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std::atomic::fetch_sub

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< cpp‎ | atomic‎ | atomic

 
 
Atomare Operationen Bibliothek
Types
Original:
Types
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atomic(C++11)
atomic_is_lock_free(C++11)
Funktionen
Original:
Functions
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atomic_store
atomic_store_explicit
(C++11)
(C++11)
atomic_load
atomic_load_explicit
(C++11)
(C++11)
atomic_exchange
atomic_exchange_explicit
(C++11)
(C++11)
atomic_compare_exchange_weak
atomic_compare_exchange_weak_explicit
atomic_compare_exchange_strong
atomic_compare_exchange_strong_explicit
(C++11)
(C++11)
(C++11)
(C++11)
atomic_fetch_add
atomic_fetch_add_explicit
(C++11)
(C++11)
atomic_fetch_sub
atomic_fetch_sub_explicit
(C++11)
(C++11)
atomic_fetch_and
atomic_fetch_and_explicit
(C++11)
(C++11)
atomic_fetch_or
atomic_fetch_or_explicit
(C++11)
(C++11)
atomic_fetch_xor
atomic_fetch_xor_explicit
(C++11)
(C++11)
Atomic Fahnen
Original:
Atomic flags
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atomic_flag(C++11)
atomic_flag_test_and_set
atomic_flag_test_and_set_explicit
(C++11)
(C++11)
atomic_flag_clear
atomic_flag_clear_explicit
(C++11)
(C++11)
Initialisierung
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Initialization
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atomic_init(C++11)
ATOMIC_VAR_INIT(C++11)
ATOMIC_FLAG_INIT(C++11)
Speicher Bestellung
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Memory ordering
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memory_order(C++11)
kill_dependency(C++11)
atomic_thread_fence(C++11)
atomic_signal_fence(C++11)
 
std::atomic
Member-Funktionen
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Member functions
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atomic::atomic
atomic::operator=
atomic::is_lock_free
atomic::store
atomic::load
atomic::operator T
atomic::exchange
atomic::compare_exchange
Specialized Member-Funktionen
Original:
Specialized member functions
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atomic::fetch_add
atomic::fetch_sub
atomic::fetch_and
atomic::fetch_or
atomic::fetch_xor
atomic::operator++
atomic::operator++(int)
atomic::operator--
atomic::operator--(int)
atomic::operator+=
atomic::operator-=
atomic::operator&=
atomic::operator|=
atomic::operator^=
 
T fetch_sub( T arg,

             memory_order = std::memory_order_seq_cst );
T fetch_sub( T arg,

             memory_order = std::memory_order_seq_cst ) volatile;
(Mitglied nur atomic<Integral> Template-Spezialisierung)
(seit C++11)
T* fetch_sub( std::ptrdiff_t arg,

              memory_order = std::memory_order_seq_cst );
T* fetch_sub( std::ptrdiff_t arg,

              memory_order = std::memory_order_seq_cst ) volatile;
(Mitglied nur atomic<T*> Template-Spezialisierung)
(seit C++11)
Atomar ersetzt die aktuelle Wert mit dem Ergebnis der Subtraktion des arithmetischen Wertes und arg. Die Bedienung ist Lese-Modifizier-Schreib-Vorgang. Speichermodul gemäß dem Wert des betroffenen memory_order .
Original:
Atomically replaces the current value with the result of arithmetic subtraction of the value and arg. The operation is read-modify-write operation. Memory is affected according to the value of memory_order.
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Für signierte Integral Typen wird Arithmetik definiert Zweierkomplementdarstellung verwenden. There
Original:
For signed Integral types, arithmetic is defined to use two’s complement representation. There
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keine undefinierten Ergebnissen. Für T* Typen, kann das Ergebnis eine undefinierte Adresse, aber die Operationen sonst keine undefinierten Verhalten .
Original:
are no undefined results. For T* types, the result may be an undefined address, but the operations otherwise have no undefined behavior.
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Inhaltsverzeichnis

[Bearbeiten] Parameter

arg -
das andere Argument der arithmetische Subtraktion
Original:
the other argument of arithmetic subtraction
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memory_order -
Speicher, um Einschränkungen zu erzwingen
Original:
memory order constraints to enforce
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[Bearbeiten] Rückgabewert

Der Wert des atomaren Variable vor dem Anruf .
Original:
The value of the atomic variable before the call.
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[Bearbeiten] Ausnahmen

noexcept specification:  
noexcept
  (seit C++11)

[Bearbeiten] Siehe auch

subtrahiert eine nicht-elementare Wert aus einer atomaren Objekt und erhält den vorherigen Wert des atomaren
Original:
subtracts a non-atomic value from an atomic object and obtains the previous value of the atomic
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(Funktions-Template) [edit]