40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
#pragma once
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#include <efi.h>
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#include <memory/pmm.h>
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#include <common.h>
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#define TASK_STACK_SIZE (PAGE_SIZE * 4) // 16 KB kernel stack per task
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#define TASK_MAX 32
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#define TASK_NAME_LEN 32
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typedef enum {
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TASK_STATE_READY,
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TASK_STATE_RUNNING,
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TASK_STATE_TERMINATED,
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} task_state_t;
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typedef struct task {
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UINT64 rsp; // saved stack pointer (for context switch)
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UINT32 id;
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task_state_t state;
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char name[TASK_NAME_LEN];
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void* stack_base; // base address of kernel stack
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struct task* next; // circular linked list
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} task_t;
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// Create a new task. Returns task pointer or NULL on failure.
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task_t* task_create(const char* name, void (*entry)(void));
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// Yield CPU to next ready task (cooperative)
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void yield(void);
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// Start the scheduler — does not return. Picks first READY task and runs it.
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void scheduler_run(void);
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// Called by a task when it finishes — marks as TERMINATED and yields
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void task_exit(void);
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// Get current running task
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task_t* scheduler_current(void);
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