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// 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.
// +build openbsd
// +build !nomeminfo
package collector
import (
"fmt"
)
/*
#include <sys/param.h>
#include <sys/types.h>
#include <sys/mount.h>
#include <sys/sysctl.h>
int
sysctl_uvmexp(struct uvmexp *uvmexp)
{
static int uvmexp_mib[] = {CTL_VM, VM_UVMEXP};
size_t sz = sizeof(struct uvmexp);
if(sysctl(uvmexp_mib, 2, uvmexp, &sz, NULL, 0) < 0)
return -1;
return 0;
}
int
sysctl_bcstats(struct bcachestats *bcstats)
{
static int bcstats_mib[] = {CTL_VFS, VFS_GENERIC, VFS_BCACHESTAT};
size_t sz = sizeof(struct bcachestats);
if(sysctl(bcstats_mib, 3, bcstats, &sz, NULL, 0) < 0)
return -1;
return 0;
}
*/
import "C"
func (c *meminfoCollector) getMemInfo() (map[string]float64, error) {
var uvmexp C.struct_uvmexp
var bcstats C.struct_bcachestats
if _, err := C.sysctl_uvmexp(&uvmexp); err != nil {
return nil, fmt.Errorf("sysctl CTL_VM VM_UVMEXP failed: %w", err)
}
if _, err := C.sysctl_bcstats(&bcstats); err != nil {
return nil, fmt.Errorf("sysctl CTL_VFS VFS_GENERIC VFS_BCACHESTAT failed: %w", err)
}
ps := float64(uvmexp.pagesize)
// see uvm(9)
return map[string]float64{
"active_bytes": ps * float64(uvmexp.active),
"cache_bytes": ps * float64(bcstats.numbufpages),
"free_bytes": ps * float64(uvmexp.free),
"inactive_bytes": ps * float64(uvmexp.inactive),
"size_bytes": ps * float64(uvmexp.npages),
"swap_size_bytes": ps * float64(uvmexp.swpages),
"swap_used_bytes": ps * float64(uvmexp.swpginuse),
"swapped_in_pages_bytes_total": ps * float64(uvmexp.pgswapin),
"swapped_out_pages_bytes_total": ps * float64(uvmexp.pgswapout),
"wired_bytes": ps * float64(uvmexp.wired),
}, nil
}
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