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Diffstat (limited to '')
-rw-r--r-- | src/main/java/de/thedevstack/conversationsplus/utils/SerialSingleThreadExecutor.java | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/src/main/java/de/thedevstack/conversationsplus/utils/SerialSingleThreadExecutor.java b/src/main/java/de/thedevstack/conversationsplus/utils/SerialSingleThreadExecutor.java new file mode 100644 index 00000000..264645c6 --- /dev/null +++ b/src/main/java/de/thedevstack/conversationsplus/utils/SerialSingleThreadExecutor.java @@ -0,0 +1,34 @@ +package de.thedevstack.conversationsplus.utils; + +import java.util.ArrayDeque; +import java.util.Queue; +import java.util.concurrent.Executor; +import java.util.concurrent.Executors; + +public class SerialSingleThreadExecutor implements Executor { + + final Executor executor = Executors.newSingleThreadExecutor(); + final Queue<Runnable> tasks = new ArrayDeque(); + Runnable active; + + public synchronized void execute(final Runnable r) { + tasks.offer(new Runnable() { + public void run() { + try { + r.run(); + } finally { + scheduleNext(); + } + } + }); + if (active == null) { + scheduleNext(); + } + } + + protected synchronized void scheduleNext() { + if ((active = tasks.poll()) != null) { + executor.execute(active); + } + } +} |