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Add gdb.free_objfile event registry

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Currently, Python code can use event registries to detect when gdb
loads a new objfile, and when gdb clears the objfile list.  However,
there's no way to detect the removal of an objfile, say when the
inferior calls dlclose.

This patch adds a gdb.free_objfile event registry and arranges for an
event to be emitted in this case.
This commit is contained in:
Tom Tromey
2022-06-20 11:30:04 -06:00
parent 23948f5602
commit 0b4fe76f95
9 changed files with 208 additions and 0 deletions
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11
gdb/doc/python.texi
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@ -3494,6 +3494,17 @@ A reference to the object file (@code{gdb.Objfile}) which has been loaded.
@xref{Objfiles In Python}, for details of the @code{gdb.Objfile} object.
@end defvar
@item events.free_objfile
Emits @code{gdb.FreeObjFileEvent} which indicates that an object file
is about to be removed from @value{GDBN}. One reason this can happen
is when the inferior calls @code{dlclose}.
@code{gdb.FreeObjFileEvent} has one attribute:
@defvar NewObjFileEvent.objfile
A reference to the object file (@code{gdb.Objfile}) which will be unloaded.
@xref{Objfiles In Python}, for details of the @code{gdb.Objfile} object.
@end defvar
@item events.clear_objfiles
Emits @code{gdb.ClearObjFilesEvent} which indicates that the list of object
files for a program space has been reset.