diff options
Diffstat (limited to 'src/runtime/mgc.go')
| -rw-r--r-- | src/runtime/mgc.go | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/src/runtime/mgc.go b/src/runtime/mgc.go index 830bf879d4..5417d3a291 100644 --- a/src/runtime/mgc.go +++ b/src/runtime/mgc.go @@ -628,6 +628,19 @@ func clearpools() { poolcleanup() } + // Clear central sudog cache. + // Leave per-P caches alone, they have strictly bounded size. + // Disconnect cached list before dropping it on the floor, + // so that a dangling ref to one entry does not pin all of them. + lock(&sched.sudoglock) + var sg, sgnext *sudog + for sg = sched.sudogcache; sg != nil; sg = sgnext { + sgnext = sg.next + sg.next = nil + } + sched.sudogcache = nil + unlock(&sched.sudoglock) + for _, p := range &allp { if p == nil { break @@ -636,15 +649,6 @@ func clearpools() { if c := p.mcache; c != nil { c.tiny = nil c.tinyoffset = 0 - - // disconnect cached list before dropping it on the floor, - // so that a dangling ref to one entry does not pin all of them. - var sg, sgnext *sudog - for sg = c.sudogcache; sg != nil; sg = sgnext { - sgnext = sg.next - sg.next = nil - } - c.sudogcache = nil } // clear defer pools |