X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=src%2Fcpufreq.c;h=e53e49523814264bfc03ce900165cf70fa1dc835;hb=2cea8075c666a6c6c7d6e1b4f95e1bee6f3803ac;hp=001ccec2c580972f9aad03a8a702c1d289624415;hpb=a82ff6683f0011a498b4fc0947833d2e28925b76;p=collectd.git

diff --git a/src/cpufreq.c b/src/cpufreq.c
index 001ccec2..e53e4952 100644
--- a/src/cpufreq.c
+++ b/src/cpufreq.c
@@ -1,6 +1,6 @@
 /**
  * collectd - src/cpufreq.c
- * Copyright (C) 2005  Peter Holik
+ * Copyright (C) 2005-2007  Peter Holik
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
@@ -20,102 +20,112 @@
  *   Peter Holik <peter at holik.at>
  **/
 
-#include "cpufreq.h"
-
-/*
- * Originally written by Peter Holik
- */
+#include "collectd.h"
+#include "common.h"
+#include "plugin.h"
 
-#if COLLECT_CPUFREQ
 #define MODULE_NAME "cpufreq"
 
-#include "plugin.h"
-#include "common.h"
-
-static int num_cpu = 0;
+#if defined(KERNEL_LINUX)
+# define CPUFREQ_HAVE_READ 1
+#else
+# define CPUFREQ_HAVE_READ 0
+#endif
 
-static char *cpufreq_file = "cpufreq-%s.rrd";
+static data_source_t data_source[1] =
+{
+	{"value", DS_TYPE_GAUGE, 0, NAN}
+};
 
-static char *ds_def[] =
+static data_set_t data_set =
 {
-	"DS:value:GAUGE:25:0:U",
-	NULL
+	"cpufreq", 1, data_source
 };
-static int ds_num = 1;
 
-#define BUFSIZE 256
+#if CPUFREQ_HAVE_READ
+#ifdef KERNEL_LINUX
+static int num_cpu = 0;
+#endif
 
-void cpufreq_init (void)
+static int cpufreq_init (void)
 {
+#ifdef KERNEL_LINUX
         int status;
-	char filename[BUFSIZE];
+	char filename[256];
 
 	num_cpu = 0;
 
 	while (1)
 	{
-		status = snprintf (filename, BUFSIZE, "/sys/devices/system/cpu/cpu%d/cpufreq/cpuinfo_cur_freq", num_cpu);
-    		if (status < 1 || status >= BUFSIZE)
+		status = snprintf (filename, sizeof (filename),
+				"/sys/devices/system/cpu/cpu%d/cpufreq/"
+				"scaling_cur_freq", num_cpu);
+    		if (status < 1 || status >= sizeof (filename))
 			break;
 
-		if (access(filename, R_OK))
+		if (access (filename, R_OK))
 			break;
 
 		num_cpu++;
 	}
 
-	syslog (LOG_INFO, MODULE_NAME" found %d cpu(s)", num_cpu);
-}
+	syslog (LOG_INFO, "cpufreq plugin: Found %d CPU%s", num_cpu,
+			(num_cpu == 1) ? "" : "s");
 
-void cpufreq_write (char *host, char *inst, char *val)
-{
-        int status;
-        char file[BUFSIZE];
+	if (num_cpu == 0)
+		plugin_unregister_read ("cpufreq");
+#endif /* defined(KERNEL_LINUX) */
 
-        status = snprintf (file, BUFSIZE, cpufreq_file, inst);
-        if (status < 1 || status >= BUFSIZE)
-                return;
-
-	rrd_update_file (host, file, val, ds_def, ds_num);
-}
+	return (0);
+} /* int cpufreq_init */
 
-void cpufreq_submit (int cpu_num, unsigned long long val)
+static void cpufreq_submit (int cpu_num, double value)
 {
-	char buf[BUFSIZE];
-	char cpu[16];
+	value_t values[1];
+	value_list_t vl = VALUE_LIST_INIT;
 
-	if (snprintf (buf, BUFSIZE, "%u:%llu", (unsigned int) curtime, val) >= BUFSIZE)
-		return;
-        snprintf (cpu, 16, "%i", cpu_num);
+	values[0].gauge = value;
 
-	plugin_submit (MODULE_NAME, cpu, buf);
+	vl.values = values;
+	vl.values_len = 1;
+	vl.time = time (NULL);
+	strcpy (vl.host, hostname);
+	strcpy (vl.plugin, "cpufreq");
+	snprintf (vl.type_instance, sizeof (vl.type_instance),
+			"%i", cpu_num);
+
+	plugin_dispatch_values ("cpufreq", &vl);
 }
 
-void cpufreq_read (void)
+static int cpufreq_read (void)
 {
+#ifdef KERNEL_LINUX
         int status;
 	unsigned long long val;
 	int i = 0;
 	FILE *fp;
-	char filename[BUFSIZE];
+	char filename[256];
 	char buffer[16];
 
 	for (i = 0; i < num_cpu; i++)
 	{
-		status = snprintf (filename, BUFSIZE, "/sys/devices/system/cpu/cpu%d/cpufreq/cpuinfo_cur_freq", i);
-    		if (status < 1 || status >= BUFSIZE)
-			return;
+		status = snprintf (filename, sizeof (filename),
+				"/sys/devices/system/cpu/cpu%d/cpufreq/"
+				"scaling_cur_freq", i);
+    		if (status < 1 || status >= sizeof (filename))
+			return (-1);
 
 		if ((fp = fopen (filename, "r")) == NULL)
 		{
 			syslog (LOG_WARNING, "cpufreq: fopen: %s", strerror (errno));
-			return;
+			return (-1);
 		}
 
 		if (fgets (buffer, 16, fp) == NULL)
 		{
 			syslog (LOG_WARNING, "cpufreq: fgets: %s", strerror (errno));
-			return;
+			fclose (fp);
+			return (-1);
 		}
 
 		if (fclose (fp))
@@ -126,13 +136,19 @@ void cpufreq_read (void)
 
 		cpufreq_submit (i, val);
 	}
-}
+#endif /* defined(KERNEL_LINUX) */
+
+	return (0);
+} /* int cpufreq_read */
+#endif /* CPUFREQ_HAVE_READ */
 #undef BUFSIZE
 
 void module_register (void)
 {
-	plugin_register (MODULE_NAME, cpufreq_init, cpufreq_read, cpufreq_write);
-}
+	plugin_register_data_set (&data_set);
 
-#undef MODULE_NAME
-#endif /* COLLECT_CPUFREQ */
+#if CPUFREQ_HAVE_READ
+	plugin_register_init ("cpufreq", cpufreq_init);
+	plugin_register_read ("cpufreq", cpufreq_read);
+#endif /* CPUFREQ_HAVE_READ */
+}