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std::condition_variable_any::notify_all

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C++
 
Biblioteca de suporte a discussão
Threads
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Threads
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(C++11)
this_thread namespace
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this_thread namespace
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(C++11)
(C++11)
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Exclusão mútua
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Mutual exclusion
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Gestão de bloqueio genérico
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Generic lock management
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(C++11)
(C++11)
(C++11)(C++11)(C++11)
(C++11)
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(C++11)(C++11)(C++11)
Variáveis ​​de condição
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Condition variables
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Futuros
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Futures
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std::condition_variable_any
Funções de membro
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Member functions
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condition_variable_any::condition_variable_any
condition_variable_any::~condition_variable_any
Notificação
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Notification
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condition_variable_any::notify_one
condition_variable_any::notify_all
Espera
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Waiting
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condition_variable_any::wait
condition_variable_any::wait_for
condition_variable_any::wait_until
 
void notify_all();
 (desde C++11)

Unblocks all threads currently waiting for *this.

Índice

[editar] Parâmetros

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

(Nenhum)
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(none)
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[editar] Exceções

noexcept specification:  
noexcept
  (desde C++11)

[editar] Exemplo

#include <iostream>
#include <condition_variable>
#include <thread>
#include <chrono>
 
std::condition_variable_any cv;
std::mutex cv_m;
int i = 0;
 
void waits()
{
    std::unique_lock<std::mutex> lk(cv_m);
    std::cerr << "Waiting... \n";
    cv.wait(lk, [](){return i == 1;});
    std::cerr << "...finished waiting. i == 1\n";
}
 
void signals()
{
    std::this_thread::sleep_for(std::chrono::seconds(1));
    std::cerr << "Notifying...\n";
    cv.notify_all();
    std::this_thread::sleep_for(std::chrono::seconds(1));
    i = 1;
    std::cerr << "Notifying again...\n";
    cv.notify_all();
}
 
int main()
{
    std::thread t1(waits), t2(waits), t3(waits), t4(signals);
    t1.join(); 
    t2.join(); 
    t3.join();
    t4.join();
}

Saída: 

Waiting...
Waiting...
Waiting...
Notifying...
Notifying again...
...finished waiting. i == 1
...finished waiting. i == 1
...finished waiting. i == 1

[editar] Veja também
notifica um segmento de espera
Original:
notifies one waiting thread
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(função pública membro) [edit]
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