dbg.h (2717B)
1 /* 2 * BSD 2-Clause License 3 * 4 * Copyright (C) 2014-2016, Lazaros Koromilas <lostd@2f30.org> 5 * Copyright (C) 2014-2016, Dimitris Papastamos <sin@2f30.org> 6 * Copyright (C) 2016-2022, Arun Prakash Jana <engineerarun@gmail.com> 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions are met: 11 * 12 * * Redistributions of source code must retain the above copyright notice, this 13 * list of conditions and the following disclaimer. 14 * 15 * * Redistributions in binary form must reproduce the above copyright notice, 16 * this list of conditions and the following disclaimer in the documentation 17 * and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 22 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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 OR 25 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 27 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #pragma once 32 33 #ifdef DEBUG 34 static int DEBUG_FD; 35 36 static int xprintf(int fd, const char *fmt, ...) 37 { 38 char buf[BUFSIZ]; 39 int r; 40 va_list ap; 41 42 va_start(ap, fmt); 43 r = vsnprintf(buf, sizeof(buf), fmt, ap); 44 if (r > 0 && (unsigned int)r < sizeof(buf)) 45 r = write(fd, buf, r); 46 va_end(ap); 47 return r; 48 } 49 50 static int enabledbg(void) 51 { 52 FILE *fp = fopen("/tmp/nnndbg", "w"); 53 54 if (!fp) { 55 perror("dbg(1)"); 56 57 fp = fopen("./nnndbg", "w"); 58 if (!fp) { 59 perror("dbg(2)"); 60 return -1; 61 } 62 } 63 64 DEBUG_FD = dup(fileno(fp)); 65 fclose(fp); 66 if (DEBUG_FD == -1) { 67 perror("dbg(3)"); 68 return -1; 69 } 70 71 return 0; 72 } 73 74 static void disabledbg(void) 75 { 76 close(DEBUG_FD); 77 } 78 79 #define STRINGIFY(x) #x 80 #define TOSTRING(x) STRINGIFY(x) 81 82 #define DPRINTF_D(x) xprintf(DEBUG_FD, "ln " TOSTRING(__LINE__) ": " #x "=%d\n", x) 83 #define DPRINTF_U(x) xprintf(DEBUG_FD, "ln " TOSTRING(__LINE__) ": " #x "=%u\n", x) 84 #define DPRINTF_S(x) xprintf(DEBUG_FD, "ln " TOSTRING(__LINE__) ": " #x "=%s\n", x) 85 #define DPRINTF_P(x) xprintf(DEBUG_FD, "ln " TOSTRING(__LINE__) ": " #x "=%p\n", x) 86 #else 87 #define DPRINTF_D(x) 88 #define DPRINTF_U(x) 89 #define DPRINTF_S(x) 90 #define DPRINTF_P(x) 91 #endif /* DEBUG */