Verify thread collisions are possible
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require 'thread' | |
class Foo | |
attr_accessor :bar | |
def baz | |
@bar ||= rand(10000000000) | |
end | |
end | |
f = Foo.new | |
baz1 = -1 | |
baz2 = -1 | |
count = 0 | |
last_one = "" | |
while baz1 == baz2 | |
last_one = "f.bar: #{f.bar}; baz1: #{baz1}; baz2: #{baz2}" | |
f.bar = nil | |
wait_til = Time.now + 0.01 | |
Thread.new {sleep (wait_til - Time.now); baz1 = f.baz } | |
Thread.new {sleep (wait_til - Time.now); baz2 = f.baz } | |
sleep 0.02 | |
count += 1 | |
if count == 100 | |
puts "working: #{last_one}" | |
count = 0 | |
end | |
end | |
puts | |
puts "Thread collision" | |
puts "previous: #{last_one}" # Just to prove it's not remembering value from last iteration but is a real collision | |
puts "current: f.bar: #{f.bar}; baz1: #{baz1}; baz2: #{baz2}" |
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