96 lines
3.0 KiB
Tcl
96 lines
3.0 KiB
Tcl
# This file contains internal facilities for Tcl tests.
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#
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# Source this file in the related tests to include from tcl-tests:
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#
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# source [file join [file dirname [info script]] internals.tcl]
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#
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# Copyright (c) 2020 Sergey G. Brester (sebres).
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#
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# See the file "license.terms" for information on usage and redistribution
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# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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if {[namespace which -command ::tcltest::internals::scriptpath] eq ""} {namespace eval ::tcltest::internals {
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namespace path ::tcltest
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::tcltest::ConstraintInitializer testWithLimit { expr {[testConstraint macOrUnix] && ![catch { exec prlimit --version }]} }
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# test-with-limit --
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#
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# Usage: test-with-limit ?-addmem bytes? ?-maxmem bytes? command
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# Options:
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# -addmem - set additional memory limit (in bytes) as difference (extra memory needed to run a test)
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# -maxmem - set absolute maximum address space limit (in bytes)
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#
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proc testWithLimit args {
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set body [lindex $args end]
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array set in [lrange $args 0 end-1]
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# test in child process (with limits):
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set pipe {}
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if {[catch {
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# start new process:
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set pipe [open |[list [interpreter]] r+]
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set ppid [pid $pipe]
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# create prlimit args:
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set args {}
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# with limited address space:
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if {[info exists in(-addmem)] || [info exists in(-maxmem)]} {
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if {[info exists in(-addmem)]} {
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# as differnce to normal usage, so try to retrieve current memory usage:
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if {[catch {
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# using ps (vsz is in KB):
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incr in(-addmem) [expr {[lindex [exec ps -hq $ppid -o vsz] end] * 1024}]
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}]} {
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# ps failed, use default size 20MB:
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incr in(-addmem) 20000000
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# + size of locale-archive (may be up to 100MB):
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incr in(-addmem) [expr {
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[file exists /usr/lib/locale/locale-archive] ?
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[file size /usr/lib/locale/locale-archive] : 0
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}]
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}
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if {![info exists in(-maxmem)]} {
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set in(-maxmem) $in(-addmem)
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}
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set in(-maxmem) [expr { max($in(-addmem), $in(-maxmem)) }]
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}
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append args --as=$in(-maxmem)
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}
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# apply limits:
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exec prlimit -p $ppid {*}$args
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} msg opt]} {
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catch {close $pipe}
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tcltest::Warn "testWithLimit: error - [regsub {^\s*([^\n]*).*$} $msg {\1}]"
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tcltest::Skip testWithLimit
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}
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# execute body, close process and return:
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set ret [catch {
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chan configure $pipe -buffering line
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puts $pipe "puts \[$body\]"
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puts $pipe exit
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set result [read $pipe]
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close $pipe
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set pipe {}
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set result
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} result opt]
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if {$pipe ne ""} { catch { close $pipe } }
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if {$ret && [dict get $opt -errorcode] eq "BYPASS-SKIPPED-TEST"} {
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return {*}$opt $result
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}
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if { ( [info exists in(-warn-on-code)] && $ret in $in(-warn-on-code) )
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|| ( $ret && [info exists in(-warn-on-alloc-error)] && $in(-warn-on-alloc-error)
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&& [regexp {\munable to (?:re)?alloc\M} $result] )
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} {
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tcltest::Warn "testWithLimit: wrong limit, result: $result"
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tcltest::Skip testWithLimit
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}
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return {*}$opt $result
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}
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# export all routines starting with test
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namespace export test*
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# for script path & as mark for loaded
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proc scriptpath {} [list return [info script]]
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}}; # end of internals. |