std::thread::native_handle
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<metanoindex/>
<tbody> </tbody> native_handle_type native_handle(); |
(depuis C++11) | |
Renvoie le handle de thread défini par l'implémentation sous-jacente .
Original:
Returns the implementation defined underlying thread handle.
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Paramètres
(Aucun)
Original:
(none)
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Retourne la valeur
mise en œuvre type défini poignée représentant le fil .
Original:
implementation defined handle type representing the thread.
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Exceptions
(Aucun)
Original:
(none)
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Exemple
Utilise native_handle pour activer la planification en temps réel de C + + threads sur un système POSIX
Original:
Uses native_handle to enable realtime scheduling of C++ threads on a POSIX system
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#include <thread>
#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::thread 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(errno) << '\n';
}
t1.join(); t2.join();
}
Résultat :
Thread 2 is executing at priority 0
Thread 1 is executing at priority 20