src/ucx/logging.c

Sat, 13 Jan 2018 18:48:19 +0100

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Sat, 13 Jan 2018 18:48:19 +0100
branch
aio
changeset 192
6a145e13d933
parent 135
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child 254
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permissions
-rw-r--r--

replaces eventfd with pipe and closes aio branch

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1 /*
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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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3 *
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4 * Copyright 2016 Olaf Wintermann. All rights reserved.
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5 *
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6 * Redistribution and use in source and binary forms, with or without
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7 * modification, are permitted provided that the following conditions are met:
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8 *
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9 * 1. Redistributions of source code must retain the above copyright
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10 * notice, this list of conditions and the following disclaimer.
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11 *
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12 * 2. Redistributions in binary form must reproduce the above copyright
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13 * notice, this list of conditions and the following disclaimer in the
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14 * documentation and/or other materials provided with the distribution.
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15 *
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16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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26 * POSSIBILITY OF SUCH DAMAGE.
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27 */
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28
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29 #include "logging.h"
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30 #include <stdlib.h>
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31 #include <string.h>
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32 #include <stdarg.h>
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33 #include <time.h>
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34
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35 UcxLogger *ucx_logger_new(void *stream, unsigned int level, unsigned int mask) {
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36 UcxLogger *logger = (UcxLogger*) malloc(sizeof(UcxLogger));
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37 if (logger != NULL) {
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38 logger->stream = stream;
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39 logger->writer = (write_func)fwrite;
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40 logger->dateformat = (char*) "%F %T %z ";
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41 logger->level = level;
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42 logger->mask = mask;
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43 logger->levels = ucx_map_new(8);
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44
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45 unsigned int l;
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46 l = UCX_LOGGER_ERROR;
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47 ucx_map_int_put(logger->levels, l, (void*) "[ERROR]");
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48 l = UCX_LOGGER_WARN;
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49 ucx_map_int_put(logger->levels, l, (void*) "[WARNING]");
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50 l = UCX_LOGGER_INFO;
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51 ucx_map_int_put(logger->levels, l, (void*) "[INFO]");
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52 l = UCX_LOGGER_TRACE;
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53 ucx_map_int_put(logger->levels, l, (void*) "[TRACE]");
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54 }
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55
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56 return logger;
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57 }
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58
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59 void ucx_logger_free(UcxLogger *logger) {
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60 ucx_map_free(logger->levels);
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61 free(logger);
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62 }
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63
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64 // estimated max. message length (documented)
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65 #define UCX_LOGGER_MSGMAX 4096
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66
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67 void ucx_logger_logf(UcxLogger *logger, unsigned int level, const char* file,
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68 const unsigned int line, const char *format, ...) {
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69 if (level <= logger->level) {
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70 char msg[UCX_LOGGER_MSGMAX];
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71 char *text;
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72 size_t k = 0;
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73 size_t n;
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74
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75 if ((logger->mask & UCX_LOGGER_LEVEL) > 0) {
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76 text = (char*) ucx_map_int_get(logger->levels, level);
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77 n = strlen(text);
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78 n = n > 256 ? 256 : n;
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79 memcpy(msg+k, text, n);
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80 k += n;
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81 msg[k++] = ' ';
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82 }
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83 if ((logger->mask & UCX_LOGGER_TIMESTAMP) > 0) {
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84 time_t now = time(NULL);
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85 k += strftime(msg+k, 128, logger->dateformat, localtime(&now));
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86 }
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87 if ((logger->mask & UCX_LOGGER_SOURCE) > 0) {
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88 n = strlen(file);
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89 memcpy(msg+k, file, n);
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90 k += n;
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91 k += sprintf(msg+k, ":%u ", line);
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92 }
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93
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94 msg[k++] = '-'; msg[k++] = ' ';
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95
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96 va_list args;
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97 va_start (args, format);
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98 k += vsnprintf(msg+k, UCX_LOGGER_MSGMAX-k-1, format, args);
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99 va_end (args);
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100
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101 msg[k++] = '\n';
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102
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103 logger->writer(msg, 1, k, logger->stream);
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104 }
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105 }

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