15.4 Garbage Collection
| (collect-garbage) → void? |
Forces an immediate garbage collection. Some effectively unreachable
data may remain uncollected, because the collector cannot prove that
it is unreachable.
The collect-garbage procedure provides some control over the timing of collections, but garbage will obviously be collected even if this procedure is never called.
| (current-memory-use [cust]) → exact-nonnegative-integer? |
| cust : custodian? = #f |
Returns an estimate of the number of bytes of memory occupied by
reachable data from cust. This estimate is calculated by the
last garbage colection, and can be 0 if none occurred (or if none occurred
since the given custodian was created). The current-memory-use
function does not perform a collection by itself; doing one
before the call will generally decrease the result (or increase it from
0 if no collections happened yet).
If cust is not provided, the estimate is a total reachable from any custodians.
When Racket is compiled without support for memory accounting, the estimate is the same (i.e., all memory) for any individual custodian; see also custodian-memory-accounting-available?.
| (dump-memory-stats) → any |
Dumps information about memory usage to the (low-level) standard
output port.