func (s *CPUStat) Collect() {
// collect CPU stats for All cpus aggregated
var cpuinfo C.host_cpu_load_info_data_t
count := C.mach_msg_type_number_t(C.HOST_CPU_LOAD_INFO_COUNT)
host := C.mach_host_self()
ret := C.host_statistics(C.host_t(host), C.HOST_CPU_LOAD_INFO,
C.host_info_t(unsafe.Pointer(&cpuinfo)), &count)
if ret != C.KERN_SUCCESS {
return
}
s.All.User.Set(uint64(cpuinfo.cpu_ticks[C.CPU_STATE_USER]))
s.All.UserLowPrio.Set(uint64(cpuinfo.cpu_ticks[C.CPU_STATE_NICE]))
s.All.System.Set(uint64(cpuinfo.cpu_ticks[C.CPU_STATE_SYSTEM]))
s.All.Idle.Set(uint64(cpuinfo.cpu_ticks[C.CPU_STATE_IDLE]))
s.All.Total.Set(uint64(cpuinfo.cpu_ticks[C.CPU_STATE_USER]) +
uint64(cpuinfo.cpu_ticks[C.CPU_STATE_SYSTEM]) +
uint64(cpuinfo.cpu_ticks[C.CPU_STATE_NICE]) +
uint64(cpuinfo.cpu_ticks[C.CPU_STATE_IDLE]))
}
func allCPUTimes() ([]CPUTimesStat, error) {
var count C.mach_msg_type_number_t = C.HOST_CPU_LOAD_INFO_COUNT
var cpuload C.host_cpu_load_info_data_t
status := C.host_statistics(C.host_t(C.mach_host_self()),
C.HOST_CPU_LOAD_INFO,
C.host_info_t(unsafe.Pointer(&cpuload)),
&count)
if status != C.KERN_SUCCESS {
return nil, fmt.Errorf("host_statistics error=%d", status)
}
c := CPUTimesStat{
CPU: "cpu-total",
User: float64(cpuload.cpu_ticks[C.CPU_STATE_USER]) / ClocksPerSec,
System: float64(cpuload.cpu_ticks[C.CPU_STATE_SYSTEM]) / ClocksPerSec,
Nice: float64(cpuload.cpu_ticks[C.CPU_STATE_NICE]) / ClocksPerSec,
Idle: float64(cpuload.cpu_ticks[C.CPU_STATE_IDLE]) / ClocksPerSec,
Iowait: -1,
Irq: -1,
Softirq: -1,
Steal: -1,
Guest: -1,
GuestNice: -1,
Stolen: -1,
}
return []CPUTimesStat{c}, nil
}
// stolen from https://github.com/cloudfoundry/gosigar
func getCPUTotalTimes() (*CPUTimesStat, error) {
var count C.mach_msg_type_number_t = C.HOST_CPU_LOAD_INFO_COUNT
var cpuload C.host_cpu_load_info_data_t
status := C.host_statistics(C.host_t(C.mach_host_self()),
C.HOST_CPU_LOAD_INFO,
C.host_info_t(unsafe.Pointer(&cpuload)),
&count)
if status != C.KERN_SUCCESS {
return nil, fmt.Errorf("host_statistics error=%d", status)
}
cpu := CPUTimesStat{
CPU: "total"}
var cpu_ticks = make([]uint32, len(cpuload.cpu_ticks))
for i := range cpuload.cpu_ticks {
cpu_ticks[i] = uint32(cpuload.cpu_ticks[i])
}
fillCPUStats(cpu_ticks, &cpu)
return &cpu, nil
}
func NewProcessStat(m *metrics.MetricContext, Step time.Duration) *ProcessStat {
c := new(ProcessStat)
c.m = m
c.Processes = make(map[string]*PerProcessStat, 1024)
c.hport = C.host_t(C.mach_host_self())
var n int
ticker := time.NewTicker(Step)
go func() {
for _ = range ticker.C {
p := int(len(c.Processes) / 1024)
if n == 0 {
c.Collect(true)
}
// always collect all metrics for first two samples
// and if number of processes < 1024
if p < 1 || n%p == 0 {
c.Collect(false)
}
n++
}
}()
return c
}
func perCPUTimes() ([]CPUTimesStat, error) {
var (
count C.mach_msg_type_number_t
cpuload *C.processor_cpu_load_info_data_t
ncpu C.natural_t
)
status := C.host_processor_info(C.host_t(C.mach_host_self()),
C.PROCESSOR_CPU_LOAD_INFO,
&ncpu,
(*C.processor_info_array_t)(unsafe.Pointer(&cpuload)),
&count)
if status != C.KERN_SUCCESS {
return nil, fmt.Errorf("host_processor_info error=%d", status)
}
// jump through some cgo casting hoops and ensure we properly free
// the memory that cpuload points to
target := C.vm_map_t(C.mach_task_self_)
address := C.vm_address_t(uintptr(unsafe.Pointer(cpuload)))
defer C.vm_deallocate(target, address, C.vm_size_t(ncpu))
// the body of struct processor_cpu_load_info
// aka processor_cpu_load_info_data_t
var cpu_ticks [C.CPU_STATE_MAX]uint32
// copy the cpuload array to a []byte buffer
// where we can binary.Read the data
size := int(ncpu) * binary.Size(cpu_ticks)
buf := C.GoBytes(unsafe.Pointer(cpuload), C.int(size))
bbuf := bytes.NewBuffer(buf)
var ret []CPUTimesStat
for i := 0; i < int(ncpu); i++ {
err := binary.Read(bbuf, binary.LittleEndian, &cpu_ticks)
if err != nil {
return nil, err
}
c := CPUTimesStat{
CPU: fmt.Sprintf("cpu%d", i),
User: float64(cpu_ticks[C.CPU_STATE_USER]) / ClocksPerSec,
System: float64(cpu_ticks[C.CPU_STATE_SYSTEM]) / ClocksPerSec,
Nice: float64(cpu_ticks[C.CPU_STATE_NICE]) / ClocksPerSec,
Idle: float64(cpu_ticks[C.CPU_STATE_IDLE]) / ClocksPerSec,
}
ret = append(ret, c)
}
return ret, nil
}
func (self *CpuList) Get() error {
var count C.mach_msg_type_number_t
var cpuload *C.processor_cpu_load_info_data_t
var ncpu C.natural_t
status := C.host_processor_info(C.host_t(C.mach_host_self()),
C.PROCESSOR_CPU_LOAD_INFO,
&ncpu,
(*C.processor_info_array_t)(unsafe.Pointer(&cpuload)),
&count)
if status != C.KERN_SUCCESS {
return fmt.Errorf("host_processor_info error=%d", status)
}
// jump through some cgo casting hoops and ensure we properly free
// the memory that cpuload points to
target := C.vm_map_t(C.mach_task_self_)
address := C.vm_address_t(uintptr(unsafe.Pointer(cpuload)))
defer C.vm_deallocate(target, address, C.vm_size_t(ncpu))
// the body of struct processor_cpu_load_info
// aka processor_cpu_load_info_data_t
var cpu_ticks [C.CPU_STATE_MAX]uint32
// copy the cpuload array to a []byte buffer
// where we can binary.Read the data
size := int(ncpu) * binary.Size(cpu_ticks)
buf := C.GoBytes(unsafe.Pointer(cpuload), C.int(size))
bbuf := bytes.NewBuffer(buf)
self.List = make([]Cpu, 0, ncpu)
for i := 0; i < int(ncpu); i++ {
cpu := Cpu{}
err := binary.Read(bbuf, binary.LittleEndian, &cpu_ticks)
if err != nil {
return err
}
cpu.User = uint64(cpu_ticks[C.CPU_STATE_USER])
cpu.Sys = uint64(cpu_ticks[C.CPU_STATE_SYSTEM])
cpu.Idle = uint64(cpu_ticks[C.CPU_STATE_IDLE])
cpu.Nice = uint64(cpu_ticks[C.CPU_STATE_NICE])
self.List = append(self.List, cpu)
}
return nil
}
func (c *statCollector) Update(ch chan<- prometheus.Metric) error {
var (
count C.mach_msg_type_number_t
cpuload *C.processor_cpu_load_info_data_t
ncpu C.natural_t
)
status := C.host_processor_info(C.host_t(C.mach_host_self()),
C.PROCESSOR_CPU_LOAD_INFO,
&ncpu,
(*C.processor_info_array_t)(unsafe.Pointer(&cpuload)),
&count)
if status != C.KERN_SUCCESS {
return fmt.Errorf("host_processor_info error=%d", status)
}
// jump through some cgo casting hoops and ensure we properly free
// the memory that cpuload points to
target := C.vm_map_t(C.mach_task_self_)
address := C.vm_address_t(uintptr(unsafe.Pointer(cpuload)))
defer C.vm_deallocate(target, address, C.vm_size_t(ncpu))
// the body of struct processor_cpu_load_info
// aka processor_cpu_load_info_data_t
var cpu_ticks [C.CPU_STATE_MAX]uint32
// copy the cpuload array to a []byte buffer
// where we can binary.Read the data
size := int(ncpu) * binary.Size(cpu_ticks)
buf := (*[1 << 30]byte)(unsafe.Pointer(cpuload))[:size:size]
bbuf := bytes.NewBuffer(buf)
for i := 0; i < int(ncpu); i++ {
err := binary.Read(bbuf, binary.LittleEndian, &cpu_ticks)
if err != nil {
return err
}
for k, v := range map[string]int{
"user": C.CPU_STATE_USER,
"system": C.CPU_STATE_SYSTEM,
"nice": C.CPU_STATE_NICE,
"idle": C.CPU_STATE_IDLE,
} {
ch <- prometheus.MustNewConstMetric(c.cpu, prometheus.CounterValue, float64(cpu_ticks[v])/ClocksPerSec, "cpu"+strconv.Itoa(i), k)
}
}
return nil
}
// stolen from https://github.com/cloudfoundry/gosigar
func getCPUDetailedTimes() ([]CPUTimesStat, error) {
var count C.mach_msg_type_number_t
var cpuload *C.processor_cpu_load_info_data_t
var ncpu C.natural_t
status := C.host_processor_info(C.host_t(C.mach_host_self()),
C.PROCESSOR_CPU_LOAD_INFO,
&ncpu,
(*C.processor_info_array_t)(unsafe.Pointer(&cpuload)),
&count)
if status != C.KERN_SUCCESS {
return nil, fmt.Errorf("host_processor_info error=%d", status)
}
// jump through some cgo casting hoops and ensure we properly free
// the memory that cpuload points to
target := C.vm_map_t(C.mach_task_self_)
address := C.vm_address_t(uintptr(unsafe.Pointer(cpuload)))
defer C.vm_deallocate(target, address, C.vm_size_t(ncpu))
// the body of struct processor_cpu_load_info
// aka processor_cpu_load_info_data_t
var cpu_ticks = make([]uint32, C.CPU_STATE_MAX)
// copy the cpuload array to a []byte buffer
// where we can binary.Read the data
size := int(ncpu) * binary.Size(cpu_ticks)
buf := C.GoBytes(unsafe.Pointer(cpuload), C.int(size))
bbuf := bytes.NewBuffer(buf)
var ret []CPUTimesStat = make([]CPUTimesStat, 0, ncpu+1)
for i := 0; i < int(ncpu); i++ {
err := binary.Read(bbuf, binary.LittleEndian, &cpu_ticks)
if err != nil {
return nil, err
}
cpu := CPUTimesStat{
CPU: strconv.Itoa(i)}
fillCPUStats(cpu_ticks, &cpu)
ret = append(ret, cpu)
}
return ret, nil
}
func cpuTimeTotal() int {
selfHost := C.mach_host_self()
hostInfo := C.malloc(C.size_t(C.HOST_CPU_LOAD_INFO_COUNT))
count := C.mach_msg_type_number_t(C.HOST_CPU_LOAD_INFO_COUNT)
err := C.host_statistics(C.host_t(selfHost), C.HOST_CPU_LOAD_INFO, C.host_info_t(hostInfo), &count)
defer C.free(hostInfo)
if err != C.kern_return_t(C.KERN_SUCCESS) {
return 0
}
return -1
}
func vm_info(vmstat *C.vm_statistics_data_t) error {
var count C.mach_msg_type_number_t = C.HOST_VM_INFO_COUNT
status := C.host_statistics(
C.host_t(C.mach_host_self()),
C.HOST_VM_INFO,
C.host_info_t(unsafe.Pointer(vmstat)),
&count)
if status != C.KERN_SUCCESS {
return fmt.Errorf("host_statistics=%d", status)
}
return nil
}
func HostStatisticsCpuLoadInfo() (*HostCpuLoadInfoData, error) {
var (
count C.mach_msg_type_number_t = C.HOST_CPU_LOAD_INFO_COUNT
cpuload C.host_cpu_load_info_data_t
)
status := C.host_statistics(
C.host_t(C.mach_host_self()),
C.HOST_CPU_LOAD_INFO,
C.host_info_t(unsafe.Pointer(&cpuload)),
&count)
if status != C.KERN_SUCCESS {
return nil, fmt.Errorf("host_statistics error=%d", status)
}
return (*HostCpuLoadInfoData)(&cpuload), nil
}
// New registers with metriccontext and starts metric collection
// every Step
func New(m *metrics.MetricContext, Step time.Duration) *MemStat {
s := new(MemStat)
s.m = m
// initialize all gauges
misc.InitializeMetrics(s, m, "memstat", true)
host := C.mach_host_self()
C.host_page_size(C.host_t(host), &s.Pagesize)
// collect metrics every Step
ticker := time.NewTicker(Step)
go func() {
for _ = range ticker.C {
s.Collect()
}
}()
return s
}
// Collect uses mach interface to populate various memory usage
// metrics
func (s *MemStat) Collect() {
var meminfo C.vm_statistics64_data_t
count := C.mach_msg_type_number_t(C.HOST_VM_INFO64_COUNT)
host := C.mach_host_self()
ret := C.host_statistics64(C.host_t(host), C.HOST_VM_INFO64,
C.host_info_t(unsafe.Pointer(&meminfo)), &count)
if ret != C.KERN_SUCCESS {
return
}
s.RawFree.Set(float64(meminfo.free_count) * float64(s.Pagesize))
s.Active.Set(float64(meminfo.active_count) * float64(s.Pagesize))
s.Inactive.Set(float64(meminfo.inactive_count) * float64(s.Pagesize))
s.Wired.Set(float64(meminfo.wire_count) * float64(s.Pagesize))
s.Purgeable.Set(float64(meminfo.purgeable_count) * float64(s.Pagesize))
s.RawTotal.Set(float64(C.get_phys_memory()))
}
func MemStatMetricsNew(m *metrics.MetricContext, Step time.Duration) *MemStatMetrics {
c := new(MemStatMetrics)
// initialize all gauges
misc.InitializeMetrics(c, m, "memstat")
host := C.mach_host_self()
C.host_page_size(C.host_t(host), &c.Pagesize)
// collect metrics every Step
ticker := time.NewTicker(Step)
go func() {
for _ = range ticker.C {
c.Collect()
}
}()
return c
}
func (self *Cpu) Get() error {
var count C.mach_msg_type_number_t = C.HOST_CPU_LOAD_INFO_COUNT
var cpuload C.host_cpu_load_info_data_t
status := C.host_statistics(C.host_t(C.mach_host_self()),
C.HOST_CPU_LOAD_INFO,
C.host_info_t(unsafe.Pointer(&cpuload)),
&count)
if status != C.KERN_SUCCESS {
return fmt.Errorf("host_statistics error=%d", status)
}
self.User = uint64(cpuload.cpu_ticks[C.CPU_STATE_USER])
self.Sys = uint64(cpuload.cpu_ticks[C.CPU_STATE_SYSTEM])
self.Idle = uint64(cpuload.cpu_ticks[C.CPU_STATE_IDLE])
self.Nice = uint64(cpuload.cpu_ticks[C.CPU_STATE_NICE])
return nil
}
// Collect populates various cpu performance statistics - use MACH interface
func (s *CPUStat) Collect() {
// collect CPU stats for All cpus aggregated
var cpuinfo C.host_cpu_load_info_data_t
var hostinfo C.host_basic_info_data_t
cpuloadnumber := C.mach_msg_type_number_t(C.HOST_CPU_LOAD_INFO_COUNT)
hostnumber := C.mach_msg_type_number_t(C.HOST_BASIC_INFO_COUNT)
host := C.mach_host_self()
ret := C.host_statistics(C.host_t(host), C.HOST_CPU_LOAD_INFO,
C.host_info_t(unsafe.Pointer(&cpuinfo)), &cpuloadnumber)
if ret != C.KERN_SUCCESS {
return
}
ret = C.host_info(C.host_t(host), C.HOST_BASIC_INFO,
C.host_info_t(unsafe.Pointer(&hostinfo)), &hostnumber)
if ret != C.KERN_SUCCESS {
return
}
s.All.User.Set(uint64(cpuinfo.cpu_ticks[C.CPU_STATE_USER]))
s.All.UserLowPrio.Set(uint64(cpuinfo.cpu_ticks[C.CPU_STATE_NICE]))
s.All.System.Set(uint64(cpuinfo.cpu_ticks[C.CPU_STATE_SYSTEM]))
s.All.Idle.Set(uint64(cpuinfo.cpu_ticks[C.CPU_STATE_IDLE]))
s.All.Total.Set(uint64(cpuinfo.cpu_ticks[C.CPU_STATE_USER]) +
uint64(cpuinfo.cpu_ticks[C.CPU_STATE_SYSTEM]) +
uint64(cpuinfo.cpu_ticks[C.CPU_STATE_NICE]) +
uint64(cpuinfo.cpu_ticks[C.CPU_STATE_IDLE]))
s.All.UsageCount.Set(s.All.Usage())
s.All.UserSpaceCount.Set(s.All.UserSpace())
s.All.KernelCount.Set(s.All.Kernel())
s.All.TotalCount.Set(float64(hostinfo.logical_cpu_max))
}
// VirtualMemory returns VirtualmemoryStat.
func VirtualMemory() (*VirtualMemoryStat, error) {
count := C.mach_msg_type_number_t(C.HOST_VM_INFO_COUNT)
var vmstat C.vm_statistics_data_t
status := C.host_statistics(C.host_t(C.mach_host_self()),
C.HOST_VM_INFO,
C.host_info_t(unsafe.Pointer(&vmstat)),
&count)
if status != C.KERN_SUCCESS {
return nil, fmt.Errorf("host_statistics error=%d", status)
}
pageSize := uint64(syscall.Getpagesize())
total, err := getHwMemsize()
if err != nil {
return nil, err
}
totalCount := C.natural_t(total / pageSize)
availableCount := vmstat.inactive_count + vmstat.free_count
usedPercent := 100 * float64(totalCount-availableCount) / float64(totalCount)
usedCount := totalCount - availableCount
return &VirtualMemoryStat{
Total: total,
Available: pageSize * uint64(availableCount),
Used: pageSize * uint64(usedCount),
UsedPercent: usedPercent,
Free: pageSize * uint64(vmstat.free_count),
Active: pageSize * uint64(vmstat.active_count),
Inactive: pageSize * uint64(vmstat.inactive_count),
Wired: pageSize * uint64(vmstat.wire_count),
}, nil
}
func HostSelf() Host {
host := C.mach_host_self()
return Host(host)
}