/* * Text structure. * One allocated per pure * procedure on swap device. * Manipulated by text.c */struct text{	short	x_daddr;	/* disk address of segment (relative to swplo) */	short	x_caddr;	/* core address, if loaded */	short	x_size;		/* size (clicks) */	struct inode *x_iptr;	/* inode of prototype */	char	x_count;	/* reference count */	char	x_ccount;	/* number of loaded references */	char	x_flag;		/* traced, written flags */};extern struct text text[];#define	XTRC	01		/* Text may be written, exclusive use */#define	XWRIT	02		/* Text written into, must swap out */#define	XLOAD	04		/* Currently being read from file */#define	XLOCK	010		/* Being swapped in or out */#define	XWANT	020		/* Wanted for swapping */