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2013-06-04 Gary Benson <gbenson@redhat.com>

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* objfiles.h (inhibit_section_map_updates): New function
	declaration.
	(resume_section_map_updates): Likewise.
	(resume_section_map_updates_cleanup): Likewise.
	* objfiles.c (objfile_pspace_info): Removed field
	"objfiles_changed_p".  New fields "new_objfiles_available",
	"section_map_dirty" and "inhibit_updates".
	(allocate_objfile): Set new_objfiles_available.
	(free_objfile): Set section_map_dirty.
	(objfile_relocate1): Likewise.
	(in_plt_section): Likewise.
	(find_pc_section): Update the conditions under which the
	section map will be updated.
	(inhibit_section_map_updates): New function.
	(resume_section_map_updates): Likewise.
	(resume_section_map_updates_cleanup): Likewise.
This commit is contained in:
Gary Benson
2013-06-04 12:53:34 +00:00
parent 9ee6a5acd5
commit 607ece04f4
3 changed files with 83 additions and 9 deletions
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57
gdb/objfiles.c
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@ -67,9 +67,18 @@ struct objfile *rt_common_objfile; /* For runtime common symbols */
struct objfile_pspace_info
{
int objfiles_changed_p;
struct obj_section **sections;
int num_sections;
/* Nonzero if object files have been added since the section map
was last updated. */
int new_objfiles_available;
/* Nonzero if the section map MUST be updated before use. */
int section_map_dirty;
/* Nonzero if section map updates should be inhibited if possible. */
int inhibit_updates;
};
/* Per-program-space data key. */
@ -317,7 +326,7 @@ allocate_objfile (bfd *abfd, int flags)
objfile->flags |= flags;
/* Rebuild section map next time we need it. */
get_objfile_pspace_data (objfile->pspace)->objfiles_changed_p = 1;
get_objfile_pspace_data (objfile->pspace)->new_objfiles_available = 1;
return objfile;
}
@ -646,7 +655,7 @@ free_objfile (struct objfile *objfile)
obstack_free (&objfile->objfile_obstack, 0);
/* Rebuild section map next time we need it. */
get_objfile_pspace_data (objfile->pspace)->objfiles_changed_p = 1;
get_objfile_pspace_data (objfile->pspace)->section_map_dirty = 1;
xfree (objfile);
}
@ -826,7 +835,7 @@ objfile_relocate1 (struct objfile *objfile,
}
/* Rebuild section map next time we need it. */
get_objfile_pspace_data (objfile->pspace)->objfiles_changed_p = 1;
get_objfile_pspace_data (objfile->pspace)->section_map_dirty = 1;
/* Update the table in exec_ops, used to read memory. */
ALL_OBJFILE_OSECTIONS (objfile, s)
@ -1291,11 +1300,14 @@ static void
update_section_map (struct program_space *pspace,
struct obj_section ***pmap, int *pmap_size)
{
struct objfile_pspace_info *pspace_info;
int alloc_size, map_size, i;
struct obj_section *s, **map;
struct objfile *objfile;
gdb_assert (get_objfile_pspace_data (pspace)->objfiles_changed_p != 0);
pspace_info = get_objfile_pspace_data (pspace);
gdb_assert (pspace_info->section_map_dirty != 0
|| pspace_info->new_objfiles_available != 0);
map = *pmap;
xfree (map);
@ -1365,7 +1377,9 @@ find_pc_section (CORE_ADDR pc)
return s;
pspace_info = get_objfile_pspace_data (current_program_space);
if (pspace_info->objfiles_changed_p != 0)
if (pspace_info->section_map_dirty
|| (pspace_info->new_objfiles_available
&& !pspace_info->inhibit_updates))
{
update_section_map (current_program_space,
&pspace_info->sections,
@ -1373,7 +1387,8 @@ find_pc_section (CORE_ADDR pc)
/* Don't need updates to section map until objfiles are added,
removed or relocated. */
pspace_info->objfiles_changed_p = 0;
pspace_info->new_objfiles_available = 0;
pspace_info->section_map_dirty = 0;
}
/* The C standard (ISO/IEC 9899:TC2) requires the BASE argument to
@ -1414,14 +1429,38 @@ in_plt_section (CORE_ADDR pc, char *name)
}
/* Set objfiles_changed_p so section map will be rebuilt next time it
/* Set section_map_dirty so section map will be rebuilt next time it
is used. Called by reread_symbols. */
void
objfiles_changed (void)
{
/* Rebuild section map next time we need it. */
get_objfile_pspace_data (current_program_space)->objfiles_changed_p = 1;
get_objfile_pspace_data (current_program_space)->section_map_dirty = 1;
}
/* See comments in objfiles.h. */
void
inhibit_section_map_updates (struct program_space *pspace)
{
get_objfile_pspace_data (pspace)->inhibit_updates = 1;
}
/* See comments in objfiles.h. */
void
resume_section_map_updates (struct program_space *pspace)
{
get_objfile_pspace_data (pspace)->inhibit_updates = 0;
}
/* See comments in objfiles.h. */
void
resume_section_map_updates_cleanup (void *arg)
{
resume_section_map_updates (arg);
}
/* The default implementation for the "iterate_over_objfiles_in_search_order"