From 057d6d27d53a55ba19eaff8487727ab5d9df2768 Mon Sep 17 00:00:00 2001
From: Ted Ross <tross@apache.org>
Date: Mon, 31 Aug 2009 20:18:48 +0000
Subject: Added protocol module for codepoint definitions and header handling.
 Fixed a deadlock case in ResilientConnection. Added more code to the
 ConsoleEngine implementation.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@809728 13f79535-47bb-0310-9956-ffa450edef68
---
 qpid/cpp/src/qmf/SequenceManager.cpp | 50 ++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 qpid/cpp/src/qmf/SequenceManager.cpp

(limited to 'qpid/cpp/src/qmf/SequenceManager.cpp')

diff --git a/qpid/cpp/src/qmf/SequenceManager.cpp b/qpid/cpp/src/qmf/SequenceManager.cpp
new file mode 100644
index 0000000000..f51ce9d8b8
--- /dev/null
+++ b/qpid/cpp/src/qmf/SequenceManager.cpp
@@ -0,0 +1,50 @@
+/*
+ * 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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