#ifndef _KERNEL_PROC_PROC_H
#define _KERNEL_PROC_PROC_H

#include <aux/compiler.h>
#include <libk/std.h>
#include <sync/spin_lock.h>
#include <sys/mm.h>

#if defined(__x86_64__)
#include <amd64/gdt.h>  /* KSTACK_SIZE */
#include <amd64/proc.h> /* USTACK_SIZE */
#endif

/// Process is ready to run
#define PROC_READY  0
/// Process marked garbage collection
#define PROC_DEAD   1


struct cpu;

struct proc_mapping {
  struct proc_mapping* next;
  uintptr_t paddr;
  uintptr_t vaddr;
  size_t size;
} PACKED;

struct procw;

struct proc {
  struct proc* next;
  struct proc_mapping* mappings; /* pd.lock implicitly protects this field */
  struct proc_platformdata pdata;
  struct pd pd;
  spin_lock_t lock;
  struct cpu* cpu;
  struct procw* procw; /* link to it's global struct */
  atomic_int state;
};

/*
 * struct proc is a member of a CPU's proc_run_q.
 * struct procw is a process wrapper that is a member of
 * a global process list.
 */
struct procw {
  struct procw* next;
  struct proc* proc;
};

void proc_sched (void);
void proc_kill (struct proc* proc);
void proc_init (void);

#endif // _KERNEL_PROC_PROC_H