Module Strace
In: lib/strace.rb

Simple wrapper of strace(1) for targetted tracing.

Methods

me  

Constants

VERSION = '1.0'   The version of strace_me you‘re using

Public Class methods

me() {|| ...}

Runs strace(1) during the code in the block and returns an IO containing the strace output and the exception raised by the block (if any).

Simple example (it doesn‘t matter if you have a /COPYRIGHT): 

  trace, err = Strace.me do
    open '/COPYRIGHT' do |io|
      io.read 1024
    end
  end

  puts "error: #{err.message} (#{err.class})\n\n" if err
  puts "trace:\n\n#{trace.read}"

Tracing an existing library call: 

  alias old_connect connect

  def connect host, user, password
    connection = nil

    trace, err = Strace.me do
      connection = old_connect host, user, password
    end

    $stderr.puts "connect trace:\n\n#{trace.read}"

    raise err if err
    connection
  end

[Validate]