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43 lines
1.0 KiB
43 lines
1.0 KiB
// Copyright 2017 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build !nokvm
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// +build freebsd dragonfly
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package collector
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import (
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"fmt"
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"sync"
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)
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// #cgo LDFLAGS: -lkvm
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// #include "kvm_bsd.h"
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import "C"
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type kvm struct {
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mu sync.Mutex
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hasErr bool
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}
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func (k *kvm) SwapUsedPages() (value uint64, err error) {
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k.mu.Lock()
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defer k.mu.Unlock()
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if C._kvm_swap_used_pages((*C.uint64_t)(&value)) == -1 {
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k.hasErr = true
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return 0, fmt.Errorf("couldn't get kvm stats")
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}
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return value, nil
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}
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