1991/0705/port/portdat.h (diff list | history)

1991/0614/sys/src/9/port/portdat.h:5,14 – 1991/0705/sys/src/9/port/portdat.h:5,17 (short | long | prev | next)
Add Egrp, Fgrp, Image, Palloc, Pte, Segment, Swapalloc. Remove PTE, Seg, Orig. Add Stopped state and devproc ctl requests. In Proc: change seg to pointer list, add egrp, fgrp, newtlb, procctl. Add LSEG1, LSEG2. Foramt edits. rsc Fri Mar 4 12:44:25 2005
1991/0428		typedef struct Chan Chan; typedef struct Dev Dev; typedef struct Dirtab Dirtab;
1991/0705		typedef struct Egrp Egrp;
1991/0428		typedef struct Env Env; typedef struct Envp Envp; typedef struct Envval Envval; typedef struct Etherpkt Etherpkt;
1991/0705		typedef struct Fgrp Fgrp; typedef struct Image Image;
1991/0607		typedef struct IOQ IOQ; typedef struct KIOQ KIOQ;
1991/0428		typedef struct List List;
1991/0614/sys/src/9/port/portdat.h:15,31 – 1991/0705/sys/src/9/port/portdat.h:18,34
1991/0428		typedef struct Mount Mount; typedef struct Mtab Mtab; typedef struct Note Note; typedef struct Orig Orig; typedef struct PTE PTE; typedef struct Page Page;
1991/0705		typedef struct Palloc Palloc;
1991/0428		typedef struct Pgrp Pgrp; typedef struct Proc Proc;
1991/0705		typedef struct Pte Pte;
1991/0428		typedef struct Qinfo Qinfo; typedef struct QLock QLock; typedef struct Queue Queue; typedef struct Ref Ref; typedef struct Rendez Rendez; typedef struct Seg Seg;
1991/0705		typedef struct Segment Segment;
1991/0428		typedef struct Stream Stream; typedef int Devgen(Chan*, Dirtab*, int, int, Dir*);
1991/0614/sys/src/9/port/portdat.h:177,183 – 1991/0705/sys/src/9/port/portdat.h:180,186
1991/0428		Lock; Envval *val; char name[NAMELEN]; Env *next; /* in chain of Envs for a pgrp */
1991/0705		Env *next; /* in chain of Envs for a egrp */
1991/0428		int pgref; /* # pgrps pointing here */ };
1991/0614/sys/src/9/port/portdat.h:259,315 – 1991/0705/sys/src/9/port/portdat.h:262,407
1991/0428		int flag; /* whether system posted it */ }; #define OWRPERM 0x01 /* write permission */ #define OPURE 0x02 /* original data mustn't be written */ #define OCACHED 0x04 /* cached; don't discard on exit */
1991/0607		#define OISMEM 0x08 /* origin contains real memory */ #define OSHARED 0x10 /* origin does not copy on ref/wr */
1991/0705		/* Fields for cache control of pages */ #define PG_NOFLUSH 0 #define PG_TXTFLUSH 1 #define PG_DATFLUSH 2 /* Simulated modified and referenced bits */ #define PG_MOD 0x01 #define PG_REF 0x02
1991/0428		struct Orig
1991/0705		struct Page
1991/0428		{ Lock; Orig *next; /* for allocation */ ushort nproc; /* processes using it */ ushort npage; /* sum of refs of pages in it */ ushort flag; ulong va; /* va of 0th pte */ ulong npte; /* #pte's in list */ PTE *pte; Chan *chan; /* channel deriving segment (if open) */ ushort type; /* of channel (which could be non-open) */ Qid qid; Chan *mchan;
1991/0705		ulong pa; /* Physical address in memory */ ulong va; /* Virtual address for user */ ulong daddr; /* Disc address on swap */ ushort ref; /* Reference count */ char lock; /* Software lock */ char modref; /* Simulated modify/reference bits */ char cachectl[MAXMACH]; /* Cache flushing control for putmmu */ Image *image; /* Associated text or swap image */ Page *next; /* Lru free list */ Page *prev; Page *hash; /* Image hash chains */ }; struct Swapalloc { Lock; /* Free map lock */ int free; /* Number of currently free swap pages */ char *swmap; /* Base of swap map in memory */ char *alloc; /* Round robin allocator */ char *top; /* Top of swap map */ Rendez r; /* Pager kproc idle sleep */ }swapalloc; struct Image { Ref; Chan *c; /* Channel associated with running image */ Qid qid; /* Qid for page cache coherence checks */
1991/0428		Qid mqid; ulong minca; /* base of region in chan */ ulong maxca; /* end of region in chan */
1991/0607		void (*freepg)(Page*, int); /* how to free pages for this origin */ Page (*allocpg)(int, Orig*, ulong);
1991/0705		Chan *mchan; ushort type; /* Device type of owning channel */ Segment *s; /* TEXT segment for image if running, may be null */ Image *hash; /* Qid hash chains */ Image *next; /* Free list */
1991/0428		}; struct Page
1991/0705		struct Pte
1991/0428		{ Orig *o; /* origin of segment owning page */ ulong va; /* virtual address */ ulong pa; /* physical address */ ushort ref; Page *next; Page *prev;
1991/0705		union { Pte *next; /* Free list */ Page *pages[PTEPERTAB]; /* Page map for this chunk of pte */ };
1991/0428		};
1991/0705		/* Segment types */ #define SG_TYPE 007 /* Mask type of segment */ #define SG_TEXT 000 #define SG_DATA 001 #define SG_BSS 002 #define SG_STACK 003 #define SG_SHARED 004 #define SG_PHYSICAL 005 /* Segment flags */ #define SG_RONLY 040 /* Segment is read only */ #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) #define onswap(s) (((ulong)s)&PG_ONSWAP) #define SEGMAXSIZE (SEGMAPSIZE*PTEMAPMEM) struct Segment { Ref; QLock lk; ushort steal; /* Page stealer lock */ Segment *next; /* free list pointers */ ushort type; /* segment type */ ulong base; /* virtual base */ ulong top; /* virtual top */ ulong size; /* size in pages */ ulong fstart; /* start address in file for demand load */ ulong flen; /* length of segment in file */ Image *image; /* image in file system attached to this segment */ Page *(*pgalloc)(ulong addr);/* SG_PHYSICAL page allocator */ void (*pgfree)(Page *); /* SG_PHYSICAL page free */ Pte *map[SEGMAPSIZE]; /* segment pte map */ };
1991/0428		struct Pgrp { Ref; /* also used as a lock when mounting */ Pgrp *next;
1991/0705		Pgrp *next; /* free list */
1991/0428		int index; /* index in pgrp table */ ulong pgrpid; char user[NAMELEN]; int nmtab; /* highest active mount table entry, +1 */ int nenv; /* highest active env table entry, +1 */ QLock debug; /* single access via devproc.c */ Mtab *mtab;
1991/0705		}; struct Egrp { Ref; Egrp *next; int nenv; /* highest active env table entry, +1 */
1991/0428		Envp *etab; };
1991/0705		#define NFD 100 struct Fgrp { Ref; Fgrp *next; Chan *fd[NFD]; int maxfd; /* highest fd in use */ }; #define PGHSIZE 512 struct Palloc { Lock; ulong addr; int active; Page *page; /* base of Page structures, indexed by phys page number */ ulong minppn; /* index of first usable page */ Page *head; /* most recently used */ Page *tail; /* least recently used */ ulong freecount; /* how many pages on free list now */ ulong user; /* how many user pages */ Page *hash[PGHSIZE]; Lock hashlock; Rendez r; /* Sleep for free mem */ QLock pwait; /* Queue of procs waiting for memory */ int wanted; /* Do the wakeup at free */ };
1991/0514		enum /* Argument to forkpgrp call */ { FPall = 0, /* Concession to back portablility */
1991/0614/sys/src/9/port/portdat.h:324,342 – 1991/0705/sys/src/9/port/portdat.h:416,424
1991/0428		*/
1991/0605		enum { SSEG, TSEG, DSEG, BSEG, ESEG, LSEG, NSEG
1991/0705		SSEG, TSEG, DSEG, BSEG, ESEG, LSEG, SEG1, SEG2, NSEG
1991/0605		};
1991/0428		struct Seg { Proc *proc; /* process owning this segment */ Orig *o; /* root list of pte's */ ulong minva; /* va of 0th pte (not necessarily Seg->o->va) */ ulong maxva; /* va of last pte */ PTE *mod; /* list of modified pte's */
1991/0606		ulong endseg; /* segments end */
1991/0428		};                  /* * Process states */
1991/0614/sys/src/9/port/portdat.h:354,362 – 1991/0705/sys/src/9/port/portdat.h:436,454
1991/0428		Inwait, Wakeme, Broken,
1991/0705		Stopped,
1991/0428		}; /*
1991/0705		* devproc requests */ enum { Proc_stopme = 1, Proc_exitme = 2, }; /*
1991/0428		* Proc.time */ enum
1991/0614/sys/src/9/port/portdat.h:379,385 – 1991/0705/sys/src/9/port/portdat.h:471,477
1991/0428		QLock *qlock; /* address of qlock being queued for DEBUG */ int state; Page *upage; /* BUG: should be unlinked from page list */ Seg seg[NSEG];
1991/0705		Segment *seg[NSEG];
1991/0428		ulong pid; int nchild; QLock wait; /* exiting children to be waited for */
1991/0614/sys/src/9/port/portdat.h:386,392 – 1991/0705/sys/src/9/port/portdat.h:478,488
1991/0428		Waitmsg waitmsg; /* this is large but must be addressable */ Proc *child; Proc *parent; Pgrp *pgrp;
1991/0705		Pgrp *pgrp; /* Process group for notes and namespace */ Egrp *egrp; /* Environment group */ Fgrp *fgrp; /* File descriptor group */
1991/0428		ulong parentpid; ulong time[6]; /* User, Sys, Real; child U, S, R */ short exiting;
1991/0614/sys/src/9/port/portdat.h:400,407 – 1991/0705/sys/src/9/port/portdat.h:496,504
1991/0428		int kp; /* true if a kernel process */
1991/0513		Proc *palarm; /* Next alarm time */ ulong alarm; /* Time of call */
1991/0614		int hasspin;
1991/0513
1991/0705		int hasspin; /* I hold a spin lock */ int newtlb; /* Pager has touched my tables so I must flush */ int procctl; /* Control for /proc debugging */
1991/0504		/*
1991/0507		* machine specific MMU goo
1991/0504		*/
1991/0614/sys/src/9/port/portdat.h:408,421 – 1991/0705/sys/src/9/port/portdat.h:505,510
1991/0507		PMMU;
1991/0428		}; struct PTE { Proc *proc; /* process owning this PTE (0 in Orig) */ PTE *nextmod; /* next at this va */ PTE *nextva; /* next in this proc at higher va */ Page *page; };                  /* * operations available to a queue */
1991/0614/sys/src/9/port/portdat.h:504,513 – 1991/0705/sys/src/9/port/portdat.h:593,604
1991/0428		extern char user[NAMELEN]; extern char *errstrtab[]; extern char *statename[];
1991/0705		extern Palloc palloc; extern Image swapimage;
1991/0428		#define CHDIR 0x80000000L #define CHAPPEND 0x40000000L #define CHEXCL 0x20000000L
1991/0705		#define CHDIR 0x80000000L #define CHAPPEND 0x40000000L #define CHEXCL 0x20000000L
1991/0428