diff options
Diffstat (limited to 'third_party/abseil_cpp/absl/container/internal/raw_hash_set.cc')
-rw-r--r-- | third_party/abseil_cpp/absl/container/internal/raw_hash_set.cc | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/third_party/abseil_cpp/absl/container/internal/raw_hash_set.cc b/third_party/abseil_cpp/absl/container/internal/raw_hash_set.cc index 919ac0740573..bfef071f29e6 100644 --- a/third_party/abseil_cpp/absl/container/internal/raw_hash_set.cc +++ b/third_party/abseil_cpp/absl/container/internal/raw_hash_set.cc @@ -27,7 +27,7 @@ constexpr size_t Group::kWidth; // Returns "random" seed. inline size_t RandomSeed() { -#if ABSL_HAVE_THREAD_LOCAL +#ifdef ABSL_HAVE_THREAD_LOCAL static thread_local size_t counter = 0; size_t value = ++counter; #else // ABSL_HAVE_THREAD_LOCAL @@ -43,6 +43,19 @@ bool ShouldInsertBackwards(size_t hash, ctrl_t* ctrl) { return (H1(hash, ctrl) ^ RandomSeed()) % 13 > 6; } +void ConvertDeletedToEmptyAndFullToDeleted( + ctrl_t* ctrl, size_t capacity) { + assert(ctrl[capacity] == kSentinel); + assert(IsValidCapacity(capacity)); + for (ctrl_t* pos = ctrl; pos != ctrl + capacity + 1; pos += Group::kWidth) { + Group{pos}.ConvertSpecialToEmptyAndFullToDeleted(pos); + } + // Copy the cloned ctrl bytes. + std::memcpy(ctrl + capacity + 1, ctrl, Group::kWidth); + ctrl[capacity] = kSentinel; +} + + } // namespace container_internal ABSL_NAMESPACE_END } // namespace absl |