From dc45946163d5c472147b52a36e8d325913f904e0 Mon Sep 17 00:00:00 2001
From: Andrew Ardill <andrew.ardill@gmail.com>
Date: Mon, 14 Feb 2011 15:29:52 +1100
Subject: implementation of isCurrentlyRunning(int taskId); Burrows down to the
 worker thread assigned to this task, and returns its alive status. If no such
 thread exists, then the task is not running!

---
 .../bukkit/craftbukkit/scheduler/CraftScheduler.java    |  5 ++++-
 .../org/bukkit/craftbukkit/scheduler/CraftTask.java     |  2 +-
 .../craftbukkit/scheduler/CraftThreadManager.java       | 17 +++++++++++++++--
 .../org/bukkit/craftbukkit/scheduler/CraftWorker.java   |  4 ++++
 4 files changed, 24 insertions(+), 4 deletions(-)

(limited to 'src')

diff --git a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
index 46e095bc..298c9724 100644
--- a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
+++ b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
@@ -210,7 +210,7 @@ public class CraftScheduler implements BukkitScheduler, Runnable {
                 }
             }
         }
-        craftThreadManager.interruptTask(plugin);
+        craftThreadManager.interruptTasks(plugin);
     }
 
     public void cancelAllTasks() {
@@ -220,4 +220,7 @@ public class CraftScheduler implements BukkitScheduler, Runnable {
         craftThreadManager.interruptAllTasks();
     }
 
+    public boolean isCurrentlyRunning(int taskId){
+        return craftThreadManager.isAlive(taskId);
+    }
 }
diff --git a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftTask.java b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftTask.java
index 80a1e785..7d5b610e 100644
--- a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftTask.java
+++ b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftTask.java
@@ -4,7 +4,7 @@ import java.lang.Comparable;
 
 import org.bukkit.plugin.Plugin;
 
-public class CraftTask implements Comparable {
+public class CraftTask implements Comparable<Object> {
 
     private final Runnable task;
     private final boolean syncTask;
diff --git a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftThreadManager.java b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftThreadManager.java
index 8ded4984..d63b458e 100644
--- a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftThreadManager.java
+++ b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftThreadManager.java
@@ -1,7 +1,6 @@
 package org.bukkit.craftbukkit.scheduler;
 
 import java.util.HashSet;
-import java.util.LinkedList;
 import java.util.Iterator;
 
 import org.bukkit.plugin.Plugin;
@@ -31,7 +30,7 @@ public class CraftThreadManager {
         }
     }
 
-    void interruptTask(Plugin owner) {
+    void interruptTasks(Plugin owner) {
         synchronized (workers) {
             Iterator<CraftWorker> itr = workers.iterator();
             while (itr.hasNext()) {
@@ -52,4 +51,18 @@ public class CraftThreadManager {
             }
         }
     }
+
+    boolean isAlive(int taskId) {
+        synchronized (workers) {
+            Iterator<CraftWorker> itr = workers.iterator();
+            while (itr.hasNext()) {
+                CraftWorker craftWorker = itr.next();
+                if (craftWorker.getTaskId() == taskId) {
+                    return craftWorker.isAlive();
+                }
+            }
+        }
+        // didn't find it, so it must have been removed
+        return false;
+    }
 }
diff --git a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftWorker.java b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftWorker.java
index 2bb9400d..3bf91e4f 100644
--- a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftWorker.java
+++ b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftWorker.java
@@ -53,6 +53,10 @@ public class CraftWorker implements Runnable {
         t.interrupt();
     }
 
+    public boolean isAlive() {
+        return t.isAlive();
+    }
+
     private static int getNextHashId() {
         synchronized (hashIdCounterSync) {
             return hashIdCounter++;
-- 
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