projects / lttng-ust.git / blame
| Commit | Line | Data |
|---|---|---|
| 35897f8b | 1 | /* |
| c0c0989a | 2 | * SPDX-License-Identifier: LGPL-2.1-only |
| 35897f8b | 3 | * |
| c0c0989a | 4 | * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 35897f8b MD |
5 | */ |
| 6 | ||
| c0c0989a MJ |
7 | #ifndef _LTTNG_UST_HELPER_H |
| 8 | #define _LTTNG_UST_HELPER_H | |
| 9 | ||
| 35897f8b MD |
10 | #include <stdlib.h> |
| 11 | ||
| 415dfaf7 | 12 | static inline __attribute__((always_inline)) |
| 35897f8b MD |
13 | void *zmalloc(size_t len) |
| 14 | { | |
| 15 | return calloc(len, 1); | |
| 16 | } | |
| 17 | ||
| 18 | #define max_t(type, x, y) \ | |
| 19 | ({ \ | |
| 20 | type __max1 = (x); \ | |
| 21 | type __max2 = (y); \ | |
| 22 | __max1 > __max2 ? __max1: __max2; \ | |
| 23 | }) | |
| 24 | ||
| 25 | #define min_t(type, x, y) \ | |
| 26 | ({ \ | |
| 27 | type __min1 = (x); \ | |
| 28 | type __min2 = (y); \ | |
| 29 | __min1 <= __min2 ? __min1: __min2; \ | |
| 30 | }) | |
| 31 | ||
| fd67a004 MD |
32 | #define LTTNG_ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) |
| 33 | ||
| 171fcc6f MD |
34 | /* |
| 35 | * Use of __builtin_return_address(0) sometimes seems to cause stack | |
| 36 | * corruption on 32-bit PowerPC. Disable this feature on that | |
| 37 | * architecture for now by always using the NULL value for the ip | |
| 38 | * context. | |
| 39 | */ | |
| 40 | #if defined(__PPC__) && !defined(__PPC64__) | |
| 41 | #define LTTNG_UST_CALLER_IP() NULL | |
| 42 | #else /* #if defined(__PPC__) && !defined(__PPC64__) */ | |
| 43 | #define LTTNG_UST_CALLER_IP() __builtin_return_address(0) | |
| 44 | #endif /* #else #if defined(__PPC__) && !defined(__PPC64__) */ | |
| 45 | ||
| 94be38e8 JR |
46 | /* |
| 47 | * LTTNG_HIDDEN: set the hidden attribute for internal functions | |
| 48 | * On Windows, symbols are local unless explicitly exported, | |
| 49 | * see https://gcc.gnu.org/wiki/Visibility | |
| 50 | */ | |
| 51 | #if defined(_WIN32) || defined(__CYGWIN__) | |
| 52 | #define LTTNG_HIDDEN | |
| 53 | #else | |
| 54 | #define LTTNG_HIDDEN __attribute__((visibility("hidden"))) | |
| 55 | #endif | |
| 56 | ||
| 35897f8b | 57 | #endif /* _LTTNG_UST_HELPER_H */ |