1 files changed, 99 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/taskdefs/Nice.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/taskdefs/Nice.java
new file mode 100644
index 00000000..5898caee
--- /dev/null
+++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/taskdefs/Nice.java
@@ -0,0 +1,99 @@
+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one or more
+ *  contributor license agreements.  See the NOTICE file distributed with
+ *  this work for additional information regarding copyright ownership.
+ *  The ASF licenses this file to You under the Apache License, Version 2.0
+ *  (the "License"); you may not use this file except in compliance with
+ *  the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ */
+
+package org.apache.tools.ant.taskdefs;
+
+import org.apache.tools.ant.BuildException;
+import org.apache.tools.ant.Project;
+import org.apache.tools.ant.Task;
+
+/**
+ * A task to provide "nice-ness" to the current thread, and/or to
+ * query the current value.
+ * Examples:
+ * <pre> &lt;nice currentPriority="current.value" &gt;</pre><p>
+ * Set <code>currentPriority</code> to the current priority
+ * <pre> &lt;nice newPriority="10" &gt;</pre><p>
+ * Raise the priority of the build process (But not forked programs)
+ * <pre> &lt;nice currentPriority="old" newPriority="3" &gt;</pre><p>
+ * Lower the priority of the build process (But not forked programs), and save
+ * the old value to the property <code>old</code>.
+ *
+ * @ant.task name="nice" category="control"
+ */
+public class Nice extends Task {
+
+    /**
+     * the new priority
+     */
+    private Integer newPriority;
+
+    /**
+     * the current priority
+     */
+    private String currentPriority;
+
+
+
+    /**
+     * Execute the task
+     * @exception BuildException if something goes wrong with the build
+     */
+    public void execute() throws BuildException {
+
+        Thread self = Thread.currentThread();
+        int priority = self.getPriority();
+        if (currentPriority != null) {
+            String current = Integer.toString(priority);
+            getProject().setNewProperty(currentPriority, current);
+        }
+        //if there is a new priority, and it is different, change it
+        if (newPriority != null && priority != newPriority.intValue()) {
+            try {
+                self.setPriority(newPriority.intValue());
+            } catch (SecurityException e) {
+                //catch permissions denial and keep going
+                log("Unable to set new priority -a security manager is in the way",
+                        Project.MSG_WARN);
+            } catch (IllegalArgumentException iae) {
+                throw new BuildException("Priority out of range", iae);
+            }
+        }
+    }
+
+    /**
+     * The name of a property to set to the value of the current
+     * thread priority. Optional
+     * @param currentPriority the property name.
+     */
+    public void setCurrentPriority(String currentPriority) {
+        this.currentPriority = currentPriority;
+    }
+
+    /**
+     * the new priority, in the range 1-10.
+     * @param newPriority the new priority value.
+     */
+    public void setNewPriority(int newPriority) {
+        if (newPriority < Thread.MIN_PRIORITY || newPriority > Thread.MAX_PRIORITY) {
+            throw new BuildException("The thread priority is out of the range 1-10");
+        }
+        this.newPriority = new Integer(newPriority);
+    }
+
+}