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(Performance) Remove unnecessary I/O syscalls for FileTasks #393

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Mar 25, 2022
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(Performance) Remove unnecessary I/O syscalls for FileTasks #393

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f8afda2
(Performance) Remove unnecessary syscall
da2x Sep 16, 2021
abf5e26
(Performance) Remove an unnecessary syscall
da2x Sep 17, 2021
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12 changes: 8 additions & 4 deletions lib/rake/file_task.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -14,14 +14,18 @@ class FileTask < Task
# Is this file task needed? Yes if it doesn't exist, or if its time stamp
# is out of date.
def needed?
!File.exist?(name) || out_of_date?(timestamp) || @application.options.build_all
begin
out_of_date?(File.mtime(name)) || @application.options.build_all
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@da2x da2x Sep 17, 2021 •
edited

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Calling File.mtime here directly instead of timestamp because checking to see if it returned Rake::LATE was significantly slower. This is functionally the same as before as out_of_date? would never receive Rake::LATE except if there was a race condition between the first and second File.exist checks.

rescue Errno::ENOENT
true
end
end

# Time stamp for file task.
def timestamp
if File.exist?(name)
File.mtime(name.to_s)
else
begin
File.mtime(name)
rescue Errno::ENOENT
Rake::LATE
end
end
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