#ifndef __CR_PAGEMAP_H__
#define __CR_PAGEMAP_H__

#include <sys/types.h>
#include "int.h"

#include "common/list.h"

struct vma_area;

#define PAGEMAP_PFN_OFF(addr) (PAGE_PFN(addr) * sizeof(u64))

typedef struct {
	pid_t pid;			  /* which process it belongs */
	unsigned long start;		  /* start of area */
	unsigned long end;		  /* end of area */
	const struct list_head *vma_head; /* list head of VMAs we're serving */
	u64 *map;			  /* local buffer */
	size_t map_len;			  /* length of a buffer */
	int fd;				  /* file to read PMs from */
} pmc_t;

#define PMC_INIT \
	(pmc_t)  \
	{        \
	}

extern int pmc_init(pmc_t *pmc, pid_t pid, const struct list_head *vma_head, size_t size);
extern u64 *pmc_get_map(pmc_t *pmc, const struct vma_area *vma);
extern void pmc_fini(pmc_t *pmc);

#endif /* __CR_PAGEMAP_H__ */
