+ # Open a listening socket, trying different ports in order to find a
+ # non busy one.
+ set port [find_available_port 11111]
+ puts "Starting test server at port $port"
+ socket -server accept_test_clients $port
+
+ # Start the client instances
+ set ::clients_pids {}
+ set start_port [expr {$::port+100}]
+ for {set j 0} {$j < $::numclients} {incr j} {
+ set start_port [find_available_port $start_port]
+ set p [exec tclsh8.5 [info script] {*}$::argv \
+ --client $port --port $start_port &]
+ lappend ::clients_pids $p
+ incr start_port 10
+ }
+
+ # Setup global state for the test server
+ set ::idle_clients {}
+ set ::active_clients {}
+ array set ::clients_start_time {}
+ set ::clients_time_history {}
+ set ::failed_tests {}
+
+ # Enter the event loop to handle clients I/O
+ after 100 test_server_cron
+ vwait forever
+}
+
+# This function gets called 10 times per second, for now does nothing but
+# may be used in the future in order to detect test clients taking too much
+# time to execute the task.
+proc test_server_cron {} {
+}
+
+proc accept_test_clients {fd addr port} {
+ fileevent $fd readable [list read_from_test_client $fd]
+}
+
+# This is the readable handler of our test server. Clients send us messages
+# in the form of a status code such and additional data. Supported
+# status types are:
+#
+# ready: the client is ready to execute the command. Only sent at client
+# startup. The server will queue the client FD in the list of idle
+# clients.
+# testing: just used to signal that a given test started.
+# ok: a test was executed with success.
+# err: a test was executed with an error.
+# exception: there was a runtime exception while executing the test.
+# done: all the specified test file was processed, this test client is
+# ready to accept a new task.
+proc read_from_test_client fd {
+ set bytes [gets $fd]
+ set payload [read $fd $bytes]
+ foreach {status data} $payload break
+ if {$status eq {ready}} {
+ puts "\[$status\]: $data"
+ signal_idle_client $fd
+ } elseif {$status eq {done}} {
+ set elapsed [expr {[clock seconds]-$::clients_start_time($fd)}]
+ puts "\[[colorstr yellow $status]\]: $data ($elapsed seconds)"
+ puts "+++ [expr {[llength $::active_clients]-1}] units still in execution."
+ lappend ::clients_time_history $elapsed $data
+ signal_idle_client $fd
+ } elseif {$status eq {ok}} {
+ puts "\[[colorstr green $status]\]: $data"
+ } elseif {$status eq {err}} {
+ set err "\[[colorstr red $status]\]: $data"
+ puts $err
+ lappend ::failed_tests $err
+ } elseif {$status eq {exception}} {
+ puts "\[[colorstr red $status]\]: $data"
+ foreach p $::clients_pids {
+ catch {exec kill -9 $p}
+ }