* 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
-
+ *
+ * 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)
-{
- value_t values[1];
- value_list_t vl = VALUE_LIST_INIT;
-
- values[0].derive = (derive_t) 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);
-}
+static void cpusleep_submit(derive_t cpu_sleep) {
+ value_list_t vl = VALUE_LIST_INIT;
+
+ vl.values = &(value_t){.derive = cpu_sleep};
+ vl.values_len = 1;
+ sstrncpy(vl.plugin, "cpusleep", sizeof(vl.plugin));
+ sstrncpy(vl.type, "total_time_in_ms", sizeof(vl.type));
-static int cpusleep_read(void)
-{
- struct timespec b, m;
- if ( clock_gettime(CLOCK_BOOTTIME, &b) < 0 )
- {
- ERROR("cpusleep plugin: clock_boottime failed");
- return (-1);
- }
+ plugin_dispatch_values(&vl);
+}
- if ( clock_gettime(CLOCK_MONOTONIC, &m) < 0 )
- {
- ERROR("cpusleep plugin: clock_monotonic failed");
- return (-1);
- }
+static int cpusleep_read(void) {
+ struct timespec b, m;
+ 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);
+ // to avoid false positives in counter overflow due to reboot,
+ // 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 */
projects / collectd.git / blobdiff