####################################################### # # ruboto/util/stack.rb # # Utility methods for running code in a separate # thread with a larger stack. # ####################################################### class Object def with_large_stack(opts = {}, &block) opts = {:size => opts} if opts.is_a? Integer opts = {:name => 'Block with large stack'}.update(opts) exception = nil result = nil t = Thread.with_large_stack(opts, &proc{result = block.call rescue exception = $!}) t.join raise exception if exception result end end class Thread def self.with_large_stack(opts = {}, &block) opts = {:size => opts} if opts.is_a? Integer stack_size_kb = opts.delete(:size) || 64 name = opts.delete(:name) || 'Thread with large stack' raise "Unknown option(s): #{opts.inspect}" unless opts.empty? block_with_logging = proc do begin block.call rescue Exception STDERR.puts "Exception in #{name}: #{$!}\n#{$!.backtrace.join("\n")}" raise end end t = java.lang.Thread.new(nil, block_with_logging, name, stack_size_kb * 1024) t.start t end end