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/*
* Copyright (C) 2010-2018 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <wtf/Assertions.h>
#include "Connection.h"
#include <wtf/UniqueRef.h>
namespace IPC {
class MessageSender {
public:
virtual ~MessageSender();
template<typename T> bool send(T&& message, OptionSet<SendOption> sendOptions = { })
{
return send(WTFMove(message), messageSenderDestinationID(), sendOptions);
}
template<typename T> bool send(T&& message, uint64_t destinationID, OptionSet<SendOption> sendOptions = { })
{
static_assert(!T::isSync, "Message is sync!");
auto encoder = makeUniqueRef<Encoder>(T::name(), destinationID);
encoder.get() << message.arguments();
return sendMessage(WTFMove(encoder), sendOptions);
}
template<typename T, typename U>
bool send(T&& message, ObjectIdentifier<U> destinationID, OptionSet<SendOption> sendOptions = { })
{
return send(WTFMove(message), destinationID.toUInt64(), sendOptions);
}
using SendSyncResult = Connection::SendSyncResult;
template<typename T>
SendSyncResult sendSync(T&& message, typename T::Reply&& reply, Timeout timeout = Seconds::infinity(), OptionSet<SendSyncOption> sendSyncOptions = { })
{
static_assert(T::isSync, "Message is not sync!");
return sendSync(WTFMove(message), WTFMove(reply), messageSenderDestinationID(), timeout, sendSyncOptions);
}
template<typename T>
SendSyncResult sendSync(T&& message, typename T::Reply&& reply, uint64_t destinationID, Timeout timeout = Timeout::infinity(), OptionSet<SendSyncOption> sendSyncOptions = { })
{
if (auto* connection = messageSenderConnection())
return connection->sendSync(WTFMove(message), WTFMove(reply), destinationID, timeout, sendSyncOptions);
return { };
}
template<typename T, typename U>
SendSyncResult sendSync(T&& message, typename T::Reply&& reply, ObjectIdentifier<U> destinationID, Timeout timeout = Timeout::infinity(), OptionSet<SendSyncOption> sendSyncOptions = { })
{
return sendSync(WTFMove(message), WTFMove(reply), destinationID.toUInt64(), timeout, sendSyncOptions);
}
template<typename T, typename C>
uint64_t sendWithAsyncReply(T&& message, C&& completionHandler, OptionSet<SendOption> sendOptions = { })
{
return sendWithAsyncReply(WTFMove(message), WTFMove(completionHandler), messageSenderDestinationID(), sendOptions);
}
template<typename T, typename C>
uint64_t sendWithAsyncReply(T&& message, C&& completionHandler, uint64_t destinationID, OptionSet<SendOption> sendOptions = { })
{
static_assert(!T::isSync, "Async message expected");
auto encoder = makeUniqueRef<IPC::Encoder>(T::name(), destinationID);
uint64_t listenerID = IPC::nextAsyncReplyHandlerID();
encoder.get() << listenerID;
encoder.get() << WTFMove(message).arguments();
sendMessage(WTFMove(encoder), sendOptions, {{ [completionHandler = WTFMove(completionHandler)] (IPC::Decoder* decoder) mutable {
if (decoder && decoder->isValid())
T::callReply(*decoder, WTFMove(completionHandler));
else
T::cancelReply(WTFMove(completionHandler));
}, listenerID }});
return listenerID;
}
virtual bool sendMessage(UniqueRef<Encoder>&&, OptionSet<SendOption>, std::optional<std::pair<CompletionHandler<void(IPC::Decoder*)>, uint64_t>>&& = std::nullopt);
private:
virtual Connection* messageSenderConnection() const = 0;
virtual uint64_t messageSenderDestinationID() const = 0;
};
} // namespace IPC
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