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Postings from March 2000
On 22 Mar 2000 16:01:55 +0100, Ulrich Pfeifer wrote:
>>>>>> "Uli" == Ulrich Pfeifer <pfeifer@wait.de> writes:
>
> Uli> I'll build a debugging version of perl now ....
> ,-----
> |
> | Does not reveal too much:
> |
> | 223 void * libref = INT2PTR(void *,SvIV(ST(0)));
> | (gdb) n
> | 225 dXSTARG;
> | (gdb) x libref
> | 0x8218c50: 0x401a0000
> | (gdb) n
> | Cannot access memory at address 0x406cd014.
> | (gdb) where
> | #0 0x4000a43d in _dl_debug_state () from /lib/ld-linux.so.2
> | #1 0x4014d2af in _dl_close () from /lib/libc.so.6
> | #2 0x400663b7 in dlopen () from /lib/libdl.so.2
> | #3 0x4000a145 in _dl_catch_error () from /lib/ld-linux.so.2
> | #4 0x4006693e in dlerror () from /lib/libdl.so.2
> | #5 0x400663dd in dlclose () from /lib/libdl.so.2
> | #6 0x805a4c9 in XS_DynaLoader_dl_unload_file (cv=0x818ef5c)
> | at DynaLoader.xs:202
FYI.
Sarathy
gsar@ActiveState.com
-----------------------------------8<-----------------------------------
Change 5885 by gsar@auger on 2000/03/22 18:41:50
make unloading of extension shared objects (change#5381) a build
option (use "Configure -Accflags=-DDL_UNLOAD_ALL_AT_EXIT" to enable)
Affected files ...
... //depot/perl/ext/DynaLoader/dlutils.c#17 edit
... //depot/perl/pod/perldelta.pod#199 edit
Differences ...
==== //depot/perl/ext/DynaLoader/dlutils.c#17 (text) ====
Index: perl/ext/DynaLoader/dlutils.c
--- perl/ext/DynaLoader/dlutils.c.~1~ Wed Mar 22 10:41:56 2000
+++ perl/ext/DynaLoader/dlutils.c Wed Mar 22 10:41:56 2000
@@ -69,7 +69,9 @@
if (!dl_loaded_files)
dl_loaded_files = newHV(); /* provide cache for dl_*.xs if needed */
#endif
+#ifdef DL_UNLOAD_ALL_AT_EXIT
call_atexit(&dl_unload_all_files, (void*)0);
+#endif
}
==== //depot/perl/pod/perldelta.pod#199 (text) ====
Index: perl/pod/perldelta.pod
--- perl/pod/perldelta.pod.~1~ Wed Mar 22 10:41:56 2000
+++ perl/pod/perldelta.pod Wed Mar 22 10:41:56 2000
@@ -1484,6 +1484,16 @@
The Dumpvalue module provides screen dumps of Perl data.
+=item DynaLoader
+
+DynaLoader now supports a dl_unload_file() function on platforms that
+support unloading shared objects using dlclose().
+
+Perl can also optionally arrange to unload all extension shared objects
+loaded by Perl. To enable this, build Perl with the Configure option
+C<-Accflags=-DDL_UNLOAD_ALL_AT_EXIT>. (This maybe useful if you are
+using Apache with mod_perl.)
+
=item Benchmark
Overall, Benchmark results exhibit lower average error and better timing
@@ -1852,6 +1862,11 @@
a two-element list containing the fully qualified directory name and
the filename. See L<Win32>.
+=item XSLoader
+
+The XSLoader extension is a simpler alternative to DynaLoader.
+See L<XSLoader>.
+
=item DBM Filters
A new feature called "DBM Filters" has been added to all the
End of Patch.
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