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1 | /* |
2 | * SPDX-License-Identifier: MIT | |
3 | * | |
4 | * Copyright (C) 2010-2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
5 | */ | |
6 | ||
9d315d6d MJ |
7 | #ifndef _UST_COMMON_ALIGN_H |
8 | #define _UST_COMMON_ALIGN_H | |
cd61d9bf MJ |
9 | |
10 | #include <unistd.h> | |
11 | #include <limits.h> | |
12 | ||
13 | #ifdef __FreeBSD__ | |
14 | #include <machine/param.h> | |
15 | #endif | |
16 | ||
17 | #ifdef _SC_PAGE_SIZE | |
18 | #define LTTNG_UST_PAGE_SIZE sysconf(_SC_PAGE_SIZE) | |
19 | #elif defined(PAGE_SIZE) | |
20 | #define LTTNG_UST_PAGE_SIZE PAGE_SIZE | |
21 | #else | |
22 | #error "Please add page size detection for your OS." | |
23 | #endif | |
24 | ||
25 | #define LTTNG_UST_PAGE_MASK (~(LTTNG_UST_PAGE_SIZE - 1)) | |
26 | ||
27 | #define __LTTNG_UST_ALIGN_MASK(v, mask) (((v) + (mask)) & ~(mask)) | |
28 | #define LTTNG_UST_ALIGN(v, align) __LTTNG_UST_ALIGN_MASK(v, (__typeof__(v)) (align) - 1) | |
29 | #define LTTNG_UST_PAGE_ALIGN(addr) LTTNG_UST_ALIGN(addr, LTTNG_UST_PAGE_SIZE) | |
30 | ||
9d315d6d | 31 | #endif /* _UST_COMMON_ALIGN_H */ |