DFX

• Introduction
• Architecture
• Directory Structure
• Repositories Involved

Introduction

Design for X (DFX) refers to the software design that aims to improve the quality attribute in OpenHarmony. It mainly consists of two parts: design for reliability (DFR) and design for testability (DFT).

The DFX subsystem provides the following capabilities:

• HiLog: Implements the logging capability.

• HiEvent: Implements the event logging capability.

• Hiview: Implements the logging task capability.

Architecture

Figure 1 Architecture of the DFX subsystem

Directory Structure

base/hiviewdfx        # DFX base repository, which stores compilation-related configurations
├── hiview_lite    # Hiview_lite module, which implements the logging task capability for the mini system
├── hilog_lite     # HiLog_lite module, which implements the logging capability for the mini and small systems
├── hievent_lite   # HiEvent_lite module, which implements the event logging capability for the mini system

Repositories Involved

DFX subsystem

hiviwdfx_hilog_lite

hiviwdfx_hiview_lite

hiviwdfx_hievent_lite