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Diffstat (limited to 'libgo/go/runtime/sema.go')
| -rw-r--r-- | libgo/go/runtime/sema.go | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libgo/go/runtime/sema.go b/libgo/go/runtime/sema.go index d04e6f5..6e2beec 100644 --- a/libgo/go/runtime/sema.go +++ b/libgo/go/runtime/sema.go @@ -275,7 +275,10 @@ func (root *semaRoot) queue(addr *uint32, s *sudog, lifo bool) { // on the ticket: s.ticket <= both s.prev.ticket and s.next.ticket. // https://en.wikipedia.org/wiki/Treap // http://faculty.washington.edu/aragon/pubs/rst89.pdf - s.ticket = fastrand() + // + // s.ticket compared with zero in couple of places, therefore set lowest bit. + // It will not affect treap's quality noticeably. + s.ticket = fastrand() | 1 s.parent = last *pt = s |