On Wed, Apr 1, 2009 at 7:22 PM, Basile STARYNKEVITCH <bas...@starynkevitch.net> wrote: > > Hello All, > > [I don't know if this discussion belongs to gcc@ or gcc-patches@ so I'm > sending it on gcc@ since I don't propose or discuss any code yet] > > My understanding was that most plugins people are aware that somehow some > plugins would need to have static GTY-ed roots for the GGC machinery. > > So it seems to me that we'll need : > > 1. The ability to run gengtype in a special mode for plugins, on the source > code of the plugin. to generate the gt-*.h files included by the source code > of the plugin. This would require a patch to gengtype. > > 2. The ability to handle, very probably using dlsym, or perhaps by having a > gcc_plugin_register_gty_table function called from the plugin initialization > routine, to plug the generated root tables (an array of struct ggc_root_tab, > which is defined in the generated gt-*.h files) of the plugin into the GGC > machinery. This would require a short patch to ggc-common.c or similar > ggc-*.c files. > > Did I miss anything?
Plugins shouldn't keep permanent references to GCed memory. At least that would make it unnecessary to do what you suggest. Richard.
