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authorPerberos <[email protected]>2011-11-14 18:24:48 -0300
committerPerberos <[email protected]>2011-11-14 18:24:48 -0300
commit312ba610a1e98fc656fb58178227d7d45a64494e (patch)
tree54a3c2b6084c80e63fb0526c6e7b8e01627acbd7 /cpufreq/src/cpufreq-selector/cpufreq-selector-libcpufreq.c
downloadmate-applets-312ba610a1e98fc656fb58178227d7d45a64494e.tar.bz2
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Diffstat (limited to 'cpufreq/src/cpufreq-selector/cpufreq-selector-libcpufreq.c')
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diff --git a/cpufreq/src/cpufreq-selector/cpufreq-selector-libcpufreq.c b/cpufreq/src/cpufreq-selector/cpufreq-selector-libcpufreq.c
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+++ b/cpufreq/src/cpufreq-selector/cpufreq-selector-libcpufreq.c
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+/*
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Authors : Carlos Garc�a Campos <[email protected]>
+ */
+
+#include <glib.h>
+#include <glib/gstdio.h>
+#include <cpufreq.h>
+#include <stdlib.h>
+
+#include "cpufreq-selector-libcpufreq.h"
+
+static void cpufreq_selector_libcpufreq_init (CPUFreqSelectorLibcpufreq *selector);
+static void cpufreq_selector_libcpufreq_class_init (CPUFreqSelectorLibcpufreqClass *klass);
+
+static gboolean cpufreq_selector_libcpufreq_set_frequency (CPUFreqSelector *selector,
+ guint frequency,
+ GError **error);
+static gboolean cpufreq_selector_libcpufreq_set_governor (CPUFreqSelector *selector,
+ const gchar *governor,
+ GError **error);
+
+G_DEFINE_TYPE (CPUFreqSelectorLibcpufreq, cpufreq_selector_libcpufreq, CPUFREQ_TYPE_SELECTOR)
+
+typedef struct cpufreq_policy CPUFreqPolicy;
+typedef struct cpufreq_available_frequencies CPUFreqFrequencyList;
+typedef struct cpufreq_available_governors CPUFreqGovernorList;
+
+static void
+cpufreq_selector_libcpufreq_init (CPUFreqSelectorLibcpufreq *selector)
+{
+}
+
+static void
+cpufreq_selector_libcpufreq_class_init (CPUFreqSelectorLibcpufreqClass *klass)
+{
+ CPUFreqSelectorClass *selector_class = CPUFREQ_SELECTOR_CLASS (klass);
+
+ selector_class->set_frequency = cpufreq_selector_libcpufreq_set_frequency;
+ selector_class->set_governor = cpufreq_selector_libcpufreq_set_governor;
+}
+
+CPUFreqSelector *
+cpufreq_selector_libcpufreq_new (guint cpu)
+{
+ CPUFreqSelector *selector;
+
+ selector = CPUFREQ_SELECTOR (g_object_new (CPUFREQ_TYPE_SELECTOR_LIBCPUFREQ,
+ "cpu", cpu,
+ NULL));
+
+ return selector;
+}
+
+static guint
+cpufreq_selector_libcpufreq_get_valid_frequency (CPUFreqSelectorLibcpufreq *selector,
+ guint frequency)
+{
+ guint cpu;
+ gint dist = G_MAXINT;
+ guint retval = 0;
+ CPUFreqFrequencyList *freqs, *freq;
+
+ g_object_get (G_OBJECT (selector),
+ "cpu", &cpu,
+ NULL);
+
+ freqs = cpufreq_get_available_frequencies (cpu);
+ if (!freqs)
+ return 0;
+
+ for (freq = freqs; freq; freq = freq->next) {
+ guint current_dist;
+
+ if (freq->frequency == frequency) {
+ cpufreq_put_available_frequencies (freqs);
+
+ return frequency;
+ }
+
+ current_dist = abs (freq->frequency - frequency);
+ if (current_dist < dist) {
+ dist = current_dist;
+ retval = freq->frequency;
+ }
+ }
+
+ return retval;
+}
+
+static gboolean
+cpufreq_selector_libcpufreq_set_frequency (CPUFreqSelector *selector,
+ guint frequency,
+ GError **error)
+{
+ guint freq;
+ guint cpu;
+
+ g_object_get (G_OBJECT (selector),
+ "cpu", &cpu,
+ NULL);
+
+ freq = cpufreq_selector_libcpufreq_get_valid_frequency (CPUFREQ_SELECTOR_LIBCPUFREQ (selector),
+ frequency);
+ if (cpufreq_set_frequency (cpu, freq) != 0) {
+ g_set_error (error,
+ CPUFREQ_SELECTOR_ERROR,
+ SELECTOR_ERROR_SET_FREQUENCY,
+ "Cannot set frequency '%d'",
+ frequency);
+
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static gboolean
+cpufreq_selector_libcpufreq_validate_governor (CPUFreqSelectorLibcpufreq *selector,
+ const gchar *governor)
+{
+ guint cpu;
+ CPUFreqGovernorList *govs, *gov;
+
+ g_object_get (G_OBJECT (selector),
+ "cpu", &cpu,
+ NULL);
+
+ govs = cpufreq_get_available_governors (cpu);
+ if (!govs)
+ return FALSE;
+
+ for (gov = govs; gov; gov = gov->next) {
+ if (g_ascii_strcasecmp (gov->governor, governor) == 0) {
+ cpufreq_put_available_governors (govs);
+
+ return TRUE;
+ }
+ }
+
+ cpufreq_put_available_governors (govs);
+
+ return FALSE;
+}
+
+static gboolean
+cpufreq_selector_libcpufreq_set_governor (CPUFreqSelector *selector,
+ const gchar *governor,
+ GError **error)
+{
+ CPUFreqSelectorLibcpufreq *selector_libcpufreq;
+ guint cpu;
+
+ selector_libcpufreq = CPUFREQ_SELECTOR_LIBCPUFREQ (selector);
+
+ if (!cpufreq_selector_libcpufreq_validate_governor (selector_libcpufreq, governor)) {
+ g_set_error (error,
+ CPUFREQ_SELECTOR_ERROR,
+ SELECTOR_ERROR_INVALID_GOVERNOR,
+ "Invalid governor '%s'",
+ governor);
+
+ return FALSE;
+ }
+
+ g_object_get (G_OBJECT (selector),
+ "cpu", &cpu,
+ NULL);
+
+ if (cpufreq_modify_policy_governor (cpu, (gchar *)governor) != 0) {
+ g_set_error (error,
+ CPUFREQ_SELECTOR_ERROR,
+ SELECTOR_ERROR_INVALID_GOVERNOR,
+ "Invalid governor '%s'",
+ governor);
+
+ return FALSE;
+ }
+
+ return TRUE;
+}