FlattenableUtils::align memsets am: e62a9d7669 am: 59e7d4e8ea am: 3f273f49f1 am: f7724dfcfb am: 4392bca7f7
am: 80965d4ee9
Change-Id: Ic58551fdd717a31b71831dfe1c39a970700edf7c
diff --git a/libutils/include/utils/Flattenable.h b/libutils/include/utils/Flattenable.h
index 9d00602..2c4b807 100644
--- a/libutils/include/utils/Flattenable.h
+++ b/libutils/include/utils/Flattenable.h
@@ -47,7 +47,12 @@
template<size_t N>
static size_t align(void*& buffer) {
- return align<N>( const_cast<void const*&>(buffer) );
+ static_assert(!(N & (N - 1)), "Can only align to a power of 2.");
+ void* b = buffer;
+ buffer = reinterpret_cast<void*>((uintptr_t(buffer) + (N-1)) & ~(N-1));
+ size_t delta = size_t(uintptr_t(buffer) - uintptr_t(b));
+ memset(b, 0, delta);
+ return delta;
}
static void advance(void*& buffer, size_t& size, size_t offset) {
