Purpose: document the Tcl thread extension, point to its online source code repository, etc.
What: Thread extension
Where: http://tcl.sf.net/
Description: This Tcl extension, with a thread-enabled core, allows script
level access to run Tcl scripts within threads.
Currently at version 2.6 .
Updated: 12/2004
Contact: See web site
See also Threads
As of early 2004, the best documentation for the Thread extension appears in "The Tcl Threading Model" [L1 ], the Thread "man" page [L2 ], and a sample chapter [L3 ] from Brent's (et al.) book. dqkit is a convenient deployment for those with an interest in
package require Thread
People with an interest in this extension might also want to subscribe to the tcl-threads mailing list [L4 ] on SourceForge.
A distinct meaning [L5 ] of "thread" occurs in discussions of bytecode, especially when Forth is nearby.
The 2.6 release adds a sub-package called Ttrace. This allows for easy propagation of interpreter related resources (procedures, namespaces, objects (for XOTcl)). Usage is trivial: yust wrap the code you want to replicate within ttrace::eval like this:
package req Thread
package req Ttrace
for {set i 0} {$i < 4} {incr i} {
set tid($i) [thread::create -preserved]
}
ttrace::eval {
proc foo {args} {
puts foo
}
proc bar {args} {
puts bar
}
}and execute this from any thread created by the thread extension. This will replicate the definitions of 'foo' and 'bar' to all existing threads. In the above example, all 4 threads will be seeded. For more information see 'man ttrace'.