1990/0312/port/stream.c (diff list | history)

1990/0312/sys/src/9/port/stream.c:7,12 – 1990/0321/sys/src/9/port/stream.c:7,17 (short | long | prev | next)
1990/0227		#include "errno.h" #include "devtab.h"
1990/0321		enum { Nclass=4, /* number of block classes */ Nlds=32, /* max number of pushable line disciplines */ };
1990/0312		/* * process end line discipline */
1990/0312/sys/src/9/port/stream.c:15,37 – 1990/0321/sys/src/9/port/stream.c:20,41
1990/0227
1990/0312		/* * line disciplines that can be pushed * * WARNING: this table should be the result of configuration */ extern Qinfo noetherinfo; extern Qinfo dkmuxinfo; extern Qinfo urpinfo;
1990/0227		static Qinfo *lds[] = { &noetherinfo,
1990/0312		&dkmuxinfo, &urpinfo,
1990/0227		0 };
1990/0321		static Qinfo *lds[Nlds+1];
1990/0227		enum { Nclass=4, };
1990/0321		void newqinfo(Qinfo *qi) { int i;
1990/0227
1990/0321		for(i=0; i<Nlds && lds[i]; i++) if(lds[i] == qi) return; if(i == Nlds) panic("pushable"); lds[i] = qi; }
1990/0227		/* * All stream structures are ialloc'd at boot time */
1990/0312/sys/src/9/port/stream.c:52,59 – 1990/0321/sys/src/9/port/stream.c:56,63
1990/0227		} Bclass; Bclass bclass[Nclass]={ { 0 }, { 64 }, { 512 },
1990/0321		{ 68 }, { 260 },
1990/0227		{ 4096 }, };
1990/0312/sys/src/9/port/stream.c:89,95 – 1990/0321/sys/src/9/port/stream.c:93,98
1990/0227		} }                  /* * allocate a block */
1990/0312/sys/src/9/port/stream.c:170,176 – 1990/0321/sys/src/9/port/stream.c:173,180
1990/0312		}
1990/0227		bcp->last = bp; unlock(bcp);
1990/0312		wakeup(&bcp->r);
1990/0321		if(bcp->r.p) wakeup(&bcp->r);
1990/0227		} /*
1990/0312/sys/src/9/port/stream.c:717,723 – 1990/0321/sys/src/9/port/stream.c:721,727
1990/0227		void stputq(Queue *q, Block *bp) { int i;
1990/0321		int delim;
1990/0227		if(bp->type == M_HANGUP){ freeb(bp);
1990/0312/sys/src/9/port/stream.c:724,730 – 1990/0321/sys/src/9/port/stream.c:728,736
1990/0227		q->flag |= QHUNGUP; q->other->flag |= QHUNGUP;
1990/0312		wakeup(&q->other->r);
1990/0321		delim = 1;
1990/0227		} else {
1990/0321		delim = 0;
1990/0227		lock(q); if(q->first) q->last->next = bp;
1990/0312/sys/src/9/port/stream.c:731,746 – 1990/0321/sys/src/9/port/stream.c:737,757
1990/0227		else q->first = bp;
1990/0312		q->len += BLEN(bp);
1990/0321		delim = bp->flags & S_DELIM;
1990/0312		while(bp->next) { bp = bp->next; q->len += BLEN(bp);
1990/0321		delim |= bp->flags & S_DELIM;
1990/0312		}
1990/0227		q->last = bp; if(q->len >= Streamhi)
1990/0321		if(q->len >= Streamhi){
1990/0227		q->flag |= QHIWAT;
1990/0321		delim = 1; }
1990/0227		unlock(q); } wakeup(&q->r);
1990/0321		if(delim) wakeup(&q->r);
1990/0227		} /*