net/http: new benchmark to measure server without network

No net package involved. And with ReportAllocs we can see
how much garbage is created per request.

R=adg, dave
CC=golang-dev
https://golang.org/cl/7913044

diff --git a/src/pkg/net/http/serve_test.go b/src/pkg/net/http/serve_test.go
index 5b9cd97184d6bdfc505c8ada48143571799860f0..5adde545f82c69e3e5ffdcbb4474086995b65a0f 100644 (file)
--- a/src/pkg/net/http/serve_test.go
+++ b/src/pkg/net/http/serve_test.go
@@ -1620,3 +1620,34 @@ func BenchmarkServer(b *testing.B) {
                b.Errorf("Test failure: %v, with output: %s", err, out)
        }
 }
+
+func BenchmarkServerFakeConnNoKeepAlive(b *testing.B) {
+       b.ReportAllocs()
+       req := []byte(strings.Replace(`GET / HTTP/1.0
+Host: golang.org
+Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
+User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_2) AppleWebKit/537.17 (KHTML, like Gecko) Chrome/24.0.1312.52 Safari/537.17
+Accept-Encoding: gzip,deflate,sdch
+Accept-Language: en-US,en;q=0.8
+Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
+
+`, "\n", "\r\n", -1))
+       res := []byte("Hello world!\n")
+
+       conn := &testConn{
+               closec: make(chan bool),
+       }
+       handler := HandlerFunc(func(rw ResponseWriter, r *Request) {
+               rw.Header().Set("Content-Type", "text/html; charset=utf-8")
+               rw.Write(res)
+       })
+       ln := new(oneConnListener)
+       for i := 0; i < b.N; i++ {
+               conn.readBuf.Reset()
+               conn.writeBuf.Reset()
+               conn.readBuf.Write(req)
+               ln.conn = conn
+               Serve(ln, handler)
+               <-conn.closec
+       }
+}