mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-12-27 06:29:50 -08:00
78 lines
2.5 KiB
Go
78 lines
2.5 KiB
Go
// Copyright 2015 The Prometheus Authors
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
//go:build !nomeminfo
|
|
// +build !nomeminfo
|
|
|
|
package collector
|
|
|
|
// #include <mach/mach_host.h>
|
|
// #include <sys/sysctl.h>
|
|
// typedef struct xsw_usage xsw_usage_t;
|
|
import "C"
|
|
|
|
import (
|
|
"encoding/binary"
|
|
"fmt"
|
|
"unsafe"
|
|
|
|
"golang.org/x/sys/unix"
|
|
)
|
|
|
|
func (c *meminfoCollector) getMemInfo() (map[string]float64, error) {
|
|
host := C.mach_host_self()
|
|
infoCount := C.mach_msg_type_number_t(C.HOST_VM_INFO64_COUNT)
|
|
vmstat := C.vm_statistics64_data_t{}
|
|
ret := C.host_statistics64(
|
|
C.host_t(host),
|
|
C.HOST_VM_INFO64,
|
|
C.host_info_t(unsafe.Pointer(&vmstat)),
|
|
&infoCount,
|
|
)
|
|
if ret != C.KERN_SUCCESS {
|
|
return nil, fmt.Errorf("Couldn't get memory statistics, host_statistics returned %d", ret)
|
|
}
|
|
totalb, err := unix.Sysctl("hw.memsize")
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
swapraw, err := unix.SysctlRaw("vm.swapusage")
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
swap := (*C.xsw_usage_t)(unsafe.Pointer(&swapraw[0]))
|
|
|
|
// Syscall removes terminating NUL which we need to cast to uint64
|
|
total := binary.LittleEndian.Uint64([]byte(totalb + "\x00"))
|
|
|
|
var pageSize C.vm_size_t
|
|
C.host_page_size(C.host_t(host), &pageSize)
|
|
|
|
ps := float64(pageSize)
|
|
return map[string]float64{
|
|
"active_bytes": ps * float64(vmstat.active_count),
|
|
"compressed_bytes": ps * float64(vmstat.compressor_page_count),
|
|
"inactive_bytes": ps * float64(vmstat.inactive_count),
|
|
"wired_bytes": ps * float64(vmstat.wire_count),
|
|
"free_bytes": ps * float64(vmstat.free_count),
|
|
"swapped_in_bytes_total": ps * float64(vmstat.pageins),
|
|
"swapped_out_bytes_total": ps * float64(vmstat.pageouts),
|
|
"internal_bytes": ps * float64(vmstat.internal_page_count),
|
|
"purgeable_bytes": ps * float64(vmstat.purgeable_count),
|
|
"total_bytes": float64(total),
|
|
"swap_used_bytes": float64(swap.xsu_used),
|
|
"swap_total_bytes": float64(swap.xsu_total),
|
|
}, nil
|
|
}
|