**/
#include "collectd.h"
+
#include "common.h"
#include "plugin.h"
#ifdef HAVE_SYS_SYSCTL_H
-# include <sys/sysctl.h>
+#include <sys/sysctl.h>
#endif
#if HAVE_SYSCTLBYNAME
/* #endif KERNEL_LINUX */
#elif HAVE_PERFSTAT
-# include <sys/protosw.h>
-# include <libperfstat.h>
+#include <libperfstat.h>
+#include <sys/protosw.h>
/* #endif HAVE_PERFSTAT */
#else
-# error "No applicable input method."
+#error "No applicable input method."
#endif
-static void cs_submit (derive_t context_switches)
-{
- value_t values[1];
- value_list_t vl = VALUE_LIST_INIT;
-
- values[0].derive = (derive_t) context_switches;
+static void cs_submit(derive_t context_switches) {
+ value_list_t vl = VALUE_LIST_INIT;
- vl.values = values;
- vl.values_len = 1;
- sstrncpy (vl.host, hostname_g, sizeof (vl.host));
- sstrncpy (vl.plugin, "contextswitch", sizeof (vl.plugin));
- sstrncpy (vl.type, "contextswitch", sizeof (vl.type));
+ vl.values = &(value_t){.derive = context_switches};
+ vl.values_len = 1;
+ sstrncpy(vl.plugin, "contextswitch", sizeof(vl.plugin));
+ sstrncpy(vl.type, "contextswitch", sizeof(vl.type));
- plugin_dispatch_values (&vl);
+ plugin_dispatch_values(&vl);
}
-static int cs_read (void)
-{
+static int cs_read(void) {
#if HAVE_SYSCTLBYNAME
- int value = 0;
- size_t value_len = sizeof (value);
- int status;
-
- status = sysctlbyname ("vm.stats.sys.v_swtch",
- &value, &value_len,
- /* new pointer = */ NULL, /* new length = */ 0);
- if (status != 0)
- {
- ERROR("contextswitch plugin: sysctlbyname "
- "(vm.stats.sys.v_swtch) failed");
- return (-1);
- }
-
- cs_submit (value);
+ int value = 0;
+ size_t value_len = sizeof(value);
+ int status;
+
+ status = sysctlbyname("vm.stats.sys.v_swtch", &value, &value_len,
+ /* new pointer = */ NULL, /* new length = */ 0);
+ if (status != 0) {
+ ERROR("contextswitch plugin: sysctlbyname "
+ "(vm.stats.sys.v_swtch) failed");
+ return -1;
+ }
+
+ cs_submit(value);
/* #endif HAVE_SYSCTLBYNAME */
#elif KERNEL_LINUX
- FILE *fh;
- char buffer[64];
- int numfields;
- char *fields[3];
- derive_t result = 0;
- int status = -2;
-
- fh = fopen ("/proc/stat", "r");
- if (fh == NULL) {
- ERROR ("contextswitch plugin: unable to open /proc/stat: %s",
- sstrerror (errno, buffer, sizeof (buffer)));
- return (-1);
- }
-
- while (fgets(buffer, sizeof(buffer), fh) != NULL)
- {
- char *endptr;
-
- numfields = strsplit(buffer, fields, STATIC_ARRAY_SIZE (fields));
- if (numfields != 2)
- continue;
-
- if (strcmp("ctxt", fields[0]) != 0)
- continue;
-
- errno = 0;
- endptr = NULL;
- result = (derive_t) strtoll (fields[1], &endptr, /* base = */ 10);
- if ((endptr == fields[1]) || (errno != 0)) {
- ERROR ("contextswitch plugin: Cannot parse ctxt value: %s",
- fields[1]);
- status = -1;
- break;
- }
-
- cs_submit(result);
- status = 0;
- break;
- }
- fclose(fh);
-
- if (status == -2)
- ERROR ("contextswitch plugin: Unable to find context switch value.");
+ FILE *fh;
+ char buffer[64];
+ int numfields;
+ char *fields[3];
+ derive_t result = 0;
+ int status = -2;
+
+ fh = fopen("/proc/stat", "r");
+ if (fh == NULL) {
+ ERROR("contextswitch plugin: unable to open /proc/stat: %s", STRERRNO);
+ return -1;
+ }
+
+ while (fgets(buffer, sizeof(buffer), fh) != NULL) {
+ char *endptr;
+
+ numfields = strsplit(buffer, fields, STATIC_ARRAY_SIZE(fields));
+ if (numfields != 2)
+ continue;
+
+ if (strcmp("ctxt", fields[0]) != 0)
+ continue;
+
+ errno = 0;
+ endptr = NULL;
+ result = (derive_t)strtoll(fields[1], &endptr, /* base = */ 10);
+ if ((endptr == fields[1]) || (errno != 0)) {
+ ERROR("contextswitch plugin: Cannot parse ctxt value: %s", fields[1]);
+ status = -1;
+ break;
+ }
+
+ cs_submit(result);
+ status = 0;
+ break;
+ }
+ fclose(fh);
+
+ if (status == -2)
+ ERROR("contextswitch plugin: Unable to find context switch value.");
/* #endif KERNEL_LINUX */
#elif HAVE_PERFSTAT
- int status = 0;
- perfstat_cpu_total_t perfcputotal;
-
- status = perfstat_cpu_total(NULL, &perfcputotal, sizeof(perfstat_cpu_total_t), 1);
- if (status < 0)
- {
- char errbuf[1024];
- ERROR ("contextswitch plugin: perfstat_cpu_total: %s",
- sstrerror (errno, errbuf, sizeof (errbuf)));
- return (-1);
- }
-
- cs_submit(perfcputotal.pswitch);
- status = 0;
+ int status = 0;
+ perfstat_cpu_total_t perfcputotal;
+
+ status =
+ perfstat_cpu_total(NULL, &perfcputotal, sizeof(perfstat_cpu_total_t), 1);
+ if (status < 0) {
+ ERROR("contextswitch plugin: perfstat_cpu_total: %s", STRERRNO);
+ return -1;
+ }
+
+ cs_submit(perfcputotal.pswitch);
+ status = 0;
#endif /* defined(HAVE_PERFSTAT) */
- return status;
+ return status;
}
-void module_register (void)
-{
- plugin_register_read ("contextswitch", cs_read);
+void module_register(void) {
+ plugin_register_read("contextswitch", cs_read);
} /* void module_register */