44 lines
905 B
C
44 lines
905 B
C
#pragma once
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#include "list.h"
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#include "memory.h"
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#include <stdint.h>
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extern struct task *current_task;
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enum status { ZOMBIE, THREAD, RUN, WAIT, SLEEP, STOPPED, FORKED };
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enum owner { OWNER_KERNEL, OWNER_USER };
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#define STACK_SIZE PAGE_SIZE * 4
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struct task {
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uint8_t *esp;
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uint8_t *esp0;
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uint32_t *cr3; // physical
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uint32_t *heap; // virtual
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uint32_t *eip;
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uint16_t pid;
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uint8_t status;
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uint8_t uid;
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struct task *daddy;
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struct task *child;
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struct list **signals;
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struct task *next;
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struct task *prev;
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};
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void scheduler(void);
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void switch_to_task(struct task *next_task);
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struct task *create_task(uint8_t uid);
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int8_t create_kernel_task(void);
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void remove_task(struct task *task);
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struct task *copy_task(const struct task *task);
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void kfork(struct task *daddy);
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void zombify_task(struct task *task);
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// utils
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void exec_fn(void (*fn)(void));
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uint16_t fork(void);
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uint16_t wait(void);
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