[v2,4/8] gdb: add inferior_pre_detach observable
Commit Message
From: Simon Marchi <simon.marchi@efficios.com>
Add an observable notified in target_detach just before calling the
detach method on the inferior's target stack. This allows observer to
do some work on the inferior while it's still ptrace-attached, in the
case of a native Linux inferior. Specifically, the amd-dbgapi target
will need it in order to call amd_dbgapi_process_detach before the
process gets ptrace-detached.
Change-Id: I28b6065e251012a4c2db8a600fe13ba31671e3c9
Approved-By: Andrew Burgess <aburgess@redhat.com>
---
gdb/observable.c | 1 +
gdb/observable.h | 3 +++
gdb/target.c | 2 ++
3 files changed, 6 insertions(+)
@@ -62,6 +62,7 @@ DEFINE_OBSERVABLE (architecture_changed);
DEFINE_OBSERVABLE (thread_ptid_changed);
DEFINE_OBSERVABLE (inferior_added);
DEFINE_OBSERVABLE (inferior_appeared);
+DEFINE_OBSERVABLE (inferior_pre_detach);
DEFINE_OBSERVABLE (inferior_exit);
DEFINE_OBSERVABLE (inferior_removed);
DEFINE_OBSERVABLE (memory_changed);
@@ -181,6 +181,9 @@ extern observable<struct inferior */* inf */> inferior_added;
process. */
extern observable<struct inferior */* inf */> inferior_appeared;
+/* Inferior INF is about to be detached. */
+extern observable<struct inferior */* inf */> inferior_pre_detach;
+
/* Either the inferior associated with INF has been detached from
the process, or the process has exited. */
extern observable<struct inferior */* inf */> inferior_exit;
@@ -2528,6 +2528,8 @@ target_detach (inferior *inf, int from_tty)
prepare_for_detach ();
+ gdb::observers::inferior_pre_detach.notify (inf);
+
/* Hold a strong reference because detaching may unpush the
target. */
auto proc_target_ref = target_ops_ref::new_reference (inf->process_target ());