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// progress_meter.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
#include <boost/noncopyable.hpp>
#include <string>
namespace mongo {
class ProgressMeter : boost::noncopyable {
public:
ProgressMeter(unsigned long long total,
int secondsBetween = 3,
int checkInterval = 100,
std::string units = "",
std::string name = "Progress")
: _units(units)
, _name(name) {
reset( total , secondsBetween , checkInterval );
}
ProgressMeter() : _active(0), _units(""), _name("Progress") {}
// typically you do ProgressMeterHolder
void reset( unsigned long long total , int secondsBetween = 3 , int checkInterval = 100 );
void finished() { _active = 0; }
bool isActive() const { return _active; }
/**
* @param n how far along we are relative to the total # we set in CurOp::setMessage
* @return if row was printed
*/
bool hit( int n = 1 );
void setUnits( const std::string& units ) { _units = units; }
std::string getUnit() const { return _units; }
void setName(std::string name) { _name = name; }
std::string getName() const { return _name; }
void setTotalWhileRunning( unsigned long long total ) {
_total = total;
}
unsigned long long done() const { return _done; }
unsigned long long hits() const { return _hits; }
unsigned long long total() const { return _total; }
std::string toString() const;
bool operator==( const ProgressMeter& other ) const { return this == &other; }
private:
bool _active;
unsigned long long _total;
int _secondsBetween;
int _checkInterval;
unsigned long long _done;
unsigned long long _hits;
int _lastTime;
std::string _units;
std::string _name;
};
// e.g.:
// CurOp * op = cc().curop();
// ProgressMeterHolder pm(op->setMessage("index: (1/3) external sort", "Index: External Sort Progress", d->stats.nrecords, 10));
// loop { pm.hit(); }
class ProgressMeterHolder : boost::noncopyable {
public:
ProgressMeterHolder( ProgressMeter& pm )
: _pm( pm ) {
}
~ProgressMeterHolder() {
_pm.finished();
}
ProgressMeter* operator->() { return &_pm; }
ProgressMeter* get() { return &_pm; }
bool hit( int n = 1 ) { return _pm.hit( n ); }
void finished() { _pm.finished(); }
bool operator==( const ProgressMeter& other ) { return _pm == other; }
private:
ProgressMeter& _pm;
};
}
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