Hi all
I'm trying to run two thread at one time in a program.
And one of them will receive user inputting msgs by gets().
another one will do something else at the same time.
they don't communicate each other.
like this :
thread_a = Thread.new{
loop do
puts "please enter blah blah"
msg = gets #do something
end
}
thread_a.join
thread_b = Thread.new{
loop do #do other things maybe puts "im running im running
......"
end
}
thread_b.join
but when thread_a runs gets waiting for user input, whole program will be
paused waiting for this, I mean thread_b will not working.
How can I handle this ?
Do I have to do this by running multi process?
[Note: parts of this message were removed to make it a legal post.]
Hi all
I'm trying to run two thread at one time in a program.
And one of them will receive user inputting msgs by gets().
another one will do something else at the same time.
they don't communicate each other.
like this :
thread_a = Thread.new{
loop do
puts "please enter blah blah"
msg = gets #do something
end
}
thread_a.join
thread_b = Thread.new{
loop do #do other things maybe puts "im running im running
....."
end
}
thread_b.join
but when thread_a runs gets waiting for user input, whole program will be
paused waiting for this, I mean thread_b will not working.
How can I handle this ?
You are using threads like ordinary functions: you start a thread and wait for it to finish before you start the next one. You should move thread_a.join after the start of thread_b.
Thanks Robert. Seems I didn't uderstand well with thr.join method...
···
2009/8/22 Robert Klemme <shortcutter@googlemail.com>
On 21.08.2009 19:10, Im still wrote:
[Note: parts of this message were removed to make it a legal post.]
Hi all
I'm trying to run two thread at one time in a program.
And one of them will receive user inputting msgs by gets().
another one will do something else at the same time.
they don't communicate each other.
like this :
thread_a = Thread.new{
loop do
puts "please enter blah blah"
msg = gets #do something
end
}
thread_a.join
thread_b = Thread.new{
loop do #do other things maybe puts "im running im running
....."
end
}
thread_b.join
but when thread_a runs gets waiting for user input, whole program will be
paused waiting for this, I mean thread_b will not working.
How can I handle this ?
You are using threads like ordinary functions: you start a thread and wait
for it to finish before you start the next one. You should move
thread_a.join after the start of thread_b.
Still a question.
How can I implement a function that command line will keep on outputting
messages while it will still receive user's keyboard inputtings just like
Linux shell always does?
thanks.
···
2009/8/22 Im still <quietstill@gmail.com>
2009/8/22 Robert Klemme <shortcutter@googlemail.com>
> On 21.08.2009 19:10, Im still wrote:
>
>> [Note: parts of this message were removed to make it a legal post.]
>>
>>
>> Hi all
>> I'm trying to run two thread at one time in a program.
>> And one of them will receive user inputting msgs by gets().
>> another one will do something else at the same time.
>> they don't communicate each other.
>>
>> like this :
>>
>> thread_a = Thread.new{
>> loop do
>> puts "please enter blah blah"
>> msg = gets
>> #do something
>> end
>> }
>> thread_a.join
>> thread_b = Thread.new{
>> loop do
>> #do other things maybe puts "im running im running
>> ....."
>> end
>>
>> }
>> thread_b.join
>>
>> but when thread_a runs gets waiting for user input, whole program will
be
>> paused waiting for this, I mean thread_b will not working.
>> How can I handle this ?
>>
>
> You are using threads like ordinary functions: you start a thread and
wait
> for it to finish before you start the next one. You should move
> thread_a.join after the start of thread_b.
>
> Do I have to do this by running multi process?
>>
>
> No.
>
> Kind regards
>
> robert
>
> --
> remember.guy do |as, often| as.you_can - without end
> http://blog.rubybestpractices.com/
>
Thanks Robert. Seems I didn't uderstand well with thr.join method...
Not sure what you mean: the console will happily print whenever something is sent to it for printing. It seems your question is rather about how to have work done in background while waiting for user input in the foreground. I am not sure though whether it is a good idea to clutter the terminal with output from background jobs when you want to receive typed user input at the same time. It can be really hard to keep track of what you typed when background output is copious.
Kind regards
robert
···
On 21.08.2009 21:41, Im still wrote:
Still a question.
How can I implement a function that command line will keep on outputting
messages while it will still receive user's keyboard inputtings just like
Linux shell always does?
Actually, I'm trying to write a command line chatting program. Just for fun.
With UDP.
And having troubles on controlling (managing ) threads between outputting
received msg from other client and getting user typed commands.
Because, gets() method seems paused whole program, and if there are messages
received from other client will not be displayed automatically.program will
stay waiting for user input.....
I don't know if I've told things clear enough....
···
2009/8/22 Robert Klemme <shortcutter@googlemail.com>
On 21.08.2009 21:41, Im still wrote:
Still a question.
How can I implement a function that command line will keep on outputting
messages while it will still receive user's keyboard inputtings just like
Linux shell always does?
Not sure what you mean: the console will happily print whenever something
is sent to it for printing. It seems your question is rather about how to
have work done in background while waiting for user input in the foreground.
I am not sure though whether it is a good idea to clutter the terminal with
output from background jobs when you want to receive typed user input at the
same time. It can be really hard to keep track of what you typed when
background output is copious.