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tree-os / src / include / task.h
#ifndef TASK_H
#define TASK_H

#include <alloc.h>
#include <list.h>
#include <message.h>
#include <stdbool.h>
#include <stdint.h>

extern void initTasking();

typedef struct __attribute__((packed)) {
    uint32_t eax, ebx, ecx, edx, esi, edi, esp, ebp, eip, eflags, cr3;
} Registers;

typedef struct Task {
    Registers registers;
    void *stack;
    ListElement *messages;
    uint32_t ticksLeft;
    uint32_t timerTicks;
    AllocationData *allocationData;
} Task;

extern Task *currentTask;

extern void initTasking();
extern void createTask(Task *task, uint32_t mainFunction, uint32_t flags,
                       uint32_t *pagedir);

extern void yield();
extern void yields();
extern void switchTask(Registers *old, Registers *new);
extern void schedule(Task *task);
extern void destroyCurrentTask();

extern void setRunningTask(Task *task);
extern void sendMessage(Task *task, Message *message);

extern Message *popMessage(Task *task);

extern bool isTaskQueueEmpty();

extern ListElement *getAllTasks();

#endif