tmp/tmpwo65d3qj/{from.md → to.md}
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#### General <a id="stoptoken.general">[[stoptoken.general]]</a>
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The class `stop_token` provides an interface for querying whether a stop
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request has been made (`stop_requested`) or can ever be made
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(`stop_possible`) using an associated `stop_source` object
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[[stopsource]]. A `stop_token` can also be passed to a `stop_callback`
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[[stopcallback]] constructor to register a callback to be called when a
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stop request has been made from an associated `stop_source`.
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``` cpp
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namespace std {
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class stop_token {
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public:
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// [stoptoken.cons], constructors, copy, and assignment
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stop_token() noexcept;
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stop_token(const stop_token&) noexcept;
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stop_token(stop_token&&) noexcept;
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stop_token& operator=(const stop_token&) noexcept;
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stop_token& operator=(stop_token&&) noexcept;
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~stop_token();
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void swap(stop_token&) noexcept;
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// [stoptoken.mem], stop handling
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[[nodiscard]] bool stop_requested() const noexcept;
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[[nodiscard]] bool stop_possible() const noexcept;
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[[nodiscard]] friend bool operator==(const stop_token& lhs, const stop_token& rhs) noexcept;
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friend void swap(stop_token& lhs, stop_token& rhs) noexcept;
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};
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}
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```
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