-#ifndef _BABELTRACE_ALIGN_H
-#define _BABELTRACE_ALIGN_H
-
/*
- * Copyright 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * 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:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
+ * SPDX-License-Identifier: MIT
*
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * Copyright 2010 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*/
+#ifndef _BABELTRACE_ALIGN_H
+#define _BABELTRACE_ALIGN_H
+
#include "compat/compiler.h"
#include "compat/limits.h"
-#define ALIGN(x, a) __ALIGN_MASK(x, (typeof(x))(a) - 1)
-#define __ALIGN_MASK(x, mask) (((x) + (mask)) & ~(mask))
-#define PTR_ALIGN(p, a) ((typeof(p)) ALIGN((unsigned long) (p), a))
-#define ALIGN_FLOOR(x, a) __ALIGN_FLOOR_MASK(x, (typeof(x)) (a) - 1)
-#define __ALIGN_FLOOR_MASK(x, mask) ((x) & ~(mask))
-#define PTR_ALIGN_FLOOR(p, a) \
- ((typeof(p)) ALIGN_FLOOR((unsigned long) (p), a))
-#define IS_ALIGNED(x, a) (((x) & ((typeof(x)) (a) - 1)) == 0)
-
-/*
- * 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)))
-
-/**
- * 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) \
- ({ \
- MAYBE_BUILD_BUG_ON((alignment) == 0 \
- || ((alignment) & ((alignment) - 1))); \
- (((alignment) - (align_drift)) & ((alignment) - 1)); \
- })
-
-/**
- * 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) \
- ({ \
- MAYBE_BUILD_BUG_ON((alignment) == 0 \
- || ((alignment) & ((alignment) - 1))); \
- (((align_drift) - (alignment)) & ((alignment) - 1)); \
- })
+#define BT_ALIGN(x, a) __BT_ALIGN_MASK(x, (__typeof__(x))(a) - 1)
+#define __BT_ALIGN_MASK(x, mask) (((x) + (mask)) & ~(mask))
+#define BT_PTR_ALIGN(p, a) ((__typeof__(p)) BT_ALIGN((unsigned long) (p), a))
+#define BT_ALIGN_FLOOR(x, a) __BT_ALIGN_FLOOR_MASK(x, (__typeof__(x)) (a) - 1)
+#define __BT_ALIGN_FLOOR_MASK(x, mask) ((x) & ~(mask))
+#define BT_PTR_ALIGN_FLOOR(p, a) \
+ ((__typeof__(p)) BT_ALIGN_FLOOR((unsigned long) (p), a))
+#define BT_IS_ALIGNED(x, a) (((x) & ((__typeof__(x)) (a) - 1)) == 0)
#endif /* _BABELTRACE_ALIGN_H */
projects / babeltrace.git / blobdiff