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// progress_meter.h
/* Copyright 2009 10gen Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects
* for all of the code used other than as permitted herein. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you do not
* wish to do so, delete this exception statement from your version. If you
* delete this exception statement from all source files in the program,
* then also delete it in the license file.
*/
#pragma once
#include "mongo/util/thread_safe_string.h"
#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")
: _showTotal(true),
_units(units) {
_name = name.c_str();
reset( total , secondsBetween , checkInterval );
}
ProgressMeter() : _active(0), _showTotal(true), _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.c_str(); }
std::string getName() const { return _name.toString(); }
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; }
void showTotal(bool doShow) {
_showTotal = doShow;
}
std::string toString() const;
bool operator==( const ProgressMeter& other ) const { return this == &other; }
private:
bool _active;
unsigned long long _total;
bool _showTotal;
int _secondsBetween;
int _checkInterval;
unsigned long long _done;
unsigned long long _hits;
int _lastTime;
std::string _units;
ThreadSafeString _name;
};
// e.g.:
// CurOp * op = CurOp::get(txn);
// 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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