[stoptoken.inplace.mem]

# 32 Concurrency support library [[thread]](./#thread)

## 32.3 Stop tokens [[thread.stoptoken]](thread.stoptoken#stoptoken.inplace.mem)

### 32.3.8 Class inplace_stop_token [[stoptoken.inplace]](stoptoken.inplace#mem)

#### 32.3.8.2 Member functions [stoptoken.inplace.mem]

[🔗](#itemdecl:1)

`void swap(inplace_stop_token& rhs) noexcept;
`

[1](#1)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/threads.tex#L1192)

*Effects*: Exchanges the values of *stop-source* and rhs.*stop-source*[.](#1.sentence-1)

[🔗](#itemdecl:2)

`bool stop_requested() const noexcept;
`

[2](#2)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/threads.tex#L1202)

*Effects*: Equivalent to:return *stop-source* != nullptr && *stop-source*->stop_requested();

[3](#3)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/threads.tex#L1209)

[*Note [1](#note-1)*:

As specified in [[basic.life]](basic.life "6.8.4 Lifetime"),
the behavior of stop_requested is undefined
unless the call strongly happens before the start of
the destructor of the associated inplace_stop_source object, if any[.](#3.sentence-1)

— *end note*]

[🔗](#itemdecl:3)

`stop_possible() const noexcept;
`

[4](#4)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/threads.tex#L1223)

*Returns*: *stop-source* != nullptr[.](#4.sentence-1)

[5](#5)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/threads.tex#L1227)

[*Note [2](#note-2)*:

As specified in [[basic.stc.general]](basic.stc.general "6.8.6.1 General"),
the behavior of stop_possible is implementation-defined
unless the call strongly happens before
the end of the storage duration of
the associated inplace_stop_source object, if any[.](#5.sentence-1)

— *end note*]