X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fviewmodel%2FAlignmentViewport.java;h=0e3bb9e923077371053715aa0e677adfa0914453;hb=bea1d9b563d2fea018de3dbde9112dd59149126e;hp=5ad956f6452382f8a7b0537f47d235949e0982cd;hpb=49db0dff1da16c3355b43a41498c1fc93ef47e91;p=jalview.git

diff --git a/src/jalview/viewmodel/AlignmentViewport.java b/src/jalview/viewmodel/AlignmentViewport.java
index 5ad956f..0e3bb9e 100644
--- a/src/jalview/viewmodel/AlignmentViewport.java
+++ b/src/jalview/viewmodel/AlignmentViewport.java
@@ -74,6 +74,9 @@ import java.util.Hashtable;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.ScheduledThreadPoolExecutor;
 
 /**
  * base class holding visualization and analysis attributes and common logic for
@@ -995,6 +998,20 @@ public abstract class AlignmentViewport
     return false;
   }
 
+  private ScheduledExecutorService serviceExecutor = Executors.newSingleThreadScheduledExecutor();
+
+  /**
+   * Get a default scheduled executor service which can be used by
+   * services and calculators to run parallel jobs associated with this
+   * viewport.
+   * 
+   * @return default service executor of that viewport
+   */
+  public ScheduledExecutorService getServiceExecutor()
+  {
+    return serviceExecutor;
+  }
+
   public void setAlignment(AlignmentI align)
   {
     this.alignment = align;
@@ -1024,11 +1041,14 @@ public abstract class AlignmentViewport
     gapcounts = null;
     calculator.shutdown();
     calculator = null;
+    serviceExecutor.shutdown();
+    serviceExecutor = null;
     residueShading = null; // may hold a reference to Consensus
     changeSupport = null;
     ranges = null;
     currentTree = null;
     selectionGroup = null;
+    colSel = null;
     setAlignment(null);
   }