Imported Upstream version 1.3.1

1 files changed, 42 insertions, 0 deletions

diff --git a/db/nonce.h b/db/nonce.h
new file mode 100644
index 0000000..593931f
--- /dev/null
+++ b/db/nonce.h
@@ -0,0 +1,42 @@
+// nonce.h
+
+/*    Copyright 2009 10gen Inc.
+ *
+ *    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.
+ */
+
+#pragma once
+
+namespace mongo {
+
+    typedef unsigned long long nonce;
+    
+    struct Security {
+        Security();
+
+        nonce getNonce();
+
+		/** safe during global var initialization */
+		nonce getNonceInitSafe() { 
+			init();
+			return getNonce();
+		}
+	private:
+        ifstream *_devrandom;
+		static bool _initialized;
+		void init(); // can call more than once
+    };
+    
+    extern Security security;
+        
+} // namespace mongo