close
Espaces de noms
Variantes

    atomic_fetch_add, atomic_fetch_add_explicit

    De cppreference.com
    < c | atomic
    Image

    This page has been machine-translated from the English version of the wiki using Google Translate.

    The translation may contain errors and awkward wording. Hover over text to see the original version. You can help to fix errors and improve the translation. For instructions click here.

    Click here for the English version of this page

    <metanoindex/>

     
    C
     
    Atomique opérations de la bibliothèque
    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
    Macros
    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
    Fonctions
    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
     
    <tbody> </tbody>
    Déclaré dans l'en-tête <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)
    Remplace atomiquement la valeur pointée par obj avec le résultat de l'addition de arg à l'ancienne valeur de obj, et renvoie la valeur obj occupait précédemment. L'opération est de lecture-modification-écriture. La première version de la mémoire accède à savoir selon la memory_order_seq_cst, la deuxième version de mémoire accède à savoir selon la 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.
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    Il s'agit d'une fonction générique définis pour tous les types d'objets atomiques. A est le type d'un objet atomique, M est soit du type non atomique correspondant à A si A est atomique de type entier, ou si ptrdiff_t A est de type pointeur atomique .
    Original:
    This is a fonction générique 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.
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    Pour les types entiers signés, l'arithmétique est défini pour utiliser la représentation en complément à deux. Il
    Original:
    For signed integer types, arithmetic is defined to use two’s complement representation. There
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    n'y a pas de résultats indéfinis. Pour les types pointeur, le résultat peut être une adresse définie, mais les opérations n'ont autrement pas de comportement indéfini .
    Original:
    are no undefined results. For pointer types, the result may be an undefined address, but the operations otherwise have no undefined behavior.
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

    Paramètres

    obj -
    pointeur vers l'objet à modifier atomique
    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 -
    la valeur à ajouter à la valeur stockée dans l'objet atomique
    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 -
    la synchronisation de mémoire de commande pour cette opération: toutes les valeurs sont autorisées
    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.

    Retourne la valeur

    La valeur détenait auparavant l'objet atomique pointée par obj .
    Original:
    The value held previously be the atomic object pointed to by obj.
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

    Voir aussi

    (C11)
    atomique soustraction
    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.

    (fonction) [edit]
    C++ documentation for atomic_fetch_add, atomic_fetch_add_explicit