[lttng-ust.git] / liblttng-ust / getenv.h

/*
 * SPDX-License-Identifier: LGPL-2.1-only
 *
 * Copyright (C) 2015 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 */

#ifndef _COMPAT_GETENV_H
#define _COMPAT_GETENV_H

/*
 * Always add the lttng-ust environment variables to lttng_getenv()
 * infrastructure rather than using getenv() directly from lttng-ust.
 * This ensures that we don't trigger races between getenv() invoked by
 * lttng-ust listener threads invoked concurrently with setenv() called
 * by an otherwise single-threaded application thread. (the application
 * is not aware that it runs with lttng-ust)
 */

char *lttng_getenv(const char *name);

void lttng_ust_getenv_init(void);

#endif /* _COMPAT_GETENV_H */
Commit	Line	Data
730bf2af	1	/*
c0c0989a	2	* SPDX-License-Identifier: LGPL-2.1-only
730bf2af	3	*
c0c0989a	4	* Copyright (C) 2015 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
730bf2af MD	5	*/
730bf2af MD	6
c0c0989a MJ	7	#ifndef _COMPAT_GETENV_H
	8	#define _COMPAT_GETENV_H
	9
6f626d28 MD	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	*/
730bf2af	18
6f626d28	19	char lttng_getenv(const char name);
730bf2af	20
6f626d28	21	void lttng_ust_getenv_init(void);
730bf2af MD	22
730bf2af MD	23	#endif /* _COMPAT_GETENV_H */