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 GList *
cpufreq_monitor_libcpufreq_get_available_frequencies (CPUFreqMonitor *monitor)
{
GList *list = NULL;
guint cpu;
CPUFreqFrequencyList *freqs, *freq;
g_object_get (G_OBJECT (monitor),
"cpu", &cpu, NULL);
freqs = cpufreq_get_available_frequencies (cpu);
if (!freqs)
return NULL;
for (freq = freqs; freq; freq = freq->next) {
gchar *frequency;
frequency = g_strdup_printf ("%lu", freq->frequency);
if (!g_list_find_custom (list, frequency, compare))
list = g_list_prepend (list, frequency);
else
g_free (frequency);
}
cpufreq_put_available_frequencies (freqs);
return g_list_sort (list, compare);
}
JNIEXPORT jlongArray JNICALL Java_platforms_x86_X86_1DVFS_getAvailableFrequencies
(JNIEnv *env, jobject obj, jint cpu)
{
struct cpufreq_available_frequencies *available_freqs, *first = NULL;
jlongArray freqs;
jlong c_freqs[16];
int i = 0, length = 0;
jclass cls;
jfieldID fid;
available_freqs = cpufreq_get_available_frequencies((unsigned int)cpu);
if (available_freqs)
first = available_freqs->first;
/* First grab the number of available frequencies */
while (available_freqs) {
length++;
available_freqs = available_freqs->next;
}
freqs = (*env)->NewLongArray(env, (jsize) length);
if (!first) {
cls = (*env)->GetObjectClass(env, obj);
fid = (*env)->GetFieldID(env, cls, "minFreq", "J");
(*env)->SetLongField(env, obj, fid, 1);
(*env)->DeleteLocalRef(env, cls);
return freqs;
}
available_freqs = first;
while (available_freqs) {
c_freqs[i] = (jlong)available_freqs->frequency;
i++;
available_freqs = available_freqs->next;
}
// move from the temp structure to the java structure
(*env)->SetLongArrayRegion(env, freqs, 0, length, c_freqs);
/* Free local references */
cpufreq_put_available_frequencies(first);
return freqs;
}
void print_cpu(unsigned int cpu, unsigned int n_cpus)
{
int i;
char str[MAXLEN];
char premark[MAXLEN];
char postmark[MAXLEN];
unsigned long curfreq, freq;
struct cpufreq_available_frequencies* freqs;
struct cpufreq_available_governors* govs;
struct cpufreq_policy* policy;
if (cpu + 1 == n_cpus)
// last cpu column
printf("<item label='cpu %u'/>\n", cpu);
else if (cpu + 1 < n_cpus)
{
printf("<menu label='cpu %u' id='obcpufreq-cpu%u'>\n", cpu, cpu + 1);
print_cpu(cpu + 1, n_cpus);
printf("</menu>\n");
}
printf(SEPARATOR);
curfreq = cpufreq_get_freq_kernel(cpu);
policy = cpufreq_get_policy(cpu);
// print available governors
govs = cpufreq_get_available_governors(cpu);
if (govs)
{
printf("<menu label='governors' id='obcpufreq-governors%u'>\n", cpu);
for (; govs; govs = govs->next)
{
premark[0] = ' ';
premark[1] = '\0';
if (!strcmp(govs->governor, policy->governor))
premark[0] = '*';
printf(" <item label='%s%s'><action name='Execute'><command>"
CPUFREQ_SET " --cpu %u -g %s</command></action></item>\n",
premark, govs->governor,
cpu, govs->governor);
}
printf("</menu>\n");
cpufreq_put_available_governors(govs);
}
else
printf("<item label='%s'/>\n", "no available governors");
printf(SEPARATOR);
// print available freqs
freqs = cpufreq_get_available_frequencies(cpu);
if (freqs)
{
for (i = 0; freqs; freqs = freqs->next, i++)
{
freq = freqs->frequency;
get_human_speed(str, freq);
premark[0] = ' ';
premark[1] = '\0';
if (freq == curfreq)
premark[0] = '*';
postmark[0] = '\0';
if (policy)
{
if (freq == policy->max && freq == policy->min)
strcpy(postmark, " (max,min)");
else if (freq == policy->max)
strcpy(postmark, " (max)");
else if (freq == policy->min)
strcpy(postmark, " (min)");
}
printf("<menu label='%s%s%s' id='obcpufreq-freq%d'>\n"
" <item label='set as max'><action name='Execute'><command>"
CPUFREQ_SET " --cpu %u --max %lu</command></action></item>\n"
" <item label='set as min'><action name='Execute'><command>"
CPUFREQ_SET " --cpu %u --min %lu</command></action></item>\n</menu>\n",
premark, str, postmark, i,
cpu, freqs->frequency,
cpu, freqs->frequency);
}
cpufreq_put_available_frequencies(freqs);
}
else
printf("<item label='%s'/>\n", "no available freqs");
cpufreq_put_policy(policy);
return;
}