类 ara::shwa::Device

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[AP_SWS_SHWA_00301] 原文尚未导入 Upstream: RS_SHWA_00001, RS_SHWA_00015

class Device final {...};

Die Spezifikation definiert diesen Klassentyp mit der gezeigten Schnittstelle.

Header-Datei	#include "ara/shwa/device.h"
Scope	namespace ara::shwa

用户指南人工智能生成

封装并标识诸如 CPU 和 GPU 等硬件加速器，以安全执行计算密集型任务。

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： 920debb94b23 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

封装并标识诸如 CPU 和 GPU 等硬件加速器，以安全执行计算密集型任务。

用于在 Adaptive Platform AUTOSAR_AP_SWS_SafeHardwareAcceleration 第12页内抽象和管理硬件加速器。实例仅通过工厂方法（如 Create()）创建，并提供用于检查设备类型以及读取特定特征的操作 [AP_SWS_SHWA_00308]、[AP_SWS_SHWA_00313]。由于这些操作不是线程安全的，在多线程环境中使用时需要外部同步。

上下文

类 ara::shwa::Device 在安全硬件加速模块（Safe Hardware Acceleration）中充当物理计算单元的主要抽象 AUTOSAR_AP_SWS_SafeHardwareAcceleration 第12页。在 Adaptive Platform 内，它使 Adaptive Applications 以及其他功能集群能够访问和管理加速器资源。典型的整体系统将 Device 的实例与执行队列（Queues）和内存缓冲区（Buffers）相结合，以便以结构化方式将计算密集型任务委托给加速器硬件 SWS_SafeHardwareAcceleration 第22页。

上下文图：ara::shwa::Device 与应用程序、队列及硬件交互的嵌入关系。来源：AUTOSAR_AP_SWS_SafeHardwareAcceleration 第12页、SWS_SafeHardwareAcceleration 第22页

生命周期

ara::shwa::Device 对象的创建受到严格控制：默认构造函数被显式删除 [AP_SWS_SHWA_00302]。实例只能通过静态工厂方法 Create() 创建，既可以不带参数用于标准设备 [AP_SWS_SHWA_00308]，也可以通过选择器对象使用 Create(const DeviceSelector&) [AP_SWS_SHWA_00309] 进行参数化。两种方法均返回一个 ara::core::Result<Device>。

在资源所有权方面，该类具有常规的复制和移动语义：复制构造函数 [AP_SWS_SHWA_00303] 和复制赋值运算符 [AP_SWS_SHWA_00304] 以及移动构造函数 [AP_SWS_SHWA_00305] 和移动赋值运算符 [AP_SWS_SHWA_00306] 均被声明为 noexcept=default。理解：该对象在内部可能被设计为实际硬件资源的轻量级句柄，从而能够以较低开销且异常安全地进行复制。问题 Q-a6ff4d89f19b0f36 (未决)物理硬件接口的生命周期与底层驱动程序或子系统的运行时间绑定，而应用程序级别的实例可以像常规值类型一样进行传递。该类的所有工厂调用和方法均被规范为非线程安全。

使用路径

典型的使用路径始于通过工厂方法之一进行实例化。成功返回后，将检查该实例以确定计算单元的类型并查询设备特定参数。随后，设备通常被分配给队列和缓冲区，以执行处理作业。

实例化：调用 Create() 或 Create(deviceSelector) 以提供设备 [AP_SWS_SHWA_00308]、[AP_SWS_SHWA_00309]。
类型检查：通过谓词 IsCpu() [AP_SWS_SHWA_00310]、IsGpu() [AP_SWS_SHWA_00311] 或 IsAccelerator() [AP_SWS_SHWA_00312] 验证硬件类别。
配置查询：通过模板方法 GetInfo<InfoType>() [AP_SWS_SHWA_00313] 读取详细的设备信息。

时序图：初始化、类型检查和信息查询的典型顺序。来源：[AP_SWS_SHWA_00309]、[AP_SWS_SHWA_00311]、[AP_SWS_SHWA_00313]

错误场景

ara::shwa::Device 的方法通过错误类型 ara::core::Result 确定性地传达错误状态。规范了以下错误情况：

ShwaErrorCode::kResourceBusy：当请求时资源处于占用状态时发生。这可能在实例创建期间 [AP_SWS_SHWA_00308]、[AP_SWS_SHWA_00309] 被触发，也可能在检查操作如 IsCpu() [AP_SWS_SHWA_00310]、IsGpu() [AP_SWS_SHWA_00311] 或 IsAccelerator() [AP_SWS_SHWA_00312] 时被触发。
ShwaErrorCode::kFeatureNotSupported：当系统不支持请求的属性或设备配置时报告。这涉及创建方法 [AP_SWS_SHWA_00308]、[AP_SWS_SHWA_00309] 以及通过 GetInfo<InfoType>() [AP_SWS_SHWA_00313] 查询特征结构。

在异常安全性方面，所有操作均被视为 exception safe 或带有 noexcept 注解。由于这些操作不是线程安全的，在同一实例或共享硬件资源上的并发调用必须由应用层进行同步。

本指南基于 AUTOSAR 标准 R25-11 自动生成。

成员图

详细视图

请在大纲中选择一个条目。

此版本没有元素数据

构造函数和析构函数

Device 函数 3

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

重载 Device 3

Device ()=delete; AP_SWS_SHWA_00302

Device (Device &&dev) noexcept=default; AP_SWS_SHWA_00305

Device (Device const &dev) noexcept=default; AP_SWS_SHWA_00303

方法

Create 函数 2

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

重载 Create 2

template <typename DeviceSelector> static ara::core::Result< Device > Create (const DeviceSelector &deviceSelector) noexcept;

AP_SWS_SHWA_00309

static ara::core::Result< Device > Create () noexcept; AP_SWS_SHWA_00308

GetInfo 函数

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

template <typename InfoType> ara::core::Result< typename InfoType::ReturnType > GetInfo () const noexcept;

IsAccelerator 函数

Prüft die in der Signatur bezeichnete Eigenschaft des Devices oder der Queue.

ara::core::Result< bool > IsAccelerator () const noexcept;

IsCpu 函数

Prüft die in der Signatur bezeichnete Eigenschaft des Devices oder der Queue.

ara::core::Result< bool > IsCpu () const noexcept;

IsGpu 函数

Prüft die in der Signatur bezeichnete Eigenschaft des Devices oder der Queue.

ara::core::Result< bool > IsGpu () const noexcept;

运算符

operator= 函数 2

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

重载 = 2

Device & operator= (Device &&dev) noexcept=default; AP_SWS_SHWA_00306

Device & operator= (const Device &dev) noexcept=default; AP_SWS_SHWA_00304

点击条目以查看其关系。

详细信息

函数 Device [AP_SWS_SHWA_00302] Upstream: RS_SHWA_00015

Device ()=delete;

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

Scope	class ara::shwa::Device

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Record: AUTOSAR/AP/record/AP_SWS_SHWA_00302
Status: valid/unmigrated
Version: AUTOSAR/AP/record/AP_SWS_SHWA_00302@rel:R25-11#427ec18e
Content hash: 427ec18e
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Status: valid/unmigrated Version: rel:R25-11#aef4a102 Versionshistorie & Revisions (1 transition)

Current State: valid/unmigrated
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函数 Device [AP_SWS_SHWA_00305] Upstream: RS_SHWA_00015

Device (Device &&dev) noexcept=default;

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

Scope	class ara::shwa::Device
Exception Safety	exception safe

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Record: AUTOSAR/AP/record/AP_SWS_SHWA_00305
Status: valid/unmigrated
Version: AUTOSAR/AP/record/AP_SWS_SHWA_00305@rel:R25-11#12ab24ef
Content hash: 12ab24ef
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函数 operator= [AP_SWS_SHWA_00306] Upstream: RS_SHWA_00015

Device & operator= (Device &&dev) noexcept=default;

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

Scope	class ara::shwa::Device
Exception Safety	exception safe

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Record: AUTOSAR/AP/record/AP_SWS_SHWA_00306
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函数 operator= [AP_SWS_SHWA_00304] Upstream: RS_SHWA_00015

Device & operator= (const Device &dev) noexcept=default;

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

Scope	class ara::shwa::Device
Exception Safety	exception safe

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Record: AUTOSAR/AP/record/AP_SWS_SHWA_00304
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函数 Device [AP_SWS_SHWA_00303] Upstream: RS_SHWA_00015

Device (Device const &dev) noexcept=default;

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

Scope	class ara::shwa::Device
Exception Safety	exception safe

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Record: AUTOSAR/AP/record/AP_SWS_SHWA_00303
Status: valid/unmigrated
Version: AUTOSAR/AP/record/AP_SWS_SHWA_00303@rel:R25-11#19597351
Content hash: 19597351
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函数 Create [AP_SWS_SHWA_00309] Upstream: RS_SHWA_00015, RS_SHWA_00006, RS_SHWA_00007

template <typename DeviceSelector> static ara::core::Result< Device > Create (const DeviceSelector &deviceSelector) noexcept;

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

Scope	class ara::shwa::Device
Thread Safety	not thread-safe rollback_semantics ShwaErrorCode::k ResourceBusy The operation could not be performed because the resource is currently busy rollback_semantics
Exception Safety	exception safe
Errors	ShwaErrorCode::k FeatureNotSupported Used when a requested feature isn’t supported

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Record: AUTOSAR/AP/record/AP_SWS_SHWA_00309
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函数 Create [AP_SWS_SHWA_00308] Upstream: RS_SHWA_00015, RS_SHWA_00007

static ara::core::Result< Device > Create () noexcept;

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

Scope	class ara::shwa::Device
Thread Safety	not thread-safe rollback_semantics ShwaErrorCode::k ResourceBusy The operation could not be performed because the resource is currently busy rollback_semantics
Exception Safety	exception safe
Errors	ShwaErrorCode::k FeatureNotSupported Used when a requested feature isn’t supported

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Record: AUTOSAR/AP/record/AP_SWS_SHWA_00308
Status: valid/unmigrated
Version: AUTOSAR/AP/record/AP_SWS_SHWA_00308@rel:R25-11#a5166e8d
Content hash: a5166e8d
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Status: valid/unmigrated Version: rel:R25-11#6c55f83b Versionshistorie & Revisions (1 transition)

Current State: valid/unmigrated
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函数 GetInfo [AP_SWS_SHWA_00313] Upstream: RS_SHWA_00014, RS_SHWA_00015, RS_SHWA_00007

template <typename InfoType> ara::core::Result< typename InfoType::ReturnType > GetInfo () const noexcept;

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

Scope	class ara::shwa::Device
Thread Safety	not thread-safe rollback_semantics
Exception Safety	exception safe
Errors	ShwaErrorCode::k FeatureNotSupported Used when a requested feature isn’t supported

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Record: AUTOSAR/AP/record/AP_SWS_SHWA_00313
Status: valid/unmigrated
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Content hash: 2b662426
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Status: valid/unmigrated Version: rel:R25-11#bc5de536 Versionshistorie & Revisions (1 transition)

Current State: valid/unmigrated
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Date	Actor	Transition	Reason / Rationale	Campaign
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函数 IsAccelerator [AP_SWS_SHWA_00312] Upstream: RS_SHWA_00014, RS_SHWA_00015, RS_SHWA_00007

ara::core::Result< bool > IsAccelerator () const noexcept;

Prüft die in der Signatur bezeichnete Eigenschaft des Devices oder der Queue.

Scope	class ara::shwa::Device
Thread Safety	not thread-safe rollback_semantics
Exception Safety	exception safe
Errors	ShwaErrorCode::k ResourceBusy The operation could not be performed because the resource is currently busy

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

Record: AUTOSAR/AP/record/AP_SWS_SHWA_00312
Status: valid/unmigrated
Version: AUTOSAR/AP/record/AP_SWS_SHWA_00312@rel:R25-11#5fdb9481
Content hash: 5fdb9481
Source: https://www.autosar.org/fileadmin/standards/R25-11/AP/AUTOSAR_AP_SWS_SafeHardwareAcceleration.pdf#nameddest=AP_SWS_SHWA_00312

Status: valid/unmigrated Version: rel:R25-11#4ea7c619 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
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Active Version: AUTOSAR/AP/record/AP_SWS_SHWA_00312@rel:R25-11#4ea7c619

Date	Actor	Transition	Reason / Rationale	Campaign
2026-08-13	tool	`none` → `valid/unmigrated`	mechanically backfilled by migriere_status_backfill.py -- no per-field curation history exists yet for this record	2026-08-13-status-backfill

函数 IsCpu [AP_SWS_SHWA_00310] Upstream: RS_SHWA_00014, RS_SHWA_00015, RS_SHWA_00007

ara::core::Result< bool > IsCpu () const noexcept;

Prüft die in der Signatur bezeichnete Eigenschaft des Devices oder der Queue.

Scope	class ara::shwa::Device
Thread Safety	not thread-safe rollback_semantics
Exception Safety	exception safe
Errors	ShwaErrorCode::k ResourceBusy The operation could not be performed because the resource is currently busy

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

Record: AUTOSAR/AP/record/AP_SWS_SHWA_00310
Status: valid/unmigrated
Version: AUTOSAR/AP/record/AP_SWS_SHWA_00310@rel:R25-11#82219e46
Content hash: 82219e46
Source: https://www.autosar.org/fileadmin/standards/R25-11/AP/AUTOSAR_AP_SWS_SafeHardwareAcceleration.pdf#nameddest=AP_SWS_SHWA_00310

Status: valid/unmigrated Version: rel:R25-11#d8084c02 Versionshistorie & Revisions (1 transition)

Current State: valid/unmigrated
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Active Version: AUTOSAR/AP/record/AP_SWS_SHWA_00310@rel:R25-11#d8084c02

Date	Actor	Transition	Reason / Rationale	Campaign
2026-08-13	tool	`none` → `valid/unmigrated`	mechanically backfilled by migriere_status_backfill.py -- no per-field curation history exists yet for this record	2026-08-13-status-backfill

函数 IsGpu [AP_SWS_SHWA_00311] Upstream: RS_SHWA_00014, RS_SHWA_00015, RS_SHWA_00007

ara::core::Result< bool > IsGpu () const noexcept;

Prüft die in der Signatur bezeichnete Eigenschaft des Devices oder der Queue.

Scope	class ara::shwa::Device
Thread Safety	not thread-safe rollback_semantics
Exception Safety	exception safe
Errors	ShwaErrorCode::k ResourceBusy The operation could not be performed because the resource is currently busy

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

Record: AUTOSAR/AP/record/AP_SWS_SHWA_00311
Status: valid/unmigrated
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Content hash: bd8b731d
Source: https://www.autosar.org/fileadmin/standards/R25-11/AP/AUTOSAR_AP_SWS_SafeHardwareAcceleration.pdf#nameddest=AP_SWS_SHWA_00311

Status: valid/unmigrated Version: rel:R25-11#66b23ae4 Versionshistorie & Revisions (1 transition)

Current State: valid/unmigrated
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Active Version: AUTOSAR/AP/record/AP_SWS_SHWA_00311@rel:R25-11#66b23ae4

Date	Actor	Transition	Reason / Rationale	Campaign
2026-08-13	tool	`none` → `valid/unmigrated`	mechanically backfilled by migriere_status_backfill.py -- no per-field curation history exists yet for this record	2026-08-13-status-backfill

类 ara::shwa::Device

用户指南人工智能生成

上下文

生命周期

使用路径

错误场景

成员图

构造函数和析构函数

方法

运算符

详细视图

构造函数和析构函数

方法

运算符

详细信息

函数 Device [AP_SWS_SHWA_00302] Upstream: RS_SHWA_00015

Requirement Text as-of this release:

Curation Decisions:

Reachable Artifacts & Dependents:

函数 Device [AP_SWS_SHWA_00305] Upstream: RS_SHWA_00015

Requirement Text as-of this release:

Curation Decisions:

Reachable Artifacts & Dependents:

函数 operator= [AP_SWS_SHWA_00306] Upstream: RS_SHWA_00015

Requirement Text as-of this release:

Curation Decisions:

Reachable Artifacts & Dependents:

函数 operator= [AP_SWS_SHWA_00304] Upstream: RS_SHWA_00015

Requirement Text as-of this release:

Curation Decisions:

Reachable Artifacts & Dependents:

函数 Device [AP_SWS_SHWA_00303] Upstream: RS_SHWA_00015

Requirement Text as-of this release:

Curation Decisions:

Reachable Artifacts & Dependents:

函数 Create [AP_SWS_SHWA_00309] Upstream: RS_SHWA_00015, RS_SHWA_00006, RS_SHWA_00007

Requirement Text as-of this release:

Curation Decisions:

Reachable Artifacts & Dependents:

函数 Create [AP_SWS_SHWA_00308] Upstream: RS_SHWA_00015, RS_SHWA_00007

Requirement Text as-of this release:

Curation Decisions:

Reachable Artifacts & Dependents:

函数 GetInfo [AP_SWS_SHWA_00313] Upstream: RS_SHWA_00014, RS_SHWA_00015, RS_SHWA_00007

Requirement Text as-of this release:

Curation Decisions:

Reachable Artifacts & Dependents:

函数 IsAccelerator [AP_SWS_SHWA_00312] Upstream: RS_SHWA_00014, RS_SHWA_00015, RS_SHWA_00007

Requirement Text as-of this release:

Curation Decisions:

Reachable Artifacts & Dependents:

函数 IsCpu [AP_SWS_SHWA_00310] Upstream: RS_SHWA_00014, RS_SHWA_00015, RS_SHWA_00007

Requirement Text as-of this release:

Curation Decisions:

Reachable Artifacts & Dependents:

函数 IsGpu [AP_SWS_SHWA_00311] Upstream: RS_SHWA_00014, RS_SHWA_00015, RS_SHWA_00007

Requirement Text as-of this release:

Curation Decisions:

Reachable Artifacts & Dependents: