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Difference between revisions of "cpp/thread/never stop token"

From cppreference.com
< cpp‎ | thread
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The {{tt|never_stop_token}} class models {{tt|std::unstoppable_token}} that provides static information that a stop is never possible nor requested. It is the default stop token type returned by {{tt|std::get_stop_token}} if no other associated stop token is being provided in the queryable object.
+
The {{tt|never_stop_token}} class models {{lconcept|unstoppable_token}} that provides static information that a stop is never possible nor requested. It is the default stop token type returned by {{tt|std::get_stop_token}} if no other associated stop token is being provided in the queryable object.
  
 
===Member alias templates===
 
===Member alias templates===

Latest revision as of 17:04, 7 November 2024

 
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Defined in header <stop_token>
class never_stop_token;
 (since C++26)

The never_stop_token class models unstoppable_token that provides static information that a stop is never possible nor requested. It is the default stop token type returned by std::get_stop_token if no other associated stop token is being provided in the queryable object.

Contents

[edit] Member alias templates

Type Definition
callback_type<Callback> /*callback-type*/
where the type is defined as:
struct /*callback-type*/

{
    explicit /*callback-type*/( never_stop_token,
                                auto&& ) noexcept {}

};
 (exposition only*)

[edit] Member functions

stop_requested
[static]
 indicates that a stop can never be requested
(public static member function)
stop_possible
[static]
 indicates that a stop is not possible
(public static member function)
operator==
 compares two never_stop_token objects
(public member function)

std::never_stop_token::stop_requested

static constexpr bool stop_requested() noexcept { return false; }

Always returns false, indicating that a stop can never be requested.

std::never_stop_token::stop_possible

static constexpr bool stop_possible() noexcept { return false; }

Always returns false, indicating that a stop is not possible.

std::never_stop_token::operator==

bool operator==(const never_stop_token&) const = default;

Two never_stop_token objects always compare equal.

[edit] Example

This section is incomplete
Reason: no example
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