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@@ -93,7 +93,9 @@ jobs: | |
| with: | ||
| fetch-depth: 0 | ||
| submodules: recursive | ||
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| - name: Add msbuild to PATH | ||
| if: ${{ matrix.os == 'windows-latest'}} | ||
| uses: microsoft/[email protected] | ||
| - name: Set up conda ${{ matrix.python-version }} | ||
| uses: conda-incubator/setup-miniconda@v2 | ||
| if: ${{ matrix.module != 'gpu' }} | ||
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| @@ -0,0 +1,110 @@ | ||
| /* Copyright 2022-2023 XProbe Inc. | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. */ | ||
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| #pragma once | ||
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| #include <atomic> | ||
| #include <functional> | ||
| #include <memory> | ||
| #include <mutex> | ||
| #include <thread> | ||
| #include <utility> | ||
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| #if defined(__GNUC__) || defined(__ICL) || defined(__clang__) | ||
| # ifndef XOSCAR_LIKELY | ||
| # define XOSCAR_LIKELY(expr) \ | ||
| (__builtin_expect(static_cast<bool>(expr), 1)) | ||
| # define XOSCAR_UNLIKELY(expr) \ | ||
| (__builtin_expect(static_cast<bool>(expr), 0)) | ||
| # endif | ||
| #else | ||
| # ifndef XOSCAR_LIKELY | ||
| # define XOSCAR_LIKELY(expr) (expr) | ||
| # define XOSCAR_UNLIKELY(expr) (expr) | ||
| # endif | ||
| #endif | ||
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| namespace xoscar { | ||
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| template <typename F, typename... args> | ||
| #if defined(__cpp_lib_is_invocable) && __cpp_lib_is_invocable >= 201703L | ||
| using invoke_result = typename std::invoke_result<F, args...>; | ||
| #else | ||
| using invoke_result = typename std::result_of<F && (args && ...)>; | ||
| #endif | ||
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| template <typename F, typename... args> | ||
| using invoke_result_t = typename invoke_result<F, args...>::type; | ||
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| template <typename Functor, typename... Args> | ||
| typename std::enable_if< | ||
| std::is_member_pointer<typename std::decay<Functor>::type>::value, | ||
| typename xoscar::invoke_result_t<Functor, Args...>>::type | ||
| invoke(Functor &&f, Args &&...args) { | ||
| return std::mem_fn(std::forward<Functor>(f))(std::forward<Args>(args)...); | ||
| } | ||
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| template <typename Functor, typename... Args> | ||
| typename std::enable_if< | ||
| !std::is_member_pointer<typename std::decay<Functor>::type>::value, | ||
| typename xoscar::invoke_result_t<Functor, Args...>>::type | ||
| invoke(Functor &&f, Args &&...args) { | ||
| return std::forward<Functor>(f)(std::forward<Args>(args)...); | ||
| } | ||
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| // custom xoscar call_once implementation to avoid the deadlock in | ||
| // std::call_once. The implementation here is a simplified version from folly | ||
| // and likely much much higher memory footprint. | ||
| template <typename Flag, typename F, typename... Args> | ||
| inline void call_once(Flag &flag, F &&f, Args &&...args) { | ||
| if (XOSCAR_LIKELY(flag.test_once())) { | ||
| return; | ||
| } | ||
| flag.call_once_slow(std::forward<F>(f), std::forward<Args>(args)...); | ||
| } | ||
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| class once_flag { | ||
| public: | ||
| #ifndef _WIN32 | ||
| constexpr | ||
| #endif | ||
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| once_flag() noexcept = default; | ||
| once_flag(const once_flag &) = delete; | ||
| once_flag &operator=(const once_flag &) = delete; | ||
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| private: | ||
| template <typename Flag, typename F, typename... Args> | ||
| friend void call_once(Flag &flag, F &&f, Args &&...args); | ||
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| template <typename F, typename... Args> | ||
| void call_once_slow(F &&f, Args &&...args) { | ||
| std::lock_guard<std::mutex> guard(mutex_); | ||
| if (init_.load(std::memory_order_relaxed)) { | ||
| return; | ||
| } | ||
| invoke(f, std::forward<Args>(args)...); | ||
| init_.store(true, std::memory_order_release); | ||
| } | ||
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| bool test_once() { return init_.load(std::memory_order_acquire); } | ||
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| void reset_once() { init_.store(false, std::memory_order_release); } | ||
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| private: | ||
| std::mutex mutex_; | ||
| std::atomic<bool> init_{false}; | ||
| }; | ||
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| } // namespace xoscar |
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