#line 2 "osdep/debuging.os2"
#ifdef DEBUG
/*----------------------------------------------------------------------
     Initialize debugging - open the debug log file

  Args: none

 Result: opens the debug logfile for dprints
  ----*/
void
init_debug()
{
    char *p;
    char filename[MAXPATH+1];

    if(!(debug || ps_global->debug_imap))
      return;

    /*
     * we can't assume anything about root or home dirs, so
     * just plunk it down in the same place as the pinerc
     */
    
    if(ps_global->pinerc)
      sprintf(filename, "%.*s%s",
	      last_cmpnt(ps_global->pinerc) - ps_global->pinerc,
	      ps_global->pinerc, DEBUGFILE);
    else if((p=getenv("PINEHOME"))!=NULL || (p=getenv("HOME"))!=NULL)
      build_path(filename, p, DEBUGFILE);
    else
      strcpy(filename, DEBUGFILE);

    unlink(filename);

    debugfile = fopen(filename, "w");
    if(debugfile != NULL){
	time_t now = time((time_t *)0);
	if(ps_global->debug_flush)
	  setbuf(debugfile, NULL);
	dprint(0, (debugfile,
  "Debug output of the Pine program (debug=%d debug_imap=%d). Version %s\n%s\n",
	       debug, ps_global->debug_imap, pine_version, ctime(&now)));
    }
}


void
save_debug_on_crash(dfile)
FILE *dfile;
{
    char *crashname = CRASHFILE;
    char *filename = DEBUGFILE;
    int status;
    char msg[256];
    time_t now = time((time_t *)0);

    fprintf(dfile, "\nsave_debug_on_crash: Version %s: debug level %d\n",
	pine_version, debug);
    fprintf(dfile, "\n                   : %s\n", ctime(&now));
    fprintf(dfile, "\nAttempting to save debug file to %s\n", crashname);

    fclose(dfile);

    unlink (crashname);
    status = rename (filename, crashname);

#ifdef _WINDOWS
    sprintf (msg, "Pine debugging information saved in file:  %s",
    	status == 0 ? crashname : filename);
    mswin_messagebox (msg);
#endif
}


#define CHECK_EVERY_N_TIMES 100
#define MAX_DEBUG_FILE_SIZE 200000L
/*
 * This is just to catch runaway Pines that are looping spewing out
 * debugging (and filling up a file system).  The stop doesn't have to be
 * at all precise, just soon enough to hopefully prevent filling the
 * file system.  If the debugging level is high (9 for now), then we're
 * presumably looking for some problem, so don't truncate.
 */
int
do_debug(debug_fp)
FILE *debug_fp;
{
    static int counter = CHECK_EVERY_N_TIMES;
    static int ok = 1;
    long filesize;

    if(debug < 9 && ok && --counter <= 0){
	if((filesize = fp_file_size(debug_fp)) != -1L)
	  ok = (unsigned long)filesize < (unsigned long)MAX_DEBUG_FILE_SIZE;

	counter = CHECK_EVERY_N_TIMES;
	if(!ok){
	    fprintf(debug_fp, "\n\n --- No more debugging ---\n");
	    fprintf(debug_fp,
		"     (debug file growing too large - over %ld bytes)\n\n",
		MAX_DEBUG_FILE_SIZE);
	    fflush(debug_fp);
	}
    }

    if(ok && ps_global->debug_timestamp)
      fprintf(debug_fp, "\n%s\n", debug_time(0));

    return(ok);
}


/*
 * Returns a pointer to static string for a timestamp.
 *
 * If include_date is set the date is appended.
 */
char *
debug_time(include_date)
    int include_date;
{
    time_t          t;
    struct tm      *tm_now;
    static char     timestring[23];
    char            datestr[7];

    timestring[0] = '\0';
    t = time((time_t *)0);
    if(include_date){
	tm_now = localtime(&t);
	sprintf(datestr, " %d/%d", tm_now->tm_mon+1, tm_now->tm_mday);
    }
    else
      datestr[0] = '\0';

    sprintf(timestring, "%.8s%s", ctime(&t)+11, datestr);

    return(timestring);
}
#endif /* DEBUG */


/*
 * This version just returns -1 because this system doesn't have gettimeofday.
 *
 * Returns 0 if ok
 *        -1 if can't do it
 */
int
get_time(our_time_val)
    TIMEVAL_S *our_time_val;
{
    return -1;
}


/*
 * Returns the difference between the two values, in microseconds.
 * Value returned is first - second.
 */
long
time_diff(first, second)
    TIMEVAL_S *first,
              *second;
{
    return(1000000L*(first->sec - second->sec) + (first->usec - second->usec));
}