std::thread::join - cppreference.com

std::thread::join

Da cppreference.com.

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C++
 
Discussione libreria di supporto
Threads
Original:
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
 
<tbody> </tbody>
void join();
 (dal C++11)
Blocca il thread corrente finché il thread identificato da *this finisce la sua esecuzione.
Original:
Blocks the current thread until the thread identified by *this finishes its execution.
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Parametri

(Nessuno)
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(none)
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Valore di ritorno

(Nessuno)
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(none)
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Eccezioni

std::system_error se joinable() == false o si verifica un errore.
Original:
std::system_error if joinable() == false or an error occurs.
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Esempio

#include <iostream>
#include <thread>
#include <chrono>

void foo()
{
    // simulate expensive operation
    std::this_thread::sleep(std::chrono::seconds(1));
}

void bar()
{
    // simulate expensive operation
    std::this_thread::sleep(std::chrono::seconds(1));
}

int main()
{
    std::cout << "starting first helper...\n";
    std::thread helper1(foo);

    std::cout << "starting second helper...\n";
    std::thread helper2(bar);

    std::cout << "waiting for helpers to finish...\n";
    helper1.join();
    helper2.join();
 
    std::cout << "done!\n";
}

Output: 

starting first helper...
starting second helper...
waiting for helpers to finish...
done!

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