photoprism/pkg/env/resources.go

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package env
import (
"fmt"
"runtime"
"github.com/dustin/go-humanize"
"github.com/pbnjay/memory"
)
// Resources represents runtime resource information.
type Resources struct {
Cores int `json:"cores"`
Routines int `json:"routines"`
Memory struct {
Total uint64 `json:"total"`
Free uint64 `json:"free"`
Used uint64 `json:"used"`
Reserved uint64 `json:"reserved"`
Info string `json:"info"`
} `json:"memory"`
}
// Update runtime resource information.
func (r *Resources) Update() {
var mem runtime.MemStats
runtime.ReadMemStats(&mem)
r.Cores = runtime.NumCPU()
r.Routines = runtime.NumGoroutine()
r.Memory.Total = memory.TotalMemory()
r.Memory.Free = memory.FreeMemory()
r.Memory.Used = mem.Alloc
r.Memory.Reserved = mem.Sys
r.Memory.Info = fmt.Sprintf("Used %s / Reserved %s", humanize.Bytes(r.Memory.Used), humanize.Bytes(r.Memory.Reserved))
}