Thrift now a TLP - INFRA-31160.1.x

git-svn-id: https://svn.apache.org/repos/asf/thrift/branches/0.1.x@1028168 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 77 insertions, 0 deletions

diff --git a/lib/cpp/src/concurrency/FunctionRunner.h b/lib/cpp/src/concurrency/FunctionRunner.h
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+++ b/lib/cpp/src/concurrency/FunctionRunner.h
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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+#ifndef _THRIFT_CONCURRENCY_FUNCTION_RUNNER_H
+#define _THRIFT_CONCURRENCY_FUNCTION_RUNNER_H 1
+
+#include <tr1/functional>
+#include "thrift/lib/cpp/concurrency/Thread.h"
+
+namespace apache { namespace thrift { namespace concurrency {
+
+/**
+ * Convenient implementation of Runnable that will execute arbitrary callbacks.
+ * Interfaces are provided to accept both a generic 'void(void)' callback, and
+ * a 'void* (void*)' pthread_create-style callback.
+ *
+ * Example use:
+ *  void* my_thread_main(void* arg);
+ *  shared_ptr<ThreadFactory> factory = ...;
+ *  shared_ptr<Thread> thread =
+ *    factory->newThread(shared_ptr<FunctionRunner>(
+ *      new FunctionRunner(my_thread_main, some_argument)));
+ *  thread->start();
+ *
+ *
+ */
+
+class FunctionRunner : public Runnable {
+ public:
+  // This is the type of callback 'pthread_create()' expects.
+  typedef void* (*PthreadFuncPtr)(void *arg);
+  // This a fully-generic void(void) callback for custom bindings.
+  typedef std::tr1::function<void()> VoidFunc;
+
+  /**
+   * Given a 'pthread_create' style callback, this FunctionRunner will
+   * execute the given callback.  Note that the 'void*' return value is ignored.
+   */
+  FunctionRunner(PthreadFuncPtr func, void* arg)
+   : func_(std::tr1::bind(func, arg))
+  { }
+
+  /**
+   * Given a generic callback, this FunctionRunner will execute it.
+   */
+  FunctionRunner(const VoidFunc& cob)
+   : func_(cob)
+  { }
+
+
+  void run() {
+    func_();
+  }
+
+ private:
+  VoidFunc func_;
+};
+
+}}} // apache::thrift::concurrency
+
+#endif // #ifndef _THRIFT_CONCURRENCY_FUNCTION_RUNNER_H