add: 锁的使用

channel/mutex/basic/main.go

@@ -0,0 +1,34 @@
+package main
+
+import (
+	"fmt"
+	"sync"
+	"time"
+)
+
+type Sth struct {
+	x    int64
+	wg   sync.WaitGroup
+	lock sync.Mutex
+}
+
+func (s *Sth) add() {
+	for i := 0; i < 10000; i++ {
+		s.lock.Lock()
+		s.x++
+		s.lock.Unlock()
+	}
+	s.wg.Done()
+}
+
+func main() {
+	var s Sth
+	s.wg.Add(2)
+	go s.add()
+	go s.add()
+	s.wg.Wait()
+	fmt.Println(s)
+
+	time.Sleep(time.Second)
+	fmt.Println("xiaowei zhaodandan")
+}

channel/mutex/rwlock/main.go

@@ -0,0 +1,47 @@
+package main
+
+import (
+	"fmt"
+	"sync"
+	"time"
+)
+
+var (
+	x      int64
+	wg     sync.WaitGroup
+	rwlock sync.RWMutex
+	lock   sync.Mutex
+)
+
+func main() {
+	start := time.Now()
+	for i := 0; i < 10; i++ {
+		wg.Add(1)
+		go write()
+	}
+	for i := 0; i < 100; i++ {
+		wg.Add(1)
+		go read()
+	}
+	wg.Wait()
+	fmt.Println("cost:", time.Since(start))
+}
+
+func read() {
+	//lock.Lock()
+	rwlock.RLock()
+	time.Sleep(time.Millisecond)
+	//lock.Unlock()
+	rwlock.RUnlock()
+	wg.Done()
+}
+
+func write() {
+	rwlock.Lock()
+	//lock.Lock()
+	x = x + 1
+	time.Sleep(10 * time.Millisecond)
+	//lock.Unlock()
+	rwlock.Unlock()
+	wg.Done()
+}

web/framework/framework-context/main.go

@@ -13,9 +13,13 @@ func main() {
 		c.String(200, "hello,%v", c.Query("name"))
 	})
 	engine.POST("/login", func(c *gee.Context) {
+		//c.JSON(200, gee.H{
+		//	"username": "xxxx",
+		//	"password": "1234",
+		//})
 		c.JSON(200, gee.H{
-			"username": "xxxx",
+			"username": c.PostForm("username"),
-			"password": "1234",
+			"password": c.PostForm("password"),
 		})
 	})
 	_ = engine.Run(":9000")

web/framework/framework/gee/gee.go

@@ -1 +1,46 @@
 package gee
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+)
+
+type HandlerFunc func(w http.ResponseWriter, r *http.Request)
+
+type Engine struct {
+	router map[string]HandlerFunc
+}
+
+func New() *Engine {
+	return &Engine{
+		router: make(map[string]HandlerFunc),
+	}
+}
+
+func (e *Engine) addRoute(method string, pattern string, handler HandlerFunc) {
+	key := method + "-" + pattern
+	e.router[key] = handler
+	log.Println(e.router)
+}
+
+func (e *Engine) GET(pattern string, handler HandlerFunc) {
+	e.addRoute("GET", pattern, handler)
+}
+
+func (e *Engine) POST(pattern string, handler HandlerFunc) {
+	e.addRoute("POST", pattern, handler)
+}
+
+func (e *Engine) Run(addr string) error {
+	return http.ListenAndServe(addr, e)
+}
+
+func (e *Engine) ServeHTTP(writer http.ResponseWriter, request *http.Request) {
+	key := request.Method + "-" + request.URL.Path
+	if handler, ok := e.router[key]; ok {
+		handler(writer, request)
+	} else {
+		_, _ = fmt.Fprintf(writer, "404 not found:%v\n", request.URL)
+	}
+}

web/framework/framework/main.go

@@ -1 +1,19 @@
-package framework
+package main
+
+import (
+	"fmt"
+	"golanglearn/web/framework/framework/gee"
+	"net/http"
+)
+
+func main() {
+	engine := gee.New()
+	engine.GET("/", func(w http.ResponseWriter, r *http.Request) {
+		fmt.Fprintf(w, "hello web frame work")
+	})
+
+	engine.GET("/hello", func(w http.ResponseWriter, r *http.Request) {
+		fmt.Fprintf(w, "hello web frame work")
+	})
+	engine.Run(":9000")
+}

web/framework/hander-basic/main.go

@@ -11,7 +11,7 @@ type Engine struct {
 
 // 实现Handler的ServerHTTP方法
 func (e *Engine) ServeHTTP(w http.ResponseWriter, r *http.Request) {
-	switch r.RequestURI {
+	switch r.URL.Path {
 	case "/":
 		fmt.Fprint(w, "hello handler-basic")
 	case "/web":