From e3538f0cd3e5e428b94906b4bb01cfb35b90727c Mon Sep 17 00:00:00 2001
From: charlie <3140647@qq.com>
Date: Wed, 30 Mar 2022 15:50:42 +0800
Subject: [PATCH] mem usage

---
 sys/show_usage.go | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 sys/show_usage.go

diff --git a/sys/show_usage.go b/sys/show_usage.go
new file mode 100644
index 0000000..1cbd7d9
--- /dev/null
+++ b/sys/show_usage.go
@@ -0,0 +1,35 @@
+package sys
+
+import (
+	"fmt"
+	"runtime"
+)
+
+type MemUsage struct {
+	Alloc      float64
+	TotalAlloc float64
+	Sys        float64
+	NumGC      uint32
+}
+
+func (m MemUsage) String() string {
+	return fmt.Sprintf("Alloc = %.2fMB TotalAlloc = %.2fMB Sys = %.2fMB NumGC = %v",
+		m.Alloc,
+		m.TotalAlloc,
+		m.Sys,
+		m.NumGC)
+}
+
+func ShowMemUsage() MemUsage {
+	var m runtime.MemStats
+
+	runtime.ReadMemStats(&m)
+	mb := 1024 * 1024.0
+
+	return MemUsage{
+		Alloc:      float64(m.Alloc) / mb,
+		TotalAlloc: float64(m.TotalAlloc) / mb,
+		Sys:        float64(m.Sys) / mb,
+		NumGC:      m.NumGC,
+	}
+}