01. Word Count add profile code

wordcount/README.md

@@ -8,8 +8,18 @@ A simple timer has been used to track execution time.
 
 Provide the name of the text file as a command line argument.
 
-`go run main.go moby.txt`  
+`go run main.go sherlock.txt`  
 
 Example file to use:
-https://www.gutenberg.org/cache/epub/2701/pg2701.txt
+https://www.gutenberg.org/ebooks/100
 
+
+# Execution time
+
+For this branch:
+`"shakespeare.txt": 741200 words, duration: 3422897ms`
+
+
+# To view profile
+
+`go tool pprof -http=:8080 cpuprofile.pprof`  

wordcount/main.go

@@ -5,6 +5,7 @@ import (
 	"io"
 	"log"
 	"os"
+	"runtime/pprof"
 	"time"
 	"unicode"
 )
@@ -21,6 +22,13 @@ func main() {
 		log.Fatalf("could not open file %q: %v", os.Args[1], err)
 	}
 
+	fc, err := os.Create("cpuprofile.pprof")
+	if err != nil {
+		log.Fatal(err)
+	}
+	pprof.StartCPUProfile(fc)
+	defer pprof.StopCPUProfile()
+
 	start := time.Now()
 	words := 0
 	inword := false