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| author | Laszlo Ersek <lersek@redhat.com> | 2016-10-26 17:03:49 +0200 |
|---|---|---|
| committer | Laszlo Ersek <lersek@redhat.com> | 2016-10-27 10:50:07 +0200 |
| commit | c3ead528287db5ae779fc7ca00f935516d685c2a (patch) | |
| tree | 06a13e0aa7b89517f25a5a9235457fbe9398b376 /MdePkg | |
| parent | e101ddcf59917a6c2bafdf56e7293f3722c4a27d (diff) | |
| download | edk2-platforms-c3ead528287db5ae779fc7ca00f935516d685c2a.tar.xz | |
MdePkg/Include/Base.h: introduce the ARRAY_SIZE() function-like macro
Several modules use ARRAY_SIZE() already; centralize the definition. (The
module-specific macro definitions are guarded by #ifndef directives at
this point.)
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Cecil Sheng <cecil.sheng@hpe.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Dandan Bi <dandan.bi@intel.com>
Cc: Daryl McDaniel <edk2-lists@mc2research.org>
Cc: David Wei <david.wei@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Feng Tian <feng.tian@intel.com>
Cc: Gary Lin <glin@suse.com>
Cc: Jaben Carsey <jaben.carsey@intel.com>
Cc: Jeff Fan <jeff.fan@intel.com>
Cc: Jiaxin Wu <jiaxin.wu@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Siyuan Fu <siyuan.fu@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Tim He <tim.he@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Michael Kinney <michael.d.kinney@intel.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Diffstat (limited to 'MdePkg')
| -rw-r--r-- | MdePkg/Include/Base.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/MdePkg/Include/Base.h b/MdePkg/Include/Base.h index c666148464..82a773ae74 100644 --- a/MdePkg/Include/Base.h +++ b/MdePkg/Include/Base.h @@ -1211,5 +1211,18 @@ typedef UINTN RETURN_STATUS; #define RETURN_ADDRESS(L) ((VOID *) 0)
#endif
+/**
+ Return the number of elements in an array.
+
+ @param Array An object of array type. Array is only used as an argument to
+ the sizeof operator, therefore Array is never evaluated. The
+ caller is responsible for ensuring that Array's type is not
+ incomplete; that is, Array must have known constant size.
+
+ @return The number of elements in Array. The result has type UINTN.
+
+**/
+#define ARRAY_SIZE(Array) (sizeof (Array) / sizeof ((Array)[0]))
+
#endif
|