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    std::thread::native_handle

    Aus cppreference.com

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    <metanoindex/>

     
    C++
     
    Thema Support-Bibliothek
    Threads
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    Threads
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    thread(C++11)
    this_thread Namespace
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    this_thread namespace
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    get_id(C++11)
    yield(C++11)
    sleep_for(C++11)
    sleep_until(C++11)
    Gegenseitigen Ausschluss
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    Mutual exclusion
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    mutex(C++11)
    timed_mutex(C++11)
    Generische Sperrverwaltung
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    Generic lock management
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    lock_guard(C++11)
    unique_lock(C++11)
    defer_lock_t
    try_to_lock_t
    adopt_lock_t    		(C++11)
    (C++11)
    (C++11)
    lock(C++11)
    try_lock(C++11)
    defer_lock
    try_to_lock
    adopt_lock    		(C++11)
    (C++11)
    (C++11)
    Zustand Variablen
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    Condition variables
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    condition_variable(C++11)
    condition_variable_any(C++11)
    notify_all_at_thread_exit(C++11)
    cv_status(C++11)
    Futures
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    Futures
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    promise(C++11)
    future(C++11)
    shared_future(C++11)
    packaged_task(C++11)
    async(C++11)
    launch(C++11)
    future_status(C++11)
    future_error(C++11)
    future_category(C++11)
    future_errc(C++11)
     
    std::thread
    Mitglied Klassen
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    Member classes
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    thread::id
    Member-Funktionen
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    Member functions
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    thread::thread
    thread::~thread
    thread::operator=
    Beobachter
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    Observers
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    thread::joinable
    thread::get_id
    thread::native_handle
    thread::hardware_concurrency
    Operations
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    Operations
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    thread::join
    thread::detach
    thread::swap
    Non-Member-Funktionen
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    Non-member functions
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    std::swap
     
    <tbody> </tbody>
    native_handle_type native_handle();
    		 (seit C++11)
    Gibt die Umsetzung zugrunde liegenden Thread-Handle definiert .
    Original:
    Returns the implementation defined underlying thread handle.
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    Parameter

    (None)
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    (none)
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    Rückgabewert

    Implementierung definiert Griff Typ, der den Faden .
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    implementation defined handle type representing the thread.
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    Ausnahmen

    (None)
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    (none)
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    Beispiel

    Verwendet native_handle um Echtzeit Scheduling von C + + Threads auf einem POSIX-System zu ermöglichen
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    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();
}

    Output: 

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