943 lines
29 KiB
Tcl
943 lines
29 KiB
Tcl
#
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# ttrace.tcl --
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#
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# Copyright (C) 2003 Zoran Vasiljevic, Archiware GmbH. All Rights Reserved.
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#
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# See the file "license.terms" for information on usage and redistribution of
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# this file, and for a DISCLAIMER OF ALL WARRANTIES.
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# ----------------------------------------------------------------------------
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#
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# User level commands:
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#
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# ttrace::eval top-level wrapper (ttrace-savvy eval)
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# ttrace::enable activates registered Tcl command traces
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# ttrace::disable terminates tracing of Tcl commands
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# ttrace::isenabled returns true if ttrace is enabled
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# ttrace::cleanup bring the interp to a pristine state
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# ttrace::update update interp to the latest trace epoch
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# ttrace::config setup some configuration options
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# ttrace::getscript returns a script for initializing interps
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#
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# Commands used for/from trace callbacks:
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#
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# ttrace::atenable register callback to be done at trace enable
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# ttrace::atdisable register callback to be done at trace disable
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# ttrace::addtrace register user-defined tracer callback
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# ttrace::addscript register user-defined script generator
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# ttrace::addresolver register user-defined command resolver
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# ttrace::addcleanup register user-defined cleanup procedures
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# ttrace::addentry adds one entry into the named trace store
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# ttrace::getentry returns the entry value from the named store
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# ttrace::delentry removes the entry from the named store
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# ttrace::getentries returns all entries from the named store
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# ttrace::preload register procedures to be preloaded always
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#
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#
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# Limitations:
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#
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# o. [namespace forget] is still not implemented
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# o. [namespace origin cmd] breaks if cmd is not already defined
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#
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# I left this deliberately. I didn't want to override the [namespace]
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# command in order to avoid potential slowdown.
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#
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namespace eval ttrace {
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# Setup some compatibility wrappers
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if {[info commands nsv_set] != ""} {
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variable tvers 0
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variable mutex ns_mutex
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variable elock [$mutex create traceepochmutex]
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# Import the underlying API; faster than recomputing
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interp alias {} [namespace current]::_array {} nsv_array
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interp alias {} [namespace current]::_incr {} nsv_incr
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interp alias {} [namespace current]::_lappend {} nsv_lappend
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interp alias {} [namespace current]::_names {} nsv_names
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interp alias {} [namespace current]::_set {} nsv_set
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interp alias {} [namespace current]::_unset {} nsv_unset
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} elseif {![catch {
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variable tvers [package require Thread]
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}]} {
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variable mutex thread::mutex
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variable elock [$mutex create]
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# Import the underlying API; faster than recomputing
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interp alias {} [namespace current]::_array {} tsv::array
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interp alias {} [namespace current]::_incr {} tsv::incr
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interp alias {} [namespace current]::_lappend {} tsv::lappend
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interp alias {} [namespace current]::_names {} tsv::names
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interp alias {} [namespace current]::_set {} tsv::set
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interp alias {} [namespace current]::_unset {} tsv::unset
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} else {
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error "requires NaviServer/AOLserver or Tcl threading extension"
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}
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# Keep in sync with the Thread package
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package provide Ttrace 2.8.4
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# Package variables
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variable resolvers "" ; # List of registered resolvers
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variable tracers "" ; # List of registered cmd tracers
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variable scripts "" ; # List of registered script makers
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variable enables "" ; # List of trace-enable callbacks
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variable disables "" ; # List of trace-disable callbacks
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variable preloads "" ; # List of procedure names to preload
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variable enabled 0 ; # True if trace is enabled
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variable config ; # Array with config options
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variable epoch -1 ; # The initialization epoch
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variable cleancnt 0 ; # Counter of registered cleaners
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# Package private namespaces
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namespace eval resolve "" ; # Commands for resolving commands
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namespace eval trace "" ; # Commands registered for tracing
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namespace eval enable "" ; # Commands invoked at trace enable
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namespace eval disable "" ; # Commands invoked at trace disable
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namespace eval script "" ; # Commands for generating scripts
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# Exported commands
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namespace export unknown
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# Initialize ttrace shared state
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if {[_array exists ttrace] == 0} {
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_set ttrace lastepoch $epoch
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_set ttrace epochlist ""
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}
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# Initially, allow creation of epochs
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set config(-doepochs) 1
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proc eval {cmd args} {
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enable
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set code [catch {uplevel 1 [concat $cmd $args]} result]
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disable
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if {$code == 0} {
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if {[llength [info commands ns_ictl]]} {
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ns_ictl save [getscript]
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} else {
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thread::broadcast {
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package require Ttrace
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ttrace::update
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}
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}
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}
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return -code $code \
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-errorinfo $::errorInfo -errorcode $::errorCode $result
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}
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proc config {args} {
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variable config
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if {[llength $args] == 0} {
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array get config
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} elseif {[llength $args] == 1} {
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set opt [lindex $args 0]
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set config($opt)
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} else {
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set opt [lindex $args 0]
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set val [lindex $args 1]
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set config($opt) $val
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}
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}
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proc enable {} {
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variable config
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variable tracers
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variable enables
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variable enabled
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incr enabled 1
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if {$enabled > 1} {
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return
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}
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if {$config(-doepochs) != 0} {
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variable epoch [_newepoch]
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}
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set nsp [namespace current]
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foreach enabler $enables {
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enable::_$enabler
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}
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foreach trace $tracers {
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if {[info commands $trace] != ""} {
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trace add execution $trace leave ${nsp}::trace::_$trace
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}
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}
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}
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proc disable {} {
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variable enabled
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variable tracers
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variable disables
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incr enabled -1
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if {$enabled > 0} {
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return
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}
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set nsp [namespace current]
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foreach disabler $disables {
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disable::_$disabler
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}
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foreach trace $tracers {
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if {[info commands $trace] != ""} {
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trace remove execution $trace leave ${nsp}::trace::_$trace
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}
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}
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}
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proc isenabled {} {
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variable enabled
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expr {$enabled > 0}
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}
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proc update {{from -1}} {
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if {$from == -1} {
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variable epoch [_set ttrace lastepoch]
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} else {
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if {[lsearch [_set ttrace epochlist] $from] == -1} {
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error "no such epoch: $from"
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}
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variable epoch $from
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}
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uplevel [getscript]
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}
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proc getscript {} {
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variable preloads
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variable epoch
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variable scripts
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append script [_serializensp] \n
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append script "::namespace eval [namespace current] {" \n
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append script "::namespace export unknown" \n
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append script "_useepoch $epoch" \n
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append script "}" \n
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foreach cmd $preloads {
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append script [_serializeproc $cmd] \n
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}
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foreach maker $scripts {
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append script [script::_$maker]
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}
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return $script
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}
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proc cleanup {args} {
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foreach cmd [info commands resolve::cleaner_*] {
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uplevel $cmd $args
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}
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}
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proc preload {cmd} {
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variable preloads
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if {[lsearch $preloads $cmd] == -1} {
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lappend preloads $cmd
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}
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}
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proc atenable {cmd arglist body} {
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variable enables
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if {[lsearch $enables $cmd] == -1} {
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lappend enables $cmd
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set cmd [namespace current]::enable::_$cmd
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proc $cmd $arglist $body
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return $cmd
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}
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}
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proc atdisable {cmd arglist body} {
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variable disables
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if {[lsearch $disables $cmd] == -1} {
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lappend disables $cmd
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set cmd [namespace current]::disable::_$cmd
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proc $cmd $arglist $body
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return $cmd
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}
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}
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proc addtrace {cmd arglist body} {
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variable tracers
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if {[lsearch $tracers $cmd] == -1} {
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lappend tracers $cmd
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set tracer [namespace current]::trace::_$cmd
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proc $tracer $arglist $body
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if {[isenabled]} {
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trace add execution $cmd leave $tracer
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}
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return $tracer
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}
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}
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proc addscript {cmd body} {
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variable scripts
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if {[lsearch $scripts $cmd] == -1} {
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lappend scripts $cmd
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set cmd [namespace current]::script::_$cmd
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proc $cmd args $body
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return $cmd
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}
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}
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proc addresolver {cmd arglist body} {
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variable resolvers
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if {[lsearch $resolvers $cmd] == -1} {
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lappend resolvers $cmd
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set cmd [namespace current]::resolve::$cmd
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proc $cmd $arglist $body
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return $cmd
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}
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}
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proc addcleanup {body} {
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variable cleancnt
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set cmd [namespace current]::resolve::cleaner_[incr cleancnt]
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proc $cmd args $body
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return $cmd
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}
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proc addentry {cmd var val} {
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variable epoch
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_set ${epoch}-$cmd $var $val
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}
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proc delentry {cmd var} {
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variable epoch
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set ei $::errorInfo
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set ec $::errorCode
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catch {_unset ${epoch}-$cmd $var}
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set ::errorInfo $ei
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set ::errorCode $ec
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}
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proc getentry {cmd var} {
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variable epoch
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set ei $::errorInfo
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set ec $::errorCode
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if {[catch {_set ${epoch}-$cmd $var} val]} {
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set ::errorInfo $ei
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set ::errorCode $ec
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set val ""
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}
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return $val
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}
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proc getentries {cmd {pattern *}} {
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variable epoch
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_array names ${epoch}-$cmd $pattern
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}
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proc unknown {args} {
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set cmd [lindex $args 0]
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if {[uplevel ttrace::_resolve [list $cmd]]} {
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set c [catch {uplevel $cmd [lrange $args 1 end]} r]
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} else {
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set c [catch {::eval ::tcl::unknown $args} r]
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}
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return -code $c -errorcode $::errorCode -errorinfo $::errorInfo $r
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}
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proc _resolve {cmd} {
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variable resolvers
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foreach resolver $resolvers {
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if {[uplevel [info comm resolve::$resolver] [list $cmd]]} {
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return 1
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}
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}
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return 0
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}
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proc _getthread {} {
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if {[info commands ns_thread] == ""} {
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thread::id
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} else {
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ns_thread getid
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}
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}
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proc _getthreads {} {
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if {[info commands ns_thread] == ""} {
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return [thread::names]
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} else {
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foreach entry [ns_info threads] {
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lappend threads [lindex $entry 2]
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}
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return $threads
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}
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}
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proc _newepoch {} {
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variable elock
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variable mutex
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$mutex lock $elock
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set old [_set ttrace lastepoch]
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set new [_incr ttrace lastepoch]
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_lappend ttrace $new [_getthread]
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if {$old >= 0} {
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_copyepoch $old $new
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_delepochs
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}
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_lappend ttrace epochlist $new
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$mutex unlock $elock
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return $new
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}
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proc _copyepoch {old new} {
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foreach var [_names $old-*] {
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set cmd [lindex [split $var -] 1]
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_array reset $new-$cmd [_array get $var]
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}
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}
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proc _delepochs {} {
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set tlist [_getthreads]
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set elist ""
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foreach epoch [_set ttrace epochlist] {
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if {[_dropepoch $epoch $tlist] == 0} {
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lappend elist $epoch
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} else {
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_unset ttrace $epoch
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}
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}
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_set ttrace epochlist $elist
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}
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proc _dropepoch {epoch threads} {
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set self [_getthread]
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foreach tid [_set ttrace $epoch] {
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if {$tid != $self && [lsearch $threads $tid] >= 0} {
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lappend alive $tid
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}
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}
|
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if {[info exists alive]} {
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_set ttrace $epoch $alive
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return 0
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} else {
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foreach var [_names $epoch-*] {
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_unset $var
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}
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||
return 1
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}
|
||
}
|
||
|
||
proc _useepoch {epoch} {
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if {$epoch >= 0} {
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set tid [_getthread]
|
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if {[lsearch [_set ttrace $epoch] $tid] == -1} {
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_lappend ttrace $epoch $tid
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}
|
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}
|
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}
|
||
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proc _serializeproc {cmd} {
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set dargs [info args $cmd]
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set pbody [info body $cmd]
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set pargs ""
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foreach arg $dargs {
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if {![info default $cmd $arg def]} {
|
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lappend pargs $arg
|
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} else {
|
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lappend pargs [list $arg $def]
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}
|
||
}
|
||
set nsp [namespace qual $cmd]
|
||
if {$nsp == ""} {
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set nsp "::"
|
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}
|
||
append res [list ::namespace eval $nsp] " {" \n
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append res [list ::proc [namespace tail $cmd] $pargs $pbody] \n
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||
append res "}" \n
|
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}
|
||
|
||
proc _serializensp {{nsp ""} {result _}} {
|
||
upvar $result res
|
||
if {$nsp == ""} {
|
||
set nsp [namespace current]
|
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}
|
||
append res [list ::namespace eval $nsp] " {" \n
|
||
foreach var [info vars ${nsp}::*] {
|
||
set vname [namespace tail $var]
|
||
if {[array exists $var] == 0} {
|
||
append res [list ::variable $vname [set $var]] \n
|
||
} else {
|
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append res [list ::variable $vname] \n
|
||
append res [list ::array set $vname [array get $var]] \n
|
||
}
|
||
}
|
||
foreach cmd [info procs ${nsp}::*] {
|
||
append res [_serializeproc $cmd] \n
|
||
}
|
||
append res "}" \n
|
||
foreach nn [namespace children $nsp] {
|
||
_serializensp $nn res
|
||
}
|
||
return $res
|
||
}
|
||
}
|
||
|
||
#
|
||
# The code below is ment to be run once during the application start. It
|
||
# provides implementation of tracing callbacks for some Tcl commands. Users
|
||
# can supply their own tracer implementations on-the-fly.
|
||
#
|
||
# The code below will create traces for the following Tcl commands:
|
||
# "namespace", "variable", "load", "proc" and "rename"
|
||
#
|
||
# Also, the Tcl object extension XOTcl 1.1.0 is handled and all XOTcl related
|
||
# things, like classes and objects are traced (many thanks to Gustaf Neumann
|
||
# from XOTcl for his kind help and support).
|
||
#
|
||
|
||
eval {
|
||
|
||
#
|
||
# Register the "load" trace. This will create the following key/value pair
|
||
# in the "load" store:
|
||
#
|
||
# --- key ---- --- value ---
|
||
# <path_of_loaded_image> <name_of_the_init_proc>
|
||
#
|
||
# We normally need only the name_of_the_init_proc for being able to load
|
||
# the package in other interpreters, but we store the path to the image
|
||
# file as well.
|
||
#
|
||
|
||
ttrace::addtrace load {cmdline code args} {
|
||
if {$code != 0} {
|
||
return
|
||
}
|
||
set image [lindex $cmdline 1]
|
||
set initp [lindex $cmdline 2]
|
||
if {$initp == ""} {
|
||
foreach pkg [info loaded] {
|
||
if {[lindex $pkg 0] == $image} {
|
||
set initp [lindex $pkg 1]
|
||
}
|
||
}
|
||
}
|
||
ttrace::addentry load $image $initp
|
||
}
|
||
|
||
ttrace::addscript load {
|
||
append res "\n"
|
||
foreach entry [ttrace::getentries load] {
|
||
set initp [ttrace::getentry load $entry]
|
||
append res "::load {} $initp" \n
|
||
}
|
||
return $res
|
||
}
|
||
|
||
#
|
||
# Register the "namespace" trace. This will create the following key/value
|
||
# entry in "namespace" store:
|
||
#
|
||
# --- key ---- --- value ---
|
||
# ::fully::qualified::namespace 1
|
||
#
|
||
# It will also fill the "proc" store for procedures and commands imported
|
||
# in this namespace with following:
|
||
#
|
||
# --- key ---- --- value ---
|
||
# ::fully::qualified::proc [list <ns> "" ""]
|
||
#
|
||
# The <ns> is the name of the namespace where the command or procedure is
|
||
# imported from.
|
||
#
|
||
|
||
ttrace::addtrace namespace {cmdline code args} {
|
||
if {$code != 0} {
|
||
return
|
||
}
|
||
set nop [lindex $cmdline 1]
|
||
set cns [uplevel namespace current]
|
||
if {$cns == "::"} {
|
||
set cns ""
|
||
}
|
||
switch -glob $nop {
|
||
eva* {
|
||
set nsp [lindex $cmdline 2]
|
||
if {![string match "::*" $nsp]} {
|
||
set nsp ${cns}::$nsp
|
||
}
|
||
ttrace::addentry namespace $nsp 1
|
||
}
|
||
imp* {
|
||
# - parse import arguments (skip opt "-force")
|
||
set opts [lrange $cmdline 2 end]
|
||
if {[string match "-fo*" [lindex $opts 0]]} {
|
||
set opts [lrange $cmdline 3 end]
|
||
}
|
||
# - register all imported procs and commands
|
||
foreach opt $opts {
|
||
if {![string match "::*" [::namespace qual $opt]]} {
|
||
set opt ${cns}::$opt
|
||
}
|
||
# - first import procs
|
||
foreach entry [ttrace::getentries proc $opt] {
|
||
set cmd ${cns}::[::namespace tail $entry]
|
||
set nsp [::namespace qual $entry]
|
||
set done($cmd) 1
|
||
set entry [list 0 $nsp "" ""]
|
||
ttrace::addentry proc $cmd $entry
|
||
}
|
||
|
||
# - then import commands
|
||
foreach entry [info commands $opt] {
|
||
set cmd ${cns}::[::namespace tail $entry]
|
||
set nsp [::namespace qual $entry]
|
||
if {[info exists done($cmd)] == 0} {
|
||
set entry [list 0 $nsp "" ""]
|
||
ttrace::addentry proc $cmd $entry
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
ttrace::addscript namespace {
|
||
append res \n
|
||
foreach entry [ttrace::getentries namespace] {
|
||
append res "::namespace eval $entry {}" \n
|
||
}
|
||
return $res
|
||
}
|
||
|
||
#
|
||
# Register the "variable" trace. This will create the following key/value
|
||
# entry in the "variable" store:
|
||
#
|
||
# --- key ---- --- value ---
|
||
# ::fully::qualified::variable 1
|
||
#
|
||
# The variable value itself is ignored at the time of
|
||
# trace/collection. Instead, we take the real value at the time of script
|
||
# generation.
|
||
#
|
||
|
||
ttrace::addtrace variable {cmdline code args} {
|
||
if {$code != 0} {
|
||
return
|
||
}
|
||
set opts [lrange $cmdline 1 end]
|
||
if {[llength $opts]} {
|
||
set cns [uplevel namespace current]
|
||
if {$cns == "::"} {
|
||
set cns ""
|
||
}
|
||
foreach {var val} $opts {
|
||
if {![string match "::*" $var]} {
|
||
set var ${cns}::$var
|
||
}
|
||
ttrace::addentry variable $var 1
|
||
}
|
||
}
|
||
}
|
||
|
||
ttrace::addscript variable {
|
||
append res \n
|
||
foreach entry [ttrace::getentries variable] {
|
||
set cns [namespace qual $entry]
|
||
set var [namespace tail $entry]
|
||
append res "::namespace eval $cns {" \n
|
||
append res "::variable $var"
|
||
if {[array exists $entry]} {
|
||
append res "\n::array set $var [list [array get $entry]]" \n
|
||
} elseif {[info exists $entry]} {
|
||
append res " [list [set $entry]]" \n
|
||
} else {
|
||
append res \n
|
||
}
|
||
append res "}" \n
|
||
}
|
||
return $res
|
||
}
|
||
|
||
|
||
#
|
||
# Register the "rename" trace. It will create the following key/value pair
|
||
# in "rename" store:
|
||
#
|
||
# --- key ---- --- value ---
|
||
# ::fully::qualified::old ::fully::qualified::new
|
||
#
|
||
# The "new" value may be empty, for commands that have been deleted. In
|
||
# such cases we also remove any traced procedure definitions.
|
||
#
|
||
|
||
ttrace::addtrace rename {cmdline code args} {
|
||
if {$code != 0} {
|
||
return
|
||
}
|
||
set cns [uplevel namespace current]
|
||
if {$cns == "::"} {
|
||
set cns ""
|
||
}
|
||
set old [lindex $cmdline 1]
|
||
if {![string match "::*" $old]} {
|
||
set old ${cns}::$old
|
||
}
|
||
set new [lindex $cmdline 2]
|
||
if {$new != ""} {
|
||
if {![string match "::*" $new]} {
|
||
set new ${cns}::$new
|
||
}
|
||
ttrace::addentry rename $old $new
|
||
} else {
|
||
ttrace::delentry proc $old
|
||
}
|
||
}
|
||
|
||
ttrace::addscript rename {
|
||
append res \n
|
||
foreach old [ttrace::getentries rename] {
|
||
set new [ttrace::getentry rename $old]
|
||
append res "::rename $old {$new}" \n
|
||
}
|
||
return $res
|
||
}
|
||
|
||
#
|
||
# Register the "proc" trace. This will create the following key/value pair
|
||
# in the "proc" store:
|
||
#
|
||
# --- key ---- --- value ---
|
||
# ::fully::qualified::proc [list <epoch> <ns> <arglist> <body>]
|
||
#
|
||
# The <epoch> chages anytime one (re)defines a proc. The <ns> is the
|
||
# namespace where the command was imported from. If empty, the <arglist>
|
||
# and <body> will hold the actual procedure definition. See the
|
||
# "namespace" tracer implementation also.
|
||
#
|
||
|
||
ttrace::addtrace proc {cmdline code args} {
|
||
if {$code != 0} {
|
||
return
|
||
}
|
||
set cns [uplevel namespace current]
|
||
if {$cns == "::"} {
|
||
set cns ""
|
||
}
|
||
set cmd [lindex $cmdline 1]
|
||
if {![string match "::*" $cmd]} {
|
||
set cmd ${cns}::$cmd
|
||
}
|
||
set dargs [info args $cmd]
|
||
set pbody [info body $cmd]
|
||
set pargs ""
|
||
foreach arg $dargs {
|
||
if {![info default $cmd $arg def]} {
|
||
lappend pargs $arg
|
||
} else {
|
||
lappend pargs [list $arg $def]
|
||
}
|
||
}
|
||
set pdef [ttrace::getentry proc $cmd]
|
||
if {$pdef == ""} {
|
||
set epoch -1 ; # never traced before
|
||
} else {
|
||
set epoch [lindex $pdef 0]
|
||
}
|
||
ttrace::addentry proc $cmd [list [incr epoch] "" $pargs $pbody]
|
||
}
|
||
|
||
ttrace::addscript proc {
|
||
return {
|
||
if {[info command ::tcl::unknown] == ""} {
|
||
rename ::unknown ::tcl::unknown
|
||
namespace import -force ::ttrace::unknown
|
||
}
|
||
if {[info command ::tcl::info] == ""} {
|
||
rename ::info ::tcl::info
|
||
}
|
||
proc ::info args {
|
||
set cmd [lindex $args 0]
|
||
set hit [lsearch -glob {commands procs args default body} $cmd*]
|
||
if {$hit > 1} {
|
||
if {[catch {uplevel ::tcl::info $args}]} {
|
||
uplevel ttrace::_resolve [list [lindex $args 1]]
|
||
}
|
||
return [uplevel ::tcl::info $args]
|
||
}
|
||
if {$hit == -1} {
|
||
return [uplevel ::tcl::info $args]
|
||
}
|
||
set cns [uplevel namespace current]
|
||
if {$cns == "::"} {
|
||
set cns ""
|
||
}
|
||
set pat [lindex $args 1]
|
||
if {![string match "::*" $pat]} {
|
||
set pat ${cns}::$pat
|
||
}
|
||
set fns [ttrace::getentries proc $pat]
|
||
if {[string match $cmd* commands]} {
|
||
set fns [concat $fns [ttrace::getentries xotcl $pat]]
|
||
}
|
||
foreach entry $fns {
|
||
if {$cns != [namespace qual $entry]} {
|
||
set lazy($entry) 1
|
||
} else {
|
||
set lazy([namespace tail $entry]) 1
|
||
}
|
||
}
|
||
foreach entry [uplevel ::tcl::info $args] {
|
||
set lazy($entry) 1
|
||
}
|
||
array names lazy
|
||
}
|
||
}
|
||
}
|
||
|
||
#
|
||
# Register procedure resolver. This will try to resolve the command in the
|
||
# current namespace first, and if not found, in global namespace. It also
|
||
# handles commands imported from other namespaces.
|
||
#
|
||
|
||
ttrace::addresolver resolveprocs {cmd {export 0}} {
|
||
set cns [uplevel namespace current]
|
||
set name [namespace tail $cmd]
|
||
if {$cns == "::"} {
|
||
set cns ""
|
||
}
|
||
if {![string match "::*" $cmd]} {
|
||
set ncmd ${cns}::$cmd
|
||
set gcmd ::$cmd
|
||
} else {
|
||
set ncmd $cmd
|
||
set gcmd $cmd
|
||
}
|
||
set pdef [ttrace::getentry proc $ncmd]
|
||
if {$pdef == ""} {
|
||
set pdef [ttrace::getentry proc $gcmd]
|
||
if {$pdef == ""} {
|
||
return 0
|
||
}
|
||
set cmd $gcmd
|
||
} else {
|
||
set cmd $ncmd
|
||
}
|
||
set epoch [lindex $pdef 0]
|
||
set pnsp [lindex $pdef 1]
|
||
if {$pnsp != ""} {
|
||
set nsp [namespace qual $cmd]
|
||
if {$nsp == ""} {
|
||
set nsp ::
|
||
}
|
||
set cmd ${pnsp}::$name
|
||
if {[resolveprocs $cmd 1] == 0 && [info commands $cmd] == ""} {
|
||
return 0
|
||
}
|
||
namespace eval $nsp "namespace import -force $cmd"
|
||
} else {
|
||
uplevel 0 [list ::proc $cmd [lindex $pdef 2] [lindex $pdef 3]]
|
||
if {$export} {
|
||
set nsp [namespace qual $cmd]
|
||
if {$nsp == ""} {
|
||
set nsp ::
|
||
}
|
||
namespace eval $nsp "namespace export $name"
|
||
}
|
||
}
|
||
variable resolveproc
|
||
set resolveproc($cmd) $epoch
|
||
return 1
|
||
}
|
||
|
||
#
|
||
# For XOTcl, the entire item introspection/tracing is delegated to XOTcl
|
||
# itself. The xotcl store is filled with this:
|
||
#
|
||
# --- key ---- --- value ---
|
||
# ::fully::qualified::item <body>
|
||
#
|
||
# The <body> is the script used to generate the entire item (class,
|
||
# object). Note that we do not fill in this during code tracing. It is
|
||
# done during the script generation. In this step, only the placeholder is
|
||
# set.
|
||
#
|
||
# NOTE: we assume all XOTcl commands are imported in global namespace
|
||
#
|
||
|
||
ttrace::atenable XOTclEnabler {args} {
|
||
if {[info commands ::xotcl::Class] == ""} {
|
||
return
|
||
}
|
||
if {[info commands ::xotcl::_creator] == ""} {
|
||
::xotcl::Class create ::xotcl::_creator -instproc create {args} {
|
||
set result [next]
|
||
if {![string match ::xotcl::_* $result]} {
|
||
ttrace::addentry xotcl $result ""
|
||
}
|
||
return $result
|
||
}
|
||
}
|
||
::xotcl::Class instmixin ::xotcl::_creator
|
||
}
|
||
|
||
ttrace::atdisable XOTclDisabler {args} {
|
||
if { [info commands ::xotcl::Class] == ""
|
||
|| [info commands ::xotcl::_creator] == ""} {
|
||
return
|
||
}
|
||
::xotcl::Class instmixin ""
|
||
::xotcl::_creator destroy
|
||
}
|
||
|
||
set resolver [ttrace::addresolver resolveclasses {classname} {
|
||
set cns [uplevel namespace current]
|
||
set script [ttrace::getentry xotcl $classname]
|
||
if {$script == ""} {
|
||
set name [namespace tail $classname]
|
||
if {$cns == "::"} {
|
||
set script [ttrace::getentry xotcl ::$name]
|
||
} else {
|
||
set script [ttrace::getentry xotcl ${cns}::$name]
|
||
if {$script == ""} {
|
||
set script [ttrace::getentry xotcl ::$name]
|
||
}
|
||
}
|
||
if {$script == ""} {
|
||
return 0
|
||
}
|
||
}
|
||
uplevel [list namespace eval $cns $script]
|
||
return 1
|
||
}]
|
||
|
||
ttrace::addscript xotcl [subst -nocommands {
|
||
if {![catch {Serializer new} ss]} {
|
||
foreach entry [ttrace::getentries xotcl] {
|
||
if {[ttrace::getentry xotcl \$entry] == ""} {
|
||
ttrace::addentry xotcl \$entry [\$ss serialize \$entry]
|
||
}
|
||
}
|
||
\$ss destroy
|
||
return {::xotcl::Class proc __unknown name {$resolver \$name}}
|
||
}
|
||
}]
|
||
|
||
#
|
||
# Register callback to be called on cleanup. This will trash lazily loaded
|
||
# procs which have changed since.
|
||
#
|
||
|
||
ttrace::addcleanup {
|
||
variable resolveproc
|
||
foreach cmd [array names resolveproc] {
|
||
set def [ttrace::getentry proc $cmd]
|
||
if {$def != ""} {
|
||
set new [lindex $def 0]
|
||
set old $resolveproc($cmd)
|
||
if {[info command $cmd] != "" && $new != $old} {
|
||
catch {rename $cmd ""}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
# EOF
|
||
return
|
||
|
||
# Local Variables:
|
||
# mode: tcl
|
||
# fill-column: 78
|
||
# tab-width: 8
|
||
# indent-tabs-mode: nil
|
||
# End:
|