Initial checkin of gRPC to third_party/

third_party/grpc/include/grpc++/impl/thd_no_cxx11.h

+/*
+ *
+ * Copyright 2015, 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 GRPCXX_IMPL_THD_NO_CXX11_H
+#define GRPCXX_IMPL_THD_NO_CXX11_H
+
+#include <grpc/support/thd.h>
+
+namespace grpc {
+
+class thread {
+ public:
+  template <class T>
+  thread(void (T::*fptr)(), T *obj) {
+    func_ = new thread_function<T>(fptr, obj);
+    joined_ = false;
+    start();
+  }
+  template <class T, class U>
+  thread(void (T::*fptr)(U arg), T *obj, U arg) {
+    func_ = new thread_function_arg<T, U>(fptr, obj, arg);
+    joined_ = false;
+    start();
+  }
+  ~thread() {
+    if (!joined_) std::terminate();
+    delete func_;
+  }
+  thread(thread &&other)
+      : func_(other.func_), thd_(other.thd_), joined_(other.joined_) {
+    other.joined_ = true;
+    other.func_ = NULL;
+  }
+  void join() {
+    gpr_thd_join(thd_);
+    joined_ = true;
+  }
+
+ private:
+  void start() {
+    gpr_thd_options options = gpr_thd_options_default();
+    gpr_thd_options_set_joinable(&options);
+    gpr_thd_new(&thd_, thread_func, (void *)func_, &options);
+  }
+  static void thread_func(void *arg) {
+    thread_function_base *func = (thread_function_base *)arg;
+    func->call();
+  }
+  class thread_function_base {
+   public:
+    virtual ~thread_function_base() {}
+    virtual void call() = 0;
+  };
+  template <class T>
+  class thread_function : public thread_function_base {
+   public:
+    thread_function(void (T::*fptr)(), T *obj) : fptr_(fptr), obj_(obj) {}
+    virtual void call() { (obj_->*fptr_)(); }
+
+   private:
+    void (T::*fptr_)();
+    T *obj_;
+  };
+  template <class T, class U>
+  class thread_function_arg : public thread_function_base {
+   public:
+    thread_function_arg(void (T::*fptr)(U arg), T *obj, U arg)
+        : fptr_(fptr), obj_(obj), arg_(arg) {}
+    virtual void call() { (obj_->*fptr_)(arg_); }
+
+   private:
+    void (T::*fptr_)(U arg);
+    T *obj_;
+    U arg_;
+  };
+  thread_function_base *func_;
+  gpr_thd_id thd_;
+  bool joined_;
+
+  // Disallow copy and assign.
+  thread(const thread &);
+  void operator=(const thread &);
+};
+
+}  // namespace grpc
+
+#endif  // GRPCXX_IMPL_THD_NO_CXX11_H