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 | ||
| 9d315d6d MJ |
7 | #ifndef _UST_COMMON_MACROS_H |
| 8 | #define _UST_COMMON_MACROS_H | |
| c0c0989a | 9 | |
| 35897f8b | 10 | #include <stdlib.h> |
| 97572c04 MD |
11 | #include <stdbool.h> |
| 12 | #include <string.h> | |
| 35897f8b | 13 | |
| 2eba8e39 MJ |
14 | #include <lttng/ust-arch.h> |
| 15 | ||
| 97572c04 MD |
16 | /* |
| 17 | * calloc() does not always populate the page table for the allocated | |
| 18 | * memory. Optionally enforce page table populate. | |
| 19 | */ | |
| 20 | static inline | |
| 21 | void *zmalloc_populate(size_t len, bool populate) | |
| 22 | __attribute__((always_inline)); | |
| 23 | static inline | |
| 24 | void *zmalloc_populate(size_t len, bool populate) | |
| 25 | { | |
| 26 | if (populate) { | |
| 27 | void *ret = malloc(len); | |
| 28 | if (ret == NULL) | |
| 29 | return ret; | |
| 30 | bzero(ret, len); | |
| 31 | return ret; | |
| 32 | } else { | |
| 33 | return calloc(len, 1); | |
| 34 | } | |
| 35 | } | |
| 36 | ||
| 9d315d6d MJ |
37 | /* |
| 38 | * Memory allocation zeroed | |
| 39 | */ | |
| 5f6daaef MJ |
40 | static inline |
| 41 | void *zmalloc(size_t len) | |
| 42 | __attribute__((always_inline)); | |
| 43 | static inline | |
| 35897f8b MD |
44 | void *zmalloc(size_t len) |
| 45 | { | |
| 97572c04 | 46 | return zmalloc_populate(len, false); |
| 35897f8b MD |
47 | } |
| 48 | ||
| 49 | #define max_t(type, x, y) \ | |
| 50 | ({ \ | |
| 51 | type __max1 = (x); \ | |
| 52 | type __max2 = (y); \ | |
| 53 | __max1 > __max2 ? __max1: __max2; \ | |
| 54 | }) | |
| 55 | ||
| 56 | #define min_t(type, x, y) \ | |
| 57 | ({ \ | |
| 58 | type __min1 = (x); \ | |
| 59 | type __min2 = (y); \ | |
| 60 | __min1 <= __min2 ? __min1: __min2; \ | |
| 61 | }) | |
| 62 | ||
| fd67a004 MD |
63 | #define LTTNG_ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) |
| 64 | ||
| 171fcc6f MD |
65 | /* |
| 66 | * Use of __builtin_return_address(0) sometimes seems to cause stack | |
| 67 | * corruption on 32-bit PowerPC. Disable this feature on that | |
| 68 | * architecture for now by always using the NULL value for the ip | |
| 69 | * context. | |
| 70 | */ | |
| 2eba8e39 | 71 | #if defined(LTTNG_UST_ARCH_PPC) && !defined(LTTNG_UST_ARCH_PPC64) |
| 171fcc6f | 72 | #define LTTNG_UST_CALLER_IP() NULL |
| 2eba8e39 | 73 | #else |
| 171fcc6f | 74 | #define LTTNG_UST_CALLER_IP() __builtin_return_address(0) |
| 2eba8e39 | 75 | #endif |
| 171fcc6f | 76 | |
| 9d315d6d | 77 | #endif /* _UST_COMMON_MACROS_H */ |