Namensräume
Varianten
Aktionen

std::unique_lock

Aus cppreference.com
< cpp‎ | thread

 
 
Thema Support-Bibliothek
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 Namespace
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)
Gegenseitigen Ausschluss
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)
Generische Sperrverwaltung
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)
Zustand Variablen
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)
 
std::unique_lock
Member-Funktionen
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.
unique_lock::unique_lock
unique_lock::~unique_lock
unique_lock::operator=
Sperren
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
unique_lock::try_lock
unique_lock::try_lock_for
unique_lock::try_lock_until
unique_lock::unlock
Modifiers
Original:
Modifiers
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
unique_lock::swap
unique_lock::release
Beobachter
Original:
Observers
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
unique_lock::mutex
unique_lock::owns_lock
unique_lock::operator bool
Non-Member-Funktionen
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.
std::swap
 
Defined in header <mutex>
template< class Mutex >
class unique_lock;
(seit C++11)
Die Klasse unique_lock ist ein Allzweck-Mutex Eigentum Wrapper ermöglicht latenten Verriegelung, zeitgesteuerte Verriegelung, rekursive Verriegelung, die Übertragung von Schloss Eigentum, und die Verwendung mit Zustandsgrößen .
Original:
The class unique_lock is a general-purpose mutex ownership wrapper allowing deferred locking, timed locking, recursive locking, transfer of lock ownership, and use with condition variables.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Die unique_lock Klasse ist nicht kopierbar, aber es ist beweglich. Die mitgelieferte Mutex Art führt den BasicLockable Konzept .
Original:
The unique_lock class is non-copyable, but it is movable. The supplied Mutex type shall implement the BasicLockable concept.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Inhaltsverzeichnis

[Bearbeiten] Mitglied Typen

Type
Original:
Type
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Definition
mutex_type Mutex

[Bearbeiten] Member-Funktionen

konstruiert eine unique_lock, wahlweise Verriegelung der mitgelieferten Mutex
Original:
constructs a unique_lock, optionally locking the supplied mutex
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(öffentliche Elementfunktion) [edit]
entriegelt die zugehörige Mutex, wenn Besitz
Original:
unlocks the associated mutex, if owned
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(öffentliche Elementfunktion) [edit]
das Mutex wieder aufgehoben, wenn Besitz und erwirbt Eigentum eines anderen
Original:
unlocks the mutex, if owned, and acquires ownership of another
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(öffentliche Elementfunktion) [edit]
Sperren
Original:
Locking
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
locks the associated mutex
(öffentliche Elementfunktion) [edit]
versucht, die zugehörige Mutex sperren, kehrt zurück, wenn der Mutex ist nicht verfügbar
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.

(öffentliche Elementfunktion) [edit]
Versuche, die damit verbundenen TimedLockable Mutex wieder sperren, wenn der Mutex wurde für die angegebene Zeitdauer nicht verfügbar
Original:
attempts to lock the associated TimedLockable mutex, returns if the mutex has been unavailable for the specified time duration
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(öffentliche Elementfunktion) [edit]
versucht, die zugehörige TimedLockable Mutex wieder sperren, wenn der Mutex ist nicht verfügbar, bis angegebenen Zeitpunkt erreicht wurde
Original:
tries to lock the associated TimedLockable mutex, returns if the mutex has been unavailable until specified time point has been reached
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(öffentliche Elementfunktion) [edit]
entriegelt die zugehörige Mutex
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.

(öffentliche Elementfunktion) [edit]
Modifiers
Original:
Modifiers
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Swaps Staat mit anderen std::unique_lock
Original:
swaps state with another std::unique_lock
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(öffentliche Elementfunktion) [edit]
distanziert die zugehörige Mutex ohne entsperren
Original:
disassociates the associated mutex without unlocking it
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(öffentliche Elementfunktion) [edit]
Beobachter
Original:
Observers
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
liefert einen Zeiger auf den zugeordneten Mutex
Original:
returns a pointer to 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.

(öffentliche Elementfunktion) [edit]
Tests, ob die Sperre der zugehörigen Mutex besitzt
Original:
tests whether the lock owns its associated mutex
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(öffentliche Elementfunktion) [edit]
Tests, ob die Sperre der zugehörigen Mutex besitzt
Original:
tests whether the lock owns its associated mutex
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(öffentliche Elementfunktion) [edit]

[Bearbeiten] Non-Member-Funktionen

Spezialisierung std::swap für unique_lock
Original:
specialization of std::swap for unique_lock
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(Funktions-Template) [edit]

[Bearbeiten] Beispiel

#include <mutex>
#include <thread>
#include <chrono>
 
struct Box {
    explicit Box(int num) : num_things{num} {}
 
    int num_things;
    std::mutex m;
};
 
void transfer(Box &from, Box &to, int num)
{
    // don't actually take the locks yet
    std::unique_lock<std::mutex> lock1(from.m, std::defer_lock);
    std::unique_lock<std::mutex> lock2(to.m, std::defer_lock);
 
    // lock both unique_locks without deadlock
    std::lock(lock1, lock2);
 
    from.num_things -= num;
    to.num_things += num;
 
    lock1.unlock();
    lock2.unlock();
}
 
int main()
{
    Box acc1(100);
    Box acc2(50);
 
    std::thread t1(transfer, std::ref(acc1), std::ref(acc2), 10);
    std::thread t2(transfer, std::ref(acc2), std::ref(acc1), 5);
 
    t1.join();
    t2.join();
}