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| author | cinap_lenrek <cinap_lenrek@gmx.de> | 2013-05-27 01:04:53 +0200 |
|---|---|---|
| committer | cinap_lenrek <cinap_lenrek@gmx.de> | 2013-05-27 01:04:53 +0200 |
| commit | 24b908be8a3edb75a63683eb5008aba3c9a1bb52 (patch) | |
| tree | 91720bacbebe2551dcc0be6bcbd4a5b1cbcfd283 | |
| parent | 3e567afed56b92325150f76c6f36646184d6a650 (diff) | |
| download | plan9front-24b908be8a3edb75a63683eb5008aba3c9a1bb52.tar.xz | |
kernel: image reclaim pauses
get a bit more verbose about process image exhaustion and make
imagreclaim() try to get at least one image on the freelist.
use rsrcwait() to notify the state, and call freebroken() in
case imagereclaim() couldnt free any images.
| -rw-r--r-- | sys/src/9/port/segment.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/sys/src/9/port/segment.c b/sys/src/9/port/segment.c index 98e9cbfa0..d3ad7cfbb 100644 --- a/sys/src/9/port/segment.c +++ b/sys/src/9/port/segment.c @@ -264,7 +264,10 @@ attachimage(int type, Chan *c, ulong base, ulong len) while(!(i = imagealloc.free)) { unlock(&imagealloc); imagereclaim(); - sched(); + if(!imagealloc.free){ + freebroken(); /* can use the memory */ + resrcwait("no image after reclaim"); + } lock(&imagealloc); } @@ -328,7 +331,7 @@ imagereclaim(void) * end of the list (see putpage) so start there and work * backward. */ - for(p = palloc.tail; p && p->image && n<1000; p = p->prev) { + for(p = palloc.tail; p && p->image && (n<1000 || !imagealloc.free); p = p->prev) { if(p->ref == 0 && canlock(p)) { if(p->ref == 0) { n++; |