1992/0303/port/portdat.h (diff list | history)

1992/0222/sys/src/9/port/portdat.h:311,316 – 1992/0303/sys/src/9/port/portdat.h:311,318 (short | long | prev | next)
Add swapalloc.highwater, .headroom in place ofHIGHWATER, MAXHEADROOM constants. Format edit. rsc Fri Mar 4 12:44:25 2005
1991/0724		char *alloc; /* Round robin allocator */ char *top; /* Top of swap map */ Rendez r; /* Pager kproc idle sleep */
1992/0303		ulong highwater; /* Threshold beyond which we must page */ ulong headroom; /* Space pager attempts to clear below highwater */
1991/0705		}swapalloc; struct Image
1992/0222/sys/src/9/port/portdat.h:343,352 – 1992/0303/sys/src/9/port/portdat.h:345,352
1991/0705		#define SG_SHARED 004 #define SG_PHYSICAL 005 /* Segment flags */ #define SG_RONLY 040 /* Segment is read only */
1992/0303		#define SG_RONLY 040 /* Segment is read only */
1991/0705		#define HIGHWATER ((conf.npage*5)/100) #define MAXHEADROOM HIGHWATER*2 /* Silly but OK for debug */ #define PG_ONSWAP 1 #define pagedout(s) (((ulong)s)==0 || (((ulong)s)&PG_ONSWAP)) #define swapaddr(s) (((ulong)s)&~PG_ONSWAP)