DEENESPTFRRUARHIKOZHNL

类 ara::shwa::Buffer

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[AP_SWS_SHWA_00201] 原文尚未导入 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

用户指南人工智能生成

管理用于硬件加速的多维内存区域,具有受控的创建和分配。
AI 生成 未审核 模型: gemini-3.8-flash-medium · 推理强度: medium · 温度: 不可控 · 提示词: 9fe6efb67359 来源 未决问题(2)
译自德文指南gemini-3.8-flash-low · 2026-10-13 · 德文原文

管理用于硬件加速的多维内存区域,具有受控的创建和分配。

该类模板用于管理 Adaptive Platform SWS_SafeHardwareAcceleration §7.1 “High Level Design of Safe Hardware Acceleration in an Adaptive Platform” 中用于安全硬件加速的多维内存缓冲区。由于所有默认、复制和移动操作均被删除,因此只能通过静态工厂方法(如 [AP_SWS_SHWA_00209])作为以独占方式持有的指针进行创建。通过可配置的属性和分配器可以调整内存,而对属性的读取访问未被设计为线程安全。失败的内存预留将通过定义的错误代码报告给调用方。

上下文

模板类 ara::shwa::Buffer 在 Adaptive Platform 的 Safe Hardware Acceleration(SHWA)模块中构成用于封装和管理多维内存区域的核心抽象。正如系统架构中所述,Adaptive Applications 以及功能集群通常与多个队列(Queues)、加速器设备(Devices)和缓冲区(SWS_SafeHardwareAcceleration §7.1 “High Level Design of Safe Hardware Acceleration in an Adaptive Platform”)的组合进行交互。在此过程中,缓冲区提供在主机或设备级别进行加速操作所需的内存,并且可以选择通过应用程序特定的分配器([AP_SWS_SHWA_00210])或主机数据指针进行配置。

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

上下文图:缓冲区嵌入在应用程序、设备、队列和分配器的功能交互中。来源:SWS_SafeHardwareAcceleration §7.1 “High Level Design of Safe Hardware Acceleration in an Adaptive Platform”、[AP_SWS_SHWA_00210]。

生命周期

缓冲区实例的生命周期受到严格的语义限制。为了确保明确的所有权,默认构造函数([AP_SWS_SHWA_00202])以及复制构造函数([AP_SWS_SHWA_00203])和复制赋值运算符([AP_SWS_SHWA_00204])均已被删除。同样,移动构造函数([AP_SWS_SHWA_00205])和移动赋值运算符([AP_SWS_SHWA_00206])也被显式删除。Interpretation: 这可能会防止缓冲区资源或硬件关系在内存中不受控制地重复或移动。 问题 Q-dcabd66fa9f3ec2a (未决)

因此,创建仅通过重载族 Create 的静态工厂方法进行,该方法在成功时返回封装在 ara::core::Result 中的 std::unique_ptr<Buffer>。在此,有不同的构造路径可供使用:

  • 带有缓冲区范围和可选属性列表的创建:线程安全([AP_SWS_SHWA_00209])。
  • 带有缓冲区范围、专用分配器和属性列表的创建:线程安全([AP_SWS_SHWA_00210])。
  • 基于带有缓冲区范围的现有主机数据指针的创建:对于可修改指针([AP_SWS_SHWA_00211])和常量数据指针([AP_SWS_SHWA_00213])都是线程安全的。
  • 带有常量主机数据指针、缓冲区范围和分配器的创建:线程安全([AP_SWS_SHWA_00214])。
  • 仅通过分配器直接创建:非线程安全([AP_SWS_SHWA_00212])。

成功创建后,所有权通过 std::unique_ptr 保留在调用上下文中。智能指针到期时对象的销毁可能会通过相应的分配器自动释放底层内存区域。 问题 Q-aa2b5642b8527803 (未决)

使用路径

典型使用路径始于通过线程安全工厂方法(如 [AP_SWS_SHWA_00209])对缓冲区进行分配和初始化。成功实例化后,应用程序可以通过调用 HasProperty<PropertyT>()([AP_SWS_SHWA_00215])来检查是否为此缓冲区存储了特定属性。如果存在所需属性,则可以通过 GetProperty<PropertyT>()([AP_SWS_SHWA_00216])同步读取其具体值。需要注意的是,HasProperty 和 GetProperty 均被声明为非线程安全;因此,对同一缓冲区对象的并发查询必须在应用程序端进行同步。

缓冲区创建与属性查询流程应用ara::shwa::BufferCreate(bufferRange, propList)Result<std::unique_ptr<Buffer>>HasProperty<PropertyT>()boolopt属性可用GetProperty<PropertyT>()Result<PropertyT>

时序图:通过工厂实例化以及随后的属性查询的典型顺序。来源:[AP_SWS_SHWA_00209]、[AP_SWS_SHWA_00215]、[AP_SWS_SHWA_00216]。

错误场景

所有工厂方法和检查方法均声明为 noexcept,并提供无限制的异常安全性(exception safe)。错误通过 ara::core::Result 进行指示:

本指南由人工智能基于 AUTOSAR 规范 R25-11 生成。

生命周期

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.

成员图

构造函数和析构函数

1

运算符

1

详细视图

请在大纲中选择一个条目。

构造函数和析构函数

Buffer 函数 3

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

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

方法

Create 函数 6

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

重载 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

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

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

Prüft, ob die angeforderte Eigenschaft verfügbar ist.

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

运算符

operator= 函数 2

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

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

详细信息

函数 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#36ff103e
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36ff103e
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函数 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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函数 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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函数 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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函数 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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函数 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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函数 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.

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

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AUTOSAR/AP/record/AP_SWS_SHWA_00211
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AUTOSAR/AP/record/AP_SWS_SHWA_00211@rel:R25-11#a5bee8d3
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https://www.autosar.org/fileadmin/standards/R25-11/AP/AUTOSAR_AP_SWS_SafeHardwareAcceleration.pdf#nameddest=AP_SWS_SHWA_00211
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函数 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.

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

Record
AUTOSAR/AP/record/AP_SWS_SHWA_00214
Status
valid/unmigrated
Version
AUTOSAR/AP/record/AP_SWS_SHWA_00214@rel:R25-11#a126956e
Content hash
a126956e
Source
https://www.autosar.org/fileadmin/standards/R25-11/AP/AUTOSAR_AP_SWS_SafeHardwareAcceleration.pdf#nameddest=AP_SWS_SHWA_00214
Status: valid/unmigrated Version: rel:R25-11#e39056fb Versionshistorie & Revisions (1 transition)
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函数 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.

Record
AUTOSAR/AP/record/AP_SWS_SHWA_00209
Status
valid/unmigrated
Version
AUTOSAR/AP/record/AP_SWS_SHWA_00209@rel:R25-11#29edb412
Content hash
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Source
https://www.autosar.org/fileadmin/standards/R25-11/AP/AUTOSAR_AP_SWS_SafeHardwareAcceleration.pdf#nameddest=AP_SWS_SHWA_00209
Status: valid/unmigrated Version: rel:R25-11#b1592359 Versionshistorie & Revisions (1 transition)
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函数 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.

Record
AUTOSAR/AP/record/AP_SWS_SHWA_00210
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Version
AUTOSAR/AP/record/AP_SWS_SHWA_00210@rel:R25-11#dc16dba9
Content hash
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Source
https://www.autosar.org/fileadmin/standards/R25-11/AP/AUTOSAR_AP_SWS_SafeHardwareAcceleration.pdf#nameddest=AP_SWS_SHWA_00210
Status: valid/unmigrated Version: rel:R25-11#9fb186e3 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_00210@rel:R25-11#9fb186e3
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

函数 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#50a160ad
Content hash
50a160ad
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

函数 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

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Record
AUTOSAR/AP/record/AP_SWS_SHWA_00216
Status
valid/unmigrated
Version
AUTOSAR/AP/record/AP_SWS_SHWA_00216@rel:R25-11#b1446367
Content hash
b1446367
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

函数 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#58c3175c
Content hash
58c3175c
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