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YJIT: handle when all counters are zero in printout code

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Also filter with not equal to zero instead of greater than zero, in case
there is memory corruption and counters are negative.

Fixes Shopify/ruby#70
This commit is contained in:
Alan Wu 2021-03-06 11:05:55 -05:00
parent eaab6605b7
commit 7f7e79d802
1 changed files with 6 additions and 1 deletions
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7
ujit.rb
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@ -67,9 +67,14 @@ module UJIT
def print_counters(counters, prefix:, prompt:)
$stderr.puts(prompt)
counters = counters.filter { |key, _| key.start_with?(prefix) }
counters.filter! { |_, value| value > 0 }
counters.filter! { |_, value| value != 0 }
counters.transform_keys! { |key| key.to_s.delete_prefix(prefix) }
if counters.empty?
$stderr.puts(" (all relevant counters are zero)")
return
end
counters = counters.to_a
counters.sort_by! { |(_, counter_value)| counter_value }
longest_name_length = counters.max_by { |(name, _)| name.length }.first.length