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ctrace.c revision 1.16 
      1 /*	$NetBSD: ctrace.c,v 1.16 2007/01/17 23:24:22 hubertf Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1992, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 #if 0
     35 static char sccsid[] = "@(#)ctrace.c	8.2 (Berkeley) 10/5/93";
     36 #else
     37 __RCSID("$NetBSD: ctrace.c,v 1.16 2007/01/17 23:24:22 hubertf Exp $");
     38 #endif
     39 #endif				/* not lint */
     40 
     41 #ifdef DEBUG
     42 #include <stdarg.h>
     43 #include <stdio.h>
     44 #include <stdlib.h>
     45 
     46 #include <sys/time.h>
     47 #include <string.h>
     48 
     49 #include "curses.h"
     50 #include "curses_private.h"
     51 
     52 #ifndef TFILE
     53 #define	TFILE	"__curses.out"
     54 #endif
     55 
     56 static FILE *tracefp;		/* Curses debugging file descriptor. */
     57 
     58 void
     59 __CTRACE(const char *fmt,...)
     60 {
     61 	struct timeval tv;
     62         static int seencr = 1;
     63 	va_list ap;
     64 
     65 	if (tracefp == (void *)~0)
     66 		return;
     67 	if (tracefp == NULL) {
     68 		char *tf = getenv("CURSES_TRACE_FILE");
     69 		if (!tf || strcmp( tf, "<none>"))
     70 			tracefp = fopen(tf ? tf : TFILE, "w");
     71 	}
     72 	if (tracefp == NULL) {
     73 		tracefp = (void *)~0;
     74 		return;
     75 	}
     76 	gettimeofday(&tv, NULL);
     77         if (seencr) {
     78                 gettimeofday(&tv, NULL);
     79                 (void) fprintf(tracefp, "%lu.%06lu: ", tv.tv_sec, tv.tv_usec);
     80         }
     81 	va_start(ap, fmt);
     82         (void) vfprintf(tracefp, fmt, ap);
     83         seencr = (strchr(fmt, '\n') != NULL);
     84 	va_end(ap);
     85 	(void) fflush(tracefp);
     86 }
     87 #else
     88 /* this kills the empty translation unit message from lint... */
     89 void
     90 __cursesi_make_lint_shut_up_if_debug_not_defined(void);
     91 
     92 void
     93 __cursesi_make_lint_shut_up_if_debug_not_defined(void)
     94 {
     95 	return;
     96 }
     97 #endif
     98