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tag: r1.8.3-rc1
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// 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
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