diff options
Diffstat (limited to 'cpp/src/qpid/broker/SimpleQueue.h')
-rw-r--r-- | cpp/src/qpid/broker/SimpleQueue.h | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/cpp/src/qpid/broker/SimpleQueue.h b/cpp/src/qpid/broker/SimpleQueue.h new file mode 100644 index 0000000000..c2f21076cd --- /dev/null +++ b/cpp/src/qpid/broker/SimpleQueue.h @@ -0,0 +1,155 @@ +/* + * 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. + */ + +/** + * \file SimpleQueue.h + */ + +#ifndef qpid_broker_SimpleQueue_h_ +#define qpid_broker_SimpleQueue_h_ + +#include "qpid/asyncStore/AtomicCounter.h" // AsyncOpCounter +#include "qpid/broker/AsyncStore.h" // DataSource +#include "qpid/broker/PersistableQueue.h" +#include "qpid/broker/QueueHandle.h" +#include "qpid/sys/Monitor.h" + +#include <boost/intrusive_ptr.hpp> +#include <boost/shared_ptr.hpp> +#include <boost/enable_shared_from_this.hpp> + +namespace qpid { + +namespace framing { +class FieldTable; +} + +namespace broker { + +class AsyncResultQueue; +class QueueAsyncContext; +class SimpleConsumer; +class SimpleMessages; +class SimpleQueuedMessage; +class SimpleMessage; +class SimpleTxnBuffer; + +class SimpleQueue : public boost::enable_shared_from_this<SimpleQueue>, + public PersistableQueue, + public DataSource +{ +public: + SimpleQueue(const std::string& name, + const qpid::framing::FieldTable& args, + AsyncStore* store, + AsyncResultQueue& arq); + virtual ~SimpleQueue(); + + const QueueHandle& getHandle() const; + QueueHandle& getHandle(); + AsyncStore* getStore(); + + void asyncCreate(); + static void handleAsyncCreateResult(const AsyncResultHandle* const arh); + void asyncDestroy(const bool deleteQueue); + static void handleAsyncDestroyResult(const AsyncResultHandle* const arh); + + // --- Methods in msg handling path from qpid::Queue --- + void deliver(boost::intrusive_ptr<SimpleMessage> msg); + bool dispatch(SimpleConsumer& sc); + bool enqueue(boost::shared_ptr<SimpleQueuedMessage> qm); + bool enqueue(SimpleTxnBuffer* tb, + boost::shared_ptr<SimpleQueuedMessage> qm); + bool dequeue(boost::shared_ptr<SimpleQueuedMessage> qm); + bool dequeue(SimpleTxnBuffer* tb, + boost::shared_ptr<SimpleQueuedMessage> qm); + void process(boost::intrusive_ptr<SimpleMessage> msg); + void enqueueAborted(boost::intrusive_ptr<SimpleMessage> msg); + + // --- Interface qpid::broker::Persistable --- + virtual void encode(qpid::framing::Buffer& buffer) const; + virtual uint32_t encodedSize() const; + virtual uint64_t getPersistenceId() const; + virtual void setPersistenceId(uint64_t persistenceId) const; + + // --- Interface qpid::broker::PersistableQueue --- + virtual void flush(); + virtual const std::string& getName() const; + virtual void setExternalQueueStore(ExternalQueueStore* inst); + + // --- Interface qpid::broker::DataStore --- + virtual uint64_t getSize(); + virtual void write(char* target); + +private: + static TxnHandle s_nullTxnHandle; // used for non-txn operations + + const std::string m_name; + AsyncStore* m_store; + AsyncResultQueue& m_resultQueue; + qpid::asyncStore::AsyncOpCounter m_asyncOpCounter; // TODO: change this to non-async store counter! + mutable uint64_t m_persistenceId; + std::string m_persistableData; + QueueHandle m_queueHandle; + bool m_destroyPending; + bool m_destroyed; + + // --- Members & methods in msg handling path copied from qpid::Queue --- + struct UsageBarrier { + SimpleQueue& m_parent; + uint32_t m_count; + qpid::sys::Monitor m_monitor; + UsageBarrier(SimpleQueue& q); + bool acquire(); + void release(); + void destroy(); + }; + struct ScopedUse { + UsageBarrier& m_barrier; + const bool m_acquired; + ScopedUse(UsageBarrier& b); + ~ScopedUse(); + }; + UsageBarrier m_barrier; + std::auto_ptr<SimpleMessages> m_messages; + void push(boost::shared_ptr<SimpleQueuedMessage> qm, + bool isRecovery = false); + + // -- Async ops --- + bool asyncEnqueue(SimpleTxnBuffer* tb, + boost::shared_ptr<SimpleQueuedMessage> qm); + static void handleAsyncEnqueueResult(const AsyncResultHandle* const arh); + bool asyncDequeue(SimpleTxnBuffer* tb, + boost::shared_ptr<SimpleQueuedMessage> qm); + static void handleAsyncDequeueResult(const AsyncResultHandle* const arh); + + // --- Async op counter --- + void destroyCheck(const std::string& opDescr) const; + + // --- Async op completions (called through handleAsyncResult) --- + void createComplete(const boost::shared_ptr<QueueAsyncContext> qc); + void flushComplete(const boost::shared_ptr<QueueAsyncContext> qc); + void destroyComplete(const boost::shared_ptr<QueueAsyncContext> qc); + void enqueueComplete(const boost::shared_ptr<QueueAsyncContext> qc); + void dequeueComplete(const boost::shared_ptr<QueueAsyncContext> qc); +}; + +}} // namespace qpid::broker + +#endif // qpid_broker_SimpleQueue_h_ |