wxCpuThrottle/src/acpiparser.cpp

/***************************************************************************
 *   Copyright (C) 2007 by Torben Nielsen   *
 *   torben@t-hoerup.dk   *
 *                                                                         *
 *   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.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/
#include "acpiparser.h"

#include <iostream>
#include <fstream>
#include <sstream>

AcpiParser::AcpiParser()
{
        mNumstates = 0;
        mCurrentState = 0;
}


AcpiParser::~AcpiParser()
{
}

void AcpiParser::ReadAcpiFile()
{
        char buffer[1024];
        std::ifstream in;
                in.open("/proc/acpi/processor/CPU1/throttling");
        
        int linecounter = 0;

        while (! in.eof() )
        {
                in.getline(buffer,1024);
                std::string line(buffer);
                linecounter++;
                
                unsigned int pos = line.rfind(' ');
                if (pos == std::string::npos)
                        continue;
                
                std::string value = line.substr(pos, line.size() - pos);
                
                switch (linecounter)
                {
                        case 1:
                                mNumstates = atoi(value.c_str());
                                break;
                        case 2:
                        {
                                std::string tmp = value.substr(1, value.size() -1);
                                mCurrentState = atoi(tmp.c_str() );
                                break;
                        }
                        default:
                                mStateDescriptions.push_back( value );                          
                }
        }
        
        in.close();
}


int AcpiParser::GetCurrentState()
{
    return mCurrentState;
}


int AcpiParser::GetStateCount()
{
    return mNumstates;
}


std::string AcpiParser::GetStateDescription(unsigned int stateNumber)
{
        if (stateNumber >= mStateDescriptions.size() )
                return "";
        
        return mStateDescriptions[stateNumber];
}


bool AcpiParser::SetState(int newState)
{
        if (newState > mNumstates)
                return false;
        
    bool success = false;
        std::ofstream out;
        out.open("/proc/acpi/processor/CPU1/throttling");
        
        if ( out )
        {
                std::stringstream buf;
                buf << newState << "\n";
                out << buf.str();
                out.close();
                success = true;
        }
        
        return success;
}
1	torben	24	/***************************************************************************
2			* Copyright (C) 2007 by Torben Nielsen *
3			* torben@t-hoerup.dk *
4			* *
5			* This program is free software; you can redistribute it and/or modify *
6			* it under the terms of the GNU General Public License as published by *
7			* the Free Software Foundation; either version 2 of the License, or *
8			* (at your option) any later version. *
9			* *
10			* This program is distributed in the hope that it will be useful, *
11			* but WITHOUT ANY WARRANTY; without even the implied warranty of *
12			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13			* GNU General Public License for more details. *
14			* *
15			* You should have received a copy of the GNU General Public License *
16			* along with this program; if not, write to the *
17			* Free Software Foundation, Inc., *
18			* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19			***************************************************************************/
20			#include "acpiparser.h"
21
22			#include <iostream>
23			#include <fstream>
24			#include <sstream>
25
26			AcpiParser::AcpiParser()
27			{
28			mNumstates = 0;
29			mCurrentState = 0;
30			}
31
32
33			AcpiParser::~AcpiParser()
34			{
35			}
36
37			void AcpiParser::ReadAcpiFile()
38			{
39			char buffer[1024];
40			std::ifstream in;
41			in.open("/proc/acpi/processor/CPU1/throttling");
42
43			int linecounter = 0;
44
45			while (! in.eof() )
46			{
47			in.getline(buffer,1024);
48			std::string line(buffer);
49			linecounter++;
50
51			unsigned int pos = line.rfind(' ');
52			if (pos == std::string::npos)
53			continue;
54
55			std::string value = line.substr(pos, line.size() - pos);
56
57			switch (linecounter)
58			{
59			case 1:
60			mNumstates = atoi(value.c_str());
61			break;
62			case 2:
63			{
64			std::string tmp = value.substr(1, value.size() -1);
65			mCurrentState = atoi(tmp.c_str() );
66			break;
67			}
68			default:
69			mStateDescriptions.push_back( value );
70			}
71			}
72
73			in.close();
74			}
75
76
77			int AcpiParser::GetCurrentState()
78			{
79			return mCurrentState;
80			}
81
82
83
84			int AcpiParser::GetStateCount()
85			{
86			return mNumstates;
87			}
88
89
90			std::string AcpiParser::GetStateDescription(unsigned int stateNumber)
91			{
92			if (stateNumber >= mStateDescriptions.size() )
93			return "";
94
95			return mStateDescriptions[stateNumber];
96			}
97
98
99
100			bool AcpiParser::SetState(int newState)
101			{
102			if (newState > mNumstates)
103			return false;
104
105			bool success = false;
106			std::ofstream out;
107			out.open("/proc/acpi/processor/CPU1/throttling");
108
109			if ( out )
110			{
111			std::stringstream buf;
112			buf << newState << "\n";
113			out << buf.str();
114			out.close();
115			success = true;
116			}
117
118			return success;
119			}