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# ReadWriteLock::WriteLock
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2026-03-26 20:59:59 +08:00
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以独占方式进入读写锁。
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2026-03-26 16:45:24 +08:00
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```cpp
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void WriteLock();
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```
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2026-03-26 20:59:59 +08:00
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## 行为说明
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2026-03-26 20:59:59 +08:00
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当前实现会：
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2026-03-26 16:45:24 +08:00
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2026-03-26 20:59:59 +08:00
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1. 拿内部互斥量。
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2. 先执行 `++m_writersWaiting`。
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3. 等待 `m_readers == 0 && !m_writerActive`。
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4. 条件满足后执行 `--m_writersWaiting` 并把 `m_writerActive = true`。
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2026-03-26 20:59:59 +08:00
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## 返回值
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- 无。
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2026-03-26 16:45:24 +08:00
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## 相关文档
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2026-03-26 20:59:59 +08:00
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- [返回类型总览](ReadWriteLock.md)
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- [WriteUnlock](WriteUnlock.md)
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- [ReadLock](ReadLock.md)
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