Enabled concurrent build support for matrix projects

changelog.html

@@ -57,6 +57,8 @@ Upcoming changes</a>
 <ul class=image>
   <li class=rfe>
     Exposed plugin manager and update center to the REST API
+  <li class=rfe>
+    Enabled concurrent build support for matrix projects
 </ul>
 </div><!--=TRUNK-END=-->
 

core/src/main/java/hudson/matrix/MatrixConfiguration.java

@@ -78,6 +78,16 @@ public class MatrixConfiguration extends Project<MatrixConfiguration,MatrixRun>
         super.onLoad(parent, combination.toString());
     }
 
+    @Override
+    public boolean isConcurrentBuild() {
+        return getParent().isConcurrentBuild();
+    }
+
+    @Override
+    public void setConcurrentBuild(boolean b) throws IOException {
+        throw new UnsupportedOperationException("The setting can be only changed at MatrixProject");
+    }
+
     /**
      * Used during loading to set the combination back.
      */

core/src/main/java/hudson/model/AbstractProject.java

@@ -299,7 +299,7 @@ public abstract class AbstractProject<P extends AbstractProject<P,R>,R extends A
      */
     @Exported
     public boolean isConcurrentBuild() {
-        return Jenkins.CONCURRENT_BUILD && concurrentBuild;
+        return concurrentBuild;
     }
 
     public void setConcurrentBuild(boolean b) throws IOException {

core/src/main/java/jenkins/model/Jenkins.java

@@ -213,6 +213,8 @@ import org.jvnet.hudson.reactor.TaskBuilder;
 import org.jvnet.hudson.reactor.TaskGraphBuilder;
 import org.jvnet.hudson.reactor.Reactor;
 import org.jvnet.hudson.reactor.TaskGraphBuilder.Handle;
+import org.kohsuke.accmod.Restricted;
+import org.kohsuke.accmod.restrictions.NoExternalUse;
 import org.kohsuke.args4j.Argument;
 import org.kohsuke.args4j.Option;
 import org.kohsuke.stapler.Ancestor;
@@ -3802,7 +3804,10 @@ public class Jenkins extends AbstractCIBase implements ModifiableItemGroup<TopLe
      * When we merge this back to the trunk, this allows us to keep
      * this feature hidden for a while until we iron out the kinks.
      * @see AbstractProject#isConcurrentBuild()
+     * @deprecated as of 1.464
+     *      This flag will have no effect.
      */
+    @Restricted(NoExternalUse.class)
     public static boolean CONCURRENT_BUILD = true;
 
     /**

core/src/main/resources/hudson/matrix/MatrixProject/configure-entries.jelly

@@ -30,6 +30,7 @@ THE SOFTWARE.
 <j:jelly xmlns:j="jelly:core" xmlns:st="jelly:stapler" xmlns:d="jelly:define" xmlns:l="/lib/layout" xmlns:t="/lib/hudson" xmlns:f="/lib/form" xmlns:i="jelly:fmt" xmlns:p="/lib/hudson/project">
 
   <p:config-disableBuild/>
+  <p:config-concurrentBuild />
 
   <f:section title="${%Advanced Project Options}">
     <f:advanced>

core/src/main/resources/hudson/model/AbstractItem/configure-common.jelly

@@ -29,9 +29,7 @@ THE SOFTWARE.
 <?jelly escape-by-default='true'?>
 <j:jelly xmlns:j="jelly:core" xmlns:st="jelly:stapler" xmlns:d="jelly:define" xmlns:l="/lib/layout" xmlns:t="/lib/hudson" xmlns:f="/lib/form" xmlns:p="/lib/hudson/project" xmlns:this="this">
   <p:config-disableBuild/>
-  <j:if test="${app.CONCURRENT_BUILD}">
-    <f:optionalBlock field="concurrentBuild" title="${%title.concurrentbuilds}" />
-  </j:if>
+  <p:config-concurrentBuild />
 
   <j:set var="jdks" value="${app.JDKs}" />
   <j:if test="${jdks.size() gt 1}">

core/src/main/resources/hudson/model/AbstractItem/configure-common.properties

@@ -22,5 +22,4 @@
 
 default.value=(Default)
 Advanced\ Project\ Options\ configure-common=Advanced Project Options
-title.concurrentbuilds=Execute concurrent builds if necessary
 Display\ Name=Display Name

core/src/main/resources/hudson/model/AbstractItem/configure-common_da.properties

@@ -23,6 +23,5 @@
 Label\ Expression=Etiketudtryk
 default.value=(Standard)
 Restrict\ where\ this\ project\ can\ be\ run=Begr\u00e6ns hvor dette projekt kan k\u00f8res
-title.concurrentbuilds=K\u00f8r parallelle byg om n\u00f8dvendigt
 Advanced\ Project\ Options\ configure-common=Avancerede projektindstillinger
 JDK\ to\ be\ used\ for\ this\ project=JDK der skal benyttes til dette projekt

core/src/main/resources/hudson/model/AbstractItem/configure-common_de.properties

@@ -23,6 +23,5 @@
 JDK\ to\ be\ used\ for\ this\ project=JDK, das für dieses Projekt verwendet wird
 default.value=(Vorgabewert)
 Advanced\ Project\ Options\ configure-common=Erweiterte Projekteinstellungen
-title.concurrentbuilds=Parallele Builds ausführen, wenn notwendig
 Restrict\ where\ this\ project\ can\ be\ run=Beschränke wo dieses Projekt ausgeführt werden darf
 Label\ Expression=Label-Ausdruck

core/src/main/resources/hudson/model/AbstractItem/configure-common_es.properties

@@ -22,7 +22,6 @@
 
 default.value=(por defecto)
 Advanced\ Project\ Options\ configure-common=Opciones avanzadas del proyecto
-title.concurrentbuilds=Lanzar ejecuciones concurrentes en caso de ser necesario
 JDK\ to\ be\ used\ for\ this\ project=JDK que se debe usar para este proyecto
 Label\ Expression=Expresión
 Restrict\ where\ this\ project\ can\ be\ run=Restringir dónde se puede ejecutar este proyecto.

core/src/main/resources/hudson/model/AbstractItem/configure-common_fr.properties

@@ -26,4 +26,3 @@ Node=Noeud
 Execute\ concurrent\ builds\ if\ necessary\ =Ex\u00E9cuter les builds en parall\u00E8le si n\u00E9cessaire
 JDK\ to\ be\ used\ for\ this\ project=Le JDK à utiliser pour ce projet
 default.value=(Valeur par défaut)
-title.concurrentbuilds=Ex\u00E9cuter des builds simultan\u00E9ment si n\u00E9cessaire

core/src/main/resources/hudson/model/AbstractItem/configure-common_it.properties

@@ -21,4 +21,3 @@
 # THE SOFTWARE.
 
 Advanced\ Project\ Options\ configure-common=Opzioni avanzate del progetto
-title.concurrentbuilds=Esegui build in concorrenza se necessario (beta)

core/src/main/resources/hudson/model/AbstractItem/configure-common_ja.properties

@@ -23,7 +23,6 @@
 JDK\ to\ be\ used\ for\ this\ project=\u3053\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u4f7f\u7528\u3059\u308bJDK
 Advanced\ Project\ Options\ configure-common=\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u9ad8\u5ea6\u306a\u30aa\u30d7\u30b7\u30e7\u30f3
 default.value=\u30c7\u30d5\u30a9\u30eb\u30c8
-title.concurrentbuilds=\u53ef\u80fd\u3067\u3042\u308c\u3070\u4e26\u884c\u3057\u3066\u30d3\u30eb\u30c9
 Restrict\ where\ this\ project\ can\ be\ run=\u5b9f\u884c\u3059\u308b\u30ce\u30fc\u30c9\u3092\u5236\u9650
 Label\ Expression=\u30e9\u30d9\u30eb\u5f0f
 Display\ Name=\u8868\u793a\u7528\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u540d

core/src/main/resources/hudson/model/AbstractItem/configure-common_pt_BR.properties

@@ -24,7 +24,5 @@ Advanced\ Project\ Options\ configure-common=Op\u00e7\u00f5es Avan\u00e7adas do
 # (Default)
 default.value=Default
 Node=N\u00f3
-# Execute concurrent builds if necessary (beta)
-title.concurrentbuilds=Execute as construcoes se necessario
 Tie\ this\ project\ to\ a\ node=Vincular esse projeto a um N\u00f3
 JDK\ to\ be\ used\ for\ this\ project=Necess\u00e1rio usar JDK nesse projeto

core/src/main/resources/hudson/model/AbstractItem/configure-common_zh_CN.properties

@@ -21,4 +21,3 @@
 # THE SOFTWARE.
 
 Advanced\ Project\ Options\ configure-common=\u9AD8\u7EA7\u9879\u76EE\u9009\u9879
-title.concurrentbuilds=\u5728\u5FC5\u8981\u7684\u65F6\u5019\u5E76\u53D1\u6784\u5EFA

core/src/main/resources/lib/hudson/project/config-concurrentBuild.jelly

+<!--
+The MIT License
+
+Copyright (c) 2012, CloudBees, Inc.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+-->
+
+<!--
+  Configuration entry for concurrent build
+-->
+<?jelly escape-by-default='true'?>
+<j:jelly xmlns:j="jelly:core" xmlns:st="jelly:stapler" xmlns:d="jelly:define" xmlns:l="/lib/layout" xmlns:t="/lib/hudson" xmlns:f="/lib/form">
+  <f:optionalBlock field="concurrentBuild" title="${%title.concurrentbuilds}" />
+</j:jelly>
\ No newline at end of file

core/src/main/resources/lib/hudson/project/config-concurrentBuild.properties

+# the mit license
+# 
+# copyright (c) 2004-2012, sun microsystems, inc., kohsuke kawaguchi, eric lefevre-ardant
+# 
+# permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "software"), to deal
+# in the software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
+title.concurrentbuilds=Execute concurrent builds if necessary

core/src/main/resources/lib/hudson/project/config-concurrentBuild_da.properties

+# The MIT License
+#
+# Copyright (c) 2004-2010, Sun Microsystems, Inc. Kohsuke Kawaguchi. Knud Poulsen.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
+title.concurrentbuilds=K\u00f8r parallelle byg om n\u00f8dvendigt

core/src/main/resources/lib/hudson/project/config-concurrentBuild_de.properties

+# The MIT License
+# 
+# Copyright (c) 2004-2009, Sun Microsystems, Inc., Kohsuke Kawaguchi, Simon Wiest
+# 
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
+title.concurrentbuilds=Parallele Builds ausf?hren, wenn notwendig

core/src/main/resources/lib/hudson/project/config-concurrentBuild_es.properties

+# The MIT License
+# 
+# Copyright (c) 2004-2009, Sun Microsystems, Inc., Kohsuke Kawaguchi, Eric Lefevre-Ardant
+# 
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
+title.concurrentbuilds=Lanzar ejecuciones concurrentes en caso de ser necesario

core/src/main/resources/lib/hudson/project/config-concurrentBuild_fr.properties

+# The MIT License
+# 
+# Copyright (c) 2004-2009, Sun Microsystems, Inc., Kohsuke Kawaguchi, Eric Lefevre-Ardant
+# 
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
+title.concurrentbuilds=Ex\u00E9cuter des builds simultan\u00E9ment si n\u00E9cessaire

core/src/main/resources/lib/hudson/project/config-concurrentBuild_it.properties

+# The MIT License
+#
+# Copyright (c) 2004-2010, Sun Microsystems, Inc.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
+title.concurrentbuilds=Esegui build in concorrenza se necessario (beta)

core/src/main/resources/lib/hudson/project/config-concurrentBuild_pt_BR.properties

+# The MIT License
+# 
+# Copyright (c) 2004-2009, Sun Microsystems, Inc., Kohsuke Kawaguchi, Reginaldo L. Russinholi, Cleiber Silva
+# 
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
+title.concurrentbuilds=Execute as construcoes se necessario

core/src/main/resources/lib/hudson/project/config-concurrentBuild_zh_CN.properties

+# The MIT License
+#
+# Copyright (c) 2004-2010, Sun Microsystems, Inc.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
+title.concurrentbuilds=\u5728\u5FC5\u8981\u7684\u65F6\u5019\u5E76\u53D1\u6784\u5EFA

pom.xml

@@ -189,7 +189,7 @@ THE SOFTWARE.
       <dependency>
         <groupId>org.jenkins-ci.main</groupId>
         <artifactId>remoting</artifactId>
-        <version>2.14</version>
+        <version>2.13</version>
       </dependency>
 
       <dependency>

test/src/test/groovy/hudson/matrix/MatrixProjectTest.groovy

@@ -53,6 +53,9 @@ import hudson.model.FileParameterDefinition
 import hudson.model.Cause.LegacyCodeCause
 import hudson.model.ParametersAction
 import hudson.model.FileParameterValue
+import org.jvnet.hudson.test.MockBuilder
+import org.jvnet.hudson.test.SleepBuilder
+import java.util.concurrent.CountDownLatch
 
 /**
  *
@@ -327,4 +330,41 @@ public class MatrixProjectTest extends HudsonTestCase {
         
         assertBuildStatusSuccess(f.get(10,TimeUnit.SECONDS));
     }
+
+    /**
+     * Verifies that the concurrent build feature works, and makes sure
+     * that each gets its own unique workspace.
+     */
+    void testConcurrentBuild() {
+        jenkins.numExecutors = 10
+        jenkins.updateComputerList()
+
+        def p = createMatrixProject()
+        p.axes = new AxisList(new TextAxis("foo","1","2"))
+        p.concurrentBuild = true;
+        def latch = new CountDownLatch(4)
+        def dirs = Collections.synchronizedSet(new HashSet())
+        
+        p.buildersList.add(new TestBuilder() {
+            boolean perform(AbstractBuild<?, ?> build, Launcher launcher, BuildListener listener) {
+                dirs << build.workspace.getRemote()
+                def marker = build.workspace.child("file")
+                def name = build.fullDisplayName
+                marker.write(name,"UTF-8")
+                latch.countDown()
+                latch.await()
+                assertEquals(name,marker.readToString())
+                return true
+            }
+        })
+
+        // should have gotten all unique names
+        def f1 = p.scheduleBuild2(0)
+        // get one going
+        Thread.sleep(1000)
+        def f2 = p.scheduleBuild2(0)
+        [f1,f2]*.get().each{ assertBuildStatusSuccess(it)}
+
+        assertEquals 4, dirs.size()
+    }
 }