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std::thread::native_handle

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< cpp‎ | thread‎ | thread

 
 
Tema Biblioteca de ayuda
Threads
Original:
Threads
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(C++11)
this_thread espacio de nombres
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this_thread namespace
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(C++11)
(C++11)
(C++11)
Exclusión mutua
Original:
Mutual exclusion
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(C++11)
Gestión de bloqueos genérico
Original:
Generic lock management
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(C++11)
(C++11)
(C++11)
(C++11)(C++11)(C++11)
Las variables de condición
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Condition variables
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(C++11)
Futuros
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Futures
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(C++11)
(C++11)
(C++11)
(C++11)
 
std::thread
Clases de miembros
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Member classes
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Las funciones miembro
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Member functions
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Los observadores
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Observers
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thread::native_handle
Operaciones
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Operations
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Terceros funciones
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Non-member functions
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native_handle_type native_handle();
(desde C++11)
Devuelve el identificador de subproceso definido aplicación subyacente .
Original:
Returns the implementation defined underlying thread handle.
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Contenido

[editar] Parámetros

(Ninguno)
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(none)
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[editar] Valor de retorno

aplicación tipo definido por el mango representa el hilo .
Original:
implementation defined handle type representing the thread.
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[editar] Excepciones

(Ninguno)
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(none)
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[editar] Ejemplo

Utiliza native_handle para habilitar la programación en tiempo real de C + + en un sistema de hilos 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();
}

Salida:

Thread 2 is executing at priority 0
Thread 1 is executing at priority 20