1 files changed, 96 insertions, 0 deletions
diff --git a/qpid/cpp/src/qmf/engine/SequenceManager.cpp b/qpid/cpp/src/qmf/engine/SequenceManager.cpp
new file mode 100644
index 0000000000..4a4644a8b9
--- /dev/null
+++ b/qpid/cpp/src/qmf/engine/SequenceManager.cpp
@@ -0,0 +1,96 @@
+/*
+ * 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/engine/SequenceManager.h"
+
+using namespace std;
+using namespace qmf::engine;
+using namespace qpid::sys;
+
+SequenceManager::SequenceManager() : nextSequence(1) {}
+
+void SequenceManager::setUnsolicitedContext(SequenceContext::Ptr ctx)
+{
+    unsolicitedContext = ctx;
+}
+
+uint32_t SequenceManager::reserve(SequenceContext::Ptr ctx)
+{
+    Mutex::ScopedLock _lock(lock);
+    if (ctx.get() == 0)
+        ctx = unsolicitedContext;
+    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;
+    ctx->reserve();
+    return seq;
+}
+
+void SequenceManager::release(uint32_t sequence)
+{
+    Mutex::ScopedLock _lock(lock);
+
+    if (sequence == 0) {
+        if (unsolicitedContext.get() != 0)
+            unsolicitedContext->release();
+        return;
+    }
+
+    map<uint32_t, SequenceContext::Ptr>::iterator iter = contextMap.find(sequence);
+    if (iter != contextMap.end()) {
+        if (iter->second != 0)
+            iter->second->release();
+        contextMap.erase(iter);
+    }
+}
+
+void SequenceManager::releaseAll()
+{
+    Mutex::ScopedLock _lock(lock);
+    contextMap.clear();
+}
+
+void SequenceManager::dispatch(uint8_t opcode, uint32_t sequence, const string& routingKey, qpid::framing::Buffer& buffer)
+{
+    Mutex::ScopedLock _lock(lock);
+    bool done;
+
+    if (sequence == 0) {
+        if (unsolicitedContext.get() != 0) {
+            done = unsolicitedContext->handleMessage(opcode, sequence, routingKey, buffer);
+            if (done)
+                unsolicitedContext->release();
+        }
+        return;
+    }
+
+    map<uint32_t, SequenceContext::Ptr>::iterator iter = contextMap.find(sequence);
+    if (iter != contextMap.end()) {
+        if (iter->second != 0) {
+            done = iter->second->handleMessage(opcode, sequence, routingKey, buffer);
+            if (done) {
+                iter->second->release();
+                contextMap.erase(iter);
+            }
+        }
+    }
+}
+