[PATCH v4 44/44] testsuite, intelgt: add a test for interrupting an exited thread

On Intel GPUs we do not get exit events when a thread dispatch ends.  The
gdbserver-intelgt target synthesizes an exit event during single-stepping,
but otherwise just removes threads from the thread list.

Test that we can still interrupt an Intel GPU inferior after all resumed
threads exited.
---
 .../intelgt-interrupt-exited-thread.exp       | 85 +++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 gdb/testsuite/gdb.arch/intelgt-interrupt-exited-thread.exp

diff --git a/gdb/testsuite/gdb.arch/intelgt-interrupt-exited-thread.exp b/gdb/testsuite/gdb.arch/intelgt-interrupt-exited-thread.exp
new file mode 100644
index 00000000000..3730cc8cda7
--- /dev/null
+++ b/gdb/testsuite/gdb.arch/intelgt-interrupt-exited-thread.exp
@@ -0,0 +1,85 @@
+# Copyright 2026 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+# Test scenarios where we try to interrupt threads that exited.
+
+load_lib sycl.exp
+
+standard_testfile sycl-hello.cpp
+
+set sycl_device_list [init_sycl_devices_list]
+if {[llength $sycl_device_list] == 0} {
+    unsupported "target does not support SYCL"
+    return
+}
+
+if {[build_executable "failed to compile $srcfile" "$binfile" "$srcfile" \
+	 {sycl debug}]} {
+    return
+}
+
+foreach device $sycl_device_list {
+    sycl_with_intelgt_lock $device {
+	if {![require_sycl_device "$device" "gpu" "Intel*"]} {
+	    unsupported "test is aimed at Intel GPUs only"
+	    continue
+	}
+
+	clean_restart $testfile
+	if {![sycl_start $device]} {
+	    continue
+	}
+
+	set line [gdb_get_line_number "inside-kernel"]
+	gdb_breakpoint $line
+	gdb_continue_to_breakpoint ".*inside-kernel.*"
+
+	gdb_test_no_output "set scheduler-locking on"
+	gdb_test_multiple "continue" "continue thread" {
+	    -re "Continuing" {
+		pass $gdb_test_name
+	    }
+	}
+
+	after 500 {send_gdb "\003"}
+	gdb_test "" "Thread .* exited.*" "thread exited"
+	gdb_test "thread" ".*exited.*"
+
+	gdb_test_no_output "set scheduler-locking off"
+	gdb_test_no_output "set schedule-multiple off"
+
+	with_test_prefix "thread exited" {
+	    gdb_test_multiple "continue" "continue inferior" {
+		-re "Continuing" {
+		    pass $gdb_test_name
+		}
+	    }
+
+	    after 500 {send_gdb "\003"}
+	    gdb_test "" "No unwaited-for children left." "no resumed"
+	}
+
+	with_test_prefix "no thread" {
+	    gdb_test_multiple "continue" "continue inferior" {
+		-re "Continuing" {
+		    pass $gdb_test_name
+		}
+	    }
+
+	    after 500 {send_gdb "\003"}
+	    gdb_test "" "No unwaited-for children left." "no resumed"
+	}
+    }
+}
-- 
2.43.0

________________________________________
Intel Deutschland GmbH 

Registered Address: Dornacher Strasse 1, 85622 Feldkirchen, Germany 

Tel: +49 (89) 99143-0 

www.intel.de 

Managing Directors: Candice Moore, Jeffrey Schneiderman, Ramachandran Sitaraman

Chairperson of the Supervisory Board: Sonja Pierer

Registered Seat: Munich Commercial Register B: Amtsgericht Munich HRB 186928

This e-mail and any attachments may contain confidential material for
the sole use of the intended recipient(s). Any review or distribution
by others is strictly prohibited. If you are not the intended
recipient, please contact the sender and delete all copies.