| (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.
Parameters
(none).
Return value
(none).
Postconditions
joinable is false.
Exceptions
std::system_error if joinable() == false or an error occurs.
Example
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 | #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:
1 2 3 4 | Starting thread caller.Starting concurrent thread.Exiting thread caller.Exiting concurrent thread. |
See also
| waits for a thread to finish its execution (public member function) | |
| checks whether the thread is joinable, i.e. potentially running in parallel context (public member function) |
References
- C++11 standard (ISO/IEC 14882:2011):
- 30.3.1.5 thread members [thread.thread.member]
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