1 files changed, 69 insertions, 0 deletions
diff --git a/lib/libstate/global_state.h b/lib/libstate/global_state.h
new file mode 100644
index 000000000..486aed17e
--- /dev/null
+++ b/lib/libstate/global_state.h
@@ -0,0 +1,69 @@
+/*
+* Global State Management
+* (C) 2010 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#ifndef BOTAN_GLOBAL_STATE_H__
+#define BOTAN_GLOBAL_STATE_H__
+
+#include <botan/build.h>
+
+namespace Botan {
+
+/*
+* Forward declare to avoid recursive dependency between this header
+* and libstate.h
+*/
+class Library_State;
+
+/**
+* Namespace for management of the global state
+*/
+namespace Global_State_Management {
+
+/**
+* Access the global library state
+* @return reference to the global library state
+*/
+BOTAN_DLL Library_State& global_state();
+
+/**
+* Set the global state object
+* @param state the new global state to use
+*/
+BOTAN_DLL void set_global_state(Library_State* state);
+
+/**
+* Set the global state object unless it is already set
+* @param state the new global state to use
+* @return true if the state parameter is now being used as the global
+*         state, or false if one was already set, in which case the
+*         parameter was deleted immediately
+*/
+BOTAN_DLL bool set_global_state_unless_set(Library_State* state);
+
+/**
+* Swap the current state for another
+* @param new_state the new state object to use
+* @return previous state (or NULL if none)
+*/
+BOTAN_DLL Library_State* swap_global_state(Library_State* new_state);
+
+/**
+* Query if the library is currently initialized
+* @return true iff the library is initialized
+*/
+BOTAN_DLL bool global_state_exists();
+
+}
+
+/*
+* Insert into Botan ns for convenience/backwards compatability
+*/
+using Global_State_Management::global_state;
+
+}
+
+#endif