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// **********************************************************************
//
// Copyright (c) 2003-2015 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.
//
// **********************************************************************
#ifndef ICE_ASYNC_RESULT_H
#define ICE_ASYNC_RESULT_H
#include <IceUtil/Monitor.h>
#include <IceUtil/Mutex.h>
#include <IceUtil/UniquePtr.h>
#include <Ice/LocalObject.h>
#include <Ice/CommunicatorF.h>
#include <Ice/ConnectionF.h>
#include <Ice/ProxyF.h>
#include <Ice/InstanceF.h>
#include <Ice/RequestHandlerF.h>
#include <Ice/AsyncResultF.h>
#include <Ice/ObserverHelper.h>
#include <Ice/InputStream.h>
#include <Ice/VirtualShared.h>
namespace IceInternal
{
class CallbackBase;
ICE_DEFINE_PTR(CallbackBasePtr, CallbackBase);
}
namespace Ice
{
class ICE_API AsyncResult : private IceUtil::noncopyable,
#ifdef ICE_CPP11_MAPPING
public ::std::enable_shared_from_this<::Ice::AsyncResult>
#else
public Ice::LocalObject
#endif
{
public:
#ifdef ICE_CPP11_MAPPING
AsyncResult(const CommunicatorPtr&, const IceInternal::InstancePtr&, const std::string&,
const IceInternal::CallbackBasePtr&);
#else
AsyncResult(const CommunicatorPtr&, const IceInternal::InstancePtr&, const std::string&,
const IceInternal::CallbackBasePtr&, const LocalObjectPtr&);
#endif
virtual ~AsyncResult(); // Must be heap-allocated
void cancel();
Int getHash() const;
CommunicatorPtr getCommunicator() const;
virtual ConnectionPtr getConnection() const;
virtual ObjectPrxPtr getProxy() const;
bool isCompleted() const;
void waitForCompleted();
bool isSent() const;
void waitForSent();
void throwLocalException() const;
bool sentSynchronously() const;
#ifndef ICE_CPP11_MAPPING
LocalObjectPtr getCookie() const;
#endif
const std::string& getOperation() const;
::Ice::InputStream* __startReadParams()
{
_is.startEncapsulation();
return &_is;
}
void __endReadParams()
{
_is.endEncapsulation();
}
void __readEmptyParams()
{
_is.skipEmptyEncapsulation();
}
void __readParamEncaps(const ::Ice::Byte*& encaps, ::Ice::Int& sz)
{
_is.readEncapsulation(encaps, sz);
}
void __throwUserException();
bool __wait();
static void __check(const AsyncResultPtr&, const ::IceProxy::Ice::Object*, const ::std::string&);
static void __check(const AsyncResultPtr&, const Connection*, const ::std::string&);
static void __check(const AsyncResultPtr&, const Communicator*, const ::std::string&);
protected:
static void __check(const AsyncResultPtr&, const ::std::string&);
bool sent(bool);
bool finished(bool);
bool finished(const Exception&);
void invokeSentAsync();
void invokeCompletedAsync();
void invokeSent();
void invokeCompleted();
void cancel(const LocalException&);
virtual void cancelable(const IceInternal::CancellationHandlerPtr&);
void checkCanceled();
void warning(const std::exception&) const;
void warning() const;
//
// This virtual method is necessary for the communicator flush
// batch requests implementation.
//
virtual IceInternal::InvocationObserver& getObserver()
{
return _observer;
}
const IceInternal::InstancePtr _instance;
IceInternal::InvocationObserver _observer;
Ice::ConnectionPtr _cachedConnection;
bool _sentSynchronously;
Ice::InputStream _is;
IceUtil::Monitor<IceUtil::Mutex> _monitor;
private:
const CommunicatorPtr _communicator;
const std::string& _operation;
const IceInternal::CallbackBasePtr _callback;
const LocalObjectPtr _cookie;
#ifdef ICE_CPP11_MAPPING
std::exception_ptr _exception;
#else
IceUtil::UniquePtr<Exception> _exception;
#endif
IceInternal::CancellationHandlerPtr _cancellationHandler;
#ifdef ICE_CPP11_MAPPING
std::exception_ptr _cancellationException;
#else
IceUtil::UniquePtr<Ice::LocalException> _cancellationException;
#endif
static const unsigned char OK;
static const unsigned char Done;
static const unsigned char Sent;
static const unsigned char EndCalled;
static const unsigned char Canceled;
unsigned char _state;
};
}
namespace IceInternal
{
//
// Base class for all callbacks.
//
class ICE_API CallbackBase : public Ice::EnableSharedFromThis<CallbackBase>
{
public:
void checkCallback(bool, bool);
virtual void completed(const ::Ice::AsyncResultPtr&) const = 0;
#ifndef ICE_CPP11_MAPPING
virtual CallbackBasePtr verify(const ::Ice::LocalObjectPtr&) = 0;
#endif
virtual void sent(const ::Ice::AsyncResultPtr&) const = 0;
virtual bool hasSentCallback() const = 0;
};
//
// Base class for generic callbacks.
//
class ICE_API GenericCallbackBase : public virtual CallbackBase
{
};
//
// See comments in OutgoingAsync.cpp
//
extern ICE_API CallbackBasePtr __dummyCallback;
//
// Generic callback template that requires the caller to down-cast the
// proxy and the cookie that are obtained from the AsyncResult.
//
template<class T>
class AsyncCallback : public GenericCallbackBase
{
public:
typedef T callback_type;
typedef IceUtil::Handle<T> TPtr;
typedef void (T::*Callback)(const ::Ice::AsyncResultPtr&);
AsyncCallback(const TPtr& instance, Callback cb, Callback sentcb = 0) :
_callback(instance), _completed(cb), _sent(sentcb)
{
checkCallback(instance, cb != 0);
}
virtual void completed(const ::Ice::AsyncResultPtr& result) const
{
(_callback.get()->*_completed)(result);
}
virtual CallbackBasePtr verify(const ::Ice::LocalObjectPtr&)
{
return this; // Nothing to do, the cookie is not type-safe.
}
virtual void sent(const ::Ice::AsyncResultPtr& result) const
{
if(_sent)
{
(_callback.get()->*_sent)(result);
}
}
virtual bool hasSentCallback() const
{
return _sent != 0;
}
private:
TPtr _callback;
Callback _completed;
Callback _sent;
};
}
namespace Ice
{
#ifndef ICE_CPP11_MAPPING
typedef IceUtil::Handle< ::IceInternal::GenericCallbackBase> CallbackPtr;
template<class T> CallbackPtr
newCallback(const IceUtil::Handle<T>& instance,
void (T::*cb)(const AsyncResultPtr&),
void (T::*sentcb)(const AsyncResultPtr&) = 0)
{
return new ::IceInternal::AsyncCallback<T>(instance, cb, sentcb);
}
template<class T> CallbackPtr
newCallback(T* instance,
void (T::*cb)(const AsyncResultPtr&),
void (T::*sentcb)(const AsyncResultPtr&) = 0)
{
return new ::IceInternal::AsyncCallback<T>(instance, cb, sentcb);
}
#endif
}
//
// Operation callbacks are specified in Proxy.h
//
#endif
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