On Tue, Jun 03, 2003 at 07:24:04PM -0400, Benjamin Goldberg wrote:
> IIRC, DoD normally happens something vaguely like this:
>
> for my $p (@all_pmcs) {
> clear_is_live_flag($p);
> }
> our $traverse;
> sub set_is_live_flag($p) {
> if( !test_is_live_flag($p) and test_is_agregate($p) ) {
> $traverse = [$p, $traverse];
> }
> really_set_is_live_flag($p);
> }
> set_is_live_flag($_) for @rootset;
> while( $traverse ) {
> ((my $p), $traverse) = splice @$traverse;
> $p->set_live_flag_on_contained_objects();
> }
> for my $p (@all_pmcs) {
> next if test_is_live_flag($p);
> free_pmc($p);
> }
This is something that has concerned me for a while. But does DoD
ensure any kind of ordering for the destruction ?
I ask becasue what happens if an object actually wants
to use its contents during its DESTROY ?
For example Net::POP3::DESTROY will send a reset command to its
server if the user did not call the quit method first. But how
could it do this if the socket PMC was already freed ?
Graham.
