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wine/src/main/java/com/wine/game/wine/common/DeadLock.java

@@ -0,0 +1,53 @@
+package com.wine.game.wine.common;
+/**
+ * @description: 
+ 
+ #　　　Codes are far away from bugs with the animal protecting　　　
+ #　　　　　　　        神兽保佑,代码无bug　
+ 
+ * @author: zeno fung
+ *
+ * @create: 2022-07-26 10:25
+ */
+public class DeadLock {
+    private static Integer resource1 = 1 ;
+    private static Integer resource2 = 2 ;
+    static class Thread1 implements Runnable{
+        @Override
+        public void run() {
+            synchronized (resource1){
+                try {
+                    System.out.println(getClass().getName()+" obtains the lock of resource1!");
+                    Thread.sleep(500);
+                    synchronized (resource2) {
+                        System.out.println(getClass().getName()+" obtains the lock of resource2!");
+                    }
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                }
+            }
+        }
+    }
+    static class Thread2 implements Runnable{
+        @Override
+        public void run() {
+            synchronized (resource2){
+                try {
+                    System.out.println(getClass().getName()+" obtains the lock of resource2!");
+                    Thread.sleep(500);
+                    synchronized (resource1) {
+                        System.out.println(getClass().getName()+" obtains the lock of resource1!");
+                    }
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                }
+            }
+        }
+    }
+    public static void main(String[] args) {
+        new Thread(new Thread1()).start();
+        new Thread(new Thread2()).start();
+    }
+
+}
+

wine/src/main/java/com/wine/game/wine/common/LogInEnum.java

@@ -28,5 +28,4 @@ public String getInfo(){
         return info;
     }
 
-
 }

wine/src/main/java/com/wine/game/wine/controller/LoginController.java

@@ -7,11 +7,15 @@
 import com.wine.game.wine.security.service.SysLoginService;
 import com.wine.game.wine.security.service.TokenService;
 import com.zenofung.common.utils.R;
+import lombok.extern.log4j.Log4j;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.security.core.userdetails.User;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.*;
 
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Set;
 
 /**
@@ -26,6 +30,7 @@
  */
 @RestController
 @RequestMapping("wine/")
+@Slf4j
 public class LoginController {
 
     @Autowired
@@ -52,6 +57,94 @@ public R getInfo()
         LoginUser loginUser = tokenService.getLoginUser(ServletUtils.getRequest());
         return R.ok().put("user", loginUser);
     }
+    /**
+     * 获取用户信息
+     *
+     * @return 用户信息
+     */
+    @GetMapping("good")
+    public String good()
+    {
+       return "good";
+    }
+
+    @GetMapping("infiniteLoop2")
+    public void infiniteLoop2(){
+        log.info("进入");
+        //死锁
+        try {
+            Thread.sleep(100000000);
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @GetMapping("infiniteLoop3")
+    public void infiniteLoop3(){
+        log.info("进入3");
+        new Thread(()->{
+            try {
+                Thread.sleep(500000);
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+            }
+        });
+    }
+
+    @GetMapping("infiniteLoop")
+    public void infiniteLoop(){
+        log.info("进入");
+        //死锁
+        new Thread(new Thread1()).start();
+        new Thread(new Thread2()).start();
+        //堆溢出
+        // List<byte[]> list = new  ArrayList<byte[]>();
+        // for(int i =0;i<1024000;i++) {
+        //     list.add(new byte[1024*1024]);
+        // }
+      // List list=new ArrayList();
+      // Thread thread=new Thread(new MyThread01());
+      // thread.setName("zeno_Thread");
+      // thread.start();
+      // new Thread(()->{
+
+      // }).start();
+
+    }
+    private static Integer resource1 = 1 ;
+    private static Integer resource2 = 2 ;
+    static class Thread1 implements Runnable{
+        @Override
+        public void run() {
+            synchronized (resource1){
+                try {
+                    System.out.println(getClass().getName()+" obtains the lock of resource1!");
+                    Thread.sleep(500);
+                    synchronized (resource2) {
+                        System.out.println(getClass().getName()+" obtains the lock of resource2!");
+                    }
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                }
+            }
+        }
+    }
+    static class Thread2 implements Runnable{
+        @Override
+        public void run() {
+            synchronized (resource2){
+                try {
+                    System.out.println(getClass().getName()+" obtains the lock of resource2!");
+                    Thread.sleep(500);
+                    synchronized (resource1) {
+                        System.out.println(getClass().getName()+" obtains the lock of resource1!");
+                    }
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                }
+            }
+        }
+    }
 
 
 }

wine/src/main/java/com/wine/game/wine/nettywebsocket/NettyServer.java

@@ -98,8 +98,6 @@ protected void initChannel(SocketChannel ch) throws Exception {
                 ch.pipeline().addLast(new ObjectEncoder());
                 // 以块的方式来写的处理器
                 ch.pipeline().addLast(new ChunkedWriteHandler());
-
-
                 /*
                 说明：
                 1、http数据在传输过程中是分段的，HttpObjectAggregator可以将多个段聚合
@@ -120,8 +118,6 @@ protected void initChannel(SocketChannel ch) throws Exception {
                 ch.pipeline().addLast(binaryWebSocketFrameHandler);
                 // 自定义的handler，处理业务逻辑
                 ch.pipeline().addLast(webSocketHandler);
-
-
             }
         });
         // 配置完成，开始绑定server，通过调用sync同步方法阻塞直到绑定成功
@@ -156,7 +152,5 @@ public void init() {
         }).start();
 
     }
-
-
 
 }

wine/tomcat假死

@@ -0,0 +1,47 @@
+
+
+命令： tail -100f localhost_access_log
+
+通过下面的命令查看实时的日志，执行完下面的查看日志的命令后，而后再次申请下程序，在日志中并没有发现申请记录，阐明tomcat处于一种假死状态，上面接着排查。
+
+
+
+
+网络查看
+CLOSE_WAIT过多情况
+netstat -n | awk '/^tcp/ {++S[$NF]} END {for(a in S) print a, S[a]}'
+
+netstat -an | grep "CLOSE_WAIT"
+
+ss -ant
+
+
+gc 情况查看
+jstat -gcutil 【pid】 1000
+
+
+gc 内存情况
+jmap -heap 进程ID
+jmap -histo 进程ID
+
+
+
+①、应用 jstack 命令导出以后JVM的线程dump快照，而后看看dump中线程都在干什么？
+命令：jstack pid >> jvmThreadDump.log
+
+count=`cat jstack1.log | grep java.lang.Thread.State | wc -l`; wait=`cat jstack1.log | grep WAITING | wc -l`; a=`echo | awk "{print $wait/$count*100}"`; echo "$a%"
+
+
+
+
+一般针对内存泄露，除了开发代码的时候，就进行规范之后，等运行之后，要查看该问题，特别是线上环境的话，最好将完整的JVM堆栈信息给dump下来。这个时候可以使用以下命令：
+
+jmap -dump:file=heap-dump.bin 24118
+
+ 指定为二进制文件
+jmap -dump:format=b,file=heap-dump.bin <14365>
+
+
+
+ tar -czvf li.zip.tar  li
+ tar -cvf archive_name.tar directory_to_compress