From 20b80cc6a05520303c500c4d6cd52361fa9e94c2 Mon Sep 17 00:00:00 2001
From: Jesse Glick <jglick@cloudbees.com>
Date: Fri, 24 May 2013 16:38:45 -0400
Subject: [PATCH] Display classLoadingPrefetchCacheCount.

---
 .../main/java/hudson/slaves/SlaveComputer.java | 18 ++++++++++++++++++
 .../slaves/SlaveComputer/statistics.groovy     | 10 +++++++++-
 pom.xml                                        |  2 +-
 3 files changed, 28 insertions(+), 2 deletions(-)

diff --git a/core/src/main/java/hudson/slaves/SlaveComputer.java b/core/src/main/java/hudson/slaves/SlaveComputer.java
index cdffb6d5f7..97a2578f44 100644
--- a/core/src/main/java/hudson/slaves/SlaveComputer.java
+++ b/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) {
diff --git a/core/src/main/resources/hudson/slaves/SlaveComputer/statistics.groovy b/core/src/main/resources/hudson/slaves/SlaveComputer/statistics.groovy
index f0b62d524e..6a801364f9 100644
--- a/core/src/main/resources/hudson/slaves/SlaveComputer/statistics.groovy
+++ b/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')
diff --git a/pom.xml b/pom.xml
index 45a72f733f..88c02655e1 100644
--- a/pom.xml
+++ b/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>
-- 
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