SLVService/include/sisco/event.c

/************************************************************************/   
/* SISCO SOFTWARE MODULE HEADER *****************************************/   
/************************************************************************/   
/*  (c) Copyright Systems Integration Specialists Company, Inc.,    */   
/*  1998-2006 All Rights Reserved                   */   
/*                                  */   
/* MODULE NAME : event.c                        */   
/* PRODUCT(S)  : MMSEASE-LITE                       */   
/*                                  */   
/* MODULE DESCRIPTION :                         */   
/*  Event handling functions.                   */   
/*                                  */   
/* GLOBAL FUNCTIONS DEFINED IN THIS MODULE :                */   
/*  wait_any_event ()                       */   
/*                                  */   
/* MODIFICATION LOG :                           */   
/*  Date     Who   Rev     Comments                 */   
/* --------  ---  ------   -------------------------------------------  */   
/* 11/01/06  JRB    09     Go back to gs_wait_mult_event_sem for WIN32  */   
/*             (Ethernet interface code fixed so don't  */   
/*             need to use WaitForMultipleObjectsEx).   */   
/* 04/20/05  JRB    08     Add header files (included indirectly before).*/   
/* 07/07/04  JRB    07     Del #ifdef MOSI. May need a_get_event_handles*/   
/*             added to stack lib if non-MOSI stack used.   */   
/* 10/23/03  JRB    06     Call a_get_event_handles_unix for default system.*/   
/* 05/17/02  JRB    05     Put back old code for PHARLAP_ETS, PharLap   */   
/*             doesn't have "Wait..Ex".         */   
/* 04/10/00  JRB    04     Del "select.h". See "sysincs.h".     */   
/* 04/06/00  JRB    03     Use WaitForMultipleObjectsEx for WIN32:  */   
/*             CRITICAL for ethernet driver interface.  */   
/* 08/05/99  JRB    02     Use a_get_ev.., gs_wait.. for WIN32.     */   
/*             Use hTcpEvent for OS2.           */   
/* 11/10/98  JRB    01     Created                  */   
/************************************************************************/   
   
#include "glbtypes.h"   
#include "sysincs.h"   
#include "mmsdefs.h"   
#include "glbsem.h"   
#include "acse2usr.h"   
   
#include <assert.h>   
   
#if defined (_WIN32)   
/************************************************************************/   
/*                          wait_any_event              */   
/* Windows version (also works for PHARLAP_ETS).            */   
/************************************************************************/   
   
ST_VOID wait_any_event (ST_LONG max_ms_delay)   
  {   
ST_EVENT_SEM *EventArray;   
ST_INT NumEntries;   
ST_BOOLEAN activity [2];    /* We don't chk it, but gs_wait.. needs it*/   
   
  EventArray = a_get_event_handles (&NumEntries);   
     
  /* Make sure there is at least 1 event to wait on. If not, probably   */   
  /* because library not compiled with correct switches.        */   
  assert (NumEntries > 0);   
   
  /* If this fails, size of "activity" array must be increased.     */   
  assert (NumEntries <= 2);   
  gs_wait_mult_event_sem (NumEntries, EventArray, activity, max_ms_delay);   
   
  /* Something woke us up. Don't care if it was event or timeout.   */   
  /* Just return to main loop to attempt processing.            */   
  return;   
  }   
   
#elif defined (__OS2__)   
   
/************************************************************************/   
/*                          wait_any_event              */   
/* DEBUG: not tested but should work on OS/2.               */   
/************************************************************************/   
   
ST_VOID wait_any_event (ST_LONG max_ms_delay)   
  {   
#define MMS_EVENT_SEM_ID    0   
static SEMRECORD sems[2];   
static HMUX hMux;   
APIRET apiret;   
ST_ULONG post_count;   
ST_ULONG semId;   
   
  /* This function only waits on the MMS event. To wait on other events */   
  /* also, add to the "sems" array.                 */   
   
  if (hMux == NULL)   
    {   
    sems[0].hsemCur = (void *) hTcpEvent;   
    sems[0].ulUser = MMS_EVENT_SEM_ID;   
    apiret = DosCreateMuxWaitSem (NULL, &hMux, 1, sems, DCMW_WAIT_ANY);   
    if (apiret != NO_ERROR)   
      {   
      printf ("\n DosCreateMuxWaitSem failed, rc = %d",apiret);   
      hMux = NULL;   
      }   
    return; /* Just return. New event so no one has signaled it yet.*/   
    }   
   
  /* Wait on the MMS Event Semaphore.       */   
   
  apiret = DosWaitMuxWaitSem (hMux, max_ms_delay, &semId);   
   
  if (apiret == NO_ERROR)   
    {   
    if (semId == MMS_EVENT_SEM_ID) /* MMS event         */   
      {   
      gs_reset_event_sem (hTcpEvent);   /* OS2 requires reset   */   
      }   
    }   
  else if (apiret != ERROR_TIMEOUT)   
    {   
    printf ("\n DosWaitMuxWaitSem error, apiret = %d",apiret);   
    }   
  }   
   
#elif defined(MSDOS) || defined(__MSDOS__)   
   
/************************************************************************/   
/*                          wait_any_event              */   
/************************************************************************/   
   
ST_VOID wait_any_event (ST_LONG max_ms_delay)   
  {   
  return;   
  }   
#else   /* All other systems    */   
   
/************************************************************************/   
/*                          wait_any_event              */   
/************************************************************************/   
ST_VOID wait_any_event (ST_LONG max_ms_delay)   
  {   
  struct timeval stTimeVal;   
  fd_set readfds;   
  fd_set writefds;   
  fd_set exceptfds;   
  int    nfds=0;      
  int *fd_array;    /* ptr to array of handles on which to wait */   
  int num_entries;  /* num of entries in fd_array.          */   
  int j;        /* loop index   */   
   
  FD_ZERO (&readfds);   
  FD_ZERO (&writefds);   
  FD_ZERO (&exceptfds);   
  FD_SET (0, &readfds);     /* select on "stdin"    */   
   
  /* Ask ACSE for array of handles on which to wait.    */   
  fd_array = a_get_event_handles_unix (&num_entries);   
   
  for (j = 0; j < num_entries; j++)   
    {   
    FD_SET (fd_array[j], &readfds);   
    nfds = max (nfds,fd_array[j]);   
    }   
  nfds++;   /* must be 1 greater than max handle.   */   
   
  /* If you want to wait for other events too, add more FD_SET calls,   */   
  /* and recompute "nfds" (or just set it to FD_SETSIZE).       */   
   
  max_ms_delay *= 1000; /*** Convert to micro seconds ***/   
  stTimeVal.tv_sec  = max_ms_delay / 1000000;   
  stTimeVal.tv_usec = max_ms_delay % 1000000;   
   
  nfds = select (nfds, &readfds, &writefds, &exceptfds, &stTimeVal);   
  }   
   
#endif      /* All other systems        */