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/*
* 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 "qmf/SequenceManager.h"
using namespace std;
using namespace qmf;
using namespace qpid::sys;
SequenceManager::SequenceManager() : nextSequence(1) {}
uint32_t SequenceManager::reserve(SequenceContext* ctx)
{
Mutex::ScopedLock _lock(lock);
uint32_t seq = nextSequence;
while (contextMap.find(seq) != contextMap.end())
seq = seq < 0xFFFFFFFF ? seq + 1 : 1;
nextSequence = seq < 0xFFFFFFFF ? seq + 1 : 1;
contextMap[seq] = ctx;
return seq;
}
void SequenceManager::release(uint32_t sequence)
{
Mutex::ScopedLock _lock(lock);
map<uint32_t, SequenceContext*>::iterator iter = contextMap.find(sequence);
if (iter != contextMap.end()) {
if (iter->second != 0)
iter->second->complete();
contextMap.erase(iter);
}
}
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