Initial import.
diff --git a/src/cpp/server/thread_pool.h b/src/cpp/server/thread_pool.h
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+++ b/src/cpp/server/thread_pool.h
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+/*
+ *
+ * Copyright 2014, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef __GRPCPP_INTERNAL_SERVER_THREAD_POOL_H__
+#define __GRPCPP_INTERNAL_SERVER_THREAD_POOL_H__
+
+#include <grpc++/thread_pool_interface.h>
+
+#include <condition_variable>
+#include <thread>
+#include <mutex>
+#include <queue>
+#include <vector>
+
+namespace grpc {
+
+class ThreadPool : public ThreadPoolInterface {
+ public:
+ explicit ThreadPool(int num_threads);
+ ~ThreadPool();
+
+ void ScheduleCallback(const std::function<void()>& callback) final;
+
+ private:
+ std::mutex mu_;
+ std::condition_variable cv_;
+ bool shutdown_ = false;
+ std::queue<std::function<void()>> callbacks_;
+ std::vector<std::thread> threads_;
+};
+
+} // namespace grpc
+
+#endif // __GRPCPP_INTERNAL_SERVER_THREAD_POOL_H__