/usr/include/x86_64-linux-gnu/alljoyn/services_common/AsyncTaskQueue.h is in liballjoynservices-dev-1604 16.04-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright AllSeen Alliance. All rights reserved.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
******************************************************************************/
#ifndef ASYNC_TASK_QUEUE_H_
#define ASYNC_TASK_QUEUE_H_
#ifdef _WIN32
#include <Windows.h>
#define pthread_mutex_t CRITICAL_SECTION
#define pthread_cond_t CONDITION_VARIABLE
#else
#include <pthread.h>
#endif
#include <queue>
#if defined(QCC_OS_GROUP_WINDOWS)
/* Disabling warning C 4100. Function doesnt use all passed in parameters */
/* Disabling warning C 4007. main must be __cdecl */
/* Disabling warning C 4512. assignment operator could not be generated */
#pragma warning(push)
#pragma warning(disable: 4100)
#pragma warning(disable: 4007)
#pragma warning(disable: 4512)
#endif
namespace ajn {
namespace services {
/**
* class TaskData
* Base class to represent message
*/
class TaskData {
public:
virtual ~TaskData();
};
/**
* class AsyncTask
* User must derived from this class and implement its virtual functions
*/
class AsyncTask {
public:
AsyncTask() { }
virtual ~AsyncTask() { };
/**
* OnEmptyQueue - handling 'queue become empty' events.
*/
virtual void OnEmptyQueue() = 0;
/**
* OnEmptyQueue - handling 'queue got new message' events.
* @param taskdata - pointer to the data that currently processed.
*/
virtual void OnTask(TaskData const* taskdata) = 0;
};
/**
* class FeedbackAsyncTask provides option to process asynchronous tasks
*/
class AsyncTaskQueue {
public:
/**
* AsyncTaskQueue constructor
* @param asyncTask - pointer to the class which callbacks will be called.
* @param ownersheap - if true, the queue will delete the data after calling to callbacks.
*/
AsyncTaskQueue(AsyncTask* asyncTask, bool ownersheap = true);
/**
* AsyncTaskQueue destructor
*/
~AsyncTaskQueue();
/**
* Start
*/
void Start();
/**
* Stop
*/
void Stop();
/**
* Enqueue data
*/
void Enqueue(TaskData const* taskdata);
private:
/**
* The thread responsible for receiving messages
*/
#ifdef _WIN32
HANDLE m_handle;
#else
pthread_t m_Thread;
#endif
/**
* A Queue that holds the messages
*/
std::queue<TaskData const*> m_MessageQueue;
/**
* The mutex Lock
*/
pthread_mutex_t m_Lock;
/**
* The Queue Changed thread condition
*/
pthread_cond_t m_QueueChanged;
/**
* is the thread in the process of shutting down
*/
bool m_IsStopping;
/**
* A wrapper for the receiver Thread
* @param context
*/
static void* ReceiverThreadWrapper(void* context);
/**
* The function run in the Receiver
*/
void Receiver();
/**
* class to report about events to the client
*/
AsyncTask* m_AsyncTask;
/**
* is the thread is the owner of the objects in the queue and those will delete them.
*/
bool m_ownersheap;
};
} //namespace services
} //namespace ajn
#endif /* ASYNC_TASK_QUEUE_H_ */
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