diff options
Diffstat (limited to 'cpufreq/src/cpufreq-selector/cpufreq-selector-procfs.c')
| -rw-r--r-- | cpufreq/src/cpufreq-selector/cpufreq-selector-procfs.c | 242 |
1 files changed, 0 insertions, 242 deletions
diff --git a/cpufreq/src/cpufreq-selector/cpufreq-selector-procfs.c b/cpufreq/src/cpufreq-selector/cpufreq-selector-procfs.c deleted file mode 100644 index 002c387c..00000000 --- a/cpufreq/src/cpufreq-selector/cpufreq-selector-procfs.c +++ /dev/null @@ -1,242 +0,0 @@ -/* - * MATE CPUFreq Applet - * Copyright (C) 2004 Carlos Garcia Campos <[email protected]> - * - * This library 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 library 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 library; if not, write to the Free - * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. - * - * Authors : Carlos Garc�a Campos <[email protected]> - */ - -#include <glib.h> -#include <glib/gstdio.h> -#include <stdio.h> -#include <stdlib.h> -#include <errno.h> - -#include "cpufreq-selector-procfs.h" - -static gboolean -cpufreq_selector_procfs_set_frequency (CPUFreqSelector *selector, - guint frequency, - GError **error); -static gboolean -cpufreq_selector_procfs_set_governor (CPUFreqSelector *selector, - const gchar *governor, - GError **error); - -G_DEFINE_TYPE (CPUFreqSelectorProcfs, cpufreq_selector_procfs, CPUFREQ_TYPE_SELECTOR) - -static void -cpufreq_selector_procfs_init (CPUFreqSelectorProcfs *selector) -{ -} - -static void -cpufreq_selector_procfs_class_init (CPUFreqSelectorProcfsClass *klass) -{ - CPUFreqSelectorClass *selector_class = CPUFREQ_SELECTOR_CLASS (klass); - - selector_class->set_frequency = cpufreq_selector_procfs_set_frequency; - selector_class->set_governor = cpufreq_selector_procfs_set_governor; -} - -CPUFreqSelector * -cpufreq_selector_procfs_new (guint cpu) -{ - CPUFreqSelector *selector; - - selector = CPUFREQ_SELECTOR (g_object_new (CPUFREQ_TYPE_SELECTOR_PROCFS, - "cpu", cpu, - NULL)); - - return selector; -} - -static gboolean -cpufreq_procfs_read (guint selector_cpu, - guint *fmax, - guint *pmin, - guint *pmax, - guint *fmin, - gchar *mode, - GError **error) -{ - gchar **lines; - gchar *buffer = NULL; - gint i; - guint cpu; - gboolean found = FALSE; - - if (!g_file_get_contents ("/proc/cpufreq", &buffer, NULL, error)) { - return FALSE; - } - - lines = g_strsplit (buffer, "\n", -1); - for (i = 0; lines[i]; i++) { - if (g_ascii_strncasecmp (lines[i], "CPU", 3) == 0) { - /* CPU 0 650000 kHz ( 81 %) - 800000 kHz (100 %) - powersave */ - sscanf (lines[i], "CPU %u %u kHz (%u %%) - %u kHz (%u %%) - %20s", - &cpu, fmin, pmin, fmax, pmax, mode); - - if (cpu == selector_cpu) { - found = TRUE; - break; - } - } - } - - g_strfreev (lines); - g_free (buffer); - - if (!found) { - g_set_error (error, - CPUFREQ_SELECTOR_ERROR, - SELECTOR_ERROR_INVALID_CPU, - "Invalid CPU number '%d'", - selector_cpu); - - return FALSE; - } - - return TRUE; -} - -static gboolean -cpufreq_procfs_write (const gchar *path, - const gchar *setting, - GError **error) -{ - FILE *fd; - - fd = g_fopen (path, "w"); - - if (!fd) { - g_set_error (error, - G_FILE_ERROR, - g_file_error_from_errno (errno), - "Failed to open '%s' for writing: " - "g_fopen() failed: %s", - path, - g_strerror (errno)); - - return FALSE; - } - - if (g_fprintf (fd, "%s", setting) < 0) { - g_set_error (error, - G_FILE_ERROR, - g_file_error_from_errno (errno), - "Failed to write '%s': " - "g_fprintf() failed: %s", - path, - g_strerror (errno)); - - fclose (fd); - - return FALSE; - } - - fclose (fd); - - return TRUE; -} - -static gboolean -cpufreq_selector_procfs_set_frequency (CPUFreqSelector *selector, - guint frequency, - GError **error) -{ - gchar *str; - gchar *path; - guint freq; - guint cpu; - guint pmin, pmax; - guint sc_max, sc_min; - gchar mode[21]; - - g_object_get (G_OBJECT (selector), - "cpu", &cpu, - NULL); - - if (!cpufreq_procfs_read (cpu, &sc_max, &pmin, &pmax, &sc_min, mode, error)) { - return FALSE; - } - - if (g_ascii_strcasecmp (mode, "userspace") != 0) { - if (!cpufreq_selector_procfs_set_governor (selector, - "userspace", - error)) { - return FALSE; - } - } - - if (frequency != sc_max && frequency != sc_min) { - if (abs ((int)sc_max - (int)frequency) < abs ((int)frequency - (int)sc_min)) - freq = sc_max; - else - freq = sc_min; - } else { - freq = frequency; - } - - path = g_strdup_printf ("/proc/sys/cpu/%u/speed", cpu); - str = g_strdup_printf ("%u", freq); - if (!cpufreq_procfs_write (path, str, error)) { - g_free (path); - g_free (str); - - return FALSE; - } - - g_free (path); - g_free (str); - - return TRUE; -} - -static gboolean -cpufreq_selector_procfs_set_governor (CPUFreqSelector *selector, - const gchar *governor, - GError **error) -{ - gchar *str; - guint cpu; - guint pmin, pmax; - guint sc_max, sc_min; - gchar mode[21]; - - g_object_get (G_OBJECT (selector), - "cpu", &cpu, - NULL); - - if (!cpufreq_procfs_read (cpu, &sc_max, &pmin, &pmax, &sc_min, mode, error)) { - return FALSE; - } - - if (g_ascii_strcasecmp (governor, mode) == 0) - return TRUE; - - str = g_strdup_printf ("%u:%u:%u:%s", cpu, sc_min, sc_max, governor); - - if (!cpufreq_procfs_write ("/proc/cpufreq", str, error)) { - g_free (str); - - return FALSE; - } - - g_free (str); - - return TRUE; -} |