std::timed_mutex::try_lock
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| bool try_lock(); |
(seit C++11) | |
Versucht, den Mutex zu sperren. Kehrt sofort zurück. Bei erfolgreicher Sperre Akquisition Renditen true, ansonsten false .
Original:
Tries to lock the mutex. Returns immediately. On successful lock acquisition returns true, otherwise returns false.
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Inhaltsverzeichnis |
[Bearbeiten] Parameter
(None)
Original:
(none)
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[Bearbeiten] Rückgabewert
true wenn die Sperre wurde erfolgreich erfasst, sonst false .
Original:
true if the lock was acquired successfully, otherwise false.
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[Bearbeiten] Ausnahmen
| This section is incomplete |
[Bearbeiten] Beispiel
Dieses Beispiel zeigt, Schloss, try_lock und entsperren in Aktion
Original:
This example shows lock, try_lock and unlock in action
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#include <iostream> #include <mutex> int main() { std::mutex test; if (test.try_lock()==true) std::cout << "lock acquired" << std::endl; else std::cout << "lock not acquired" << std::endl; test.unlock(); //now unlock the mutex test.lock(); //to lock it again if (test.try_lock()) //true can be left out std::cout << "lock acquired" << std::endl; else std::cout << "lock not acquired" << std::endl; test.lock(); //and now the finale (a block) }
Output:
lock acquired lock not acquired (program hangs)
[Bearbeiten] Siehe auch
| sperrt den Mutex, blockiert wenn der Mutex nicht verfügbar ist (öffentliche Elementfunktion) | |
| versucht, den Mutex zu sperren, kehrt zurück, wenn der Mutex hat been unavailable für das angegebene Timeout-Dauer Original: tries to lock the mutex, returns if the mutex has been unavailable for the specified timeout 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) | |
| versucht, den Mutex verriegeln, zurückgibt, wenn der Mutex hat been unavailable bis bestimmten Zeitpunkt erreicht worden ist Original: tries to lock the 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) | |
| entsperrt den Mutex (öffentliche Elementfunktion) | |
