1/* $NetBSD: ctrace.c,v 1.24 2024/06/09 13:02:24 rillig 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#if 0 34static char sccsid[] = "@(#)ctrace.c 8.2 (Berkeley) 10/5/93"; 35#else 36__RCSID("$NetBSD: ctrace.c,v 1.24 2024/06/09 13:02:24 rillig Exp $"); 37#endif 38 39#ifdef DEBUG 40#include <stdarg.h> 41#include <stdio.h> 42#include <stdlib.h> 43 44#include <sys/time.h> 45#include <string.h> 46 47#include "curses.h" 48#include "curses_private.h" 49 50static FILE *tracefp = NULL; /* Curses debugging file descriptor. */ 51 52static int tracemask; /* Areas of trace output we want. */ 53 54static int init_done = 0; 55 56static void 57__CTRACE_init(void) 58{ 59 char *tf, *tm; 60 61 tm = getenv("CURSES_TRACE_MASK"); 62 if (tm == NULL) 63 tracemask = __CTRACE_ALL; 64 else 65 tracemask = (int)strtol(tm, NULL, 0); 66 if (tracemask < 0) 67 tracemask = (0 - tracemask) ^ __CTRACE_ALL; 68 if (tracemask == 0) 69 return; 70 71 tf = getenv("CURSES_TRACE_FILE"); 72 73 if ((tf != NULL) && !strcmp( tf, "<none>")) 74 tf = NULL; 75 76 if (tf != NULL) 77 tracefp = fopen(tf, "w"); 78 79 init_done = 1; 80 __CTRACE(__CTRACE_ALL, "Trace mask: 0x%08x\n", tracemask); 81} 82 83void 84__CTRACE(int area, const char *fmt,...) 85{ 86 static int seencr = 1; 87 va_list ap; 88 89 if (!init_done) 90 __CTRACE_init(); 91 if (tracefp == NULL || !(tracemask & area)) 92 return; 93 94 if (seencr && (tracemask & __CTRACE_TSTAMP)) { 95 struct timeval tv; 96 gettimeofday(&tv, NULL); 97 (void)fprintf(tracefp, "%llu.%06lu: ", 98 (long long)tv.tv_sec, (long)tv.tv_usec); 99 } 100 va_start(ap, fmt); 101 (void)vfprintf(tracefp, fmt, ap); 102 seencr = (strchr(fmt, '\n') != NULL); 103 va_end(ap); 104 (void)fflush(tracefp); 105} 106#else 107/* Prevent an 'empty translation unit' message from lint. */ 108typedef int dummy; 109#endif 110