Glossary

GC
garbage collector
mlog
mutation log.
Remembers cross-generation and cross-checkpoint pointers
nursery
in garbage collector, memory region dedicated to young objects.
These are objects that have survived less than 2 incremental collection cycles.
tenured
in garbage collector, memory region dedicated to older objects.
These are defined as objects that have survived 2 or more incremental collection cycles.
xgen
cross-generation tenured->nursery pointer; requires special GC bookkeeping
xckp
cross-checkpoint pointer; requires special GC bookkeeping