qeq_init.c

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/*****************************************************************************
* Product: QF/C
* Last Updated for Version: 4.3.00
* Date of the Last Update:  Oct 30, 2011
*
*                    Q u a n t u m     L e a P s
*                    ---------------------------
*                    innovating embedded systems
*
* Copyright (C) 2002-2008 Quantum Leaps, LLC. All rights reserved.
*
* This software may be distributed and modified under the terms of the GNU
* General Public License version 2 (GPL) as published by the Free Software
* Foundation and appearing in the file GPL.TXT included in the packaging of
* this file. Please note that GPL Section 2[b] requires that all works based
* on this software must also be made publicly available under the terms of
* the GPL ("Copyleft").
*
* Alternatively, this software may be distributed and modified under the
* terms of Quantum Leaps commercial licenses, which expressly supersede
* the GPL and are specifically designed for licensees interested in
* retaining the proprietary status of their code.
*
* Contact information:
* Quantum Leaps Web site:  http://www.quantum-leaps.com
* e-mail:                  info@quantum-leaps.com
*****************************************************************************/
#include "qf_pkg.h"

/*..........................................................................*/
void QEQueue_init(QEQueue *me, QEvent const *qSto[], QEQueueCtr qLen) {
    QS_CRIT_STAT_

    me->frontEvt = (QEvent *)0;                   /* no events in the queue */
    me->ring     = &qSto[0];            /* the beginning of the ring buffer */
    me->end      = qLen;
    me->head     = (QEQueueCtr)0;
    me->tail     = (QEQueueCtr)0;
    me->nFree    = qLen;
    me->nMin     = qLen;

    QS_BEGIN_(QS_QF_EQUEUE_INIT, QS_eqObj_, me)
        QS_OBJ_(qSto);                               /* this QEQueue object */
        QS_EQC_(qLen);                           /* the length of the queue */
    QS_END_()
}