1 /* $NetBSD: ctrace.c,v 1.20 2009/01/17 15:25:36 christos 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 1.20 2009/01/17 15:25:36 christos 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 static FILE *tracefp = NULL; /* Curses debugging file descriptor. */
53
54 static int tracemask; /* Areas of trace output we want. */
55
56 static int init_done = 0;
57
58 void
__CTRACE_init()59 __CTRACE_init()
60 {
61 char *tf, *tm;
62
63 tm = getenv("CURSES_TRACE_MASK");
64 if (tm == NULL)
65 tracemask = __CTRACE_ALL;
66 else {
67 tracemask = (int) strtol(tm, NULL, 0);
68 }
69 if (tracemask < 0)
70 tracemask = (0 - tracemask) ^ __CTRACE_ALL;
71 if (tracemask == 0)
72 return;
73
74 tf = getenv("CURSES_TRACE_FILE");
75
76 if ((tf != NULL) && !strcmp( tf, "<none>"))
77 tf = NULL;
78
79 if (tf != NULL)
80 tracefp = fopen(tf, "w");
81
82 init_done = 1;
83 __CTRACE(__CTRACE_ALL, "Trace mask: 0x%08x\n", tracemask);
84 }
85
86 void
__CTRACE(int area,const char * fmt,...)87 __CTRACE(int area, const char *fmt,...)
88 {
89 struct timeval tv;
90 static int seencr = 1;
91 va_list ap;
92
93 if (!init_done)
94 __CTRACE_init();
95 if (tracefp == NULL || !(tracemask & area)) {
96 return;
97 }
98 gettimeofday(&tv, NULL);
99 if (seencr && (tracemask & __CTRACE_TSTAMP)) {
100 gettimeofday(&tv, NULL);
101 (void) fprintf(tracefp, "%llu.%06lu: ",
102 (long long)tv.tv_sec, (long)tv.tv_usec);
103 }
104 va_start(ap, fmt);
105 (void) vfprintf(tracefp, fmt, ap);
106 seencr = (strchr(fmt, '\n') != NULL);
107 va_end(ap);
108 (void) fflush(tracefp);
109 }
110 #else
111 /* this kills the empty translation unit message from lint... */
112 void
113 __cursesi_make_lint_shut_up_if_debug_not_defined(void);
114
115 void
__cursesi_make_lint_shut_up_if_debug_not_defined(void)116 __cursesi_make_lint_shut_up_if_debug_not_defined(void)
117 {
118 return;
119 }
120 #endif
121