diff options
Diffstat (limited to 'src/runtime/mcache.go')
| -rw-r--r-- | src/runtime/mcache.go | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/runtime/mcache.go b/src/runtime/mcache.go index 440120cdfe..a1d04d2f8a 100644 --- a/src/runtime/mcache.go +++ b/src/runtime/mcache.go @@ -253,6 +253,14 @@ func (c *mcache) allocLarge(size uintptr, noscan bool) *mspan { // Put the large span in the mcentral swept list so that it's // visible to the background sweeper. mheap_.central[spc].mcentral.fullSwept(mheap_.sweepgen).push(s) + + // Adjust s.limit down to the object-containing part of the span. + // + // This is just to create a slightly tighter bound on the limit. + // It's totally OK if the garbage collector, in particular + // conservative scanning, can temporarily observes an inflated + // limit. It will simply mark the whole object or just skip it + // since we're in the mark phase anyway. s.limit = s.base() + size s.initHeapBits() return s |