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// +build aix
package perfstat
/*
#cgo LDFLAGS: -lperfstat
#include <libperfstat.h>
#include <stdlib.h>
#include <string.h>
#include "c_helpers.h"
*/
import "C"
import (
"fmt"
"runtime"
"time"
"unsafe"
)
func CpuStat() ([]CPU, error) {
var cpustat *C.perfstat_cpu_t
var cpu C.perfstat_id_t
ncpu := runtime.NumCPU()
cpustat_len := C.sizeof_perfstat_cpu_t * C.ulong(ncpu)
cpustat = (*C.perfstat_cpu_t)(C.malloc(cpustat_len))
defer C.free(unsafe.Pointer(cpustat))
C.strcpy(&cpu.name[0], C.CString(C.FIRST_CPU))
r := C.perfstat_cpu(&cpu, cpustat, C.sizeof_perfstat_cpu_t, C.int(ncpu))
if r <= 0 {
return nil, fmt.Errorf("error perfstat_cpu()")
}
c := make([]CPU, r)
for i := 0; i < int(r); i++ {
n := C.get_cpu_stat(cpustat, C.int(i))
if n != nil {
c[i] = perfstatcpu2cpu(n)
}
}
return c, nil
}
func CpuTotalStat() (*CPUTotal, error) {
var cpustat *C.perfstat_cpu_total_t
cpustat = (*C.perfstat_cpu_total_t)(C.malloc(C.sizeof_perfstat_cpu_total_t))
defer C.free(unsafe.Pointer(cpustat))
r := C.perfstat_cpu_total(nil, cpustat, C.sizeof_perfstat_cpu_total_t, 1)
if r <= 0 {
return nil, fmt.Errorf("error perfstat_cpu_total()")
}
c := perfstatcputotal2cputotal(cpustat)
return &c, nil
}
func CpuUtilStat(intvl time.Duration) (*CPUUtil, error) {
var cpuutil *C.perfstat_cpu_util_t
var newt *C.perfstat_cpu_total_t
var oldt *C.perfstat_cpu_total_t
var data C.perfstat_rawdata_t
oldt = (*C.perfstat_cpu_total_t)(C.malloc(C.sizeof_perfstat_cpu_total_t))
newt = (*C.perfstat_cpu_total_t)(C.malloc(C.sizeof_perfstat_cpu_total_t))
cpuutil = (*C.perfstat_cpu_util_t)(C.malloc(C.sizeof_perfstat_cpu_util_t))
defer C.free(unsafe.Pointer(oldt))
defer C.free(unsafe.Pointer(newt))
defer C.free(unsafe.Pointer(cpuutil))
r := C.perfstat_cpu_total(nil, oldt, C.sizeof_perfstat_cpu_total_t, 1)
if r <= 0 {
return nil, fmt.Errorf("error perfstat_cpu_total()")
}
time.Sleep(intvl)
r = C.perfstat_cpu_total(nil, newt, C.sizeof_perfstat_cpu_total_t, 1)
if r <= 0 {
return nil, fmt.Errorf("error perfstat_cpu_total()")
}
data._type = C.UTIL_CPU_TOTAL
data.curstat = unsafe.Pointer(newt)
data.prevstat = unsafe.Pointer(oldt)
data.sizeof_data = C.sizeof_perfstat_cpu_total_t
data.cur_elems = 1
data.prev_elems = 1
r = C.perfstat_cpu_util(&data, cpuutil, C.sizeof_perfstat_cpu_util_t, 1)
if r <= 0 {
return nil, fmt.Errorf("error perfstat_cpu_util()")
}
u := perfstatcpuutil2cpuutil(cpuutil)
return &u, nil
}
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