Add v16.7.2

vendor/github.com/power-devops/perfstat/cpustat.go

@@ -0,0 +1,138 @@
+// +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"
+)
+
+var old_cpu_total_stat *C.perfstat_cpu_total_t
+
+func init() {
+	old_cpu_total_stat = (*C.perfstat_cpu_total_t)(C.malloc(C.sizeof_perfstat_cpu_total_t))
+	C.perfstat_cpu_total(nil, old_cpu_total_stat, C.sizeof_perfstat_cpu_total_t, 1)
+}
+
+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
+}
+
+func CpuUtilTotalStat() (*CPUUtil, error) {
+	var cpuutil *C.perfstat_cpu_util_t
+	var new_cpu_total_stat *C.perfstat_cpu_total_t
+	var data C.perfstat_rawdata_t
+
+	new_cpu_total_stat = (*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(cpuutil))
+
+	r := C.perfstat_cpu_total(nil, new_cpu_total_stat, C.sizeof_perfstat_cpu_total_t, 1)
+	if r <= 0 {
+		C.free(unsafe.Pointer(new_cpu_total_stat))
+		return nil, fmt.Errorf("error perfstat_cpu_total()")
+	}
+
+	data._type = C.UTIL_CPU_TOTAL
+	data.curstat = unsafe.Pointer(new_cpu_total_stat)
+	data.prevstat = unsafe.Pointer(old_cpu_total_stat)
+	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)
+	C.free(unsafe.Pointer(old_cpu_total_stat))
+	old_cpu_total_stat = new_cpu_total_stat
+	if r <= 0 {
+		return nil, fmt.Errorf("error perfstat_cpu_util()")
+	}
+	u := perfstatcpuutil2cpuutil(cpuutil)
+	return &u, nil
+}
+