You can print object heap status information:

room. ( -- )

heap-stats. ( -- )

heap-stats ( -- counts sizes )

You can query memory status:

data-room ( -- data-heap-room )

code-room ( -- mark-sweep-sizes )

A combinator to get objects from the heap:

instances ( quot -- seq )

You can check an object's the heap memory usage:

size ( obj -- n )

The garbage collector can be invoked manually:

gc ( -- )

See also
Images