Move mutex.h from core to utils

Move core/sym_algo.{h,cpp} to sym_algo

2 files changed, 55 insertions, 0 deletions

diff --git a/src/utils/info.txt b/src/utils/info.txt
index 0f0a18a35..127ea5e2f 100644
--- a/src/utils/info.txt
+++ b/src/utils/info.txt
@@ -24,6 +24,7 @@ entropy.cpp
 loadstor.h
 mem_ops.h
 mlock.cpp
+mutex.h
 parsing.cpp
 parsing.h
 rotate.h
diff --git a/src/utils/mutex.h b/src/utils/mutex.h
new file mode 100644
index 000000000..e30b48eb0
--- /dev/null
+++ b/src/utils/mutex.h
@@ -0,0 +1,54 @@
+/*************************************************
+* Mutex Header File                              *
+* (C) 1999-2007 Jack Lloyd                       *
+*************************************************/
+
+#ifndef BOTAN_MUTEX_H__
+#define BOTAN_MUTEX_H__
+
+#include <botan/exceptn.h>
+
+namespace Botan {
+
+/*************************************************
+* Mutex Base Class                               *
+*************************************************/
+class BOTAN_DLL Mutex
+   {
+   public:
+      virtual void lock() = 0;
+      virtual void unlock() = 0;
+      virtual ~Mutex() {}
+   };
+
+/*************************************************
+* Mutex Factory                                  *
+*************************************************/
+class BOTAN_DLL Mutex_Factory
+   {
+   public:
+      virtual Mutex* make() = 0;
+      virtual ~Mutex_Factory() {}
+   };
+
+/*************************************************
+* Mutex Holding Class                            *
+*************************************************/
+class BOTAN_DLL Mutex_Holder
+   {
+   public:
+      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