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# commserver.tcl --
# This forks off an external server process with 'comm' loaded in it,
# for use as an IPC system.
# Copyright 2003-2004 The Apache Software Foundation
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# http://www.apache.org/licenses/LICENSE-2.0
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# $Id$
package provide commserver 0.1
namespace eval ::commserver {
set Port 35100
set scriptlocation [info script]
set wait 5
}
proc ::commserver::start {} {
variable Port
variable scriptlocation
variable wait
# Attempt to launch server.
exec [info nameofexecutable] \
[file join [file dirname $scriptlocation] server.tcl] $Port &
set starttime [clock seconds]
# If we don't get a connection in $wait seconds, abort.
while { [clock seconds] - $starttime < $wait } {
if { ![catch {
comm::comm send $Port {
puts stderr "Commserver server started on $Port"
}
}] } {
return
}
}
error "Connection to $Port failed after $wait seconds of trying."
}
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