Source: whatsup/OSProcessList.h
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/*
KTop, the KDE Task Manager
Copyright (c) 1999 Chris Schlaeger
cs@kde.org
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
// $Id: OSProcessList.h,v 1.15 1999/03/10 09:43:01 cschlaeg Exp $
#ifndef _OSProcessList_h_
#define _OSProcessList_h_
/*
* ATTENTION: PORTING INFORMATION!
*
* If you plan to port KTop to a new platform please follow these instructions.
* For general porting information please look at the file OSStatus.cpp!
*
* To keep this file readable and maintainable please keep the number of
* #ifdef _PLATFORM_ as low as possible. Ideally you dont have to make any
* platform specific changes in the header files. Please do not add any new
* features. This is planned for KTop versions after 1.0.0!
*/
#include
#include
#ifdef HAVE_SYS_TYPES_H
#include
#endif
#include
#include
#include "TimeStampList.h"
#include "OSProcess.h"
/**
* This class encapsulates all OS specific information about the process list.
* Since inquiring process status is highly OS dependant all these adaptions
* should be made in this file.
*/
class OSProcessList : public QList
{
public:
enum SORTKEY
{
SORTBY_PID = 0,
SORTBY_PPID,
SORTBY_NAME,
SORTBY_UID,
SORTBY_USERNAME,
SORTBY_CPU,
SORTBY_TIME,
SORTBY_PRIORITY,
SORTBY_STATUS,
SORTBY_VMSIZE,
SORTBY_VMRSS,
SORTBY_VMLIB
};
OSProcessList();
virtual ~OSProcessList()
{
delete lastTStamps;
}
/**
* This function clears the old process list and retrieves a current one
* from the OS.
*/
bool update(void);
/**
* The 'has...' functions can be used to inquire if the OS supports a
* specific process attribute. The return value may be hardcoded
* for each platform.
*/
bool hasName(void) const;
bool hasCmdLine(void) const;
bool hasUid(void) const;
bool hasUserTime(void) const;
bool hasSysTime(void) const;
bool hasUserLoad(void) const;
bool hasSysLoad(void) const;
bool hasStatus(void) const;
bool hasPriority(void) const;
bool hasNiceLevel(void) const;
bool hasVmSize(void) const;
bool hasVmRss(void) const;
bool hasVmLib(void) const;
void setSortCriteria(SORTKEY sk)
{
sortCriteria = sk;
}
SORTKEY getSortCriteria(void) const
{
return (sortCriteria);
}
/**
* This function is needed mainly because we can have errors during the
* constructor execution. Since it has no return value we can call this
* function to find out if the class is fully operational.
*/
bool ok(void) const
{
return (!error);
}
/**
* This function can be used when calls to ok() return false to find out
* what has happened. The error variable is cleared after a call to
* getErrMessage().
*/
const QString& getErrMessage(void)
{
error = false;
return (errMessage);
}
private:
/// This function is needed by the parent class to sort the list.
virtual int compareItems(GCI it1, GCI it2);
/// This variabled stores the criteria used to sort the list.
SORTKEY sortCriteria;
TimeStampList* lastTStamps;
/**
* These variables are used for error handling. When an error has occured
* error is set to true and the errMessage contains a more detailed
* description of the problem.
*/
bool error;
QString errMessage;
} ;
#endif
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