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std::jthrea...ative_handle(3) C++ Standard Libarystd::jthrea...ative_handle(3) NAME std::jthread::native_handle - std::jthread::native_handle Synopsis [[nodiscard]] native_handle_type native_handle(); (since C++20) (not always present) Returns the implementation defined underlying thread handle. Parameters (none) Return value implementation defined handle type representing the thread. Exceptions May throw implementation-defined exceptions. Example Uses native_handle to enable realtime scheduling of C++ threads on a POSIX system // Run this code #include <thread> #include <mutex> #include <iostream> #include <chrono> #include <cstring> #include <pthread.h> std::mutex iomutex; void f(int num) { std::this_thread::sleep_for(std::chrono::seconds(1)); sched_param sch; int policy; pthread_getschedparam(pthread_self(), &policy, &sch); std::lock_guard<std::mutex> lk(iomutex); std::cout << "Thread " << num << " is executing at priority " << sch.sched_priority << '\n'; } int main() { std::jthread t1(f, 1), t2(f, 2); sched_param sch; int policy; pthread_getschedparam(t1.native_handle(), &policy, &sch); sch.sched_priority = 20; if (pthread_setschedparam(t1.native_handle(), SCHED_FIFO, &sch)) { std::cout << "Failed to setschedparam: " << std::strerror(er- rno) << '\n'; } } Output: Thread 2 is executing at priority 0 Thread 1 is executing at priority 20 http://cppreference.com 2022.07.31 std::jthrea...ative_handle(3)
NAME | Synopsis | Parameters | Return value | Exceptions | Example | Output:
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