typedef struct Data Data;

typedef struct Data Data;
typedef struct Page Page;
typedef struct Proc Proc;
typedef struct Seg Seg;

enum {
Psegment = 0,
Pfd,
Pfpregs,
Pkregs,
Pnoteid,
Pns,
Pproc,
Pregs,
Pstatus,
Npfile,

Pagesize = 1024, /* need not relate to kernel */
};

struct Data {
ulong len;
char data[1];
};

struct Seg {
char* name;
uvlong offset;
uvlong len;
Page** pg;
ulong npg;
};

struct Page {
Page* link;
ulong len;
char* data;

/* when page is written, these hold the ptr to it */
int written;
int type;
ulong pid;
uvlong offset;
};

struct Proc {
Proc *link;
long pid;
Data* d[Npfile];
Seg** seg; /* memory segments */
int nseg;
Seg* text; /* text file */
};

extern char *pfile[Npfile];

Proc* snap(long pid, int usetext);
void* emalloc(ulong);
void* erealloc(void*, ulong);
char* estrdup(char*);
void writesnap(Biobuf*, Proc*);
Page* datapage(char *p, long len);
Proc* readsnap(Biobuf *b);
Page* findpage(Proc *plist, long pid, int type, uvlong off);

int debug;