sharpener-YuFeng
diff --git a/‎docs/java/basis/unsafe.md‎
Lines changed: 6 additions & 4 deletions b/‎docs/java/basis/unsafe.md‎
Lines changed: 6 additions & 4 deletions
@@ -568,10 +568,12 @@ private void incrementAndPrint(int targetValue) {
             return;
         }
         // 尝试 CAS 操作：如果当前值等于 targetValue - 1，则原子地设置为 targetValue
-        if (unsafe.compareAndSwapInt(this, fieldOffset, currentValue, targetValue)) {
-            // CAS 成功后立即打印，确保打印的就是本次设置的值
-            System.out.print(targetValue + " ");
-            return;
+        if (currentValue == targetValue - 1) {
+          if (unsafe.compareAndSwapInt(this, fieldOffset, currentValue, targetValue)) {
+              // CAS 成功后立即打印，确保打印的就是本次设置的值
+              System.out.print(targetValue + " ");
+              return;
+          }
         }
         // CAS 失败，重新读取并重试
     }
Original file line number	Diff line number	Diff line change
@@ -568,10 +568,12 @@ private void incrementAndPrint(int targetValue) {
568	568	return;
569	569	}
570	570	// 尝试 CAS 操作：如果当前值等于 targetValue - 1，则原子地设置为 targetValue
571		- if (unsafe.compareAndSwapInt(this, fieldOffset, currentValue, targetValue)) {
572		- // CAS 成功后立即打印，确保打印的就是本次设置的值
573		- System.out.print(targetValue + " ");
574		- return;
	571	+ if (currentValue == targetValue - 1) {
	572	+ if (unsafe.compareAndSwapInt(this, fieldOffset, currentValue, targetValue)) {
	573	+ // CAS 成功后立即打印，确保打印的就是本次设置的值
	574	+ System.out.print(targetValue + " ");
	575	+ return;
	576	+ }
575	577	}
576	578	// CAS 失败，重新读取并重试
577	579	}