std::jthread::get_id
From cppreference.com
C++
Concurrency support library
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std::jthread
Member functions | ||||
Observers | ||||
jthread::get_id | ||||
Operations | ||||
Stop token handling | ||||
Non-member functions | ||||
std::
jthread
::
id get_id(
)
const
noexcept
;
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(since C++20) | |
Returns a value of std::jthread::id (which is a type alias for std::thread::id) identifying the thread associated with *this
Parameters
(none)
Return value
A value of type std::jthread::id identifying the thread associated with *this. If there is no thread associated, default constructed std::jthread::id
Example
Run this code
#include <chrono> #include <iostream> #include <thread> void foo() { std::this_thread::sleep_for(std::chrono::seconds(1)); } int main() { std::jthread t1(foo); std::jthread::id t1_id = t1.get_id(); std::jthread t2(foo); std::jthread::id t2_id = t2.get_id(); std::cout << "t1's id: " << t1_id << '\n'; std::cout << "t2's id: " << t2_id << '\n'; t1.join(); t2.join(); std::cout << "t1's id after join: " << t1.get_id() << '\n'; std::cout << "t2's id after join: " << t2.get_id() << '\n'; }
Possible output:
t1's id: 140146221688576 t2's id: 140146213295872 t1's id after join: thread::id of a non-executing thread t2's id after join: thread::id of a non-executing thread
See also
represents the id of a thread (public member class of std::thread ) |
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checks whether the thread is joinable, i.e. potentially running in parallel context (public member function) |