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#
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# Standard Library
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#
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require 'securerandom'
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#
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# Project
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#
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require 'metasploit/framework/spec/threads/suite'
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original_thread_new = Thread.method(:new)
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# Patches `Thread.new` so that if logs `caller` so thread leaks can be traced
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Thread.define_singleton_method(:new) { |*args, &block|
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  uuid = SecureRandom.uuid
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  # tag caller with uuid so that only leaked threads caller needs to be printed
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  lines = ["BEGIN Thread.new caller (#{uuid})"]
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  caller.each do |frame|
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    lines << "  #{frame}"
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  end
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  lines << 'END Thread.new caller'
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  Metasploit::Framework::Spec::Threads::Suite::LOG_PATHNAME.parent.mkpath
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  Metasploit::Framework::Spec::Threads::Suite::LOG_PATHNAME.open('a') { |f|
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    # single puts so threads can't write in between each other.
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    f.puts lines.join("\n")
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  }
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  options = {original_args: args, uuid: uuid}
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  original_thread_new.call(options) {
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    # record uuid for thread-leak detection can used uuid to correlate log with this thread.
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    Thread.current[Metasploit::Framework::Spec::Threads::Suite::UUID_THREAD_LOCAL_VARIABLE] = options.fetch(:uuid)
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    block.call(*options.fetch(:original_args))
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  }
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}
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