*
* (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.
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
*
- * 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.
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
*/
#include <lttng/bug.h>
+#include <unistd.h>
-/*
- * Align pointer on natural object alignment.
- */
-#define object_align(obj) PTR_ALIGN(obj, __alignof__(*(obj)))
-#define object_align_floor(obj) PTR_ALIGN_FLOOR(obj, __alignof__(*(obj)))
+#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)
/**
* offset_align - Calculate the offset needed to align an object on its natural
*/
#define offset_align(align_drift, alignment) \
({ \
- BUILD_RUNTIME_BUG_ON((alignment) == 0 \
+ LTTNG_BUILD_RUNTIME_BUG_ON((alignment) == 0 \
|| ((alignment) & ((alignment) - 1))); \
(((alignment) - (align_drift)) & ((alignment) - 1)); \
})
*/
#define offset_align_floor(align_drift, alignment) \
({ \
- BUILD_RUNTIME_BUG_ON((alignment) == 0 \
+ LTTNG_BUILD_RUNTIME_BUG_ON((alignment) == 0 \
|| ((alignment) & ((alignment) - 1))); \
(((align_drift) - (alignment)) & ((alignment) - 1); \
})