Espacios de nombres
Variantes
Acciones

std::unique_lock::lock

De cppreference.com
< cpp‎ | thread‎ | unique lock

 
 
Tema Biblioteca de ayuda
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.
(C++11)
this_thread espacio de nombres
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.
(C++11)
(C++11)
(C++11)
Exclusión mutua
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.
(C++11)
Gestión de bloqueos genérico
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.
(C++11)
(C++11)
(C++11)
(C++11)(C++11)(C++11)
Las variables de condición
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.
(C++11)
Futuros
Original:
Futures
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
(C++11)
(C++11)
(C++11)
(C++11)
 
std::unique_lock
Las funciones miembro
Original:
Member functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Bloqueo
Original:
Locking
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
unique_lock::lock
Modificadores
Original:
Modifiers
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Los observadores
Original:
Observers
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Terceros funciones
Original:
Non-member functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
 
void lock();
(desde C++11)
Bloquea el mutex asociado. Efectivamente llama mutex()->lock() .
Original:
Locks the associated mutex. Effectively calls mutex()->lock().
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
std::system_error se produce si no hay mutex asociada o si el mutex está bloqueado ya .
Original:
std::system_error is thrown if there is no associated mutex or if the mutex is already locked.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Contenido

[editar] Parámetros

(Ninguno)
Original:
(none)
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

[editar] Valor de retorno

(Ninguno)
Original:
(none)
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

[editar] Excepciones

  • Cualquier excepción lanzada por mutex()->lock()
    Original:
    Any exceptions thrown by mutex()->lock()
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

[editar] Ejemplo

El ejemplo siguiente utiliza lock para volver a adquirir un mutex que estaba cerrada con llave .
Original:
The following example uses lock to re-acquire a mutex that was unlocked.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

#include <mutex>
#include <thread>
#include <iostream>
#include <vector>
#include <chrono>
 
int main()
{
    int counter = 0;
    std::mutex counter_mutex;
    std::vector<std::thread> threads;
 
    auto worker_task = [&](int id) {
        std::unique_lock<std::mutex> lock(counter_mutex);
        ++counter;
        std::cout << id << ", initial counter: " << counter << '\n';
        lock.unlock();
 
        // don't hold the lock while we simulate an expensive operation
        std::this_thread::sleep_for(std::chrono::seconds(1));
 
        lock.lock();
        ++counter;
        std::cout << id << ", final counter: " << counter << '\n';
    };
 
    for (int i = 0; i < 10; ++i) threads.emplace_back(worker_task, i);
 
    for (auto &thread : threads) thread.join();
}

Posible salida:

0, initial counter: 1
1, initial counter: 2
2, initial counter: 3
3, initial counter: 4
4, initial counter: 5
5, initial counter: 6
6, initial counter: 7
7, initial counter: 8
8, initial counter: 9
9, initial counter: 10
6, final counter: 11
3, final counter: 12
4, final counter: 13
2, final counter: 14
5, final counter: 15
0, final counter: 16
1, final counter: 17
7, final counter: 18
9, final counter: 19
8, final counter: 20

[editar] Ver también

intenta bloquear el mutex asociado, devoluciones si el mutex no está disponible
Original:
tries to lock the associated mutex, returns if the mutex is not available
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(función miembro público) [editar]
desbloquea el mutex asociado
Original:
unlocks the associated mutex
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(función miembro público) [editar]