From: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Date: Tue, 17 Oct 2017 21:18:36 +0000 (-0400)
Subject: Add ALIGN_TO util to macros.h
X-Git-Tag: v2.11.0-rc1~102
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=eac6ee118d39b8fd835c9afa1a1e2b6ff70c7eb6;p=lttng-tools.git

Add ALIGN_TO util to macros.h

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
---

diff --git a/src/common/macros.h b/src/common/macros.h
index 28c21d5b8..33ada7321 100644
--- a/src/common/macros.h
+++ b/src/common/macros.h
@@ -83,6 +83,12 @@ void *zmalloc(size_t len)
 #define LTTNG_PACKED __attribute__((__packed__))
 #endif
 
+/*
+ * Align value to the next multiple of align. Returns val if it already is a
+ * multiple of align. Align must be a power of two.
+ */
+#define ALIGN_TO(value, align) ((value + (align - 1)) & ~(align - 1))
+
 /*
  * LTTNG_HIDDEN: set the hidden attribute for internal functions
  * On Windows, symbols are local unless explicitly exported,