/***********************************************************************

  $Id: timer.c 329 2006-07-25 18:39:11Z root $

  Timer thread

  Copyright (c) 1993-98 M. Kimes
  Copyright (c) 2006 Steven H. Levine

  22 Jul 06 SHL Check more run time errors

***********************************************************************/

#define INCL_DOS
#define INCL_DOSERRORS
#define INCL_WIN
#include <os2.h>

#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "fm3dll.h"
#include "fm3str.h"

#pragma alloc_text(TIMER,TimerThread,StartTimer,StopTimer)

static PSZ pszSrcFile = __FILE__;

static HEV hevTimerSem;

static void TimerThread (void *args)
{
  HAB   hab2;
  HMQ   hmq2;
  ULONG cntr = 0;

  priority_bumped();
  hab2 = WinInitialize(0);
  if(hab2) {
    hmq2 = WinCreateMsgQueue(hab2,
                             0);
    if(hmq2) {
      WinCancelShutdown(hmq2,
                        TRUE);
      if(!DosCreateEventSem(NULL,
                            &hevTimerSem,
                            0,
                            FALSE)) {
        for(;;) {
          if(DosWaitEventSem(hevTimerSem,
                             3000) !=
             ERROR_TIMEOUT)
            break;
          cntr++;
          if(hwndTree &&
             !(cntr % 3))
            PostMsg(hwndTree,
                    UM_TIMER,
                    MPVOID,
                    MPVOID);
          if(hwndBubble &&
             WinIsWindowVisible(hwndBubble))
              PostMsg(hwndBubble,
                      UM_TIMER,
                      MPVOID,
                      MPVOID);
          if(DataHwnd)
            PostMsg(DataHwnd,
                    UM_TIMER,
                    MPVOID,
                    MPVOID);
        }
        DosCloseEventSem(hevTimerSem);
      }
      WinDestroyMsgQueue(hmq2);
    }
    WinTerminate(hab2);
  }
}

//== StartTimer() return TRUE can start thread ==

BOOL StartTimer (void)
{
  INT rc = _beginthread(TimerThread,NULL,32768,(PVOID)0);

  if (rc == -1)
    Runtime_Error(pszSrcFile, __LINE__, GetPString(IDS_COULDNTSTARTTHREADTEXT));

  return rc != -1;
}

void StopTimer (void)
{
  DosPostEventSem(hevTimerSem);
}