50 lines
1.4 KiB
Markdown
50 lines
1.4 KiB
Markdown
[futures.errors]
|
|
|
|
# 32 Concurrency support library [[thread]](./#thread)
|
|
|
|
## 32.10 Futures [[futures]](futures#errors)
|
|
|
|
### 32.10.3 Error handling [futures.errors]
|
|
|
|
[ð](#lib:future_category)
|
|
|
|
`const error_category& future_category() noexcept;
|
|
`
|
|
|
|
[1](#1)
|
|
|
|
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/threads.tex#L11226)
|
|
|
|
*Returns*: A reference to an object of a type derived from class error_category[.](#1.sentence-1)
|
|
|
|
[2](#2)
|
|
|
|
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/threads.tex#L11230)
|
|
|
|
The object's default_error_condition and equivalent virtual functions shall
|
|
behave as specified for the class error_category[.](#2.sentence-1)
|
|
|
|
The object's name virtual function returns a pointer to the string "future"[.](#2.sentence-2)
|
|
|
|
[ð](#lib:make_error_code,future_errc)
|
|
|
|
`error_code make_error_code(future_errc e) noexcept;
|
|
`
|
|
|
|
[3](#3)
|
|
|
|
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/threads.tex#L11242)
|
|
|
|
*Returns*: error_code(static_cast<int>(e), future_category())[.](#3.sentence-1)
|
|
|
|
[ð](#lib:make_error_condition,future_errc)
|
|
|
|
`error_condition make_error_condition(future_errc e) noexcept;
|
|
`
|
|
|
|
[4](#4)
|
|
|
|
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/threads.tex#L11253)
|
|
|
|
*Returns*: error_condition(static_cast<int>(e), future_category())[.](#4.sentence-1)
|