TheRock/debug-tools/rocgdb/source/gdb/testsuite/gdb.rocm/multi-inferior-gpu.exp

# Copyright 2023-2024 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/>.

# This test checks that GDB can debug multiple inferior which uses all
# the ROCm runtime.

load_lib rocm.exp

standard_testfile .cpp

require allow_hip_tests
require hip_devices_support_debug_multi_process
require allow_fork_tests

if {[build_executable "failed to prepare" $testfile $srcfile {debug hip}]} {
    return
}

proc do_test {} {
    clean_restart $::binfile
    gdb_test_no_output "set non-stop on"
    gdb_test_no_output "set detach-on-fork off"
    gdb_test_no_output "set follow-fork parent"

    with_rocm_gpu_lock {
	gdb_breakpoint [gdb_get_line_number "Break here"]
	gdb_breakpoint kern allow-pending
	gdb_breakpoint [gdb_get_line_number "Last break here"]

	# Run until we reach the first breakpoint where we can figure
	# out how many children will be spawned.
	gdb_test "run" "hit Breakpoint.*"

	set num_children [get_integer_valueof "num_devices" 0]
	set bp_to_see $num_children
	set stopped_gpu_threads [list]

	gdb_test_multiple "continue -a &" "continue to gpu breakpoints" {
	    -re "Continuing\.\r\n$::gdb_prompt " {
		pass $gdb_test_name
	    }
	}

	gdb_test_multiple "" "wait for gpu stops" {
	    -re "Thread ($::decimal\.$::decimal)\[^\r\n\]* hit Breakpoint\[^\r\n\]*, kern \(\)\[^\r\n\]*\r\n" {
		lappend stopped_gpu_threads $expect_out(1,string)
		incr bp_to_see -1
		if {$bp_to_see != 0} {
		    exp_continue
		} else {
		    pass $gdb_test_name
		}
	    }
	}

	# Continue all the GPU kernels so all the children processes can reach exit.
	foreach thread $stopped_gpu_threads {
	    set infnumber [lindex [split $thread .] 0]
	    gdb_test "thread $thread" "Switching to thread.*"
	    gdb_test_multiple "continue" "continue inferior $infnumber" {
		-re "\\\[Inferior $infnumber \[^\n\r\]* exited normally\\]\r\n$::gdb_prompt " {
		    pass $gdb_test_name
		}
	    }
	}

	gdb_test_multiple "" "reach breakpoint in main" {
	    -re "hit Breakpoint.*parent" {
		pass $gdb_test_name
	    }
	}
	# Select main inferior
	gdb_test "inferior 1" "Switching to inferior 1.*"
	gdb_continue_to_end "" "continue -a" 1
    }
}

do_test