std::this_thread::yield

 

C++

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Algoritmi

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Espressioni regolari(C++11)

Operazioni atomicche(C++11)

Multithreading(C++11)

 

Discussione libreria di supporto

Threads Original: Threads The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
thread (C++11)
this_thread spazio dei nomi Original: this_thread namespace The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
get_id (C++11) yield (C++11)	sleep_for (C++11) sleep_until (C++11)
Mutua esclusione Original: Mutual exclusion The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
mutex (C++11) timed_mutex (C++11)	recursive_mutex (C++11) recursive_timed_mutex (C++11)
Blocco di gestione generico Original: Generic lock management The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
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 Original: Condition variables The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
condition_variable (C++11)
condition_variable_any (C++11)
notify_all_at_thread_exit (C++11)
cv_status (C++11)
Futures Original: Futures The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
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)

 

Elemento definito nell'header <thread>
void yield();		(dal C++11)

Fornisce un suggerimento per l'attuazione di riprogrammare l'esecuzione dei thread, permettendo ad altri thread di eseguire.

Original:

Provides a hint to the implementation to reschedule the execution of threads, allowing other threads to run.

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Parametri

(Nessuno)

Original:

(none)

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Valore di ritorno

(Nessuno)

Original:

(none)

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Esempio

#include <iostream>#include <chrono>#include <thread>   // "busy sleep" while suggesting that other threads run // for a small amount of timevoid little_sleep(std::chrono::microseconds us){auto start = std::chrono::high_resolution_clock::now();auto end = start + us;do{ std::this_thread::yield();}while(std::chrono::high_resolution_clock::now()< end);}   int main(){auto start = std::chrono::high_resolution_clock::now();   little_sleep(std::chrono::microseconds(100));   auto elapsed = std::chrono::high_resolution_clock::now()- start;std::cout<<"waited for "<<std::chrono::duration_cast<std::chrono::microseconds>(elapsed).count()<<" microseconds\n";}

Possible output:

waited for 128 microseconds