1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
/************************************************************************
* This file is part of trayfreq-archlinux. *
* *
* trayfreq-archlinux 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 3 of the *
* License, or (at your option) any later version. *
* *
* trayfreq-archlinux 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 trayfreq-archlinux. If not, see *
* <http://www.gnu.org/licenses/>. *
************************************************************************/
#include "getfreq.h"
#include "getcore.h"
#include "common.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <glib.h>
/* [CORE][FREQUENCY NUMBER] */
char AVAILABLE_FREQUENCIES[999][50][13];
int NUMBER_OF_AVAILABLE_FREQUENCIES;
void gf_init()
{
// TO DO : get rid of magic constants
gchar freq_string[500];
int i = 0;
int j = 0;
for(i = 0; i < gc_number(); ++i)
{
memset(freq_string, '\0', 500);
// Get available governor freqs. If no governor, try next cpu
if (gf_available(i, freq_string, 500) == -1)
{
debug("Couldn't find gov on core %d\n",i);
continue;
}
/* go through every frequency in freq_string */
j = 0;
gchar* curr = &freq_string[0];
gchar* end_of_curr = g_strstr_len(curr, strlen(curr), " ");
while(end_of_curr)
{
memset(AVAILABLE_FREQUENCIES[i][j], '\0', 13);
memmove(AVAILABLE_FREQUENCIES[i][j], curr, end_of_curr - curr);
curr = end_of_curr+1;
end_of_curr = g_strstr_len(curr, strlen(curr), " ");
++j;
}
}
NUMBER_OF_AVAILABLE_FREQUENCIES = j;
debug("Found %d frequencies\n",j);
}
int gf_current(int core)
{
FILE* fd;
char buff[13];
char path[80];
int freq;
sprintf(path, "/sys/devices/system/cpu/cpu%d/cpufreq/scaling_cur_freq", core);
if(!(fd = fopen(path, "r")))
{
debug("Couldn't open '%s'\n",path);
return -1;
}
fgets(buff, 13, fd);
freq = atoi(buff);
fclose(fd);
debug("Found freq %d on core %d\n",freq,core);
return freq;
}
int gf_available(int core, char* out, int size)
{
FILE* fd;
char path[80];
sprintf(path, "/sys/devices/system/cpu/cpu%d/cpufreq/scaling_available_frequencies", core);
if(!(fd = fopen(path, "r")))
{
debug("Couldn't open '%s'\n",path);
return -1;
}
fgets(out, size, fd);
fclose(fd);
return 0;
}
void gf_get_frequency_label(int freq, char* out)
{
if(freq >= 1000000) // >= 1 million KHz (1GHz)
sprintf(out, "%.2f GHz", ((float)freq/1000000) );
else
sprintf(out, "%.2d MHz", freq/1000);
debug("Prepared freq label '%s' for freq %d\n",out,freq);
}
char* gf_freqa(int core, int index)
{
return AVAILABLE_FREQUENCIES[core][index];
}
int gf_freqi(int core, int index)
{
return atoi(gf_freqa(core, index));
}
int gf_number()
{
return NUMBER_OF_AVAILABLE_FREQUENCIES;
}
|
