multithreading - Simple jruby threading -


i looking how start 2 simple threads in jruby.

in following 2 threads, message within first thread not printed. can swap 2 threads , behavior (first thread not print) persists: not contents of thread (which stubbed out in case)

input_before_mysql_phases_t = thread.new   sprint "input_before_mysql_phases completed" end mysql_phases_t = thread.new   sprint "mysql_phases completed" end sprint "awaiting completion of data fetch phases .." sleep 5 sprint "data fetch phases completed"

here output: notice message first thread not printed.

    => #<thread:0x72d006a7 run> [2013-04-18t12:56:29+00:00] scheduler: mysql_phases completed irb(main):540:0>     sprint "awaiting completion of data fetch phases .." [2013-04-18t12:56:29+00:00] scheduler: awaiting completion of data fetch phases .. => nil irb(main):541:0>     sleep 5 => 5 irb(main):542:0>     sprint "data fetch phases completed" [2013-04-18t12:56:34+00:00] scheduler: data fetch phases completed

what sprint function?

this works:

input_before_mysql_phases_t = thread.new   sleep random.rand(5) # random sleep   sprintf "input_before_mysql_phases completed" end mysql_phases_t = thread.new   sleep random.rand(5) #random sleep   sprintf "mysql_phases completed" end   puts "awaiting completion of data fetch phases .." # wait threads finish input_before_mysql_phases_t.join mysql_phases_t.join puts "data fetch phases completed"

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