hi,
i'm not on this list so please cc:[EMAIL PROTECTED] in your
reply.
also this is not really a mod_perl question - i'm currently
investigation "apachectl restart" problem in PHP 4...
the problem i'm having is that if you do an "apachectl
restart" (not graceful!) - the execution of the script gets
interrupted at an undefined spot (because PHP 4 does not
catch that signal - does mod_perl?). after that has happened
the httpd-core will run the child-exit handlers for the
child. PHP now tries to free all memory and close all open
db-connections and all other resources. as we are in an
undefined state some bad things can happen:
- if we are just in the "middle" of setting us some parser
internal stuctures we might SEGFAULT when trying to free
them as they might not yet be valid structures.
- if we are in the middle of an 3th partly library call
(eg mysql_exec) - we'll recursivly call the mysql
client-lib with is in an unknown state (which might be bad)
- even if we were interrupted in the middle of a strcpy()
call we might end up with an not-yet zero-terminated
string, which might cause trouble in our cleanup code.
the very same problem would not only appear when calling
"apachectl restart" but also when the request hit one of it
timeouts.
i would be very interested in finding out how mod_perl
handles all this.
re,
tc
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