# service.h ## **Overview** **Related Modules:** [Samgr](Samgr.md) **Description:** Provides basic types and constants of services. This file is mainly used for service development. This file provides basic capabilities such as lifecycle functions of services, inherited macros, and task configuration. **Since:** 1.0 **Version:** 1.0 ## **Summary** ## Data Structures

Data Structure Name	Description
TaskConfig	Defines task configurations for a service.
Service	Indicates the basic type of a service.

## Macros

Macro Name and Value	Description
INHERIT_SERVICE	Indicates the macro used to inherit the members from the service class.

## Typedefs

Typedef Name	Description
TaskType	typedef enum TaskType Enumerates task types.
SpecifyTag	typedef enum SpecifyTag Specifies the tag for the task shared by multiple services.
TaskPriority	typedef enum TaskPriority Enumerates task priority.

Typedef Name

Description

TaskType

typedef enum TaskType

Enumerates task types.

SpecifyTag

typedef enum SpecifyTag

Specifies the tag for the task shared by multiple services.

TaskPriority

typedef enum TaskPriority

Enumerates task priority.

## Enumerations

Enumeration Name	Description
TaskType { SHARED_TASK = 0, SINGLE_TASK = 1, SPECIFIED_TASK = 2, NO_TASK = 0xFF }	Enumerates task types.
SpecifyTag { LEVEL_HIGH = 0, LEVEL_MIDDLE = 1, LEVEL_LOW = 2, LEVEL_CUSTOM_BEGIN }	Specifies the tag for the task shared by multiple services.
TaskPriority { PRI_LOW = 9, PRI_BELOW_NORMAL = 16, PRI_NORMAL = 24, PRI_ABOVE_NORMAL = 32, PRI_BUTT = 39 }	Enumerates task priority.