# HG changeset patch
# Parent  b524acd3f9e76bcefc01d8df203b3ea62101a3e1

diff -r b524acd3f9e7 src/java.base/share/classes/java/util/zip/ZipFile.java
--- a/src/java.base/share/classes/java/util/zip/ZipFile.java	Wed Apr 22 18:50:58 2020 +0200
+++ b/src/java.base/share/classes/java/util/zip/ZipFile.java	Wed Apr 22 20:02:48 2020 +0200
@@ -336,6 +336,7 @@
     private ZipEntry getEntry(String name, Function<String, ? extends ZipEntry> func) {
         Objects.requireNonNull(name, "name");
         ZipEntry entry = null;
+        long before = System.nanoTime();
         synchronized (this) {
             ensureOpen();
             byte[] bname = zc.getBytes(name);
@@ -352,6 +353,11 @@
                 }
             }
         }
+        if (entry == null) {
+            PerfCounter.getZipFileMisses().addElapsedTimeFrom(before);
+        } else {
+            PerfCounter.getZipFileHits().addElapsedTimeFrom(before);
+        }
         return entry;
     }
 
diff -r b524acd3f9e7 src/java.base/share/classes/jdk/internal/perf/PerfCounter.java
--- a/src/java.base/share/classes/jdk/internal/perf/PerfCounter.java	Wed Apr 22 18:50:58 2020 +0200
+++ b/src/java.base/share/classes/jdk/internal/perf/PerfCounter.java	Wed Apr 22 20:02:48 2020 +0200
@@ -131,6 +131,8 @@
         static final PerfCounter rcbt  = newPerfCounter("sun.urlClassLoader.readClassBytesTime");
         static final PerfCounter zfc   = newPerfCounter("sun.zip.zipFiles");
         static final PerfCounter zfot  = newPerfCounter("sun.zip.zipFile.openTime");
+        static final PerfCounter zfh  = newPerfCounter("sun.zip.zipFile.hits");
+        static final PerfCounter zfm  = newPerfCounter("sun.zip.zipFile.misses");
     }
 
     /**
@@ -178,4 +180,11 @@
         return CoreCounters.zfot;
     }
 
+    public static PerfCounter getZipFileHits() {
+        return CoreCounters.zfh;
+    }
+    public static PerfCounter getZipFileMisses() {
+        return CoreCounters.zfm;
+    }
+
 }