From 1b32e6982a5c1b835966fe32fca480a787d6c217 Mon Sep 17 00:00:00 2001
From: Your Name <you@example.com>
Date: Mon, 8 Jul 2024 21:07:58 +0800
Subject: [PATCH] sync.mutex start

---
 .idea/vcs.xml |  1 +
 sync/mutex.go | 29 +++++++++++++++++++++++++++++
 2 files changed, 30 insertions(+)
 create mode 100644 sync/mutex.go

diff --git a/.idea/vcs.xml b/.idea/vcs.xml
index 94a25f7..a9aa77a 100644
--- a/.idea/vcs.xml
+++ b/.idea/vcs.xml
@@ -2,5 +2,6 @@
 <project version="4">
   <component name="VcsDirectoryMappings">
     <mapping directory="$PROJECT_DIR$" vcs="Git" />
+    <mapping directory="$PROJECT_DIR$/logging" vcs="Git" />
   </component>
 </project>
\ No newline at end of file
diff --git a/sync/mutex.go b/sync/mutex.go
new file mode 100644
index 0000000..a5c2295
--- /dev/null
+++ b/sync/mutex.go
@@ -0,0 +1,29 @@
+package main
+
+import (
+	"fmt"
+	"sync"
+)
+
+// 互斥锁
+var x = 0
+
+var wg sync.WaitGroup
+var lock sync.Mutex
+
+func add() {
+	for i := 0; i < 5000; i++ {
+		lock.Lock()
+		x = x + 1
+		lock.Unlock()
+	}
+	wg.Done()
+}
+
+func main() {
+	wg.Add(2)
+	go add()
+	go add()
+	wg.Wait()
+	fmt.Println(x)
+}