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/************************************************************************
* This file is part of Paramano. *
* *
* Paramano 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. *
* *
* Paramano 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 Paramano. If not, see *
* <http://www.gnu.org/licenses/>. *
************************************************************************/
#include "paramano.h"
/* [CORE][GOVERNOR NUMBER] */
char governors[999][50][13];
int total_governors;
/***********************************************************************
* Grab all available governors
**********************************************************************/
void gg_init()
{
gchar gov_string[500];
unsigned int i = 0;
total_governors = 0;
for (i = 0; i < gc_number(); i++)
{
memset(gov_string, '\0', sizeof(gov_string) );
gg_available(i, gov_string, sizeof(gov_string) );
// go through every governor in gov_string
gchar* curr = (char*)&gov_string;
gchar* end_of_curr = g_strstr_len(curr, strlen(curr), " ");
while (end_of_curr)
{
memset(governors[i][total_governors], '\0', 13);
memmove(governors[i][total_governors], curr, end_of_curr - curr);
curr = end_of_curr+1;
end_of_curr = g_strstr_len(curr, strlen(curr), " ");
total_governors++;
}
}
}
/***********************************************************************
* Populate out with current governor for core
**********************************************************************/
bool gg_current(int core, char* out, int size)
{
FILE* fd;
char *path;
asprintf(&path, "/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor", core);
if (!(fd = check_for_file(path)))
{
free(path);
return false;
}
fgets(out, size, fd);
// Get first line
gchar* newline = g_strrstr(out, "\n");
*newline = '\0';
debug("Current gov for core %d is '%s'\n",core,out);
fclose(fd);
free(path);
return true;
}
/***********************************************************************
* Populate `out` with number of available cores
**********************************************************************/
bool gg_available(int core, char* out, int size)
{
char *path;
FILE *fd;
asprintf(&path, "/sys/devices/system/cpu/cpu%d/cpufreq/scaling_available_governors", core);
if (!(fd = check_for_file(path)))
{
free(path);
return false;
}
fgets(out, size, fd);
fclose(fd);
free(path);
return true;
}
/***********************************************************************
* Return pointer to name of gov
**********************************************************************/
char* gg_gov(int core, int index)
{
return governors[core][index];
}
/***********************************************************************
* Return total number of governors
**********************************************************************/
unsigned int gg_number()
{
return total_governors;
}
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