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#ifndef _SCHED_H
#define _SCHED_H
#include <signal.h>
#include <stdint.h>
#include <unistd.h>
#define TSTATE_RUNNING 0
#define TSTATE_INTERRUPTIBLE 1
#define TSTATE_UNINTERRUPTIBLE 2
#define TSTATE_ZOMBIE 3
#define TSTATE_STOPPED 4
struct tss_struct {
uint32_t prevt;
uint32_t esp0;
uint32_t ss0;
uint32_t esp1;
uint32_t ss1;
uint32_t esp2;
uint32_t ss2;
uint32_t cr3;
uint32_t eip;
uint32_t eflags;
uint32_t eax;
uint32_t ecx;
uint32_t edx;
uint32_t ebx;
uint32_t esp;
uint32_t ebp;
uint32_t esi;
uint32_t edi;
uint32_t es;
uint32_t cs;
uint32_t ss;
uint32_t ds;
uint32_t fs;
uint32_t gs;
uint32_t ldt;
uint32_t io_map;
} __attribute__((packed));
/*
* WARNING: do not modify this structure
* unless the offsets defined in traps.s
* are updated
*/
struct task_struct {
pid_t pid;
int state;
uint32_t signal;
int ctty;
unsigned int alarm;
void *sig_handlers[NRSIG];
struct tss_struct tss;
} __attribute__((packed));
extern struct task_struct *ctask;
extern uint32_t ticks;
void sched_init(void);
void reschedule(void);
#endif
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