- use flock to lock data dir rather than a lock file.

 - removed troublesome global constructor in Mutex initialization.


git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/trunk/qpid@671604 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 46 insertions, 0 deletions

diff --git a/cpp/src/qpid/sys/posix/Mutex.cpp b/cpp/src/qpid/sys/posix/Mutex.cpp
new file mode 100644
index 0000000000..0e1f0d30c2
--- /dev/null
+++ b/cpp/src/qpid/sys/posix/Mutex.cpp
@@ -0,0 +1,46 @@
+/*
+ *
+ * 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/sys/Mutex.h"
+
+namespace qpid {
+namespace sys {
+
+/**
+ * Initialise a recursive mutex attr for use in creating mutexes later
+ * (we use pthread_once to make sure it is initialised exactly once)
+ */
+
+namespace {
+pthread_once_t  onceControl = PTHREAD_ONCE_INIT;
+pthread_mutexattr_t mutexattr;
+	
+void initMutexattr()  {
+    pthread_mutexattr_init(&mutexattr);
+    pthread_mutexattr_settype(&mutexattr, PTHREAD_MUTEX_RECURSIVE);
+}
+}
+
+const pthread_mutexattr_t* Mutex::getAttribute() {
+    pthread_once(&onceControl, initMutexattr);
+    return &mutexattr;
+}
+
+}} // namespace qpid::sys