Example usage for org.objectweb.asm.tree.analysis BasicValue getSize

Introduction

In this page you can find the example usage for org.objectweb.asm.tree.analysis BasicValue getSize.

Prototype

@Override
    public int getSize() 

Source Link

Usage

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

License:Open Source License

private void emitNewAndDup(MethodVisitor mv, Frame frame, int stackIndex, MethodInsnNode min) {
    int arguments = frame.getStackSize() - stackIndex - 1;
    int neededLocals = 0;
    for (int i = arguments; i >= 1; i--) {
        BasicValue v = (BasicValue) frame.getStack(stackIndex + i);
        mv.visitVarInsn(v.getType().getOpcode(Opcodes.ISTORE), lvarStack + NUM_LOCALS + neededLocals);
        neededLocals += v.getSize();
    }/*from ww w  .j a  va 2 s .co  m*/
    db.log(LogLevel.DEBUG, "Inserting NEW & DUP for constructor call %s%s with %d arguments (%d locals)",
            min.owner, min.desc, arguments, neededLocals);
    if (additionalLocals < neededLocals) {
        additionalLocals = neededLocals;
    }
    ((NewValue) frame.getStack(stackIndex - 1)).insn.accept(mv);
    ((NewValue) frame.getStack(stackIndex)).insn.accept(mv);
    for (int i = 1; i <= arguments; i++) {
        BasicValue v = (BasicValue) frame.getStack(stackIndex + i);
        neededLocals -= v.getSize();
        mv.visitVarInsn(v.getType().getOpcode(Opcodes.ILOAD), lvarStack + NUM_LOCALS + neededLocals);
    }
}

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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);/*from  w  w w . j  a va2s.  co  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);
            }
        }
    }
}

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