add a flag to pause polling for serial port

arduino-core/src/cc/arduino/packages/discoverers/SerialDiscovery.java

@@ -75,13 +75,15 @@ public class SerialDiscovery implements Discovery {
   }
 
   public void forceRefresh() {
-    serialBoardsLister.retriggerDiscovery();
+    serialBoardsLister.retriggerDiscovery(false);
   }
 
   public void setUploadInProgress(boolean param) {
     serialBoardsLister.uploadInProgress = param;
   }
 
+  public void pausePolling(boolean param) { serialBoardsLister.pausePolling = param;}
+
   @Override
   public void start() {
     this.serialBoardsListerTimer = new Timer(SerialBoardsLister.class.getName());

arduino-core/src/cc/arduino/packages/discoverers/serial/SerialBoardsLister.java

@@ -44,6 +44,7 @@ public class SerialBoardsLister extends TimerTask {
   private final List<BoardPort> boardPorts = new LinkedList<>();
   private List<String> oldPorts = new LinkedList<>();
   public boolean uploadInProgress = false;
+  public boolean pausePolling = false;
   private BoardPort oldUploadBoardPort = null;
 
   public SerialBoardsLister(SerialDiscovery serialDiscovery) {
@@ -54,7 +55,7 @@ public class SerialBoardsLister extends TimerTask {
     timer.schedule(this, 0, 1000);
   }
 
-  public synchronized void retriggerDiscovery() {
+  public synchronized void retriggerDiscovery(boolean polled) {
     while (BaseNoGui.packages == null) {
       try {
         Thread.sleep(1000);
@@ -67,6 +68,10 @@ public class SerialBoardsLister extends TimerTask {
       return;
     }
 
+    if (polled && pausePolling) {
+      return;
+    }
+
     List<String> ports = platform.listSerials();
     if (ports.equals(oldPorts)) {
       return;
@@ -163,6 +168,6 @@ public class SerialBoardsLister extends TimerTask {
 
   @Override
   public void run() {
-     retriggerDiscovery();
+     retriggerDiscovery(true);
   }
 }

arduino-core/src/cc/arduino/packages/uploaders/SerialUploader.java

@@ -91,6 +91,8 @@ public class SerialUploader extends Uploader {
       return uploadUsingProgrammer(buildPath, className);
     }
 
+    BaseNoGui.getDiscoveryManager().getSerialDiscoverer().pausePolling(true);
+
     if (noUploadPort)
     {
       prefs.put("build.path", buildPath);
@@ -107,6 +109,8 @@ public class SerialUploader extends Uploader {
         uploadResult = executeUploadCommand(cmd);
       } catch (Exception e) {
         throw new RunnerException(e);
+      } finally {
+        BaseNoGui.getDiscoveryManager().getSerialDiscoverer().pausePolling(false);
       }
       return uploadResult;
     }
@@ -148,6 +152,8 @@ public class SerialUploader extends Uploader {
         throw new RunnerException(e);
       } catch (InterruptedException e) {
         throw new RunnerException(e.getMessage());
+      } finally {
+        BaseNoGui.getDiscoveryManager().getSerialDiscoverer().pausePolling(false);
       }
       if (actualUploadPort == null) {
         actualUploadPort = userSelectedUploadPort;
@@ -183,9 +189,12 @@ public class SerialUploader extends Uploader {
       throw e;
     } catch (Exception e) {
       throw new RunnerException(e);
+    } finally {
+      BaseNoGui.getDiscoveryManager().getSerialDiscoverer().pausePolling(false);
     }
 
     BaseNoGui.getDiscoveryManager().getSerialDiscoverer().setUploadInProgress(false);
+    BaseNoGui.getDiscoveryManager().getSerialDiscoverer().pausePolling(false);
 
     String finalUploadPort = null;
     if (uploadResult && doTouch) {