# Starting multiple processes **URL:** \ **Category:** Ruby\ **Created:** [December 20, 2007, 12:30am UTC](https://www.ruby-forum.com/t/starting-multiple-processes/123719 "2007-12-20T00:30:46Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![Junkone](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/e274bd/32.png) [@Junkone](https://www.ruby-forum.com/u/Junkone)\ **Post date:** [December 20, 2007, 12:30am UTC](https://www.ruby-forum.com/t/starting-multiple-processes/123719/1 "2007-12-20T00:30:46Z")
hello i have to do the following 1. ``` exec("E:\\TradingTools\\IBController\ ``` \IBControllerStart\_customised.bat") 2. application = WIN32OLE.new(“Broker.Application”) I want to start 1 and then continue doing 2. however when i run it realtime, the statement 2 waits for statement 1 to be completed which takes long time. how do i initiate 1 and then withotu waiting goto statement 2. apreciate ur help seede ---
**Author:** ![Junkone](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/e274bd/32.png) [@Junkone](https://www.ruby-forum.com/u/Junkone)\ **Post date:** [December 20, 2007, 12:53am UTC](https://www.ruby-forum.com/t/starting-multiple-processes/123719/2 "2007-12-20T00:53:38Z")
Junkone wrote: > hello > i have to do the following > > 1. > > ``` > exec("E:\\TradingTools\\IBController\ > > ``` > > \IBControllerStart\_customised.bat") > 2. application = WIN32OLE.new(“Broker.Application”) > > I want to start 1 and then continue doing 2. however when i run it > realtime, the statement 2 waits for statement 1 to be completed which > takes long time. how do i initiate 1 and then withotu waiting goto > statement 2. Wrap #1 in a thread: Thread.new do exec(…) end ---
**Author:** ![Junkone](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/e274bd/32.png) [@Junkone](https://www.ruby-forum.com/u/Junkone)\ **Post date:** [December 20, 2007, 9:35am UTC](https://www.ruby-forum.com/t/starting-multiple-processes/123719/3 "2007-12-20T09:35:15Z")
2007/12/20, Joel VanderWerf [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid): > > statement 2. > > Wrap #1 in a thread: > > Thread.new do > exec(…) > end Wouldn’t help. This is #exec and not #system - the process does not wait, it is completely replaced and “application = WIN32OLE.new(“Broker.Application”)” is never executed. You rather want fork. fork do exec … end Cheers robert ---
**Author:** ![Junkone](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/e274bd/32.png) [@Junkone](https://www.ruby-forum.com/u/Junkone)\ **Post date:** [December 20, 2007, 4:32pm UTC](https://www.ruby-forum.com/t/starting-multiple-processes/123719/4 "2007-12-20T16:32:48Z")
On Dec 20, 2007 2:34 AM, Robert K. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > takes long time. how do i initiate 1 and then withotu waiting goto > > > WIN32OLE.new(“Broker.Application”)" is never executed. > > – > use.inject do |as, often| as.you\_can - without end Fork isn’t implemented on Windows. Try this: system(“start E:\TradingTools\IBController\IBControllerStart\_customised.bat”) application = WIN32OLE.new(“Broker.Application”) -Gordon ---
**Author:** ![Junkone](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/e274bd/32.png) [@Junkone](https://www.ruby-forum.com/u/Junkone)\ **Post date:** [December 20, 2007, 5:06pm UTC](https://www.ruby-forum.com/t/starting-multiple-processes/123719/5 "2007-12-20T17:06:12Z")
2007/12/20, Gordon T. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid): > > > > realtime, the statement 2 waits for statement 1 to be completed which > > > > wait, it is completely replaced and "application = > > > > robert > > > > – > > use.inject do |as, often| as.you\_can - without end > > Fork isn’t implemented on Windows. Unless you are using cygwin. Sorry, I keep forgetting that the other Windows based versions do not have it. Thanks for correcting me! > Try this: > > system(“start E:\TradingTools\IBController\IBControllerStart\_customised.bat”) > application = WIN32OLE.new(“Broker.Application”) Kind regards robert ---
**Author:** ![Junkone](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/e274bd/32.png) [@Junkone](https://www.ruby-forum.com/u/Junkone)\ **Post date:** [December 22, 2007, 1:50am UTC](https://www.ruby-forum.com/t/starting-multiple-processes/123719/6 "2007-12-22T01:50:57Z")
On Dec 21, 2:55 pm, Joel VanderWerf [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > > realtime, the statement 2 waits for statement 1 to be completed which > > > > WIN32OLE.new(“Broker.Application”)" is never executed. > > This is AFAIK platform independent, since it doesn’t (explicitly, > anyway) use #fork or “start”. > > – > vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407- Hide quoted text - > > - Show quoted text - i tried that. it does not work for me. it waits Thread.new do system(“start E:\TradingTools\IBController \IBControllerStart\_customised.bat”) end to get completed before going and doing this application = WIN32OLE.new(“Broker.Application”) ---
**Author:** ![Junkone](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/e274bd/32.png) [@Junkone](https://www.ruby-forum.com/u/Junkone)\ **Post date:** [December 20, 2007, 4:46pm UTC](https://www.ruby-forum.com/t/starting-multiple-processes/123719/7 "2007-12-20T16:46:52Z")
Maynot help you much but in Perl world I used IPC::Run module to do exactly this. Not sure if there is a similar module in RubyLand. Gordon T. wrote: > ``` > On Dec 20, 2007 2:34 AM, Robert K.[\](mailto:removed_email_address@domain.invalid)wrote: > ``` > > > ``` > > 2007/12/20, Joel VanderWerf[\](mailto:removed_email_address@domain.invalid): > > ``` > > > > > ``` > > > Junkone wrote: > > > ``` > > > > > > > ``` > > > > hello > > > > i have to do the following > > > > 1. exec("E:\\TradingTools\\IBController\ > > > > \IBControllerStart_customised.bat") > > > > 2. application = WIN32OLE.new("Broker.Application") > > > > > > > > I want to start 1 and then continue doing 2. however when i run it > > > > realtime, the statement 2 waits for statement 1 to be completed which > > > > takes long time. how do i initiate 1 and then withotu waiting goto > > > > statement 2. > > > > ``` > > > > > > > > > > > > ``` > > > Wrap#1in a thread: > > > > > > Thread.new do > > > exec(…) > > > end > > > ``` > > > > > > > > ``` > > Wouldn’t help. This is#execand not#system- the > > process does not > > wait, it is completely replaced and “application = > > WIN32OLE.new(“Broker.Application”)” is never executed. > > > > You rather want fork. > > > > fork do > > exec … > > end > > > > Cheers > > > > robert > > > > – > > use.inject do |as, often| as.you\_can - without end > > > > ``` > > > > > > ``` > > ``` > > ``` > Fork isn’t implemented on Windows. Try this: > > system(“start > E:\TradingTools\IBController\IBControllerStart\_customised.bat”) > application = WIN32OLE.new(“Broker.Application”) > > -Gordon > ``` ---
**Author:** ![Junkone](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/e274bd/32.png) [@Junkone](https://www.ruby-forum.com/u/Junkone)\ **Post date:** [December 21, 2007, 8:56pm UTC](https://www.ruby-forum.com/t/starting-multiple-processes/123719/8 "2007-12-21T20:56:30Z")
Robert K. wrote: > > > takes long time. how do i initiate 1 and then withotu waiting goto > > > statement 2. > > > Wrap #1 in a thread: > > > > Thread.new do > > exec(…) > > end > > Wouldn’t help. This is #exec and not #system - the process does not > wait, it is completely replaced and “application = > WIN32OLE.new(“Broker.Application”)” is never executed. Oops, you’re quite right, I was thinking of #system. Maybe #system would be right for the OP: Thread.new do system("…") end application = … This is AFAIK platform independent, since it doesn’t (explicitly, anyway) use #fork or “start”.