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Diffstat (limited to 'cpp/src/qpid/cluster/OutputInterceptor.cpp')
-rw-r--r-- | cpp/src/qpid/cluster/OutputInterceptor.cpp | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/cpp/src/qpid/cluster/OutputInterceptor.cpp b/cpp/src/qpid/cluster/OutputInterceptor.cpp deleted file mode 100644 index 2cd1cf9a83..0000000000 --- a/cpp/src/qpid/cluster/OutputInterceptor.cpp +++ /dev/null @@ -1,125 +0,0 @@ -/* - * - * Licensed to the Apache Software Foundation (ASF) under one - * or more contributor license agreements. See the NOTICE file - * distributed with this work for additional information - * regarding copyright ownership. The ASF licenses this file - * to you under the Apache License, Version 2.0 (the - * "License"); you may not use this file except in compliance - * with the License. You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, - * software distributed under the License is distributed on an - * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY - * KIND, either express or implied. See the License for the - * specific language governing permissions and limitations - * under the License. - * - */ -#include "qpid/cluster/OutputInterceptor.h" -#include "qpid/cluster/Connection.h" -#include "qpid/cluster/Cluster.h" -#include "qpid/framing/ClusterConnectionDeliverDoOutputBody.h" -#include "qpid/framing/AMQFrame.h" -#include "qpid/log/Statement.h" -#include <boost/current_function.hpp> - - -namespace qpid { -namespace cluster { - -using namespace framing; -using namespace std; - -NoOpConnectionOutputHandler OutputInterceptor::discardHandler; - -OutputInterceptor::OutputInterceptor(Connection& p, sys::ConnectionOutputHandler& h) - : parent(p), closing(false), next(&h), sendMax(2048), sent(0), sentDoOutput(false) -{} - -void OutputInterceptor::send(framing::AMQFrame& f) { - sys::Mutex::ScopedLock l(lock); - next->send(f); -} - -void OutputInterceptor::activateOutput() { - sys::Mutex::ScopedLock l(lock); - if (parent.isCatchUp()) - next->activateOutput(); - else - sendDoOutput(sendMax, l); -} - -void OutputInterceptor::abort() { - sys::Mutex::ScopedLock l(lock); - if (parent.isLocal()) { - next->abort(); - } -} - -void OutputInterceptor::giveReadCredit(int32_t credit) { - sys::Mutex::ScopedLock l(lock); - next->giveReadCredit(credit); -} - -// Called in write thread when the IO layer has no more data to write. -// We only process IO callbacks in the write thread during catch-up. -// Normally we run doOutput only on delivery of doOutput requests. -bool OutputInterceptor::doOutput() { - parent.doCatchupIoCallbacks(); - return false; -} - -// Send output up to limit, calculate new limit. -void OutputInterceptor::deliverDoOutput(uint32_t limit) { - sys::Mutex::ScopedLock l(lock); - sentDoOutput = false; - sendMax = limit; - size_t newLimit = limit; - if (parent.isLocal()) { - size_t buffered = next->getBuffered(); - if (buffered == 0 && sent == sendMax) // Could have sent more, increase the limit. - newLimit = sendMax*2; - else if (buffered > 0 && sent > 1) // Data left unsent, reduce the limit. - newLimit = (sendMax + sent) / 2; - } - sent = 0; - while (sent < limit) { - { - sys::Mutex::ScopedUnlock u(lock); - if (!parent.getBrokerConnection()->doOutput()) break; - } - ++sent; - } - if (sent == limit) sendDoOutput(newLimit, l); -} - -void OutputInterceptor::sendDoOutput(size_t newLimit, const sys::Mutex::ScopedLock&) { - if (parent.isLocal() && !sentDoOutput && !closing && parent.isAnnounced()) { - sentDoOutput = true; - parent.getCluster().getMulticast().mcastControl( - ClusterConnectionDeliverDoOutputBody(ProtocolVersion(), newLimit), - parent.getId()); - } -} - -// Called in connection thread when local connection closes. -void OutputInterceptor::closeOutput() { - sys::Mutex::ScopedLock l(lock); - closing = true; - next = &discardHandler; -} - -void OutputInterceptor::close() { - sys::Mutex::ScopedLock l(lock); - next->close(); -} - -size_t OutputInterceptor::getBuffered() const { - sys::Mutex::ScopedLock l(lock); - return next->getBuffered(); -} - -}} // namespace qpid::cluster |