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	/***************************************************************************
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	}