-#ifndef _UST_ALIGN_H
-#define _UST_ALIGN_H
-
/*
- * lttng/align.h
- *
- * (C) Copyright 2010-2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
- * OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
+ * SPDX-License-Identifier: MIT
*
- * Permission is hereby granted to use or copy this program
- * for any purpose, provided the above notices are retained on all copies.
- * Permission to modify the code and to distribute modified code is granted,
- * provided the above notices are retained, and a notice that the code was
- * modified is included with the above copyright notice.
+ * Copyright (C) 2010-2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*/
-#include <lttng/bug.h>
-#include <unistd.h>
+#ifndef _LTTNG_ALIGN_H
+#define _LTTNG_ALIGN_H
-#define PAGE_SIZE sysconf(_SC_PAGE_SIZE)
-#define PAGE_MASK (~(PAGE_SIZE - 1))
-#define __ALIGN_MASK(v, mask) (((v) + (mask)) & ~(mask))
-#define ALIGN(v, align) __ALIGN_MASK(v, (typeof(v)) (align) - 1)
-#define PAGE_ALIGN(addr) ALIGN(addr, PAGE_SIZE)
+#include <lttng/bug.h>
/**
- * offset_align - Calculate the offset needed to align an object on its natural
- * alignment towards higher addresses.
+ * lttng_ust_offset_align - Calculate the offset needed to align an object on
+ * its natural alignment towards higher addresses.
* @align_drift: object offset from an "alignment"-aligned address.
* @alignment: natural object alignment. Must be non-zero, power of 2.
*
* Returns the offset that must be added to align towards higher
* addresses.
*/
-#define offset_align(align_drift, alignment) \
+#define lttng_ust_offset_align(align_drift, alignment) \
({ \
LTTNG_BUILD_RUNTIME_BUG_ON((alignment) == 0 \
|| ((alignment) & ((alignment) - 1))); \
})
/**
- * offset_align_floor - Calculate the offset needed to align an object
- * on its natural alignment towards lower addresses.
+ * lttng_ust_offset_align_floor - Calculate the offset needed to align an
+ * object on its natural alignment towards lower addresses.
* @align_drift: object offset from an "alignment"-aligned address.
* @alignment: natural object alignment. Must be non-zero, power of 2.
*
* Returns the offset that must be substracted to align towards lower addresses.
*/
-#define offset_align_floor(align_drift, alignment) \
+#define lttng_ust_offset_align_floor(align_drift, alignment) \
({ \
LTTNG_BUILD_RUNTIME_BUG_ON((alignment) == 0 \
|| ((alignment) & ((alignment) - 1))); \
- (((align_drift) - (alignment)) & ((alignment) - 1); \
+ (((align_drift) - (alignment)) & ((alignment) - 1)); \
})
-#endif /* _UST_ALIGN_H */
+#endif /* _LTTNG_ALIGN_H */