From c97f78aae969f337ba513c562f53246cd33cd4bc Mon Sep 17 00:00:00 2001
From: "Paul Buetow (europa)" <paul@buetow.org>
Date: Mon, 25 May 2015 22:12:19 +0100
Subject: save processes into alternate sports in order to compare them later
 on

---
 gstat/main.go | 42 +++++++++++++++++++++++++++---------------
 1 file changed, 27 insertions(+), 15 deletions(-)

diff --git a/gstat/main.go b/gstat/main.go
index 9aefa60..9d02b44 100644
--- a/gstat/main.go
+++ b/gstat/main.go
@@ -7,9 +7,12 @@ import (
 	"time"
 )
 
-type processMap map[string]process.Process
-
-var lastP processMap
+type twoProcesses struct {
+	flag   bool
+	first  process.Process
+	second process.Process
+}
+type processMap map[string]twoProcesses
 
 func gather(timer <-chan bool, d chan<- diskstats.Diskstats, p chan<- process.Process) {
 	for {
@@ -29,17 +32,27 @@ func gather(timer <-chan bool, d chan<- diskstats.Diskstats, p chan<- process.Pr
 	close(p)
 }
 
-func receive1(diskstats <-chan diskstats.Diskstats) {
-	for diskstats := range diskstats {
-		diskstats.Print()
+func receiveD(diskstats <-chan diskstats.Diskstats) {
+	for d := range diskstats {
+		//diskstats.Print()
+		// Implemented later
+		_ = d
 	}
 }
 
-func receive2(processes <-chan process.Process) {
-	lastP = make(processMap)
-	for process := range processes {
-		lastP[process.Id] = process
-		process.Print()
+func receiveP(processes <-chan process.Process) {
+	lastP := make(processMap)
+	for p := range processes {
+		if val, ok := lastP[p.Id]; ok {
+			if val.flag {
+				val.second = p
+			} else {
+				val.first = p
+			}
+			val.flag = !val.flag
+		} else {
+			lastP[p.Id] = twoProcesses{flag: true, first: p}
+		}
 	}
 }
 
@@ -49,14 +62,13 @@ func main() {
 	processes := make(chan process.Process)
 
 	go gather(timer, diskstats, processes)
-	go receive1(diskstats)
-	go receive2(processes)
+
+	go receiveD(diskstats)
+	go receiveP(processes)
 
 	for counter := 0; counter < 3; counter++ {
 		timer <- true
 		time.Sleep(time.Second * 2)
-
-		fmt.Printf("Next... %d\n", counter)
 	}
 	timer <- false
 
-- 
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