Commit: 1f9fe0626fc0f6de449b62d88763faf8290e93b5
Author: Campbell Barton
Date: Tue Apr 28 21:14:46 2015 +1000
Branches: master
https://developer.blender.org/rB1f9fe0626fc0f6de449b62d88763faf8290e93b5
BLI_utildefines: add MEMSET_STRUCT_OFS macro
===================================================================
M source/blender/blenlib/BLI_utildefines.h
===================================================================
diff --git a/source/blender/blenlib/BLI_utildefines.h
b/source/blender/blenlib/BLI_utildefines.h
index 2ddc8fa..d817aa9 100644
--- a/source/blender/blenlib/BLI_utildefines.h
+++ b/source/blender/blenlib/BLI_utildefines.h
@@ -493,8 +493,11 @@ extern "C" {
#define OFFSETOF_STRUCT(_struct, _member) \
((((char *)&((_struct)->_member)) - ((char *)(_struct))) +
sizeof((_struct)->_member))
-/* memcpy, skipping the first part of a struct,
- * ensures 'struct_dst' isn't const and that the offset can be computed at
compile time */
+/**
+ * memcpy helper, skipping the first part of a struct,
+ * ensures 'struct_dst' isn't const and the offset can be computed at compile
time.
+ * This isn't inclusive, the value of \a member isn't copied.
+ */
#define MEMCPY_STRUCT_OFS(struct_dst, struct_src, member) { \
CHECK_TYPE_NONCONST(struct_dst); \
((void)(struct_dst == struct_src), \
@@ -503,6 +506,13 @@ extern "C" {
sizeof(*(struct_dst)) - OFFSETOF_STRUCT(struct_dst, member))); \
} (void)0
+#define MEMSET_STRUCT_OFS(struct_var, value, member) { \
+ CHECK_TYPE_NONCONST(struct_var); \
+ memset((char *)(struct_var) + OFFSETOF_STRUCT(struct_var, member), \
+ value, \
+ sizeof(*(struct_var)) - OFFSETOF_STRUCT(struct_var, member)); \
+} (void)0
+
/* Warning-free macros for storing ints in pointers. Use these _only_
* for storing an int in a pointer, not a pointer in an int (64bit)! */
#define SET_INT_IN_POINTER(i) ((void *)(intptr_t)(i))
_______________________________________________
Bf-blender-cvs mailing list
[email protected]
http://lists.blender.org/mailman/listinfo/bf-blender-cvs
