Namespace
Varianti

std::thread::native_handle

Da cppreference.com.
< cpp‎ | thread‎ | thread

 
 
Discussione libreria di supporto
Threads
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Threads
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thread(C++11)
this_thread spazio dei nomi
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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)
Mutua esclusione
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Mutual exclusion
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mutex(C++11)
timed_mutex(C++11)
Blocco di gestione generico
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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)
Condizioni variabili
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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
Membri classi
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Member classes
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thread::id
Membri funzioni
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Member functions
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thread::thread
thread::~thread
thread::operator=
Osservatori
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Observers
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thread::joinable
thread::get_id
thread::native_handle
thread::hardware_concurrency
Operazioni
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Operations
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thread::join
thread::detach
thread::swap
Non membri funzioni
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Non-member functions
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std::swap
 
native_handle_type native_handle();
(dal C++11)
Restituisce l'implementazione definita maniglia sottostante filo.
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Returns the implementation defined underlying thread handle.
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Indice

[modifica] Parametri

(Nessuno)
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(none)
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[modifica] Valore di ritorno

attuazione definito tipo di handle che rappresenta il filo.
Original:
implementation defined handle type representing the thread.
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[modifica] Eccezioni

(Nessuno)
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(none)
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[modifica] Esempio

Utilizza native_handle per abilitare la programmazione in tempo reale di C + + le discussioni su un sistema 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();
}

Output:

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