repeatedly acquire lock on trade shut down and fix timeout

common/src/main/java/haveno/common/ThreadUtils.java

@@ -65,12 +65,17 @@ public class ThreadUtils {
         }
     }
 
-    public static void shutDown(String threadId, long timeoutMs) {
+    public static void shutDown(String threadId) {
+        shutDown(threadId, null);
+    }
+
+    public static void shutDown(String threadId, Long timeoutMs) {
+        if (timeoutMs == null) timeoutMs = Long.MAX_VALUE;
         ExecutorService pool = null;
         synchronized (EXECUTORS) {
-            if (!EXECUTORS.containsKey(threadId)) return; // thread not found
             pool = EXECUTORS.get(threadId);
         }
+        if (pool == null) return; // thread not found
         pool.shutdown();
         try {
             if (!pool.awaitTermination(timeoutMs, TimeUnit.MILLISECONDS)) pool.shutdownNow();
@@ -101,10 +106,12 @@ public class ThreadUtils {
         return futures;
     }
 
-    // TODO: these are unused; remove? use monero-java awaitTasks() when updated
-
     public static Future<?> awaitTask(Runnable task) {
-        return awaitTasks(Arrays.asList(task)).get(0);
+        return awaitTask(task, null);
+    }
+
+    public static Future<?> awaitTask(Runnable task, Long timeoutMs) {
+        return awaitTasks(Arrays.asList(task), 1, timeoutMs).get(0);
     }
 
     public static List<Future<?>> awaitTasks(Collection<Runnable> tasks) {
@@ -115,30 +122,20 @@ public class ThreadUtils {
         return awaitTasks(tasks, maxConcurrency, null);
     }
 
-    public static List<Future<?>> awaitTasks(Collection<Runnable> tasks, int maxConcurrency, Long timeoutSeconds) {
-        List<Future<?>> futures = new ArrayList<>();
-        if (tasks.isEmpty()) return futures;
-        ExecutorService pool = Executors.newFixedThreadPool(maxConcurrency);
-        for (Runnable task : tasks) futures.add(pool.submit(task));
-        pool.shutdown();
-
-        // interrupt after timeout
-        if (timeoutSeconds != null) {
-            try {
-                if (!pool.awaitTermination(timeoutSeconds, TimeUnit.SECONDS)) pool.shutdownNow();
-            } catch (InterruptedException e) {
-                pool.shutdownNow();
-                throw new RuntimeException(e);
-            }
-        }
-
-        // throw exception from any tasks
+    public static List<Future<?>> awaitTasks(Collection<Runnable> tasks, int maxConcurrency, Long timeoutMs) {
+        if (timeoutMs == null) timeoutMs = Long.MAX_VALUE;
+        if (tasks.isEmpty()) return new ArrayList<>();
+        ExecutorService executorService = Executors.newFixedThreadPool(tasks.size());
         try {
-            for (Future<?> future : futures) future.get();
+            List<Future<?>> futures = new ArrayList<>();
+            for (Runnable task : tasks) futures.add(executorService.submit(task, null));
+            for (Future<?> future : futures) future.get(timeoutMs, TimeUnit.MILLISECONDS);
+            return futures;
         } catch (Exception e) {
             throw new RuntimeException(e);
+        } finally {
+            executorService.shutdownNow();
         }
-        return futures;
     }
 
     private static boolean isCurrentThread(Thread thread, String threadId) {

core/src/main/java/haveno/core/app/HavenoExecutable.java

@@ -341,7 +341,7 @@ public abstract class HavenoExecutable implements GracefulShutDownHandler, Haven
             tasks.add(() -> injector.getInstance(XmrConnectionService.class).onShutDownStarted());
             tasks.add(() -> injector.getInstance(TradeManager.class).onShutDownStarted());
             try {
-                ThreadUtils.awaitTasks(tasks, tasks.size(), 120l); // run in parallel with timeout
+                ThreadUtils.awaitTasks(tasks, tasks.size(), 120000l); // run in parallel with timeout
             } catch (Exception e) {
                 e.printStackTrace();
             }

core/src/main/java/haveno/core/app/misc/ExecutableForAppWithP2p.java

@@ -104,7 +104,7 @@ public abstract class ExecutableForAppWithP2p extends HavenoExecutable {
                 tasks.add(() -> injector.getInstance(XmrConnectionService.class).onShutDownStarted());
                 tasks.add(() -> injector.getInstance(TradeManager.class).onShutDownStarted());
                 try {
-                    ThreadUtils.awaitTasks(tasks, tasks.size(), 120l); // run in parallel with timeout
+                    ThreadUtils.awaitTasks(tasks, tasks.size(), 120000l); // run in parallel with timeout
                 } catch (Exception e) {
                     e.printStackTrace();
                 }

core/src/main/java/haveno/core/trade/Trade.java

@@ -1226,14 +1226,31 @@ public abstract class Trade implements Tradable, Model {
         isShutDownStarted = true;
         if (!isPayoutUnlocked()) log.info("Shutting down {} {}", getClass().getSimpleName(), getId());
 
-        // shut down thread pools with timeout
-        List<Runnable> tasks = new ArrayList<>();
-        tasks.add(() -> ThreadUtils.shutDown(getId(), SHUTDOWN_TIMEOUT_MS));
-        tasks.add(() -> ThreadUtils.shutDown(getConnectionChangedThreadId(), SHUTDOWN_TIMEOUT_MS));
+        // create task to shut down trade
+        Runnable shutDownTask = () -> {
+
+            // repeatedly acquire lock to clear tasks
+            for (int i = 0; i < 20; i++) {
+                synchronized (this) {
+                    GenUtils.waitFor(10);
+                }
+            }
+
+            // shut down trade threads
+            synchronized (this) {
+                List<Runnable> shutDownThreads = new ArrayList<>();
+                shutDownThreads.add(() -> ThreadUtils.shutDown(getId()));
+                shutDownThreads.add(() -> ThreadUtils.shutDown(getConnectionChangedThreadId()));
+                ThreadUtils.awaitTasks(shutDownThreads);
+            }
+        };
+
+        // shut down trade with timeout
         try {
-            ThreadUtils.awaitTasks(tasks);
+            ThreadUtils.awaitTask(shutDownTask, SHUTDOWN_TIMEOUT_MS);
         } catch (Exception e) {
-            log.warn("Timeout shutting down {} {}", getClass().getSimpleName(), getId());
+            log.warn("Error shutting down {} {}: {}", getClass().getSimpleName(), getId(), e.getMessage());
+            e.printStackTrace();
 
             // force stop wallet
             if (wallet != null) {
@@ -1251,8 +1268,13 @@ public abstract class Trade implements Tradable, Model {
             idlePayoutSyncer = null;
         }
         if (wallet != null) {
-            xmrWalletService.saveWallet(wallet, false); // skip backup
-            stopWallet();
+            try {
+                xmrWalletService.saveWallet(wallet, false); // skip backup
+                stopWallet();
+            } catch (Exception e) {
+                // warning will be logged for main wallet, so skip logging here
+                //log.warn("Error closing monero-wallet-rpc subprocess for {} {}: {}. Was Haveno stopped manually with ctrl+c?", getClass().getSimpleName(), getId(), e.getMessage());
+            }
         }
         UserThread.execute(() -> {
             if (tradeStateSubscription != null) tradeStateSubscription.unsubscribe();

core/src/main/java/haveno/core/trade/TradeManager.java

@@ -952,6 +952,7 @@ public class TradeManager implements PersistedDataHost, DecryptedDirectMessageLi
     }
 
     private void updateTradePeriodState() {
+        if (isShutDownStarted) return;
         for (Trade trade : new ArrayList<Trade>(tradableList.getList())) {
             if (!trade.isPayoutPublished()) {
                 Date maxTradePeriodDate = trade.getMaxTradePeriodDate();

core/src/main/java/haveno/core/xmr/wallet/XmrWalletService.java

@@ -1047,7 +1047,7 @@ public class XmrWalletService {
                     wallet = null;
                 }
             } catch (Exception e) {
-                log.warn("Error closing main monero-wallet-rpc subprocess: " + e.getMessage() + ". Was Haveno stopped manually with ctrl+c?");
+                log.warn("Error closing main monero-wallet-rpc subprocess: {}. Was Haveno stopped manually with ctrl+c?", e.getMessage());
             }
         }
     }