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| author | Steven Moreland <smoreland@google.com> | 2019-11-06 16:32:08 -0800 |
|---|---|---|
| committer | android-build-merger <android-build-merger@google.com> | 2019-11-06 16:32:08 -0800 |
| commit | 81303e4c8f3889857925d4253a8a134d088a13a0 (patch) | |
| tree | 3009c6e673e423dcc11109897f7f26c11ce8c966 | |
| parent | aebebeb92311f9867200238835eb0aced259a8b7 (diff) | |
| parent | 80965d4ee9447fd3133a7f160638f7e0940e193e (diff) | |
| download | core-81303e4c8f3889857925d4253a8a134d088a13a0.tar.gz | |
FlattenableUtils::align memsets am: e62a9d7669 am: 59e7d4e8ea am: 3f273f49f1 am: f7724dfcfb am: 4392bca7f7
am: 80965d4ee9
Change-Id: Ic58551fdd717a31b71831dfe1c39a970700edf7c
| -rw-r--r-- | libutils/include/utils/Flattenable.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/libutils/include/utils/Flattenable.h b/libutils/include/utils/Flattenable.h index 9d006023d..2c4b8075d 100644 --- a/libutils/include/utils/Flattenable.h +++ b/libutils/include/utils/Flattenable.h @@ -47,7 +47,12 @@ public: 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) { |