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101 lines
2.9 KiB
Tcl
101 lines
2.9 KiB
Tcl
# See the file LICENSE for redistribution information.
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#
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# Copyright (c) 2000, 2012 Oracle and/or its affiliates. All rights reserved.
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#
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# $Id$
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#
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# Sentinel file wrapper for multi-process tests. This is designed to avoid a
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# set of nasty bugs, primarily on Windows, where pid reuse causes watch_procs
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# to sit around waiting for some random process that's not DB's and is not
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# exiting.
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source ./include.tcl
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source $test_path/testutils.tcl
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source $tcl_utils/multi_proc_utils.tcl
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# Arguments:
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if { $argc < 2 } {
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puts "FAIL: wrap.tcl: Usage: wrap.tcl script log [scriptargs]"
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exit
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}
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set script [lindex $argv 0]
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set logfile [lindex $argv 1]
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if { $argc >= 2 } {
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set skip [lindex $argv 2]
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set args [lrange $argv 3 end]
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} else {
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set skip ""
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set args ""
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}
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#
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# Account in args for SKIP command, or not.
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#
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if { $skip != "SKIP" && $argc >= 2 } {
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set args [lrange $argv 2 end]
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}
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# Create a sentinel file to mark our creation and signal that watch_procs
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# should look for us.
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set parentpid [pid]
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set parentsentinel $testdir/begin.$parentpid
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set f [open $parentsentinel w]
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close $f
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# Create a subprocess that will actually run the test.
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set nameexec [info nameofexecutable]
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set t [open "|$nameexec >& $logfile" w]
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# Create a sentinel for the subprocess.
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set childpid [pid $t]
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puts "Script watcher process $parentpid launching $script process $childpid."
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set childsentinel $testdir/begin.$childpid
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set f [open $childsentinel w]
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close $f
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#
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# For the upgrade tests where a current release tclsh is starting up
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# a tclsh in an older release, we cannot tell it to source the current
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# test.tcl because new things may not exist in the old release. So,
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# we need to skip that and the script we're running in the old
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# release will have to take care of itself.
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#
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if { $skip != "SKIP" } {
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puts $t "source $test_path/test.tcl"
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}
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puts $t "set script $script"
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# Set up argv for the subprocess, since the args aren't passed in as true
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# arguments thanks to the pipe structure.
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puts $t "set argc [llength $args]"
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puts $t "set argv [list $args]"
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set has_path [file dirname $script]
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if { $has_path != "." } {
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set scr $script
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} else {
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set scr $test_path/$script
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}
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#puts "Script $script: path $has_path, scr $scr"
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puts $t "set scr $scr"
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puts $t {set ret [catch { source $scr } result]}
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puts $t {if { [string length $result] > 0 } { puts $result }}
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puts $t {error_check_good "$scr run: $result: pid [pid]" $ret 0}
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# Close the pipe. This will flush the above commands and actually run the
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# test, and will also return an error a la exec if anything bad happens
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# to the subprocess. The magic here is that closing a pipe blocks
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# and waits for the exit of processes in the pipeline, at least according
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# to Ousterhout (p. 115).
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set ret [catch {close $t} res]
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# Write ending sentinel files--we're done.
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set f [open $testdir/end.$childpid w]
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close $f
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set f [open $testdir/end.$parentpid w]
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close $f
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error_check_good "Pipe close ($childpid: $script $argv: logfile $logfile)"\
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$ret 0
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exit $ret
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