task_control_block.hpp File Reference

#include <cpu_io.h>
#include <etl/flags.h>
#include <etl/intrusive_links.h>
#include <array>
#include <cstddef>
#include <cstdint>
#include "file_descriptor.hpp"
#include "resource_id.hpp"
#include "task_fsm.hpp"

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Classes
struct	TaskAuxData
	非调度热路径的任务辅助数据 More...
struct	TaskControlBlock
	任务控制块，管理进程/线程的核心数据结构 More...
struct	TaskControlBlock::PriorityCompare
	任务优先级比较函数，优先级数值越小，优先级越高 More...
struct	TaskControlBlock::WakeTickCompare
	任务唤醒时间比较函数，时间越早优先级越高 More...
struct	TaskControlBlock::SchedInfo
	基础调度信息 More...
union	TaskControlBlock::SchedData
	不同调度器的专用字段 (互斥使用) More...

Namespaces
namespace	clone_flag
	Clone 标志位常量 (用于 sys_clone 系统调用)

Typedefs
using	Pid = size_t
	进程 ID 类型
using	ThreadEntry = void(*)(void *)
	线程入口函数类型
using	CloneFlags = etl::flags< uint64_t, clone_flag::kAllMask >
	克隆标志位
using	CpuAffinity = etl::flags< uint64_t >
	CPU 亲和性位掩码
using	ThreadGroupLink = etl::bidirectional_link< 0 >
	线程组侵入式链表节点类型

Enumerations
enum class	SchedPolicy : uint8_t { kRealTime = 0 , kNormal = 1 , kIdle = 2 , kPolicyCount }
	调度策略 More...

Variables
constexpr uint64_t	clone_flag::kVm = 0x00000100
	共享地址空间
constexpr uint64_t	clone_flag::kFs = 0x00000200
	共享文件系统信息
constexpr uint64_t	clone_flag::kFiles = 0x00000400
	共享文件描述符表
constexpr uint64_t	clone_flag::kSighand = 0x00000800
	共享信号处理器
constexpr uint64_t	clone_flag::kParent = 0x00008000
	保持相同父进程
constexpr uint64_t	clone_flag::kThread = 0x00010000
	同一线程组
constexpr uint64_t	clone_flag::kAllMask
	全部标志掩码

Typedef Documentation

CloneFlags

using CloneFlags = etl::flags<uint64_t, clone_flag::kAllMask>

克隆标志位

Definition at line 48 of file task_control_block.hpp.

CpuAffinity

using CpuAffinity = etl::flags<uint64_t>

CPU 亲和性位掩码

Definition at line 51 of file task_control_block.hpp.

Pid

using Pid = size_t

进程 ID 类型

Copyright

Copyright The SimpleKernel Contributors

Definition at line 20 of file task_control_block.hpp.

ThreadEntry

using ThreadEntry = void (*)(void*)

线程入口函数类型

Definition at line 23 of file task_control_block.hpp.

ThreadGroupLink

using ThreadGroupLink = etl::bidirectional_link<0>

线程组侵入式链表节点类型

Definition at line 73 of file task_control_block.hpp.

Enumeration Type Documentation

SchedPolicy

enum class SchedPolicy : uint8_t

strong

调度策略

Task status type alias — backed by FSM state IDs

Todo:

为什么要定义 TaskStatusId 与 TaskStatus 两个命名空间？可以直接用 TaskStatus 吗？

Enumerator
kRealTime	实时任务 (最高优先级)
kNormal	普通任务
kIdle	空闲任务 (最低优先级)
kPolicyCount	策略数量

Definition at line 61 of file task_control_block.hpp.

                       : uint8_t {
  kRealTime = 0,
  kNormal = 1,
  kIdle = 2,
  kPolicyCount
};