DEENESPTFRRUARHIKOZHNL

classe ara::shwa::Buffer

Diese Seite wurde vollständig KI-generiert auf Basis von SWS Safe Hardware Acceleration (R25-11) — kein offizieller AUTOSAR-Text und keine automatisch extrahierte API-Seite wie die übrigen Module. Als Interpretation gekennzeichnete Aussagen sind Schlussfolgerungen aus den Quellen.

[AP_SWS_SHWA_00201] texto ainda não importado Upstream: RS_SHWA_00002, RS_SHWA_00013

template <typename T, int Dimensions = 1, typename AllocatorT = BufferAllocator<std::remove_const_t<T>>> class Buffer final {...};

Die Spezifikation definiert diesen Klassentyp mit der gezeigten Schnittstelle.

Header-Datei#include "ara/shwa/buffer.h"
Scopenamespace ara::shwa

Guia do utilizadorGERADO POR IA

Gere áreas de memória multidimensionais para a aceleração de hardware com criação e alocação controladas.
GERADO POR IA não revisado Modelo: gemini-3.8-flash-medium · Esforço: medium · Temperatura: não controlável · Prompt: 9fe6efb67359 Procedência Perguntas em aberto (2)
traduzido do guia alemãogemini-3.8-flash-low · 2026-10-13 · Original em alemão

Gere áreas de memória multidimensionais para a aceleração de hardware com criação e alocação controladas.

O modelo de classe serve para gerir buffers de memória multidimensionais para a aceleração segura de hardware na Adaptive Platform SWS_SafeHardwareAcceleration §7.1 «High Level Design of Safe Hardware Acceleration in an Adaptive Platform». Visto que todas as operações predefinidas, de cópia e de movimento foram eliminadas, a criação efetua-se exclusivamente através de métodos de fábrica estáticos como [AP_SWS_SHWA_00209] sob a forma de ponteiro detido em regime de exclusividade. Através de propriedades e alocadores configuráveis, a memória pode ser adaptada, ao passo que os acessos de leitura às propriedades não estão concebidos como thread-safe. As reservas de memória mal-sucedidas são reportadas ao chamador através de códigos de erro definidos.

Contexto

A classe de modelo ara::shwa::Buffer constitui, no módulo Safe Hardware Acceleration (SHWA) da Adaptive Platform, uma abstração central para o encapsulamento e gestão de áreas de memória multidimensionais. Conforme exposto na arquitetura de sistema, as Adaptive Applications bem como os clusters funcionais interagem tipicamente com uma combinação de múltiplas filas (Queues), dispositivos aceleradores (Devices) e buffers (SWS_SafeHardwareAcceleration §7.1 «High Level Design of Safe Hardware Acceleration in an Adaptive Platform»). Os buffers disponibilizam aqui a memória necessária para operações de aceleração ao nível do host ou do device, podendo ser configurados opcionalmente através de alocadores específicos da aplicação ([AP_SWS_SHWA_00210]) ou de ponteiros de dados do host.

BufferContext app Adaptive Application ou Functional Cluster buf ara::shwa::Buffer app->buf erzeugt / nutzt queue Queue app->queue verwendet dev Device app->dev verwendet alloc AllocatorT buf->alloc usa

Diagrama de contexto: integração do buffer na interação funcional entre aplicações, dispositivos, filas e alocadores. Fontes: SWS_SafeHardwareAcceleration §7.1 «High Level Design of Safe Hardware Acceleration in an Adaptive Platform», [AP_SWS_SHWA_00210].

Ciclo de vida

O ciclo de vida de uma instância de buffer está sujeito a restrições semânticas rigorosas. Para assegurar relações de posse inequívocas, tanto o construtor predefinido ([AP_SWS_SHWA_00202]) como o construtor de cópia ([AP_SWS_SHWA_00203]) e o operador de atribuição por cópia ([AP_SWS_SHWA_00204]) estão eliminados. De igual modo, o construtor de movimento ([AP_SWS_SHWA_00205]) e o operador de atribuição por movimento ([AP_SWS_SHWA_00206]) estão explicitamente eliminados. Interpretação: isto deverá impedir que recursos de buffer ou relações de hardware sejam duplicados ou deslocados na memória de forma descontrolada. Pergunta Q-dcabd66fa9f3ec2a (aberta)

A criação realiza-se, por conseguinte, exclusivamente através de métodos de fábrica estáticos da família de sobrecargas Create, os quais retornam, em caso de sucesso, um std::unique_ptr<Buffer> encapsulado num ara::core::Result. Para tal, encontram-se disponíveis diferentes caminhos de construção:

  • Criação com região de buffer e lista opcional de propriedades: thread-safe ([AP_SWS_SHWA_00209]).
  • Criação com região de buffer, alocador dedicado e lista de propriedades: thread-safe ([AP_SWS_SHWA_00210]).
  • Criação com base em ponteiros de dados do host existentes com intervalo de buffer: thread-safe tanto para ponteiros modificáveis ([AP_SWS_SHWA_00211]) quanto para ponteiros de dados constantes ([AP_SWS_SHWA_00213]).
  • Criação com ponteiro de dados do host constante, intervalo de buffer e alocador: thread-safe ([AP_SWS_SHWA_00214]).
  • Criação direta exclusivamente por meio de um alocador: não thread-safe ([AP_SWS_SHWA_00212]).

Após a criação bem-sucedida, a posse permanece com o contexto chamador via std::unique_ptr. A destruição do objeto no término do smart pointer deve liberar automaticamente a área de memória subjacente por meio do respectivo alocador. Pergunta Q-aa2b5642b8527803 (aberta)

Caminho de utilização

Um caminho de utilização típico começa com a alocação e inicialização do buffer por meio de um dos métodos de fábrica thread-safe, como [AP_SWS_SHWA_00209]. Após a instanciação bem-sucedida, a aplicação pode verificar se propriedades específicas estão definidas para este buffer chamando HasProperty<PropertyT>() ([AP_SWS_SHWA_00215]). Se a propriedade desejada estiver presente, seu valor concreto poderá ser lido de forma síncrona via GetProperty<PropertyT>() ([AP_SWS_SHWA_00216]). Deve-se observar que tanto HasProperty quanto GetProperty estão declarados como não thread-safe; consultas concorrentes no mesmo objeto de buffer devem, portanto, ser sincronizadas pelo lado da aplicação.

Fluxo de criação de buffer e consulta de propriedadesAplicaçãoara::shwa::BufferCreate(bufferRange, propList)Result<std::unique_ptr<Buffer>>HasProperty<PropertyT>()booloptPropriedade disponívelGetProperty<PropertyT>()Result<PropertyT>

Diagrama de sequência: sequência típica na instanciação por meio da fábrica e posterior consulta de propriedades. Fontes: [AP_SWS_SHWA_00209], [AP_SWS_SHWA_00215], [AP_SWS_SHWA_00216].

Cenários de erro

Todos os métodos de fábrica e de inspeção são declarados com noexcept e oferecem segurança irrestrita contra exceções (exception safe). Os erros são sinalizados por meio do ara::core::Result:

Este guia foi gerado por inteligência artificial com base na especificação AUTOSAR R25-11.

Ciclo de vida

G Buffer-Lebenszyklus (abgeleitete Sicht) i r Range verfügbar i->r b Buffer über Create erzeugt r->b Buffer::Create a Accessor gebunden b->a Accessor::Create u Kernel-/Host-Zugriff a->u Get / Set / operator[] f u->f RAII / unique_ptr

Ablauf abgeleitet aus Buffer-/Accessor-Factorys und RAII. Quellen: SWS SHWA §7.3, SWS SHWA §7.5. Teilweise Interpretation: Die Zustandsfolge macht den dokumentierten Objektzusammenhang sichtbar.

Mapa de membros

Construtores e destrutor

1

Operadores

1

Vista de detalhes

Selecione uma entrada no índice.

Construtores e destrutor

Buffer função 3

Die Spezifikation definiert diese Deklaration mit der in der Signatur ausgewiesenen Semantik.

Sobrecargas Buffer 3
Buffer ()=delete; AP_SWS_SHWA_00202
Buffer (Buffer &&)=delete; AP_SWS_SHWA_00205
Buffer (Buffer const &)=delete; AP_SWS_SHWA_00203

Métodos

Create função 6

Erzeugt beziehungsweise liefert das in der Signatur beschriebene Objekt oder Ergebnis über den angegebenen Factory-Pfad.

Sobrecargas Create 6
static ara::core::Result< std::unique_ptr< Buffer > > Create (AllocatorT allocator, const PropertyList &propList={}) noexcept; AP_SWS_SHWA_00212
static ara::core::Result< std::unique_ptr< Buffer > > Create (T *hostData, const Range< Dimensions > &bufferRange, const PropertyList &prop List={}) noexcept; AP_SWS_SHWA_00211
static ara::core::Result< std::unique_ptr< Buffer > > Create (const T *hostData, const Range< Dimensions > &bufferRange, AllocatorT allocator, const PropertyList &propList={}) noexcept; AP_SWS_SHWA_00214
static ara::core::Result< std::unique_ptr< Buffer > > Create (const Range< Dimensions > &bufferRange, const PropertyList &propList={}) noexcept; AP_SWS_SHWA_00209
static ara::core::Result< std::unique_ptr< Buffer > > Create (const Range< Dimensions > &bufferRange, AllocatorT allocator, const Property List &propList={}) noexcept; AP_SWS_SHWA_00210
static ara::core::Result< std::unique_ptr< Buffer > > Create (const T *hostData, const Range< Dimensions > &bufferRange, const PropertyList &propList={}) noexcept; AP_SWS_SHWA_00213
GetProperty função

Liest die durch die Signatur bezeichnete Information oder Eigenschaft aus dem Objekt.

template <typename PropertyT> ara::core::Result< PropertyT > GetProperty () const noexcept;
HasProperty função

Prüft, ob die angeforderte Eigenschaft verfügbar ist.

template <typename PropertyT> bool HasProperty () const noexcept;

Operadores

operator= função 2

Stellt die in der Signatur ausgewiesene Index- beziehungsweise Zuweisungsoperation bereit.

Sobrecargas = 2
Buffer & operator= (Buffer &&)=delete; AP_SWS_SHWA_00206
Buffer & operator= (const Buffer &)=delete; AP_SWS_SHWA_00204

Detalhes

função Buffer [AP_SWS_SHWA_00202] Upstream: RS_SHWA_00002, RS_SHWA_00013

Buffer ()=delete;

Die Spezifikation definiert diese Deklaration mit der in der Signatur ausgewiesenen Semantik.

Scopeclass ara::shwa::Buffer

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Record
AUTOSAR/AP/record/AP_SWS_SHWA_00202
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AUTOSAR/AP/record/AP_SWS_SHWA_00202@rel:R25-11#8cbf4ba2
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https://www.autosar.org/fileadmin/standards/R25-11/AP/AUTOSAR_AP_SWS_SafeHardwareAcceleration.pdf#nameddest=AP_SWS_SHWA_00202
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função Buffer [AP_SWS_SHWA_00205] Upstream: RS_SHWA_00002, RS_SHWA_00013

Buffer (Buffer &&)=delete;

Die Spezifikation definiert diese Deklaration mit der in der Signatur ausgewiesenen Semantik.

Scopeclass ara::shwa::Buffer

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função operator= [AP_SWS_SHWA_00206] Upstream: RS_SHWA_00002, RS_SHWA_00013

Buffer & operator= (Buffer &&)=delete;

Stellt die in der Signatur ausgewiesene Index- beziehungsweise Zuweisungsoperation bereit.

Scopeclass ara::shwa::Buffer

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função operator= [AP_SWS_SHWA_00204] Upstream: RS_SHWA_00002, RS_SHWA_00013

Buffer & operator= (const Buffer &)=delete;

Stellt die in der Signatur ausgewiesene Index- beziehungsweise Zuweisungsoperation bereit.

Scopeclass ara::shwa::Buffer

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função Buffer [AP_SWS_SHWA_00203] Upstream: RS_SHWA_00002, RS_SHWA_00013

Buffer (Buffer const &)=delete;

Die Spezifikation definiert diese Deklaration mit der in der Signatur ausgewiesenen Semantik.

Scopeclass ara::shwa::Buffer

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função Create [AP_SWS_SHWA_00212] Upstream: RS_SHWA_00002, RS_SHWA_00013, RS_SHWA_00007

static ara::core::Result< std::unique_ptr< Buffer > > Create (AllocatorT allocator, const PropertyList &propList={}) noexcept;

Erzeugt beziehungsweise liefert das in der Signatur beschriebene Objekt oder Ergebnis über den angegebenen Factory-Pfad.

Scopeclass ara::shwa::Buffer
Thread Safetynot thread-safe rollback_semantics ShwaErrorCode::k Runtime General runtime error rollback_semantics
Exception Safetyexception safe
ErrorsShwaErrorCode::k MemoryNotAllocated Failed memory allocation on host/device.

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AUTOSAR/AP/record/AP_SWS_SHWA_00212
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função Create [AP_SWS_SHWA_00211] Upstream: RS_SHWA_00002, RS_SHWA_00013, RS_SHWA_00007

static ara::core::Result< std::unique_ptr< Buffer > > Create (T *hostData, const Range< Dimensions > &bufferRange, const PropertyList &prop List={}) noexcept;

Erzeugt beziehungsweise liefert das in der Signatur beschriebene Objekt oder Ergebnis über den angegebenen Factory-Pfad.

Scopeclass ara::shwa::Buffer
Thread Safetythread-safe rollback_semantics ShwaErrorCode::k Runtime General runtime error rollback_semantics
Exception Safetyexception safe
ErrorsShwaErrorCode::k MemoryNotAllocated Failed memory allocation on host/device.

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AUTOSAR/AP/record/AP_SWS_SHWA_00211
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função Create [AP_SWS_SHWA_00214] Upstream: RS_SHWA_00013, RS_SHWA_00002, RS_SHWA_00007

static ara::core::Result< std::unique_ptr< Buffer > > Create (const T *hostData, const Range< Dimensions > &bufferRange, AllocatorT allocator, const PropertyList &propList={}) noexcept;

Erzeugt beziehungsweise liefert das in der Signatur beschriebene Objekt oder Ergebnis über den angegebenen Factory-Pfad.

Scopeclass ara::shwa::Buffer
Thread Safetythread-safe rollback_semantics ShwaErrorCode::k Runtime General runtime error rollback_semantics
Exception Safetyexception safe
ErrorsShwaErrorCode::k MemoryNotAllocated Failed memory allocation on host/device.

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AUTOSAR/AP/record/AP_SWS_SHWA_00214
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AUTOSAR/AP/record/AP_SWS_SHWA_00214@rel:R25-11#2ac229d4
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https://www.autosar.org/fileadmin/standards/R25-11/AP/AUTOSAR_AP_SWS_SafeHardwareAcceleration.pdf#nameddest=AP_SWS_SHWA_00214
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função Create [AP_SWS_SHWA_00209] Upstream: RS_SHWA_00002, RS_SHWA_00013, RS_SHWA_00007

static ara::core::Result< std::unique_ptr< Buffer > > Create (const Range< Dimensions > &bufferRange, const PropertyList &propList={}) noexcept;

Erzeugt beziehungsweise liefert das in der Signatur beschriebene Objekt oder Ergebnis über den angegebenen Factory-Pfad.

Scopeclass ara::shwa::Buffer
Thread Safetythread-safe rollback_semantics ShwaErrorCode::k Runtime General runtime error rollback_semantics
Exception Safetyexception safe
ErrorsShwaErrorCode::k MemoryNotAllocated Failed memory allocation on host/device.

Request a governed re-review of this record. The record is not changed immediately.

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AUTOSAR/AP/record/AP_SWS_SHWA_00209
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AUTOSAR/AP/record/AP_SWS_SHWA_00209@rel:R25-11#82acb970
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função Create [AP_SWS_SHWA_00210] Upstream: RS_SHWA_00002, RS_SHWA_00013, RS_SHWA_00007

static ara::core::Result< std::unique_ptr< Buffer > > Create (const Range< Dimensions > &bufferRange, AllocatorT allocator, const Property List &propList={}) noexcept;

Erzeugt beziehungsweise liefert das in der Signatur beschriebene Objekt oder Ergebnis über den angegebenen Factory-Pfad.

Scopeclass ara::shwa::Buffer
Thread Safetythread-safe rollback_semantics ShwaErrorCode::k Runtime General runtime error rollback_semantics
Exception Safetyexception safe
ErrorsShwaErrorCode::k MemoryNotAllocated Failed memory allocation on host/device.

Request a governed re-review of this record. The record is not changed immediately.

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AUTOSAR/AP/record/AP_SWS_SHWA_00210
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Point-in-Time History:
DateActorTransitionReason / RationaleCampaign
2026-08-13toolnone → valid/unmigratedmechanically backfilled by migriere_status_backfill.py -- no per-field curation history exists yet for this record2026-08-13-status-backfill

função Create [AP_SWS_SHWA_00213] Upstream: RS_SHWA_00002, RS_SHWA_00013, RS_SHWA_00007

static ara::core::Result< std::unique_ptr< Buffer > > Create (const T *hostData, const Range< Dimensions > &bufferRange, const PropertyList &propList={}) noexcept;

Erzeugt beziehungsweise liefert das in der Signatur beschriebene Objekt oder Ergebnis über den angegebenen Factory-Pfad.

Scopeclass ara::shwa::Buffer
Thread Safetythread-safe rollback_semantics ShwaErrorCode::k Runtime General runtime error rollback_semantics
Exception Safetyexception safe
ErrorsShwaErrorCode::k MemoryNotAllocated Failed memory allocation on host/device.

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Record
AUTOSAR/AP/record/AP_SWS_SHWA_00213
Status
valid/unmigrated
Version
AUTOSAR/AP/record/AP_SWS_SHWA_00213@rel:R25-11#02c6a0ed
Content hash
02c6a0ed
Source
https://www.autosar.org/fileadmin/standards/R25-11/AP/AUTOSAR_AP_SWS_SafeHardwareAcceleration.pdf#nameddest=AP_SWS_SHWA_00213
Status: valid/unmigrated Version: rel:R25-11#19ced3a6 Versionshistorie & Revisions (1 transition)
Current State
valid/unmigrated
Reason
mechanically backfilled by migriere_status_backfill.py -- no per-field curation history exists yet for this record
Campaign
2026-08-13-status-backfill
Active Version
AUTOSAR/AP/record/AP_SWS_SHWA_00213@rel:R25-11#19ced3a6
Point-in-Time History:
DateActorTransitionReason / RationaleCampaign
2026-08-13toolnone → valid/unmigratedmechanically backfilled by migriere_status_backfill.py -- no per-field curation history exists yet for this record2026-08-13-status-backfill

função GetProperty [AP_SWS_SHWA_00216] Upstream: RS_SHWA_00001, RS_SHWA_00007

template <typename PropertyT> ara::core::Result< PropertyT > GetProperty () const noexcept;

Liest die durch die Signatur bezeichnete Information oder Eigenschaft aus dem Objekt.

Scopeclass ara::shwa::Buffer
Thread Safetynot thread-safe rollback_semantics
Exception Safetyexception safe
ErrorsShwaErrorCode::k FeatureNotSupported Used when a requested feature isn’t supported

Request a governed re-review of this record. The record is not changed immediately.

Record
AUTOSAR/AP/record/AP_SWS_SHWA_00216
Status
valid/unmigrated
Version
AUTOSAR/AP/record/AP_SWS_SHWA_00216@rel:R25-11#f254cb85
Content hash
f254cb85
Source
https://www.autosar.org/fileadmin/standards/R25-11/AP/AUTOSAR_AP_SWS_SafeHardwareAcceleration.pdf#nameddest=AP_SWS_SHWA_00216
Status: valid/unmigrated Version: rel:R25-11#0f3a445d Versionshistorie & Revisions (1 transition)
Current State
valid/unmigrated
Reason
mechanically backfilled by migriere_status_backfill.py -- no per-field curation history exists yet for this record
Campaign
2026-08-13-status-backfill
Active Version
AUTOSAR/AP/record/AP_SWS_SHWA_00216@rel:R25-11#0f3a445d
Point-in-Time History:
DateActorTransitionReason / RationaleCampaign
2026-08-13toolnone → valid/unmigratedmechanically backfilled by migriere_status_backfill.py -- no per-field curation history exists yet for this record2026-08-13-status-backfill

função HasProperty [AP_SWS_SHWA_00215] Upstream: RS_SHWA_00001, RS_SHWA_00007

template <typename PropertyT> bool HasProperty () const noexcept;

Prüft, ob die angeforderte Eigenschaft verfügbar ist.

Scopeclass ara::shwa::Buffer
Thread Safetynot thread-safe
Exception Safetyexception safe

Request a governed re-review of this record. The record is not changed immediately.

Record
AUTOSAR/AP/record/AP_SWS_SHWA_00215
Status
valid/unmigrated
Version
AUTOSAR/AP/record/AP_SWS_SHWA_00215@rel:R25-11#68a38f67
Content hash
68a38f67
Source
https://www.autosar.org/fileadmin/standards/R25-11/AP/AUTOSAR_AP_SWS_SafeHardwareAcceleration.pdf#nameddest=AP_SWS_SHWA_00215
Status: valid/unmigrated Version: rel:R25-11#565dc991 Versionshistorie & Revisions (1 transition)
Current State
valid/unmigrated
Reason
mechanically backfilled by migriere_status_backfill.py -- no per-field curation history exists yet for this record
Campaign
2026-08-13-status-backfill
Active Version
AUTOSAR/AP/record/AP_SWS_SHWA_00215@rel:R25-11#565dc991
Point-in-Time History:
DateActorTransitionReason / RationaleCampaign
2026-08-13toolnone → valid/unmigratedmechanically backfilled by migriere_status_backfill.py -- no per-field curation history exists yet for this record2026-08-13-status-backfill