| 1 | /* |
| 2 | * SPDX-License-Identifier: MIT |
| 3 | * |
| 4 | * Copyright (C) 2010-2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 5 | */ |
| 6 | |
| 7 | #ifndef _UST_COMMON_ALIGN_H |
| 8 | #define _UST_COMMON_ALIGN_H |
| 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 | |
| 31 | #endif /* _UST_COMMON_ALIGN_H */ |