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-rw-r--r--Attic/mutex/mutex.h71
1 files changed, 71 insertions, 0 deletions
diff --git a/Attic/mutex/mutex.h b/Attic/mutex/mutex.h
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+/*
+* Mutex
+* (C) 1999-2007 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#ifndef BOTAN_MUTEX_H__
+#define BOTAN_MUTEX_H__
+
+#include <botan/exceptn.h>
+
+namespace Botan {
+
+/**
+* Mutex Base Class
+*/
+class Mutex
+ {
+ public:
+ /**
+ * Lock the mutex
+ */
+ virtual void lock() = 0;
+
+ /**
+ * Unlock the mutex
+ */
+ virtual void unlock() = 0;
+ virtual ~Mutex() {}
+ };
+
+/**
+* Mutex Factory
+*/
+class Mutex_Factory
+ {
+ public:
+ /**
+ * @return newly allocated mutex
+ */
+ virtual Mutex* make() = 0;
+
+ virtual ~Mutex_Factory() {}
+ };
+
+/**
+* Mutex Holding Class for RAII
+*/
+class Mutex_Holder
+ {
+ public:
+ /**
+ * Hold onto a mutex until we leave scope
+ * @param m the mutex to lock
+ */
+ Mutex_Holder(Mutex* m) : mux(m)
+ {
+ if(!mux)
+ throw Invalid_Argument("Mutex_Holder: Argument was NULL");
+ mux->lock();
+ }
+
+ ~Mutex_Holder() { mux->unlock(); }
+ private:
+ Mutex* mux;
+ };
+
+}
+
+#endif