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Bug #11193 ยป test_case.rb

The explanation. - martin_vahi (Martin Vahi), 05/28/2015 04:03 PM

 
#!/usr/bin/env ruby
#==========================================================================
# Author: martin.vahi@softf1.com
# This file is in public domain.
#==========================================================================
require 'thread'

def func_flaw_demo
#----------------------------------------------------------------------
begin
raise(Exception.new("\n"+
"The begin-rescue works in the main thread."))
rescue Exception=>e
puts e.to_s
end # rescue
#----------------------------------------------------------------------
ob_thread_1=Thread.new do
begin
raise(Exception.new(
"The begin-rescue works in a newly created thread, the ob_thread_1."+
"\n\n"))
rescue Exception=>e
puts e.to_s
end # rescue
end # ob_thread_1
# The
ob_thread_1.join
# makes the main thread to wait for ob_thread_1 to finish before exiting.
#----------------------------------------------------------------------
ob_thread_2=nil # declares a var outside begin-rescue
begin
ob_thread_2=Thread.new do
raise(Exception.new("\n\n"+
"The begin-rescure construct in the main thread \n"+
"will not catch the exception that is thrown from \n"+
"a newly created thread, the ob_threaqd_2, despite the fact that the \n"+
"ob_thread_2 started to execute within the begin-rescue block \n"+
"of the main thread.\n"+
"I think that the correct solution would be to treat threads in\n"+
"that situation like lambda functions are treated."+
"\n\n"))
end # ob_thread_2
rescue Exception=>e
puts e.to_s
end # rescue
ob_thread_2.join
end # func_flaw_demo

func_flaw_demo()

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