1 files changed, 87 insertions, 0 deletions
diff --git a/vendor/github.com/Benau/go_rlottie/vector_vtaskqueue.h b/vendor/github.com/Benau/go_rlottie/vector_vtaskqueue.h
new file mode 100644
index 00000000..e505c2f4
--- /dev/null
+++ b/vendor/github.com/Benau/go_rlottie/vector_vtaskqueue.h
@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 2020 Samsung Electronics Co., Ltd. All rights reserved.
+
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef VTASKQUEUE_H
+#define VTASKQUEUE_H
+
+#include <deque>
+
+template <typename Task>
+class TaskQueue {
+    using lock_t = std::unique_lock<std::mutex>;
+    std::deque<Task>      _q;
+    bool                    _done{false};
+    std::mutex              _mutex;
+    std::condition_variable _ready;
+
+public:
+    bool try_pop(Task &task)
+    {
+        lock_t lock{_mutex, std::try_to_lock};
+        if (!lock || _q.empty()) return false;
+        task = std::move(_q.front());
+        _q.pop_front();
+        return true;
+    }
+
+    bool try_push(Task &&task)
+    {
+        {
+            lock_t lock{_mutex, std::try_to_lock};
+            if (!lock) return false;
+            _q.push_back(std::move(task));
+        }
+        _ready.notify_one();
+        return true;
+    }
+
+    void done()
+    {
+        {
+            lock_t lock{_mutex};
+            _done = true;
+        }
+        _ready.notify_all();
+    }
+
+    bool pop(Task &task)
+    {
+        lock_t lock{_mutex};
+        while (_q.empty() && !_done) _ready.wait(lock);
+        if (_q.empty()) return false;
+        task = std::move(_q.front());
+        _q.pop_front();
+        return true;
+    }
+
+    void push(Task &&task)
+    {
+        {
+            lock_t lock{_mutex};
+            _q.push_back(std::move(task));
+        }
+        _ready.notify_one();
+    }
+
+};
+
+#endif  // VTASKQUEUE_H