=back
-=head1 Running Purify
-
-Purify is a commercial tool that is helpful in identifying memory
-overruns, wild pointers, memory leaks and other such badness. Perl
-must be compiled in a specific way for optimal testing with Purify.
-
-Use the following commands to test perl with Purify:
-
- sh Configure -des -Doptimize=-g -Uusemymalloc -Dusemultiplicity \
- -Accflags=-DPURIFY
- setenv PURIFYOPTIONS "-chain-length=25"
- make all pureperl
- cd t
- ln -s ../pureperl perl
- setenv PERL_DESTRUCT_LEVEL 2
- ./perl TEST
-
-Disabling Perl's malloc allows Purify to monitor allocations and leaks
-more closely; using Perl's malloc will make Purify report most leaks
-in the "potential" leaks category. Enabling the multiplicity option
-allows perl to clean up thoroughly when the interpreter shuts down, which
-reduces the number of bogus leak reports from Purify. The -DPURIFY
-enables any Purify-specific debugging code in the sources.
-
-Purify outputs messages in "Viewer" windows by default. If you don't have
-a windowing environment or if you simply want the Purify output to
-unobtrusively go to a log file instead of to the interactive window,
-use the following options instead:
-
- setenv PURIFYOPTIONS "-chain-length=25 -windows=no -log-file=perl.log \
- -append-logfile=yes"
-
-The only currently known leaks happen when there are compile-time errors
-within eval or require. (Fixing these is non-trivial, unfortunately, but
-they must be fixed eventually.)
-
=head1 Common Gotchas
=over 4
implemented in 5.003_05 isn't optimal, but here's what was done:
#ifdef HAS_CHSIZE
- # ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
- # undef my_chsize
+ # ifdef my_chsize /* Probably #defined to Perl_my_chsize */
+ # undef my_chsize /* in embed.h */
# endif
# define my_chsize chsize
#endif
My explanatory comment in patch 5.003_05 said:
- Undef and then re-define my_chsize from Perl_my_chsize to
- just plain chsize if this system HAS_CHSIZE. This probably only
- applies to SCO. This shows the perils of having internal
- functions with the same name as external library functions :-).
+ Undef and then re-define my_chsize from Perl_my_chsize to
+ just plain chsize if this system HAS_CHSIZE. This probably only
+ applies to SCO. This shows the perils of having internal
+ functions with the same name as external library functions :-).
Now, we can safely put C<my_chsize> in C<embed.fnc>, export it, and
hide it with F<embed.h>.
a mail message from Larry:
The main intent of APPLLIB_EXP is for folks who want to send out a
- version of Perl embedded in their product. They would set the symbol
- to be the name of the library containing the files needed to run or to
- support their particular application. This works at the "override"
- level to make sure they get their own versions of any library code that
- they absolutely must have configuration control over.
+ version of Perl embedded in their product. They would set the
+ symbol to be the name of the library containing the files needed
+ to run or to support their particular application. This works at
+ the "override" level to make sure they get their own versions of
+ any library code that they absolutely must have configuration
+ control over.
As such, I don't see any conflict with a sysadmin using it for a
- override-ish sort of thing, when installing a generic Perl. It should
- probably have been named something to do with overriding though. Since
- it's undocumented we could still change it... :-)
+ override-ish sort of thing, when installing a generic Perl. It
+ should probably have been named something to do with overriding
+ though. Since it's undocumented we could still change it... :-)
Given that it's already there, you can use it to override distribution modules.
One way to do that is to add
https://perl5.git.perl.org / perl5.git / blobdiff