kvm_getcptime3
Fetch global cpu time statistics
Usage
#include <sys/param.h>
#include <sys/resource.h>
#include <sys/sysctl.h>
#include <kvm.h>
int
kvm_getcptime(kvm_t *kd, long *cp_time);
Library
Kernel Data Access Library (libkvm, -lkvm)
Overview
The kvm_getcptime() function stores the global CPU time statistics from the kernel kd in the array of counters pointed to by cp_time. Note that cp_time should point to an array of CPUSTATES long integers. The format of the counters is identical to that output by the kern.cp_time sysctl.
Caching
This function caches the nlist values for various kernel variables which it reuses in successive calls. You may call the function with kd set to NULL to clear this cache.
Return values
The kvm_getcptime function returns 0 on success and -1 on failure. If an error occurs, then an error message may be retrieved via kvm_geterr(3).
Releases
43 releases since FreeBSD 7.1-RELEASE; the text changed 29 times.