atomic_fetch_add, atomic_fetch_add_explicit

 

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Atomare Operationen (C11)

 

Atomare Operationen Bibliothek

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

memory_order

atomic_flag

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

ATOMIC_***_LOCK_FREE

ATOMIC_FLAG_INIT

ATOMIC_VAR_INIT

kill_dependency

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

atomic_flag_test_and_set

atomic_flag_clear

atomic_init

atomic_is_lock_free

atomic_store

atomic_load

atomic_exchange

atomic_compare_exchange

atomic_fetch_add

atomic_fetch_sub

atomic_fetch_or

atomic_fetch_xor

atomic_fetch_and

atomic_thread_fence

atomic_signal_fence

 

Defined in header <stdatomic.h>
C atomic_fetch_add( volatile A* obj, M arg );	(1)
C atomic_fetch_add_explicit( volatile A* obj, M arg, memory_order order );	(2)

Atomar ersetzt den Wert wies durch obj mit dem Ergebnis der Zugabe von arg auf den alten Wert von obj, und gibt den Wert obj statt zuvor. Die Bedienung ist Lese-Modifizier-Schreib-Vorgang. Die erste Version Bestellungen Speicher zugreift nach memory_order_seq_cst, greift die zweite Version Bestellungen Speicher gemäß order .

Original:

Atomically replaces the value pointed by obj with the result of addition of arg to the old value of obj, and returns the value obj held previously. The operation is read-modify-write operation. The first version orders memory accesses according to memory_order_seq_cst, the second version orders memory accesses according to order.

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Dies ist ein für alle atomaren generische Funktion Objekttypen definiert. A ist der Typ eines atomaren Objekts ist M entweder der nicht-elementaren Typ entsprechend A wenn A ist atomar Integertyp oder ptrdiff_t wenn A ist atomar Zeigertyp .

Original:

This is a generische Funktion defined for all atomic object types. A is the type of an atomic object, M is either the non-atomic type corresponding to A if A is atomic integer type, or ptrdiff_t if A is atomic pointer type.

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Für Ganzzahl-Typen wird arithmetische definiert, um zwei-Komplement-Darstellung zu verwenden. There

Original:

For signed integer types, arithmetic is defined to use two’s complement representation. There

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keine undefinierten Ergebnissen. Für Zeigertypen, kann das Ergebnis eine undefinierte Adresse, aber die Operationen sonst keine undefinierten Verhalten .

Original:

are no undefined results. For pointer types, the result may be an undefined address, but the operations otherwise have no undefined behavior.

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Parameter

obj	-	Zeiger auf den atomaren Objekts zu ändern Original: pointer to the atomic object to modify The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
arg	-	der Wert, der dem Wert in der atomaren Objekt gespeichert hinzuzufügen Original: the value to add to the value stored in the atomic object The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
order	-	der Speicher-Synchronisation Bestellung für diesen Vorgang: Alle Werte sind zulässig Original: the memory synchronization ordering for this operation: all values are permitted The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Rückgabewert

Der Wert gehalten zuvor die atomare Objekt, auf das obj sein .

Original:

The value held previously be the atomic object pointed to by obj.

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Siehe auch

atomic_fetch_sub atomic_fetch_sub_explicit (C11)	atomaren Subtraktion Original: atomic subtraction The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktion)
C++ documentation for atomic_fetch_add, atomic_fetch_add_explicit