ydb/library/cpp/yt/containers/unittests/sentinel_optional_ut.cpp, branch mainMirror of YDB github reposhttps://code.mastervirt.ru/ydb/atom?h=main2026-06-14T23:36:20ZAdd YT_DEFINE_SENTINEL_OPTIONAL macro2026-06-14T23:36:20Zbabenkobabenko@yandex-team.com2026-06-14T23:16:08Zurn:sha1:f8cd3660cc9c26e7dcbc92b9c226dece12649d90
Add a macro for defining `TSentinelOptional` type aliases when the value type is not structural (e.g. has protected members) and therefore cannot use `TValueSentinel<V>`. The macro collapses the boilerplate sentinel struct plus `using` declaration into a single line:
```cpp
// before
struct TInstantSentinel
{
static constexpr auto Sentinel = TInstant::Zero();
};
using TSentinelOptionalInstant = TSentinelOptional<TInstant, TInstantSentinel>;
// after
YT_DEFINE_SENTINEL_OPTIONAL(TSentinelOptionalInstant, TInstant, TInstant::Zero());
```
Also convert the existing call sites in `service_detail.cpp` and `inferrum/block_cache.cpp`.
commit_hash:5dcdeb8db215736b0ce5a5b71f30aead91c7b8e8
YT-27910: Make some more fields in TServiceContext atomic2026-04-12T11:03:33Zbabenkobabenko@yandex-team.com2026-04-12T10:31:27Zurn:sha1:2f678ac94fa0e9aeffde6130e9015786e7ea4ed3
commit_hash:24a87198c8fc53da983f9678679b990070e329b8