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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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