[PATCH v2 1/3] gdb: add inferior_cloned observable

Simon Marchi via Gdb-patches
2023-09-14T16:15:27Z

The following patch makes the amdgpu port transfer a property from the
original inferior to the new inferior when using the clone-inferior
command. Add the inferior_cloned observable to help with this.

Change-Id: Id845a799813ec49b1b7b2fcb97b07d0a1e5e2631
Approved-By: Tom Tromey <tom@tromey.com>
---
gdb/inferior.c | 2 ++
gdb/observable.c | 1 +
gdb/observable.h | 4 ++++
3 files changed, 7 insertions(+)

diff --git a/gdb/inferior.c b/gdb/inferior.c
index ce4960a508aa..550bbd2827c0 100644
--- a/gdb/inferior.c
+++ b/gdb/inferior.c
@@ -1041,6 +1041,8 @@ clone_inferior_command (const char *args, int from_tty)
for (const std::string &unset_var
: orginf->environment.user_unset_env ())
inf->environment.unset (unset_var.c_str ());
+
+ gdb::observers::inferior_cloned.notify (orginf, inf);
}
}

diff --git a/gdb/observable.c b/gdb/observable.c
index a18b863fb471..33e51223cf41 100644
--- a/gdb/observable.c
+++ b/gdb/observable.c
@@ -58,6 +58,7 @@ DEFINE_OBSERVABLE (inferior_appeared);
DEFINE_OBSERVABLE (inferior_pre_detach);
DEFINE_OBSERVABLE (inferior_exit);
DEFINE_OBSERVABLE (inferior_removed);
+DEFINE_OBSERVABLE (inferior_cloned);
DEFINE_OBSERVABLE (memory_changed);
DEFINE_OBSERVABLE (before_prompt);
DEFINE_OBSERVABLE (gdb_datadir_changed);
diff --git a/gdb/observable.h b/gdb/observable.h
index c0bafc51f143..4ea203c6fc38 100644
--- a/gdb/observable.h
+++ b/gdb/observable.h
@@ -172,6 +172,10 @@ extern observable<struct inferior */* inf */> inferior_exit;
This method is called immediately before freeing INF. */
extern observable<struct inferior */* inf */> inferior_removed;

+/* The inferior CLONE has been created by cloning INF. */
+extern observable<struct inferior */* inf */, struct inferior */* clone */>
+ inferior_cloned;
+
/* Bytes from DATA to DATA + LEN have been written to the inferior
at ADDR. */
extern observable<struct inferior */* inferior */, CORE_ADDR /* addr */,

base-commit: d7680f13df105aa8fa0edbdf8efae31a5411f579
--
2.42.0