8229899: Make java.io.File.isInvalid() less racy

Reviewed-by: alanb, martin, shade

8229899: Make java.io.File.isInvalid() less racy
Reviewed-by: alanb, martin, shade
54b26037 · aeubanks · c03f0ca7 · 54b26037
隐藏空白更改
内联并排

Showing with 6 addition and 4 deletion

src/share/classes/java/io/File.java src/share/classes/java/io/File.java +6 -4

未找到文件。
--- a/src/share/classes/java/io/File.java
+++ b/src/share/classes/java/io/File.java
@@ -183,11 +183,13 @@ public class File
     * @return true if the file path is invalid.
     */
    final boolean isInvalid() {
-        if (status == null) {
-            status = (this.path.indexOf('\u0000') < 0) ? PathStatus.CHECKED
-                                                       : PathStatus.INVALID;
+        PathStatus s = status;
+        if (s == null) {
+            s = (this.path.indexOf('\u0000') < 0) ? PathStatus.CHECKED
+                                                  : PathStatus.INVALID;
+            status = s;
        }
-        return status == PathStatus.INVALID;
+        return s == PathStatus.INVALID;
    }

    /**