runtime.mheap.cleanupID (field) 3 uses runtime (current package) mheap.go#L255: cleanupID uint64 mheap.go#L2179: mheap_.cleanupID++ // Increment first. ID 0 is reserved. mheap.go#L2180: id := mheap_.cleanupID
The pages are generated with Golds v0.8.4. (GOOS=linux GOARCH=amd64)