harmony 鸿蒙Time and Time Zone Subsystem

  • 2023-10-30
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Time and Time Zone Subsystem

Introduction

The time and time zone subsystem provides OpenHarmony with the capability of managing the system time, time zone, and timing.

  • Time and time zone management

    Manages the system time and time zone in a unified manner, including setting and obtaining the system time, date, and time zone, and obtaining the system startup time.

  • Timing management

    Provides the system timer capability, including creating, starting, stopping, and destroying timers. There are three types of timers: system startup timer, system time timer, and wakeup timer.

System Architecture

Figure 1 Architecture of the time and time zone subsystem

Directory Structure

The source code of the time and time zone subsystem is stored in the /base/time directory.

The directory structure is as follows:

/base/time/time_service
├── etc                      # Process configuration files
├── figures                  # Architecture diagram
├── framework/js/napi        # JS APIs that are parsed to NAPIs
├── interfaces/inner_api     # APIs provided for external systems
├── services                 # Service implementation
│   └── profile              # System service and process configuration files
└── utils                    # Utilities, for example, log utility

Repositories Involved

time_service

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