ucx: ucx/logging.c@b7d1317b138e

     1 /*

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

     3  *

     4  * Copyright 2017 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 "logging.h"

    30 #include <stdlib.h>

    31 #include <string.h>

    32 #include <stdarg.h>

    33 #include <time.h>

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

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

    37     if (logger != NULL) {

    38         logger->stream = stream;

    39         logger->writer = (write_func)fwrite;

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

    41         logger->level = level;

    42         logger->mask = mask;

    43         logger->levels = ucx_map_new(8);

    45         unsigned int l;

    46         l = UCX_LOGGER_ERROR;

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

    48         l = UCX_LOGGER_WARN;

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

    50         l = UCX_LOGGER_INFO;

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

    52         l = UCX_LOGGER_TRACE;

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

    54     }

    56     return logger;

    57 }

    59 void ucx_logger_free(UcxLogger *logger) {

    60     ucx_map_free(logger->levels);

    61     free(logger);

    62 }

    64 // estimated max. message length (documented)

    65 #define UCX_LOGGER_MSGMAX 4096

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

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

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

    70         char msg[UCX_LOGGER_MSGMAX];

    71         char *text;

    72         size_t k = 0;

    73         size_t n;

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

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

    77             n = strlen(text);

    78             n = n > 256 ? 256 : n;

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

    80             k += n;

    81             msg[k++] = ' ';

    82         }

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

    84             time_t now = time(NULL);

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

    86         }

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

    88             n = strlen(file);

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

    90             k += n;

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

    92         }

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

    96         va_list args;

    97         va_start (args, format);

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

    99         va_end (args);

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

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

   104     }

   105 }

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