void detach(); | (since C++11) |
Separates the thread of execution from the thread object, allowing execution to continue independently. Any allocated resources will be freed once the thread exits.
After calling detach
*this
no longer owns any thread.
(none).
(none).
joinable
is false
.
std::system_error
if joinable() == false
or an error occurs.
#include <iostream> #include <chrono> #include <thread> void independentThread() { std::cout << "Starting concurrent thread.\n"; std::this_thread::sleep_for(std::chrono::seconds(2)); std::cout << "Exiting concurrent thread.\n"; } void threadCaller() { std::cout << "Starting thread caller.\n"; std::thread t(independentThread); t.detach(); std::this_thread::sleep_for(std::chrono::seconds(1)); std::cout << "Exiting thread caller.\n"; } int main() { threadCaller(); std::this_thread::sleep_for(std::chrono::seconds(5)); }
Possible output:
Starting thread caller. Starting concurrent thread. Exiting thread caller. Exiting concurrent thread.
waits for the thread to finish its execution (public member function) |
|
checks whether the thread is joinable, i.e. potentially running in parallel context (public member function) |
|
C documentation for thrd_detach |
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