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Viewing changes to test/scaling-test-bisect.rb

  • Committer: Bazaar Package Importer
  • Author(s): Julien Cristau
  • Date: 2009-09-28 18:12:47 UTC
  • mfrom: (1.1.8 upstream) (2.1.3 squeeze)
  • Revision ID: james.westby@ubuntu.com-20090928181247-3iehog63i50htejf
Tags: 0.16.2-1
http://bugs.debian.org/546849
* New upstream release (closes: #546849).
* Upload to unstable.

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test/scaling-test-bisect.rb
 
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#!/usr/bin/env ruby
 
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if not ARGV[0] or not ARGV[1] then
 
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    printf("Please provide two 'scaling-test' static binaries in the command line.\n\n")
 
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    printf("The first should be linked with the correct reference pixman library.\n")
 
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    printf("The second binrary should be linked with the pixman library to be tested.\n")
 
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    exit(0)
 
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end
 
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$MAX = 3000000
 
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$MIN = 1
 
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$AVG = 0
 
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if `#{ARGV[0]} #{$MAX} 2>/dev/null` == `#{ARGV[1]} #{$MAX} 2>/dev/null` then
 
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    printf("test ok\n")
 
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    exit(0)
 
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end
 
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printf("test failed, bisecting...\n")
 
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while $MAX != $MIN + 1 do
 
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    $AVG = (($MIN + $MAX) / 2).to_i
 
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    res1 = `#{ARGV[0]} #{$AVG} 2>/dev/null`
 
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    res2 = `#{ARGV[1]} #{$AVG} 2>/dev/null`
 
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    if res1 != res2 then
 
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        $MAX = $AVG
 
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    else
 
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        $MIN = $AVG
 
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    end
 
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end
 
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printf("-- ref --\n")
 
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printf("%s\n", `#{ARGV[0]} -#{$MAX}`)
 
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printf("-- new --\n")
 
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printf("%s\n", `#{ARGV[1]} -#{$MAX}`)
 
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printf("\nFailed test number is %d, you can reproduce the problematic conditions\n", $MAX)
 
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printf("by running 'scaling-test -%d'\n", $MAX)