[lttng-tools.git] / include / lttng / constant.h

/*
 * Copyright (C) 2014 David Goulet <dgoulet@efficios.com>
 *
 * SPDX-License-Identifier: LGPL-2.1-only
 *
 */

#ifndef LTTNG_CONSTANT_H
#define LTTNG_CONSTANT_H

#ifndef LTTNG_DEPRECATED
#if defined (__GNUC__) \
	&& ((__GNUC_MAJOR__ == 4) && (__GNUC_MINOR__ >= 5)  \
			|| __GNUC_MAJOR__ >= 5)
#define LTTNG_DEPRECATED(msg) __attribute__((deprecated(msg)))
#else
#define LTTNG_DEPRECATED(msg) __attribute__((deprecated))
#endif /* defined __GNUC__ */
#endif /* LTTNG_DEPRECATED */

#include <limits.h>
/*
 * Necessary to include the fixed width type limits on glibc versions older
 * than 2.18 when building with a C++ compiler.
 */
#ifndef __STDC_LIMIT_MACROS
#define __STDC_LIMIT_MACROS
#include <stdint.h>
#undef __STDC_LIMIT_MACROS
#else /* #ifndef __STDC_LIMIT_MACROS */
#include <stdint.h>
#endif /* #else #ifndef __STDC_LIMIT_MACROS */
#include <sys/types.h>

/*
 * Event symbol length. Copied from LTTng kernel ABI.
 */
#define LTTNG_SYMBOL_NAME_LEN			256

/*
 * PROC(5) mentions that PID_MAX_LIMIT may not exceed 2^22 on 64-bit HW.
 * We prefer to use 32-bits for simplicity's sake.
 */
#define LTTNG_MAX_PID				INT32_MAX
#define LTTNG_MAX_PID_STR			"2147483647"

#define LTTNG_NAME_MAX				255

/*
 * POSIX guarantees that a host name will not exceed 255 characters.
 * Moreover, RFC 1035 limits the length of a fully qualified domain name (FQDN)
 * to 255 characters.
 *
 * 256 is used to include a trailing NULL character.
 */
#define LTTNG_HOST_NAME_MAX			256

#define LTTNG_PATH_MAX				4096

#endif /* LTTNG_CONSTANT_H */
Commit	Line	Data
1239a312	1	/*
ab5be9fa	2	* Copyright (C) 2014 David Goulet <dgoulet@efficios.com>
1239a312	3	*
ab5be9fa	4	* SPDX-License-Identifier: LGPL-2.1-only
1239a312	5	*
1239a312 DG	6	*/
	7
	8	#ifndef LTTNG_CONSTANT_H
	9	#define LTTNG_CONSTANT_H
	10
	11	#ifndef LTTNG_DEPRECATED
	12	#if defined (__GNUC__) \
	13	&& ((__GNUC_MAJOR__ == 4) && (__GNUC_MINOR__ >= 5) \
	14	\|\| __GNUC_MAJOR__ >= 5)
	15	#define LTTNG_DEPRECATED(msg) __attribute__((deprecated(msg)))
	16	#else
	17	#define LTTNG_DEPRECATED(msg) __attribute__((deprecated))
	18	#endif /* defined __GNUC__ */
	19	#endif /* LTTNG_DEPRECATED */
	20
	21	#include <limits.h>
	22	/*
	23	* Necessary to include the fixed width type limits on glibc versions older
	24	* than 2.18 when building with a C++ compiler.
	25	*/
	26	#ifndef __STDC_LIMIT_MACROS
	27	#define __STDC_LIMIT_MACROS
	28	#include <stdint.h>
	29	#undef __STDC_LIMIT_MACROS
	30	#else /* #ifndef __STDC_LIMIT_MACROS */
	31	#include <stdint.h>
	32	#endif /* #else #ifndef __STDC_LIMIT_MACROS */
	33	#include <sys/types.h>
	34
	35	/*
	36	* Event symbol length. Copied from LTTng kernel ABI.
	37	*/
fae9a062 JG	38	#define LTTNG_SYMBOL_NAME_LEN 256
	39
	40	/*
	41	* PROC(5) mentions that PID_MAX_LIMIT may not exceed 2^22 on 64-bit HW.
	42	* We prefer to use 32-bits for simplicity's sake.
	43	*/
	44	#define LTTNG_MAX_PID INT32_MAX
	45	#define LTTNG_MAX_PID_STR "2147483647"
1239a312	46
36d2e35d MJ	47	#define LTTNG_NAME_MAX 255
36d2e35d MJ	48
b867041c JG	49	/*
	50	* POSIX guarantees that a host name will not exceed 255 characters.
	51	* Moreover, RFC 1035 limits the length of a fully qualified domain name (FQDN)
	52	* to 255 characters.
	53	*
	54	* 256 is used to include a trailing NULL character.
	55	*/
	56	#define LTTNG_HOST_NAME_MAX 256
9cf3eb20	57
ba86d0a7 MJ	58	#define LTTNG_PATH_MAX 4096
ba86d0a7 MJ	59
1239a312	60	#endif /* LTTNG_CONSTANT_H */