**/
#include "collectd.h"
+
#include "common.h"
#include "plugin.h"
-#define MODULE_NAME "cpufreq"
-
static int num_cpu = 0;
-static int cpufreq_init (void)
-{
- int status;
- char filename[256];
+static int cpufreq_init(void) {
+ int status;
+ char filename[256];
- num_cpu = 0;
+ num_cpu = 0;
- while (1)
- {
- status = snprintf (filename, sizeof (filename),
- "/sys/devices/system/cpu/cpu%d/cpufreq/"
- "scaling_cur_freq", num_cpu);
- if ((status < 1) || ((unsigned int)status >= sizeof (filename)))
- break;
+ while (1) {
+ status = snprintf(filename, sizeof(filename),
+ "/sys/devices/system/cpu/cpu%d/cpufreq/"
+ "scaling_cur_freq",
+ num_cpu);
+ if ((status < 1) || ((unsigned int)status >= sizeof(filename)))
+ break;
- if (access (filename, R_OK))
- break;
+ if (access(filename, R_OK))
+ break;
- num_cpu++;
- }
+ num_cpu++;
+ }
- INFO ("cpufreq plugin: Found %d CPU%s", num_cpu,
- (num_cpu == 1) ? "" : "s");
+ INFO("cpufreq plugin: Found %d CPU%s", num_cpu, (num_cpu == 1) ? "" : "s");
- if (num_cpu == 0)
- plugin_unregister_read ("cpufreq");
+ if (num_cpu == 0)
+ plugin_unregister_read("cpufreq");
- return (0);
+ return 0;
} /* int cpufreq_init */
-static void cpufreq_submit (int cpu_num, double value)
-{
- value_t values[1];
- value_list_t vl = VALUE_LIST_INIT;
+static void cpufreq_submit(int cpu_num, value_t value) {
+ value_list_t vl = VALUE_LIST_INIT;
- values[0].gauge = value;
+ vl.values = &value;
+ vl.values_len = 1;
+ sstrncpy(vl.plugin, "cpufreq", sizeof(vl.plugin));
+ sstrncpy(vl.type, "cpufreq", sizeof(vl.type));
+ snprintf(vl.type_instance, sizeof(vl.type_instance), "%i", cpu_num);
- vl.values = values;
- vl.values_len = 1;
- vl.time = time (NULL);
- strcpy (vl.host, hostname_g);
- strcpy (vl.plugin, "cpufreq");
- snprintf (vl.type_instance, sizeof (vl.type_instance),
- "%i", cpu_num);
-
- plugin_dispatch_values ("cpufreq", &vl);
+ plugin_dispatch_values(&vl);
}
-static int cpufreq_read (void)
-{
- int status;
- unsigned long long val;
- int i = 0;
- FILE *fp;
- char filename[256];
- char buffer[16];
-
- for (i = 0; i < num_cpu; i++)
- {
- status = snprintf (filename, sizeof (filename),
- "/sys/devices/system/cpu/cpu%d/cpufreq/"
- "scaling_cur_freq", i);
- if ((status < 1) || ((unsigned int)status >= sizeof (filename)))
- return (-1);
-
- if ((fp = fopen (filename, "r")) == NULL)
- {
- char errbuf[1024];
- WARNING ("cpufreq: fopen (%s): %s", filename,
- sstrerror (errno, errbuf,
- sizeof (errbuf)));
- return (-1);
- }
-
- if (fgets (buffer, 16, fp) == NULL)
- {
- char errbuf[1024];
- WARNING ("cpufreq: fgets: %s",
- sstrerror (errno, errbuf,
- sizeof (errbuf)));
- fclose (fp);
- return (-1);
- }
-
- if (fclose (fp))
- {
- char errbuf[1024];
- WARNING ("cpufreq: fclose: %s",
- sstrerror (errno, errbuf,
- sizeof (errbuf)));
- }
-
-
- /* You're seeing correctly: The file is reporting kHz values.. */
- val = atoll (buffer) * 1000;
-
- cpufreq_submit (i, val);
- }
-
- return (0);
+static int cpufreq_read(void) {
+ for (int i = 0; i < num_cpu; i++) {
+ char filename[PATH_MAX];
+ snprintf(filename, sizeof(filename),
+ "/sys/devices/system/cpu/cpu%d/cpufreq/scaling_cur_freq", i);
+
+ value_t v;
+ if (parse_value_file(filename, &v, DS_TYPE_GAUGE) != 0) {
+ WARNING("cpufreq plugin: Reading \"%s\" failed.", filename);
+ continue;
+ }
+
+ /* convert kHz to Hz */
+ v.gauge *= 1000.0;
+
+ cpufreq_submit(i, v);
+ }
+
+ return 0;
} /* int cpufreq_read */
-void module_register (void)
-{
- plugin_register_init ("cpufreq", cpufreq_init);
- plugin_register_read ("cpufreq", cpufreq_read);
+void module_register(void) {
+ plugin_register_init("cpufreq", cpufreq_init);
+ plugin_register_read("cpufreq", cpufreq_read);
}