diff options
Diffstat (limited to 'lib/cpp/src/concurrency/FunctionRunner.h')
-rw-r--r-- | lib/cpp/src/concurrency/FunctionRunner.h | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/lib/cpp/src/concurrency/FunctionRunner.h b/lib/cpp/src/concurrency/FunctionRunner.h new file mode 100644 index 000000000..221692767 --- /dev/null +++ b/lib/cpp/src/concurrency/FunctionRunner.h @@ -0,0 +1,77 @@ +/* + * 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 |