e96ae2203b
-- 074a799119ac881b8b8ce59ef7a3166d1aa025ac by Tom Manshreck <shreck@google.com>: nit: Add return info for StrCat PiperOrigin-RevId: 278647298 -- d58a2a39ab6f50266cc695506ba2e86bdb45d795 by Mark Barolak <mbar@google.com>: Stop suppressing no-nested-anon-types warnings because there aren't actually any warnings to suppress. PiperOrigin-RevId: 278440548 -- 445051bd280b9a6f608a8c80b3d7cafcc1377a03 by Abseil Team <absl-team@google.com>: ResetThreadIdentity does not need to clear identity->waiter_state. ResetThreadIdentity is only called by NewThreadIdentity. NewThreadIdentity is only called by CreateThreadIdentity. CreateThreadIdentity calls PerThreadSem::Init, which initializes identity->waiter_state, immediately after calling NewThreadIdentity. Therefore ResetThreadIdentity does not need to clear identity->waiter_state. PiperOrigin-RevId: 278429844 -- c2079b664d92be40d5e365abcca4e9b3505a75a6 by Abseil Team <absl-team@google.com>: Delete the f->header.magic check in LowLevelAlloc::Free(). The f->header.magic check in LowLevelAlloc::Free() is redundant, because AddToFreeList() will immediately perform the same check. Also fix a typo in the comment that documents the lock requirements for Next(). The comment should say "L >= arena->mu", which is equivalent to EXCLUSIVE_LOCKS_REQUIRED(arena->mu). NOTE: LowLevelAlloc::Free() performs the f->header.magic check without holding the arena lock. This may have caused the TSAN data race warning reported in bug 143697235. PiperOrigin-RevId: 278414140 -- 5534f35ce677165700117d868f51607ed1f0d73b by Greg Falcon <gfalcon@google.com>: Add an internal (unsupported) PiecewiseCombiner class to allow hashing buffers piecewise. PiperOrigin-RevId: 278388902 GitOrigin-RevId: 074a799119ac881b8b8ce59ef7a3166d1aa025ac Change-Id: I61734850cbbb01c7585e8c736a5bb56e416512a8
53 lines
2 KiB
C++
53 lines
2 KiB
C++
// Copyright 2018 The Abseil Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "absl/hash/internal/hash.h"
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namespace absl {
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namespace hash_internal {
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uint64_t CityHashState::CombineLargeContiguousImpl32(uint64_t state,
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const unsigned char* first,
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size_t len) {
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while (len >= PiecewiseChunkSize()) {
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state =
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Mix(state, absl::hash_internal::CityHash32(reinterpret_cast<const char*>(first),
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PiecewiseChunkSize()));
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len -= PiecewiseChunkSize();
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first += PiecewiseChunkSize();
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}
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// Handle the remainder.
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return CombineContiguousImpl(state, first, len,
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std::integral_constant<int, 4>{});
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}
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uint64_t CityHashState::CombineLargeContiguousImpl64(uint64_t state,
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const unsigned char* first,
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size_t len) {
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while (len >= PiecewiseChunkSize()) {
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state =
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Mix(state, absl::hash_internal::CityHash64(reinterpret_cast<const char*>(first),
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PiecewiseChunkSize()));
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len -= PiecewiseChunkSize();
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first += PiecewiseChunkSize();
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}
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// Handle the remainder.
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return CombineContiguousImpl(state, first, len,
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std::integral_constant<int, 8>{});
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}
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ABSL_CONST_INIT const void* const CityHashState::kSeed = &kSeed;
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} // namespace hash_internal
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} // namespace absl
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