1 files changed, 81 insertions, 0 deletions
diff --git a/src/android/jar/src/org/qtproject/qt/android/QtThread.java b/src/android/jar/src/org/qtproject/qt/android/QtThread.java
new file mode 100644
index 0000000000..0943ad3265
--- /dev/null
+++ b/src/android/jar/src/org/qtproject/qt/android/QtThread.java
@@ -0,0 +1,81 @@
+// Copyright (C) 2018 BogDan Vatra <bogdan@kdab.com>
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+
+package org.qtproject.qt.android;
+
+import java.util.ArrayList;
+import java.util.concurrent.Semaphore;
+
+class QtThread {
+    private final ArrayList<Runnable> m_pendingRunnables = new ArrayList<>();
+    private boolean m_exit = false;
+    private final Thread m_qtThread = new Thread(new Runnable() {
+        @Override
+        public void run() {
+            while (!m_exit) {
+                try {
+                    ArrayList<Runnable> pendingRunnables;
+                    synchronized (m_qtThread) {
+                        if (m_pendingRunnables.size() == 0)
+                            m_qtThread.wait();
+                        pendingRunnables = new ArrayList<>(m_pendingRunnables);
+                        m_pendingRunnables.clear();
+                    }
+                    for (Runnable runnable : pendingRunnables)
+                        runnable.run();
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                }
+            }
+        }
+    });
+
+    QtThread() {
+        m_qtThread.setName("qtMainLoopThread");
+        m_qtThread.start();
+    }
+
+    public void post(final Runnable runnable) {
+        synchronized (m_qtThread) {
+            m_pendingRunnables.add(runnable);
+            m_qtThread.notify();
+        }
+    }
+
+    public void sleep(int milliseconds) {
+        try {
+            m_qtThread.sleep(milliseconds);
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public void run(final Runnable runnable) {
+        final Semaphore sem = new Semaphore(0);
+        synchronized (m_qtThread) {
+            m_pendingRunnables.add(() -> {
+                runnable.run();
+                sem.release();
+            });
+            m_qtThread.notify();
+        }
+        try {
+            sem.acquire();
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public void exit()
+    {
+        m_exit = true;
+        synchronized (m_qtThread) {
+            m_qtThread.notify();
+        }
+        try {
+            m_qtThread.join();
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+    }
+}