| 1 | /* |
| 2 | * Copyright (C) 2014 David Goulet <dgoulet@efficios.com> |
| 3 | * |
| 4 | * SPDX-License-Identifier: LGPL-2.1-only |
| 5 | * |
| 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 | */ |
| 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" |
| 46 | |
| 47 | #define LTTNG_NAME_MAX 255 |
| 48 | |
| 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 |
| 57 | |
| 58 | #define LTTNG_PATH_MAX 4096 |
| 59 | |
| 60 | #endif /* LTTNG_CONSTANT_H */ |