liblttng-ust/getenv.h

   1 /*
   2  * SPDX-License-Identifier: LGPL-2.1-only
   3  *
   4  * Copyright (C) 2015 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   5  */
   6
   7 #ifndef _COMPAT_GETENV_H
   8 #define _COMPAT_GETENV_H
   9
  10 /*
  11  * Always add the lttng-ust environment variables to lttng_getenv()
  12  * infrastructure rather than using getenv() directly from lttng-ust.
  13  * This ensures that we don't trigger races between getenv() invoked by
  14  * lttng-ust listener threads invoked concurrently with setenv() called
  15  * by an otherwise single-threaded application thread. (the application
  16  * is not aware that it runs with lttng-ust)
  17  */
  18
  19 char *lttng_getenv(const char *name);
  20
  21 void lttng_ust_getenv_init(void);
  22
  23 #endif /* _COMPAT_GETENV_H */