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65 lines
2.1 KiB
C
65 lines
2.1 KiB
C
/**
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* Copyright (c) 2009, 2010 Open Information Security Foundation.
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*
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* \author Anoop Saldanha <poonaatsoc@gmail.com>
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*
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* \file Generic queues. Any instance that wants to get itself on the generic
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* queue, would have to implement the template struct SCDQGenericQData_
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* defined below.
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*/
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#ifndef __DATA_QUEUE_H__
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#define __DATA_QUEUE_H__
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#include "threads.h"
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/**
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* \brief Generic template for any data structure that wants to be on the
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* queue. Any other data structure that wants to be on the queue
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* needs to use this template and define its own members from
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* <your_own_structure_members_from_here_on> onwards.
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*/
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typedef struct SCDQGenericQData_ {
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/* this is needed when we want to supply a list of data items */
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struct SCDQGenericQData_ *next;
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struct SCDQGenericQData_ *prev;
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/* if we want to consider this pointer as the head of a list, this var
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* holds the no of elements in the list. Else it holds a <need_to_think>. */
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//uint16_t len;
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/* in case this data instance is the head of a list, we can refer the
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* bottomost instance directly using this var */
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//struct SCDQGenericaQData *bot;
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/* any other data structure that wants to be on the queue can implement
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* its own memebers from here on, in its structure definition. Just note
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* that the first 2 members should always be next and prev in the same
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* order */
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// <your_own_structure_members_from_here_on>
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} SCDQGenericQData;
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/**
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* \brief The data queue to hold instances that implement the template
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* SCDQGenericQData.
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*/
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typedef struct SCDQDataQueue_ {
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/* holds the item at the top of the queue */
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SCDQGenericQData *top;
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/* holds the item at the bottom of the queue */
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SCDQGenericQData *bot;
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/* no of items currently in the queue */
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uint16_t len;
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#ifdef DBG_PERF
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uint16_t dbg_maxlen;
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#endif /* DBG_PERF */
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SCMutex mutex_q;
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SCCondT cond_q;
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} SCDQDataQueue;
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void SCDQDataEnqueue(SCDQDataQueue *, SCDQGenericQData *);
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SCDQGenericQData *SCDQDataDequeue(SCDQDataQueue *);
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#endif /* __DATA_QUEUE_H__ */
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