ucx: src/logging.c@9af21a50b516

     1 /*

     2  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

     3  *

     4  * Copyright 2017 Mike Becker, Olaf Wintermann All rights reserved.

     5  *

     6  * Redistribution and use in source and binary forms, with or without

     7  * modification, are permitted provided that the following conditions are met:

     8  *

     9  *   1. Redistributions of source code must retain the above copyright

    10  *      notice, this list of conditions and the following disclaimer.

    11  *

    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  *

    16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

    17  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

    18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

    19  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE

    20  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

    21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

    22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

    23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

    24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

    25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

    26  * POSSIBILITY OF SUCH DAMAGE.

    27  */

    29 #include "ucx/logging.h"

    31 #include <stdlib.h>

    32 #include <string.h>

    33 #include <stdarg.h>

    34 #include <time.h>

    36 UcxLogger *ucx_logger_new(void *stream, unsigned int level, unsigned int mask) {

    37     UcxLogger *logger = (UcxLogger*) malloc(sizeof(UcxLogger));

    38     if (logger != NULL) {

    39         logger->stream = stream;

    40         logger->writer = (write_func)fwrite;

    41         logger->dateformat = (char*) "%F %T %z ";

    42         logger->level = level;

    43         logger->mask = mask;

    44         logger->levels = ucx_map_new(8);

    46         unsigned int l;

    47         l = UCX_LOGGER_ERROR;

    48         ucx_map_int_put(logger->levels, l, (void*) "[ERROR]");

    49         l = UCX_LOGGER_WARN;

    50         ucx_map_int_put(logger->levels, l, (void*) "[WARNING]");

    51         l = UCX_LOGGER_INFO;

    52         ucx_map_int_put(logger->levels, l, (void*) "[INFO]");

    53         l = UCX_LOGGER_DEBUG;

    54         ucx_map_int_put(logger->levels, l, (void*) "[DEBUG]");

    55         l = UCX_LOGGER_TRACE;

    56         ucx_map_int_put(logger->levels, l, (void*) "[TRACE]");

    57     }

    59     return logger;

    60 }

    62 void ucx_logger_free(UcxLogger *logger) {

    63     ucx_map_free(logger->levels);

    64     free(logger);

    65 }

    67 // estimated max. message length (documented)

    68 #define UCX_LOGGER_MSGMAX 4096

    70 void ucx_logger_logf(UcxLogger *logger, unsigned int level, const char* file,

    71         const unsigned int line, const char *format, ...) {

    72     if (level <= logger->level) {

    73         char msg[UCX_LOGGER_MSGMAX];

    74         char *text;

    75         size_t k = 0;

    76         size_t n;

    78         if ((logger->mask & UCX_LOGGER_LEVEL) > 0) {

    79             text = (char*) ucx_map_int_get(logger->levels, level);

    80             if (!text) {

    81                 text = "[UNKNOWN]";

    82             }

    83             n = strlen(text);

    84             n = n > 256 ? 256 : n;

    85             memcpy(msg+k, text, n);

    86             k += n;

    87             msg[k++] = ' ';

    88         }

    89         if ((logger->mask & UCX_LOGGER_TIMESTAMP) > 0) {

    90             time_t now = time(NULL);

    91             k += strftime(msg+k, 128, logger->dateformat, localtime(&now));

    92         }

    93         if ((logger->mask & UCX_LOGGER_SOURCE) > 0) {

    94             n = strlen(file);

    95             memcpy(msg+k, file, n);

    96             k += n;

    97             k += sprintf(msg+k, ":%u ", line);

    98         }

   100         msg[k++] = '-'; msg[k++] = ' ';

   102         va_list args;

   103         va_start (args, format);

   104         k += vsnprintf(msg+k, UCX_LOGGER_MSGMAX-k-1, format, args);

   105         va_end (args);

   107         msg[k++] = '\n';

   109         logger->writer(msg, 1, k, logger->stream);

   110     }

   111 }

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