src/lib/assert-cond.c

   1 /*
   2  * SPDX-License-Identifier: MIT
   3  *
   4  * Copyright 2020 Philippe Proulx <pproulx@efficios.com>
   5  */
   6
   7 #define BT_LOG_TAG "LIB/ASSERT-COND"
   8 #include "lib/logging.h"
   9
  10 #include <string.h>
  11 #include <stdarg.h>
  12 #include <glib.h>
  13 #include "common/assert.h"
  14 #include "common/macros.h"
  15 #include "assert-cond-base.h"
  16
  17 static
  18 GString *format_cond_id(const char *cond_type, const char *func,
  19                 const char *id_suffix)
  20 {
  21         static const char func_prefix[] = "bt_";
  22         GString *id = g_string_new(NULL);
  23         const char *src_ch;
  24
  25         BT_ASSERT(id);
  26
  27         /* Condition type */
  28         BT_ASSERT(cond_type);
  29         g_string_append_printf(id, "%s:", cond_type);
  30
  31         /* Function name: no prefix */
  32         BT_ASSERT(func);
  33         BT_ASSERT(strstr(func, func_prefix) == func);
  34         src_ch = &func[strlen(func_prefix)];
  35
  36         /* Function name: `_` replaced with `-` */
  37         for (; *src_ch; src_ch++) {
  38                 char dst_ch;
  39
  40                 if (*src_ch == '_') {
  41                         dst_ch = '-';
  42                 } else {
  43                         dst_ch = *src_ch;
  44                 }
  45
  46                 g_string_append_c(id, dst_ch);
  47         }
  48
  49         /* Suffix */
  50         BT_ASSERT(id_suffix);
  51         g_string_append_printf(id, ":%s", id_suffix);
  52
  53         return id;
  54 }
  55
  56 BT_HIDDEN
  57 void bt_lib_assert_cond_failed(const char *cond_type, const char *func,
  58                 const char *id_suffix, const char *fmt, ...)
  59 {
  60         va_list args;
  61         GString *cond_id = format_cond_id(cond_type, func, id_suffix);
  62
  63         BT_ASSERT(cond_id);
  64         BT_ASSERT_COND_MSG("Babeltrace 2 library %scondition not satisfied.",
  65                 cond_type);
  66         BT_ASSERT_COND_MSG("------------------------------------------------------------------------");
  67         BT_ASSERT_COND_MSG("Condition ID: `%s`.", cond_id->str);
  68         g_string_free(cond_id, TRUE);
  69         BT_ASSERT_COND_MSG("Function: %s().", func);
  70         BT_ASSERT_COND_MSG("------------------------------------------------------------------------");
  71         BT_ASSERT_COND_MSG("Error is:");
  72         va_start(args, fmt);
  73         bt_lib_log_v(_BT_LOG_SRCLOC_FUNCTION, __FILE__, __LINE__, BT_LOG_FATAL,
  74                 BT_LOG_TAG, fmt, &args);
  75         va_end(args);
  76         BT_ASSERT_COND_MSG("Aborting...");
  77         bt_common_abort();
  78 }