1 /* $NetBSD: ctrace.c,v 1.23 2018/10/29 00:31:57 uwe 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 1.23 2018/10/29 00:31:57 uwe 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 static void 59 __CTRACE_init(void) 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 if (tracemask < 0) 69 tracemask = (0 - tracemask) ^ __CTRACE_ALL; 70 if (tracemask == 0) 71 return; 72 73 tf = getenv("CURSES_TRACE_FILE"); 74 75 if ((tf != NULL) && !strcmp( tf, "<none>")) 76 tf = NULL; 77 78 if (tf != NULL) 79 tracefp = fopen(tf, "w"); 80 81 init_done = 1; 82 __CTRACE(__CTRACE_ALL, "Trace mask: 0x%08x\n", tracemask); 83 } 84 85 void 86 __CTRACE(int area, const char *fmt,...) 87 { 88 static int seencr = 1; 89 va_list ap; 90 91 if (!init_done) 92 __CTRACE_init(); 93 if (tracefp == NULL || !(tracemask & area)) 94 return; 95 96 if (seencr && (tracemask & __CTRACE_TSTAMP)) { 97 struct timeval tv; 98 gettimeofday(&tv, NULL); 99 (void)fprintf(tracefp, "%llu.%06lu: ", 100 (long long)tv.tv_sec, (long)tv.tv_usec); 101 } 102 va_start(ap, fmt); 103 (void)vfprintf(tracefp, fmt, ap); 104 seencr = (strchr(fmt, '\n') != NULL); 105 va_end(ap); 106 (void)fflush(tracefp); 107 } 108 #else 109 /* this kills the empty translation unit message from lint... */ 110 void 111 __cursesi_make_lint_shut_up_if_debug_not_defined(void); 112 113 void 114 __cursesi_make_lint_shut_up_if_debug_not_defined(void) 115 { 116 return; 117 } 118 #endif 119