From 055349aba3a122d62bd643966ad2cd8c3fcf0438 Mon Sep 17 00:00:00 2001
From: Igor Vasilcovsky <vasilcovsky@gmail.com>
Date: Sat, 9 May 2015 12:40:10 -0400
Subject: [PATCH 1/2] improved detection if service was restarted

---
 service.go | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/service.go b/service.go
index b5632f2..3ecbc50 100644
--- a/service.go
+++ b/service.go
@@ -10,6 +10,10 @@ import (
 	"github.com/antonholmquist/jason"
 )
 
+var (
+	uptimeCounter = VarName("memstats.PauseTotalNs").ToSlice()
+)
+
 // Service represents constantly updating info about single service.
 type Service struct {
 	Port    string
@@ -18,8 +22,9 @@ type Service struct {
 
 	stacks map[VarName]*Stack
 
-	Err       error
-	Restarted bool
+	Err           error
+	Restarted     bool
+	UptimeCounter int64
 }
 
 // NewService returns new Service object.
@@ -47,6 +52,18 @@ func (s *Service) Update(wg *sync.WaitGroup) {
 	}
 	s.Err = err
 
+	// if memstat.PauseTotalNs less than s.UptimeCounter
+	// then service was restarted
+	c, err := expvar.GetInt64(uptimeCounter...)
+	if err != nil {
+		s.Err = err
+	} else {
+		if s.UptimeCounter > c {
+			s.Restarted = true
+		}
+		s.UptimeCounter = c
+	}
+
 	// Update Cmdline & Name only once
 	if len(s.Cmdline) == 0 {
 		cmdline, err := expvar.GetStringArray("cmdline")

From 6b39ee8005d782c324de4487f18b70eccb382d9e Mon Sep 17 00:00:00 2001
From: Ivan Daniluk <ivan.daniluk@gmail.com>
Date: Tue, 12 May 2015 12:50:25 +0300
Subject: [PATCH 2/2] Added annotation

---
 service.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/service.go b/service.go
index 3ecbc50..ca5420a 100644
--- a/service.go
+++ b/service.go
@@ -11,6 +11,10 @@ import (
 )
 
 var (
+	// uptimeCounter is a variable used for tracking uptime status.
+	// It should be always incrementing and included into default expvar vars.
+	// Could be replaced with something different or made configurable in
+	// the future.
 	uptimeCounter = VarName("memstats.PauseTotalNs").ToSlice()
 )