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* [Bug compile/17938] New: Calling clear_symtab_users is indeed too costly
@ 2015-02-06 22:53 dje at google dot com
0 siblings, 0 replies; only message in thread
From: dje at google dot com @ 2015-02-06 22:53 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=17938
Bug ID: 17938
Summary: Calling clear_symtab_users is indeed too costly
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: compile
Assignee: unassigned at sourceware dot org
Reporter: dje at google dot com
compile-object-run.c has this:
/* It may be a bit too pervasive in this dummy_frame dtor callback. */
clear_symtab_users (0);
This is indeed too pervasive (costly).
Python scripts will get a clear_objfiles event which an trigger large scale
flushing of cached data. Plus it will flush the symbol lookup cache.
Earlier the function does this:
free_objfile (objfile);
What we need on the python side is an objfile_freed event.
Are there other reasons why clear_symtab_users is called here?
I see that free_objfile does some of the things that clear_symtab_users does.
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2015-02-06 22:53 [Bug compile/17938] New: Calling clear_symtab_users is indeed too costly dje at google dot com
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