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@@ -31,7 +31,7 @@ SpinLock::unlock("foo");
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给信号量 `$key` 上锁。如果该信号量已经被上锁,则立刻返回 false。
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给信号量 `$key` 上锁。如果该信号量已经被上锁,则立刻返回 false。
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```php
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```php
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SpinLock::lock("foo");
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SpinLock::trylock("foo");
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```
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```
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## 综合实例
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## 综合实例
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