Display classLoadingPrefetchCacheCount.

core/src/main/java/hudson/slaves/SlaveComputer.java

@@ -348,6 +348,18 @@ public class SlaveComputer extends Computer {
         return channel.call(new LoadingCount(false));
     }
 
+    /**
+     * Shows {@link Channel#classLoadingPrefetchCacheCount}.
+     * @return -1 in case that capability is not supported
+     * @since XXX prefetch-JENKINS-15120
+     */
+    public int getClassLoadingPrefetchCacheCount() throws IOException, InterruptedException {
+        if (!channel.remoteCapability.supportsPrefetch()) {
+            return -1;
+        }
+        return channel.call(new LoadingPrefetchCacheCount());
+    }
+
     /**
      * Shows {@link Channel#resourceLoadingCount}.
      * @since 1.495
@@ -383,6 +395,12 @@ public class SlaveComputer extends Computer {
         }
     }
 
+    static class LoadingPrefetchCacheCount implements Callable<Integer,RuntimeException> {
+        @Override public Integer call() {
+            return Channel.current().classLoadingPrefetchCacheCount.get();
+        }
+    }
+
     static class LoadingTime implements Callable<Long,RuntimeException> {
         private final boolean resource;
         LoadingTime(boolean resource) {

core/src/main/resources/hudson/slaves/SlaveComputer/statistics.groovy

@@ -10,7 +10,15 @@ table(class: 'bigtable') {
     tr {
         td _('Classes')
         td(style: right) {text(fmt.format(my.classLoadingTime / 1000000000))}
-        td(style: right) {text(my.classLoadingCount)}
+        td(style: right) {
+            text(my.classLoadingCount)
+            def classLoadingPrefetchCacheCount = my.classLoadingPrefetchCacheCount;
+            if (classLoadingPrefetchCacheCount != -1) {
+                text(_(' (prefetch cache: '))
+                text(classLoadingPrefetchCacheCount)
+                text(_(')'))
+            }
+        }
     }
     tr {
         td _('Resources')

pom.xml

@@ -175,7 +175,7 @@ THE SOFTWARE.
       <dependency>
         <groupId>org.jenkins-ci.main</groupId>
         <artifactId>remoting</artifactId>
-        <version>2.23</version>
+        <version>2.24-SNAPSHOT</version>
       </dependency>
 
       <dependency>