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// **********************************************************************
//
// Copyright (c) 2003-2010 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#include <Ice/Ice.h>
#include <NrvoI.h>
using namespace std;
NrvoI::NrvoI() :
_stringSeq(10, "hello")
{
}
//
// NRVO (Named Return Value Optimization):
// the return value is a stack-allocated variable,
// and there is only a single return path.
//
Demo::StringSeq
NrvoI::op1(const Ice::Current&)
{
cout << "running op1" << endl;
//
// Not "return MyStringSeq(10, "hello")", since this lacks a name.
//
MyStringSeq seq = MyStringSeq(10, "hello");
return seq;
}
//
// No optimization: the return value is a data member.
//
Demo::StringSeq
NrvoI::op2(const Ice::Current&)
{
cout << "running op2" << endl;
return _stringSeq;
}
//
// Operation with multiple return paths.
//
Demo::StringSeq
NrvoI::op3(int size, const Ice::Current&)
{
cout << "running op3" << endl;
if(size < 10)
{
//
// RVO (Return Value Optimization): return value
// is constructed in place.
//
return MyStringSeq(size, "hello");
}
//
// No optimization: NRVO requires a single return path.
//
MyStringSeq seq = MyStringSeq(10, "hello");
return seq;
}
void
NrvoI::shutdown(const Ice::Current& c)
{
c.adapter->getCommunicator()->shutdown();
}
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