/
memstats.go
72 lines (56 loc) · 1.63 KB
/
memstats.go
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/*
* NETCAP - Traffic Analysis Framework
* Copyright (c) 2017-2020 Philipp Mieden <dreadl0ck [at] protonmail [dot] ch>
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package collector
import (
"encoding/json"
"runtime"
"github.com/dustin/go-humanize"
)
// memStats saves selected memory stats from the go runtime in human readable format
type memStats struct {
// bytes as human readable string
Alloc string
TotalAlloc string
Sys string
Mallocs int
Frees int
LiveObjects int
PauseTotalNs int
NumGC uint32
NumGoroutine int
}
func (m *memStats) String() string {
b, _ := json.Marshal(m)
return string(b)
}
func newMemStats() *memStats {
var (
m = new(memStats)
rtm runtime.MemStats
)
// read mem stats
runtime.ReadMemStats(&rtm)
// collect number of goroutines
m.NumGoroutine = runtime.NumGoroutine()
// collect memory stats
m.Alloc = humanize.Bytes(rtm.Alloc)
m.TotalAlloc = humanize.Bytes(rtm.TotalAlloc)
m.Sys = humanize.Bytes(rtm.Sys)
m.Mallocs = int(rtm.Mallocs)
m.Frees = int(rtm.Frees)
m.LiveObjects = m.Mallocs - m.Frees
// GC stats
m.PauseTotalNs = int(rtm.PauseTotalNs)
m.NumGC = rtm.NumGC
return m
}