If flag is non-nil, the top generation is collected; if flag is any other value, the top generation is not collected. The default is nil
.
The function collect-highest-generation
controls whether the top generation is garbage-collected in 32-bit LispWorks.
collect-highest-generation
is implemented only in 32-bit LispWorks. It is not relevant to the Memory Management API in 64-bit implementations.
avoid-gc
clean-generation-0
collect-generation-2
expand-generation-1
normal-gc
Memory Management in 32-bit LispWorks
LispWorks User Guide and Reference Manual - 20 Sep 2017