support SharedMutex. #1975
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support SharedMutex. #1975
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related: #1031 |
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CI is failed |
liyichao
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@wwbmmm I have fixed the build, the CI failure seems unrelated to this patch, please help check it. |
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@guodongxiaren Please help to see this CI failure, the error is so strange. |
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@wwbmmm I have merged master, the workflows need approval |
wwbmmm
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Dec 2, 2022
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wwbmmm
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Dec 6, 2022
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| static constexpr int32_t max_readers = 1 << 30; | ||
| Mutex _w; | ||
| uint32_t* _writer_butex; |
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改成butil::atomic<uint32_t>*，保证操作的内存序
| static constexpr int32_t max_readers = 1 << 30; | ||
| Mutex _w; | ||
| uint32_t* _writer_butex; | ||
| uint32_t* _reader_butex; |
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建议补充单测 |
chenzhangyi
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Feb 17, 2023
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support SharedMutex that is compatible with c++17 std::shared_mutex. This patch uses existing class Mutex, and is migrated from golang, see https://github.com/golang/go/blob/master/src/sync/rwmutex.go