cpufreq plugin: Use parse_value_file().

diff --git a/src/cpufreq.c b/src/cpufreq.c
index 1e9e857980c68c3ebcb19af9e9b8c15d3f83ddcc..a2cc3ad242ab72058888e069c65cddc438c2e559 100644 (file)
--- a/src/cpufreq.c
+++ b/src/cpufreq.c
@@ -25,8 +25,6 @@
 #include "common.h"
 #include "plugin.h"
 
-#define MODULE_NAME "cpufreq"
-
 static int num_cpu = 0;
 
 static int cpufreq_init (void)
@@ -59,72 +57,39 @@ static int cpufreq_init (void)
        return (0);
 } /* int cpufreq_init */
 
-static void cpufreq_submit (int cpu_num, double value)
+static void cpufreq_submit (int cpu_num, value_t value)
 {
-       value_t values[1];
        value_list_t vl = VALUE_LIST_INIT;
 
-       values[0].gauge = value;
-
-       vl.values = values;
+       vl.values = &value;
        vl.values_len = 1;
        sstrncpy (vl.host, hostname_g, sizeof (vl.host));
        sstrncpy (vl.plugin, "cpufreq", sizeof (vl.plugin));
        sstrncpy (vl.type, "cpufreq", sizeof (vl.type));
-       ssnprintf (vl.type_instance, sizeof (vl.type_instance),
-                       "%i", cpu_num);
+       ssnprintf (vl.type_instance, sizeof (vl.type_instance), "%i", cpu_num);
 
        plugin_dispatch_values (&vl);
 }
 
 static int cpufreq_read (void)
 {
-        int status;
-       unsigned long long val;
-       FILE *fp;
-       char filename[256];
-       char buffer[16];
-
        for (int i = 0; i < num_cpu; i++)
        {
-               status = ssnprintf (filename, sizeof (filename),
-                               "/sys/devices/system/cpu/cpu%d/cpufreq/"
-                               "scaling_cur_freq", i);
-               if ((status < 1) || ((unsigned int)status >= sizeof (filename)))
-                       return (-1);
+               char filename[PATH_MAX];
+               ssnprintf (filename, sizeof (filename),
+                               "/sys/devices/system/cpu/cpu%d/cpufreq/scaling_cur_freq", i);
 
-               if ((fp = fopen (filename, "r")) == NULL)
+               value_t v;
+               if (parse_value_file (filename, &v, DS_TYPE_GAUGE) != 0)
                {
-                       char errbuf[1024];
-                       WARNING ("cpufreq: fopen (%s): %s", filename,
-                                       sstrerror (errno, errbuf,
-                                               sizeof (errbuf)));
-                       return (-1);
+                       WARNING ("cpufreq plugin: Reading \"%s\" failed.", filename);
+                       continue;
                }
 
-               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;
+               /* convert kHz to Hz */
+               v.gauge *= 1000.0;
 
-               cpufreq_submit (i, val);
+               cpufreq_submit (i, v);
        }
 
        return (0);