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/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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#ifndef _THRIFT_CONCURRENCY_POSIXTHREADFACTORY_H_
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#define _THRIFT_CONCURRENCY_POSIXTHREADFACTORY_H_ 1
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#include "Thread.h"
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#include <boost/shared_ptr.hpp>
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namespace apache { namespace thrift { namespace concurrency {
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/**
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* A thread factory to create posix threads
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*
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* @version $Id:$
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*/
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class PosixThreadFactory : public ThreadFactory {
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public:
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/**
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* POSIX Thread scheduler policies
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*/
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enum POLICY {
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OTHER,
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FIFO,
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ROUND_ROBIN
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};
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/**
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* POSIX Thread scheduler relative priorities,
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*
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* Absolute priority is determined by scheduler policy and OS. This
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* enumeration specifies relative priorities such that one can specify a
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* priority withing a giving scheduler policy without knowing the absolute
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* value of the priority.
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*/
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enum PRIORITY {
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LOWEST = 0,
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LOWER = 1,
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LOW = 2,
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NORMAL = 3,
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HIGH = 4,
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HIGHER = 5,
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HIGHEST = 6,
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INCREMENT = 7,
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DECREMENT = 8
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};
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/**
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* Posix thread (pthread) factory. All threads created by a factory are reference-counted
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* via boost::shared_ptr and boost::weak_ptr. The factory guarantees that threads and
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* the Runnable tasks they host will be properly cleaned up once the last strong reference
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* to both is given up.
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*
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* Threads are created with the specified policy, priority, stack-size and detachable-mode
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* detached means the thread is free-running and will release all system resources the
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* when it completes. A detachable thread is not joinable. The join method
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* of a detachable thread will return immediately with no error.
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*
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* By default threads are not joinable.
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*/
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PosixThreadFactory(POLICY policy=ROUND_ROBIN, PRIORITY priority=NORMAL, int stackSize=1, bool detached=true);
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// From ThreadFactory;
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boost::shared_ptr<Thread> newThread(boost::shared_ptr<Runnable> runnable) const;
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// From ThreadFactory;
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Thread::id_t getCurrentThreadId() const;
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/**
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* Gets stack size for created threads
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*
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* @return int size in megabytes
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*/
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virtual int getStackSize() const;
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/**
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* Sets stack size for created threads
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*
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* @param value size in megabytes
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*/
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virtual void setStackSize(int value);
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/**
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* Gets priority relative to current policy
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*/
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virtual PRIORITY getPriority() const;
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/**
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* Sets priority relative to current policy
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*/
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virtual void setPriority(PRIORITY priority);
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/**
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* Sets detached mode of threads
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*/
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virtual void setDetached(bool detached);
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/**
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* Gets current detached mode
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*/
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virtual bool isDetached() const;
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private:
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class Impl;
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boost::shared_ptr<Impl> impl_;
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};
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}}} // apache::thrift::concurrency
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#endif // #ifndef _THRIFT_CONCURRENCY_POSIXTHREADFACTORY_H_
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