diff options
Diffstat (limited to 'absl/container/internal')
-rw-r--r-- | absl/container/internal/raw_hash_set.cc | 13 | ||||
-rw-r--r-- | absl/container/internal/raw_hash_set.h | 20 |
2 files changed, 20 insertions, 13 deletions
diff --git a/absl/container/internal/raw_hash_set.cc b/absl/container/internal/raw_hash_set.cc index 2f744a6e..bfef071f 100644 --- a/absl/container/internal/raw_hash_set.cc +++ b/absl/container/internal/raw_hash_set.cc @@ -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 diff --git a/absl/container/internal/raw_hash_set.h b/absl/container/internal/raw_hash_set.h index 67364b75..5fbe56b9 100644 --- a/absl/container/internal/raw_hash_set.h +++ b/absl/container/internal/raw_hash_set.h @@ -472,17 +472,7 @@ inline bool IsValidCapacity(size_t n) { return ((n + 1) & n) == 0 && n > 0; } // DELETED -> EMPTY // EMPTY -> EMPTY // FULL -> DELETED -inline 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; -} +void ConvertDeletedToEmptyAndFullToDeleted(ctrl_t* ctrl, size_t capacity); // Rounds up the capacity to the next power of 2 minus 1, with a minimum of 1. inline size_t NormalizeCapacity(size_t n) { @@ -750,7 +740,6 @@ class raw_hash_set { : ctrl_(EmptyGroup()), settings_(0, hash, eq, alloc) { if (bucket_count) { capacity_ = NormalizeCapacity(bucket_count); - reset_growth_left(); initialize_slots(); } } @@ -1278,7 +1267,12 @@ class raw_hash_set { } } - void reserve(size_t n) { rehash(GrowthToLowerboundCapacity(n)); } + void reserve(size_t n) { + size_t m = GrowthToLowerboundCapacity(n); + if (m > capacity_) { + resize(NormalizeCapacity(m)); + } + } // Extension API: support for heterogeneous keys. // |