1992/0625/port/segment.c (diff list | history)

1992/0621/sys/src/9/port/segment.c:15,29 – 1992/0625/sys/src/9/port/segment.c:15,28 (short | long | prev | next)
1991/0705		#define IHASHSIZE 64 #define ihash(s) imagealloc.hash[s%IHASHSIZE] struct Imagealloc
1992/0625		struct
1991/0705		{ Lock; Image *free; Image *hash[IHASHSIZE];
1992/0625		QLock ireclaim;
1991/0705		}imagealloc;
1991/0706		static QLock ireclaim;
1991/0705		void initseg(void) {
1992/0621/sys/src/9/port/segment.c:254,282 – 1992/0625/sys/src/9/port/segment.c:253,280
1991/0706		{ Page *p; if(!canqlock(&ireclaim)) /* Somebody is already cleaning the page cache */
1992/0625		/* Somebody is already cleaning the page cache */ if(!canqlock(&imagealloc.ireclaim))
1991/0706		return;
1992/0404		lock(&palloc); for(p = palloc.head; p; p = p->next) { if(p->image) if(p->ref == 0) if(p->image != &swapimage) { lockpage(p);
1992/0625		if(p->image && p->ref == 0 && p->image != &swapimage) { lock(p);
1992/0225		if(p->ref == 0)
1992/0404		uncachepage(p); unlockpage(p);
1992/0625		unlock(p);
1992/0314		}
1991/0706		}
1992/0404		unlock(&palloc);
1991/0706		qunlock(&ireclaim);
1992/0625		qunlock(&imagealloc.ireclaim);
1991/0706		} void
1991/0705		putimage(Image *i) { Image *f, **l; Chan *c;
1992/0625		Image *f, **l;
1991/0705		if(i == &swapimage) return;
1992/0621/sys/src/9/port/segment.c:301,307 – 1992/0625/sys/src/9/port/segment.c:299,305
1991/0705		imagealloc.free = i; unlock(&imagealloc); close(c); /* Delay close because we could error */
1992/0625		close(c);
1991/0705		return; } unlock(i);