1991/1011/port/portdat.h (diff list | history)

1991/1002/sys/src/9/port/portdat.h:16,22 – 1991/1011/sys/src/9/port/portdat.h:16,22 (short | long | prev | next)
Rename Mtab to Mhead. Add Proc.mnthash, RWlock. Rename CMOUNT to CMSG. Comment edit. In Mount: remove Ref, term, rename c to to, add head. In Mhead: rename c to from, mnt to mount, add hash. Add MNTHASH, Proc.ns, Proc.mnthash. rsc Fri Mar 4 12:44:25 2005
1991/0607		typedef struct KIOQ KIOQ;
1991/0428		typedef struct List List; typedef struct Mount Mount; typedef struct Mtab Mtab;
1991/1011		typedef struct Mhead Mhead;
1991/0428		typedef struct Note Note; typedef struct Page Page;
1991/0705		typedef struct Palloc Palloc;
1991/1002/sys/src/9/port/portdat.h:28,33 – 1991/1011/sys/src/9/port/portdat.h:28,34
1991/0428		typedef struct Queue Queue; typedef struct Ref Ref; typedef struct Rendez Rendez;
1991/1011		typedef struct RWlock RWlock;
1991/0705		typedef struct Segment Segment;
1991/0428		typedef struct Stream Stream;
1991/0926		typedef struct Waitq Waitq;
1991/1002/sys/src/9/port/portdat.h:59,64 – 1991/1011/sys/src/9/port/portdat.h:60,73
1991/1002		int locked; /* flag */
1991/0428		};
1991/1011		struct RWlock { Lock; /* Lock modify lock */ QLock x; /* Mutual exclusion lock */ QLock k; /* Lock for waiting writers held for readers */ int readers; /* Count of readers in lock */ };
1991/0428		struct Alarm { List;
1991/1002/sys/src/9/port/portdat.h:119,126 – 1991/1011/sys/src/9/port/portdat.h:128,135
1991/0428		* Chan.flags */
1991/0724		#define COPEN 1 /* for i/o */ #define CMOUNT 2 /* is result of a mount/bind */ #define CCREATE 4 /* permits creation if CMOUNT */
1991/1011		#define CMSG 2 /* is the message channel for a mount */ #define CCREATE 4 /* permits creation if c->mnt */
1991/0724		#define CCEXEC 8 /* close on exec */ #define CFREE 16 /* not in use */
1991/0428
1991/1002/sys/src/9/port/portdat.h:242,258 – 1991/1011/sys/src/9/port/portdat.h:251,267
1991/0607
1991/0428		struct Mount { Ref; /* also used as a lock when playing lists */ short term; /* terminates list */ ulong mountid; Mount *next; Chan *c; /* channel replacing underlying channel */
1991/1011		Mhead *head; Chan *to; /* channel replacing underlying channel */
1991/0428		}; struct Mtab
1991/1011		struct Mhead
1991/0428		{ Chan *c; /* channel mounted upon */ Mount *mnt; /* what's mounted upon it */
1991/1011		Chan *from; /* channel mounted upon */ Mount *mount; /* what's mounted upon it */ Mhead *hash; /* Hash chain */
1991/0428		}; enum{
1991/1002/sys/src/9/port/portdat.h:362,367 – 1991/1011/sys/src/9/port/portdat.h:371,378
1991/0705
1991/0806		#define RENDHASH 32 #define REND(p,s) ((p)->rendhash[(s)%RENDHASH])
1991/1011		#define MNTHASH 32 #define MOUNTH(p,s) ((p)->mnthash[(s)->qid.path%MNTHASH])
1991/0806
1991/0428		struct Pgrp {
1991/1002/sys/src/9/port/portdat.h:370,378 – 1991/1011/sys/src/9/port/portdat.h:381,389
1991/0428		int index; /* index in pgrp table */ ulong pgrpid; char user[NAMELEN]; int nmtab; /* highest active mount table entry, +1 */ QLock debug; /* single access via devproc.c */ Mtab *mtab;
1991/1011		RWlock ns; /* Namespace many read/one write lock */ Mhead *mnthash[MNTHASH];
1991/0806		Proc *rendhash[RENDHASH]; /* Rendezvous tag hash */
1991/0705		};