn(Opcodes.IFEQ, old);

        // mv.visitInsn(Opcodes.POP2);
        // mv.visitVarInsn(Opcodes.ALOAD, 0);
        // mv.visitVarInsn(Opcodes.ILOAD, 1);
        mv.visitMethodInsn(Opcodes.INVOKESTATIC, Type.getInternalName(FieldReflectHelper.class),
                "privateGetDeclaredFields0", "(Ljava/lang/Class;Z)[Ljava/lang/reflect/Field;");
        Label end = new Label();
        mv.visitJumpInsn(Opcodes.GOTO, end);
        mv.visitLabel(old);/*from   w w  w.  ja  va  2 s .com*/
        super.visitMethodInsn(opcode, owner, name, desc);
        mv.visitLabel(end);
    } else {
        super.visitMethodInsn(opcode, owner, name, desc);
    }
}