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-rw-r--r--getgov.c127
1 files changed, 127 insertions, 0 deletions
diff --git a/getgov.c b/getgov.c
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+/************************************************************************
+ * 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 "string.h"
+#include "getgov.h"
+#include "getcore.h"
+#include "common.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <glib.h>
+
+/* [CORE][GOVERNOR NUMBER] */
+char governors[999][50][13];
+int total_governors;
+
+/***********************************************************************
+ * Grab all available governors
+ **********************************************************************/
+void gg_init()
+{
+ gchar gov_string[500];
+ 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
+ **********************************************************************/
+int gg_current(int core, char* out, int size)
+{
+ FILE* fd;
+ char path[FILE_PATH_SIZE];
+
+ sprintf(path, "/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor", core);
+
+ if(!(fd = fopen(path, "r")))
+ {
+ debug("Couldn't open '%s'\n",path);
+ return -1;
+ }
+
+ fgets(out, size, fd);
+ // Chomp
+ gchar* newline = g_strrstr(out, "\n");
+ *newline = '\0';
+
+ debug("Current gov for core %d is '%s'\n",core,out);
+
+ fclose(fd);
+ return 0;
+}
+
+
+/***********************************************************************
+ * Populate out with number of available cores
+ **********************************************************************/
+int gg_available(int core, char* out, int size)
+{
+ FILE* fd;
+ char path[80];
+
+ sprintf(path, "/sys/devices/system/cpu/cpu%d/cpufreq/scaling_available_governors", core);
+
+ if(!(fd = fopen(path, "r")))
+ {
+ debug("Couldn't open '%s'\n",path);
+ return -1;
+ }
+
+ fgets(out, size, fd);
+
+ fclose(fd);
+ return 0;
+}
+
+
+/***********************************************************************
+ * Return pointer to name of gov
+ **********************************************************************/
+char* gg_gov(int core, int index)
+{
+ return governors[core][index];
+}
+
+/***********************************************************************
+ * Return total number of governors
+ **********************************************************************/
+int gg_number()
+{
+ return total_governors;
+}