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 | ||
| 2eba8e39 MJ |
12 | #include <lttng/ust-arch.h> |
| 13 | ||
| 415dfaf7 | 14 | static inline __attribute__((always_inline)) |
| 35897f8b MD |
15 | void *zmalloc(size_t len) |
| 16 | { | |
| 17 | return calloc(len, 1); | |
| 18 | } | |
| 19 | ||
| 20 | #define max_t(type, x, y) \ | |
| 21 | ({ \ | |
| 22 | type __max1 = (x); \ | |
| 23 | type __max2 = (y); \ | |
| 24 | __max1 > __max2 ? __max1: __max2; \ | |
| 25 | }) | |
| 26 | ||
| 27 | #define min_t(type, x, y) \ | |
| 28 | ({ \ | |
| 29 | type __min1 = (x); \ | |
| 30 | type __min2 = (y); \ | |
| 31 | __min1 <= __min2 ? __min1: __min2; \ | |
| 32 | }) | |
| 33 | ||
| fd67a004 MD |
34 | #define LTTNG_ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) |
| 35 | ||
| 171fcc6f MD |
36 | /* |
| 37 | * Use of __builtin_return_address(0) sometimes seems to cause stack | |
| 38 | * corruption on 32-bit PowerPC. Disable this feature on that | |
| 39 | * architecture for now by always using the NULL value for the ip | |
| 40 | * context. | |
| 41 | */ | |
| 2eba8e39 | 42 | #if defined(LTTNG_UST_ARCH_PPC) && !defined(LTTNG_UST_ARCH_PPC64) |
| 171fcc6f | 43 | #define LTTNG_UST_CALLER_IP() NULL |
| 2eba8e39 | 44 | #else |
| 171fcc6f | 45 | #define LTTNG_UST_CALLER_IP() __builtin_return_address(0) |
| 2eba8e39 | 46 | #endif |
| 171fcc6f | 47 | |
| 35897f8b | 48 | #endif /* _LTTNG_UST_HELPER_H */ |