1 files changed, 91 insertions, 0 deletions
diff --git a/qpid/cpp/include/qpid/sys/Mutex.h b/qpid/cpp/include/qpid/sys/Mutex.h
new file mode 100644
index 0000000000..43a83d4fc3
--- /dev/null
+++ b/qpid/cpp/include/qpid/sys/Mutex.h
@@ -0,0 +1,91 @@
+#ifndef _sys_Mutex_h
+#define _sys_Mutex_h
+
+/*
+ *
+ * Copyright (c) 2006 The Apache Software Foundation
+ *
+ * Licensed 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.
+ *
+ */
+
+namespace qpid {
+namespace sys {
+
+/**
+ * Scoped lock template: calls lock() in ctor, unlock() in dtor.
+ * L can be any class with lock() and unlock() functions.
+ */
+template <class L>
+class ScopedLock
+{
+  public:
+    ScopedLock(L& l) : mutex(l) { l.lock(); }
+    ~ScopedLock() { mutex.unlock(); }
+  private:
+    L& mutex;
+};
+
+template <class L>
+class ScopedUnlock
+{
+  public:
+    ScopedUnlock(L& l) : mutex(l) { l.unlock(); }
+    ~ScopedUnlock() { mutex.lock(); }
+  private:
+    L& mutex;
+};
+
+template <class L>
+class ScopedRlock
+{
+  public:
+    ScopedRlock(L& l) : mutex(l) { l.rlock(); }
+    ~ScopedRlock() { mutex.unlock(); }
+  private:
+    L& mutex;
+};
+
+template <class L>
+class ScopedWlock
+{
+  public:
+    ScopedWlock(L& l) : mutex(l) { l.wlock(); }
+    ~ScopedWlock() { mutex.unlock(); }
+  private:
+    L& mutex;
+};
+
+template <class L>
+class ConditionalScopedLock
+{
+  public:
+    ConditionalScopedLock(L& l) : mutex(l) { acquired = l.trylock(); }
+    ~ConditionalScopedLock() { if (acquired) mutex.unlock(); }
+    bool lockAcquired() { return acquired; }
+  private:
+    L& mutex;
+    bool acquired;
+};
+
+}}
+
+#ifdef USE_APR_PLATFORM
+#include "apr/Mutex.h"
+#elif defined (_WIN32)
+#include "windows/Mutex.h"
+#else
+#include "posix/Mutex.h"
+#endif
+
+#endif  /*!_sys_Mutex_h*/