initial commit

1 files changed, 48 insertions, 0 deletions

diff --git a/main.go b/main.go
new file mode 100644
index 0000000..7eba79e
--- /dev/null
+++ b/main.go
@@ -0,0 +1,48 @@
+package main
+
+import (
+	"html/template"
+	"log"
+	"net/http"
+	"os"
+	"sync/atomic"
+
+	"embed"
+)
+
+/*
+#include <stdint.h>
+extern unsigned long int log2lzcnt(unsigned long int);
+*/
+import "C"
+
+//go:embed templates
+var templates embed.FS
+
+func main() {
+	counter := atomic.Uint64{}
+	host := ":8080"
+	if len(os.Args) == 2 {
+		host = os.Args[1]
+	}
+
+	tmpl, err := template.ParseFS(templates, "templates/*.html")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		n := counter.Add(1)
+		payload := struct {
+			Requests  uint64
+			Log2lzcnt uint64
+		}{
+			Requests:  n,
+			Log2lzcnt: uint64(C.log2lzcnt(C.uint64_t(n))),
+		}
+
+		tmpl.Execute(w, payload)
+	})
+
+	http.ListenAndServe(host, nil)
+}