12bc53e031
-- c99f979ad34f155fbeeea69b88bdc7458d89a21c by Derek Mauro <dmauro@google.com>: Remove a floating point division by zero test. This isn't testing behavior related to the library, and MSVC warns about it in opt mode. PiperOrigin-RevId: 285220804 -- 68b015491f0dbf1ab547994673281abd1f34cd4b by Gennadiy Rozental <rogeeff@google.com>: This CL introduces following changes to the class FlagImpl: * We eliminate the CommandLineFlagLocks struct. Instead callback guard and callback function are combined into a single CallbackData struct, while primary data lock is stored separately. * CallbackData member of class FlagImpl is initially set to be nullptr and is only allocated and initialized when a flag's callback is being set. For most flags we do not pay for the extra space and extra absl::Mutex now. * Primary data guard is stored in data_guard_ data member. This is a properly aligned character buffer of necessary size. During initialization of the flag we construct absl::Mutex in this space using placement new call. * We now avoid extra value copy after successful attempt to parse value out of string. Instead we swap flag's current value with tentative value we just produced. PiperOrigin-RevId: 285132636 -- ed45d118fb818969eb13094cf7827c885dfc562c by Tom Manshreck <shreck@google.com>: Change null-term* (and nul-term*) to NUL-term* in comments PiperOrigin-RevId: 285036610 -- 729619017944db895ce8d6d29c1995aa2e5628a5 by Derek Mauro <dmauro@google.com>: Use the Posix implementation of thread identity on MinGW. Some versions of MinGW suffer from thread_local bugs. PiperOrigin-RevId: 285022920 -- 39a25493503c76885bc3254c28f66a251c5b5bb0 by Greg Falcon <gfalcon@google.com>: Implementation detail change. Add further ABSL_NAMESPACE_BEGIN and _END annotation macros to files in Abseil. PiperOrigin-RevId: 285012012 GitOrigin-RevId: c99f979ad34f155fbeeea69b88bdc7458d89a21c Change-Id: I4c85d3704e45d11a9ac50d562f39640a6adbedc1
74 lines
2 KiB
C++
74 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/container/internal/hash_generator_testing.h"
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#include <deque>
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namespace absl {
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ABSL_NAMESPACE_BEGIN
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namespace container_internal {
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namespace hash_internal {
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namespace {
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class RandomDeviceSeedSeq {
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public:
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using result_type = typename std::random_device::result_type;
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template <class Iterator>
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void generate(Iterator start, Iterator end) {
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while (start != end) {
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*start = gen_();
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++start;
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}
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}
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private:
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std::random_device gen_;
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};
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} // namespace
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std::mt19937_64* GetSharedRng() {
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RandomDeviceSeedSeq seed_seq;
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static auto* rng = new std::mt19937_64(seed_seq);
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return rng;
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}
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std::string Generator<std::string>::operator()() const {
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// NOLINTNEXTLINE(runtime/int)
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std::uniform_int_distribution<short> chars(0x20, 0x7E);
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std::string res;
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res.resize(32);
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std::generate(res.begin(), res.end(),
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[&]() { return chars(*GetSharedRng()); });
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return res;
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}
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absl::string_view Generator<absl::string_view>::operator()() const {
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static auto* arena = new std::deque<std::string>();
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// NOLINTNEXTLINE(runtime/int)
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std::uniform_int_distribution<short> chars(0x20, 0x7E);
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arena->emplace_back();
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auto& res = arena->back();
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res.resize(32);
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std::generate(res.begin(), res.end(),
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[&]() { return chars(*GetSharedRng()); });
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return res;
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}
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} // namespace hash_internal
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} // namespace container_internal
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ABSL_NAMESPACE_END
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} // namespace absl
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