task_struct Struct Reference

#include <scheduler.h>

Collaboration diagram for task_struct:

Data Fields
cpu_context	cpu_context
int64_t	state
int64_t	counter
int64_t	priority
int64_t	preempt_count

Detailed Description

Structure that describes a process.

This struct has the following members:

• task_struct.cpu_context: A struct for the registers to be saved for the process.
• task_struct.state: The state of the currently running task.
• task_struct.counter: Used to determine how long the current task has been running. Decreases by 1 each timer tick. When it reaches 0 another task is scheduled.
• task_struct.priority: When a new task is scheduled its priority is copied to counter. We regulate the amount of cpu time the task gets relative to other tasks.
• task_struct.preempt_count: Non-zero value indicates critical task, that must not be interrupted.

Field Documentation

counter

int64_t task_struct::counter

Used to determine how long the current task has been running.

cpu_context

cpu_context task_struct::cpu_context

A struct for the registers to be saved for the process.

preempt_count

int64_t task_struct::preempt_count

Non-zero value indicates critical task, that must not be interrupted.

priority

int64_t task_struct::priority

When a new task is scheduled its priority is copied to counter.

state

int64_t task_struct::state

The state of the currently running task.

---

The documentation for this struct was generated from the following file:

• include/kernel/scheduler.h