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ruby--ruby/benchmark/vm_backtrace.rb
Takashi Kokubun f883d6219e
Unify vm benchmark prefixes to vm_ (#3028)
The vm1_ prefix and vm2_ had had special meaning until
820ad9cb1d and
12068aa4e9. AFAIK there's no special
meaning in vm3_ prefix.

As they have confused people (like "In `benchmark` what is difference
between `vm1_`, `vm2_` and `vm3_`"), I'd like to remove the obsoleted
prefix as we obviated that two years ago.
2020-04-13 21:37:42 -07:00

22 lines
252 B
Ruby

# get last backtrace
begin
caller(0, 0)
rescue ArgumentError
alias caller_orig caller
def caller lev, n
caller_orig(lev)[0..n]
end
end
def rec n
if n < 0
100_000.times{
caller(0, 1)
}
else
rec(n-1)
end
end
rec 50