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Programming Ruby The Pragmatic Programmer's Guide |
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class ThreadGroup
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Parent:
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Object
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Version:
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1.6
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Index:
new
add
list
ThreadGroup provides a means of keeping track of a number of
threads as a group. A Thread can belong to only one ThreadGroup at a time; adding a thread to a new group will
remove it from any previous group.
Newly created threads belong to the same group as the thread from
which they were created.
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class methods
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new
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ThreadGroup.new
-> thgrp
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Returns a newly created ThreadGroup. The group is initially
empty.
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instance methods
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add
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thgrp.add( aThread )
-> thgrp
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Adds the given thread to this group, removing it from any other
group to which it may have previously belonged.
puts "Initial group is #{ThreadGroup::Default.list}"
tg = ThreadGroup.new
t1 = Thread.new { sleep 10 }
t2 = Thread.new { sleep 10 }
puts "t1 is #{t1}"
puts "t2 is #{t2}"
tg.add( t1 )
puts "Initial group now #{ThreadGroup::Default.list}"
puts "tg group now #{tg.list}"
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produces:
Initial group is #<Thread:0x401be5c8>
t1 is #<Thread:0x401b5428>
t2 is #<Thread:0x401b53d8>
Initial group now #<Thread:0x401b53d8>#<Thread:0x401be5c8>
tg group now #<Thread:0x401b5428>
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list
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thgrp.list
-> anArray
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Returns an array of all existing Thread objects that belong
to this group.
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ThreadGroup::Default.list
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[#<Thread:0x401be5c8 run>]
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Extracted from the book "Programming Ruby -
The Pragmatic Programmer's Guide"
Copyright
©
2001 by Addison Wesley Longman, Inc. This material may
be distributed only subject to the terms and conditions set forth in
the Open Publication License, v1.0 or later (the latest version is
presently available at http://www.opencontent.org/openpub/)).
Distribution of substantively modified versions of this document is
prohibited without the explicit permission of the copyright holder.
Distribution of the work or derivative of the work in any standard
(paper) book form is prohibited unless prior permission is obtained
from the copyright holder.
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