FsCrawler - cache currentThread

http://www.jutils.com/checks/performance.html
d-kozak · Jan 14, 2020 · 78124ef · 78124ef
1 parent 5d4376e
commit 78124ef
Showing 1 changed file with 7 additions and 1 deletion.
diff --git a/scanner/src/main/kotlin/io/dkozak/profiler/scanner/FsCrawler.kt b/scanner/src/main/kotlin/io/dkozak/profiler/scanner/FsCrawler.kt
@@ -32,6 +32,11 @@ internal class FsCrawler(
      */
     var directoryCount = 0
 
+    /**
+     * current thread reference, it is expensive to ask about it every time
+     */
+    private val currentThread: Thread = Thread.currentThread()
+
     /**
      * Crawl the fs tree starting from the diskRoot
      * @return fs tree
@@ -47,14 +52,15 @@ internal class FsCrawler(
         }
     }
 
+
     /**
      * Crawl the fs tree starting from given file
      * @param file to be crawled
      * @param currentDepth depth of depth-first search
      */
     @Precondition("currentFile.exists")
     fun recursiveScan(currentFile: File, currentDepth: Int = 0): TreeItem<FsNode> {
-        if (Thread.currentThread().isInterrupted) {
+        if (currentThread.isInterrupted) {
             logger.info { "Cancelation detected" }
             throw InterruptedException()
         }