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 #include "ust-helper.h"
  11
  12 /*
  13  * Always add the lttng-ust environment variables using the lttng_ust_getenv()
  14  * infrastructure rather than using getenv() directly.  This ensures that we
  15  * don't trigger races between getenv() invoked by lttng-ust listener threads
  16  * invoked concurrently with setenv() called by an otherwise single-threaded
  17  * application thread. (the application is not aware that it runs with
  18  * lttng-ust)
  19  */
  20
  21 LTTNG_HIDDEN
  22 char *lttng_ust_getenv(const char *name);
  23
  24 LTTNG_HIDDEN
  25 void lttng_ust_getenv_init(void);
  26
  27 #endif /* _COMPAT_GETENV_H */