snprintf/core.c

   1 /*
   2  * core.c
   3  *
   4  * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; only
   9  * version 2.1 of the License.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #include <usterr-signal-safe.h>
  22
  23 volatile enum ust_loglevel ust_loglevel;
  24
  25 void init_usterr(void)
  26 {
  27         char *ust_debug;
  28
  29         if (ust_loglevel == UST_LOGLEVEL_UNKNOWN) {
  30                 /*
  31                  * This getenv is not part of lttng_getenv() because it
  32                  * is required to print ERR() performed during getenv
  33                  * initialization.
  34                  */
  35                 ust_debug = getenv("LTTNG_UST_DEBUG");
  36                 if (ust_debug)
  37                         ust_loglevel = UST_LOGLEVEL_DEBUG;
  38                 else
  39                         ust_loglevel = UST_LOGLEVEL_NORMAL;
  40         }
  41 }