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author | Evan Brown <ezb@google.com> | 2023-10-17 12:30:58 -0700 |
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committer | Copybara-Service <copybara-worker@google.com> | 2023-10-17 12:31:55 -0700 |
commit | 7676c565eedd2581b66839c239f3825d8e381119 (patch) | |
tree | 8d64dc6f9771724736e1144c1af6a3255e441f52 /absl/container/internal/raw_hash_set.h | |
parent | b87875aa079571a3aa8829d61538672d88657566 (diff) | |
download | abseil-7676c565eedd2581b66839c239f3825d8e381119.tar.gz abseil-7676c565eedd2581b66839c239f3825d8e381119.tar.bz2 abseil-7676c565eedd2581b66839c239f3825d8e381119.zip |
Rollback: Add sanitizer mode checks that element constructors/destructors don't make reentrant calls to raw_hash_set member functions.
PiperOrigin-RevId: 574232718
Change-Id: I8ef25fec00b76ee5fb9424e7614ca55edd6ba81b
Diffstat (limited to 'absl/container/internal/raw_hash_set.h')
-rw-r--r-- | absl/container/internal/raw_hash_set.h | 39 |
1 files changed, 12 insertions, 27 deletions
diff --git a/absl/container/internal/raw_hash_set.h b/absl/container/internal/raw_hash_set.h index 67964f54..a8fd80ca 100644 --- a/absl/container/internal/raw_hash_set.h +++ b/absl/container/internal/raw_hash_set.h @@ -2143,7 +2143,7 @@ class raw_hash_set { alignas(slot_type) unsigned char raw[sizeof(slot_type)]; slot_type* slot = reinterpret_cast<slot_type*>(&raw); - construct(slot, std::forward<Args>(args)...); + PolicyTraits::construct(&alloc_ref(), slot, std::forward<Args>(args)...); const auto& elem = PolicyTraits::element(slot); return PolicyTraits::apply(InsertSlot<true>{*this, std::move(*slot)}, elem); } @@ -2248,7 +2248,7 @@ class raw_hash_set { // a better match if non-const iterator is passed as an argument. void erase(iterator it) { AssertIsFull(it.ctrl_, it.generation(), it.generation_ptr(), "erase()"); - destroy(it.slot_); + PolicyTraits::destroy(&alloc_ref(), it.slot_); erase_meta_only(it); } @@ -2541,9 +2541,10 @@ class raw_hash_set { std::pair<iterator, bool> operator()(const K& key, Args&&...) && { auto res = s.find_or_prepare_insert(key); if (res.second) { - s.transfer(s.slot_array() + res.first, &slot); + PolicyTraits::transfer(&s.alloc_ref(), s.slot_array() + res.first, + &slot); } else if (do_destroy) { - s.destroy(&slot); + PolicyTraits::destroy(&s.alloc_ref(), &slot); } return {s.iterator_at(res.first), res.second}; } @@ -2552,31 +2553,13 @@ class raw_hash_set { slot_type&& slot; }; - // Helpers to enable sanitizer mode validation to protect against reentrant - // calls during element constructor/destructor. - template <typename... Args> - inline void construct(slot_type* slot, Args&&... args) { - RunWithReentrancyGuard(*this, alloc_ref(), [&] { - PolicyTraits::construct(&alloc_ref(), slot, std::forward<Args>(args)...); - }); - } - inline void destroy(slot_type* slot) { - RunWithReentrancyGuard(*this, alloc_ref(), - [&] { PolicyTraits::destroy(&alloc_ref(), slot); }); - } - inline void transfer(slot_type* to, slot_type* from) { - RunWithReentrancyGuard(*this, alloc_ref(), [&] { - PolicyTraits::transfer(&alloc_ref(), to, from); - }); - } - inline void destroy_slots() { const size_t cap = capacity(); const ctrl_t* ctrl = control(); slot_type* slot = slot_array(); for (size_t i = 0; i != cap; ++i) { if (IsFull(ctrl[i])) { - destroy(slot + i); + PolicyTraits::destroy(&alloc_ref(), slot + i); } } } @@ -2639,7 +2622,7 @@ class raw_hash_set { size_t new_i = target.offset; total_probe_length += target.probe_length; SetCtrl(common(), new_i, H2(hash), sizeof(slot_type)); - transfer(new_slots + new_i, old_slots + i); + PolicyTraits::transfer(&alloc_ref(), new_slots + new_i, old_slots + i); } } if (old_capacity) { @@ -2742,7 +2725,7 @@ class raw_hash_set { reserve(size); for (iterator it = that.begin(); it != that.end(); ++it) { insert(std::move(PolicyTraits::element(it.slot_))); - that.destroy(it.slot_); + PolicyTraits::destroy(&that.alloc_ref(), it.slot_); } that.dealloc(); that.common() = CommonFields{}; @@ -2833,7 +2816,8 @@ class raw_hash_set { // POSTCONDITION: *m.iterator_at(i) == value_type(forward<Args>(args)...). template <class... Args> void emplace_at(size_t i, Args&&... args) { - construct(slot_array() + i, std::forward<Args>(args)...); + PolicyTraits::construct(&alloc_ref(), slot_array() + i, + std::forward<Args>(args)...); assert(PolicyTraits::apply(FindElement{*this}, *iterator_at(i)) == iterator_at(i) && @@ -2899,7 +2883,8 @@ class raw_hash_set { } static void transfer_slot_fn(void* set, void* dst, void* src) { auto* h = static_cast<raw_hash_set*>(set); - h->transfer(static_cast<slot_type*>(dst), static_cast<slot_type*>(src)); + PolicyTraits::transfer(&h->alloc_ref(), static_cast<slot_type*>(dst), + static_cast<slot_type*>(src)); } // Note: dealloc_fn will only be used if we have a non-standard allocator. static void dealloc_fn(CommonFields& common, const PolicyFunctions&) { |