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ruby--ruby/ext/coverage/lib/coverage.rb
mame 47ea999b46 ext/coverage/: add the oneshot mode
This patch introduces "oneshot_lines" mode for `Coverage.start`, which
checks "whether each line was executed at least once or not", instead of
"how many times each line was executed".  A hook for each line is fired
at most once, and after it is fired, the hook flag was removed; it runs
with zero overhead.

See [Feature ] in detail.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65195 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2018-10-20 05:33:04 +00:00

14 lines
348 B
Ruby

require "coverage.so"
module Coverage
def self.line_stub(file)
lines = File.foreach(file).map { nil }
iseqs = [RubyVM::InstructionSequence.compile_file(file)]
until iseqs.empty?
iseq = iseqs.pop
iseq.trace_points.each {|n, _| lines[n - 1] = 0 }
iseq.each_child {|child| iseqs << child }
end
lines
end
end