X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Fcpusleep.c;h=a1c3644752b3bc6689bb85d2f614cd405a00666a;hb=24bdf52decaf93359aab0364fb11420af5cd4a21;hp=46f10409dae5c53927ad590bb128515f1369dab7;hpb=9e07a3a7d90542740cab85c4f12a06b1df14fb59;p=collectd.git

diff --git a/src/cpusleep.c b/src/cpusleep.c
index 46f10409..a1c36447 100644
--- a/src/cpusleep.c
+++ b/src/cpusleep.c
@@ -2,86 +2,78 @@
  * collectd - src/cpusleep.c
  * Copyright (C) 2016 rinigus
  *
+ * The MIT License (MIT)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
  *
-The MIT License (MIT)
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
-
  * Authors:
- *   rinigus <http://github.com/rinigus>
-
- CPU sleep is reported in milliseconds / s. For that, derive type was
- selected and the time difference between BOOT and MONOTONIC clocks
- fed to RRD
- 
- **/
+ *	 rinigus <http://github.com/rinigus>
+ *
+ * CPU sleep is reported in milliseconds of sleep per second of wall
+ * time. For that, the time difference between BOOT and MONOTONIC clocks
+ * is reported using derive type.
+**/
 
 #include "collectd.h"
+
+#include <time.h>
 #include "common.h"
 #include "plugin.h"
-#include <time.h>
 
-static void cpusleep_submit (derive_t cpu_sleep)
-{
+static void cpusleep_submit(derive_t cpu_sleep) {
   value_t values[1];
   value_list_t vl = VALUE_LIST_INIT;
-  
-  values[0].derive = (derive_t) cpu_sleep;
-  
+
+  values[0].derive = cpu_sleep;
+
   vl.values = values;
   vl.values_len = 1;
-  sstrncpy (vl.host, hostname_g, sizeof (vl.host));
-  sstrncpy (vl.plugin, "cpusleep", sizeof (vl.plugin));
-  sstrncpy (vl.type, "cpusleep", sizeof (vl.type));
-  
-  plugin_dispatch_values (&vl);
+  sstrncpy(vl.host, hostname_g, sizeof(vl.host));
+  sstrncpy(vl.plugin, "cpusleep", sizeof(vl.plugin));
+  sstrncpy(vl.type, "total_time_in_ms", sizeof(vl.type));
+
+  plugin_dispatch_values(&vl);
 }
 
-static int cpusleep_read (void)
-{
+static int cpusleep_read(void) {
   struct timespec b, m;
-  if ( clock_gettime(CLOCK_BOOTTIME, &b ) < 0 )
-    {
-      ERROR("cpusleep plugin: clock_gettime CLOCK_MONOTONIC failed");
-      return (-1);
-    }
-
-  if ( clock_gettime(CLOCK_MONOTONIC, &m ) < 0 )
-    {
-      ERROR("cpusleep plugin: clock_gettime CLOCK_MONOTONIC failed");
-      return (-1);
-    }
+  if (clock_gettime(CLOCK_BOOTTIME, &b) < 0) {
+    ERROR("cpusleep plugin: clock_boottime failed");
+    return (-1);
+  }
 
-  double db = b.tv_sec + 1e-9 * b.tv_nsec;
-  double dm = m.tv_sec + 1e-9 * m.tv_nsec;
+  if (clock_gettime(CLOCK_MONOTONIC, &m) < 0) {
+    ERROR("cpusleep plugin: clock_monotonic failed");
+    return (-1);
+  }
 
   // to avoid false positives in counter overflow due to reboot,
-  // derive is used
-  derive_t sleep = (derive_t) ((db-dm) * 1000);  
+  // derive is used. Sleep is calculated in milliseconds
+  derive_t diffsec = b.tv_sec - m.tv_sec;
+  derive_t diffnsec = b.tv_nsec - m.tv_nsec;
+  derive_t sleep = diffsec * 1000 + diffnsec / 1000000;
 
-  cpusleep_submit (sleep);
+  cpusleep_submit(sleep);
 
-  return 0;
+  return (0);
 }
 
-void module_register (void)
-{
-  plugin_register_read ("cpusleep", cpusleep_read);
+void module_register(void) {
+  plugin_register_read("cpusleep", cpusleep_read);
 } /* void module_register */