unix/SysLegacyAPI.cpp

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/*----------------------------------------------------------------------------*/
/*                                                                            */
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/* Copyright (c) 2005-2009 Rexx Language Association. All rights reserved.    */
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/*********************************************************************/
 
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
 
#include "rexx.h"
 
/*********************************************************************/
/*                                                                   */
/*  Function:         RexxPullQueue()                                */
/*                                                                   */
/*  Description:      Pull an entry from a queue.                    */
/*                                                                   */
/*  Function:         Locate the queue, return its top entry to      */
/*                    the caller, and tell the queue data            */
/*                    manager to delete the entry.                   */
/*                                                                   */
/*                    If the queue is empty, the caller can elect    */
/*                    to wait for someone to post an entry.          */
/*                                                                   */
/*  Notes:            Caller is responsible for freeing the returned */
/*                    memory.                                        */
/*                                                                   */
/*                    The entry's control block is stored in the     */
/*                    entry's memory.  We must therefore obtain      */
/*                    addressability to the entry's memory before    */
/*                    we can process the entry.                      */
/*                                                                   */
/*  Input:            external queue name, wait flag.                */
/*                                                                   */
/*  Output:           queue element, data size, date/time stamp.     */
/*                                                                   */
/*  Effects:          Top entry removed from the queue.  Message     */
/*                    queued to the queue data manager.              */
/*                                                                   */
/*********************************************************************/
RexxReturnCode REXXENTRY RexxPullQueue(
  const char *name,
  PRXSTRING   data_buf,
  REXXDATETIME *dt,
  size_t waitflag)
{
    RexxQueueTime qt;
 
    // for unix platforms, this is a straight passthrough to the real API.
    RexxReturnCode rc = RexxPullFromQueue(name, data_buf, &qt, waitflag);
    // older releases for Linux used an internal structure for the timestamp
    // that had portability problems.  We need to manually copy over the fields
    // because of the mismatches.
    if (dt != NULL)
    {
        dt->hours = qt.hours;
        dt->minutes = qt.minutes;
        dt->seconds = qt.seconds;
        dt->hundredths = qt.hundredths;
        dt->microseconds = qt.microseconds;
        dt->day = qt.day;
        dt->month = qt.month;
        dt->year = qt.year;
        dt->weekday = qt.weekday;
        dt->yearday = qt.yearday;
        dt->valid = 1;
    }
    return rc;
}