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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_POSIXTHREADFACTORY_H_
#define _THRIFT_CONCURRENCY_POSIXTHREADFACTORY_H_ 1
#include <thrift/concurrency/Thread.h>
#include <boost/shared_ptr.hpp>
namespace apache { namespace thrift { namespace concurrency {
/**
* A thread factory to create posix threads
*
* @version $Id:$
*/
class PosixThreadFactory : public ThreadFactory {
public:
/**
* POSIX Thread scheduler policies
*/
enum POLICY {
OTHER,
FIFO,
ROUND_ROBIN
};
/**
* POSIX Thread scheduler relative priorities,
*
* Absolute priority is determined by scheduler policy and OS. This
* enumeration specifies relative priorities such that one can specify a
* priority withing a giving scheduler policy without knowing the absolute
* value of the priority.
*/
enum PRIORITY {
LOWEST = 0,
LOWER = 1,
LOW = 2,
NORMAL = 3,
HIGH = 4,
HIGHER = 5,
HIGHEST = 6,
INCREMENT = 7,
DECREMENT = 8
};
/**
* Posix thread (pthread) factory. All threads created by a factory are reference-counted
* via boost::shared_ptr and boost::weak_ptr. The factory guarantees that threads and
* the Runnable tasks they host will be properly cleaned up once the last strong reference
* to both is given up.
*
* Threads are created with the specified policy, priority, stack-size and detachable-mode
* detached means the thread is free-running and will release all system resources the
* when it completes. A detachable thread is not joinable. The join method
* of a detachable thread will return immediately with no error.
*
* By default threads are not joinable.
*/
PosixThreadFactory(POLICY policy=ROUND_ROBIN, PRIORITY priority=NORMAL, int stackSize=1, bool detached=true);
// From ThreadFactory;
boost::shared_ptr<Thread> newThread(boost::shared_ptr<Runnable> runnable) const;
// From ThreadFactory;
Thread::id_t getCurrentThreadId() const;
/**
* Gets stack size for created threads
*
* @return int size in megabytes
*/
virtual int getStackSize() const;
/**
* Sets stack size for created threads
*
* @param value size in megabytes
*/
virtual void setStackSize(int value);
/**
* Gets priority relative to current policy
*/
virtual PRIORITY getPriority() const;
/**
* Sets priority relative to current policy
*/
virtual void setPriority(PRIORITY priority);
/**
* Sets detached mode of threads
*/
virtual void setDetached(bool detached);
/**
* Gets current detached mode
*/
virtual bool isDetached() const;
private:
class Impl;
boost::shared_ptr<Impl> impl_;
};
}}} // apache::thrift::concurrency
#endif // #ifndef _THRIFT_CONCURRENCY_POSIXTHREADFACTORY_H_
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