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tag: r1.8.4-rc0
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// @file timer.h
/* Copyright 2010 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
#include "time_support.h"
namespace mongo {
/**
* simple scoped timer
*/
class Timer {
public:
Timer() {
reset();
}
Timer( unsigned long long start ) {
old = start;
}
int seconds() const {
return (int)(micros() / 1000000);
}
int millis() const {
return (long)(micros() / 1000);
}
unsigned long long micros() const {
unsigned long long n = curTimeMicros64();
return n - old;
}
unsigned long long micros(unsigned long long & n) const { // returns cur time in addition to timer result
n = curTimeMicros64();
return n - old;
}
unsigned long long startTime() {
return old;
}
void reset() {
old = curTimeMicros64();
}
private:
unsigned long long old;
};
} // namespace mongo
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