diff options
| -rw-r--r-- | altoslib/AltosLink.java | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/altoslib/AltosLink.java b/altoslib/AltosLink.java index 62bd82b9..c0031cad 100644 --- a/altoslib/AltosLink.java +++ b/altoslib/AltosLink.java @@ -55,8 +55,11 @@ public abstract class AltosLink implements Runnable { public void printf(String format, Object ... arguments) { String line = String.format(format, arguments); - if (debug) - pending_output.add(line); + if (debug) { + synchronized (pending_output) { + pending_output.add(line); + } + } try { print(line); } catch (InterruptedException ie) { @@ -286,12 +289,14 @@ public abstract class AltosLink implements Runnable { binary_queue.put(dup); } - public void flush_output() { + public synchronized void flush_output() { if (pending_output == null) return; - for (String s : pending_output) - System.out.print(s); - pending_output.clear(); + synchronized (pending_output) { + for (String s : pending_output) + System.out.print(s); + pending_output.clear(); + } } public void flush_input(int timeout) throws InterruptedException { |