1# Copyright 2016-2019 Free Software Foundation, Inc. 2 3# This program is free software; you can redistribute it and/or modify 4# it under the terms of the GNU General Public License as published by 5# the Free Software Foundation; either version 3 of the License, or 6# (at your option) any later version. 7# 8# This program is distributed in the hope that it will be useful, 9# but WITHOUT ANY WARRANTY; without even the implied warranty of 10# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11# GNU General Public License for more details. 12# 13# You should have received a copy of the GNU General Public License 14# along with this program. If not, see <http://www.gnu.org/licenses/>. 15 16# Test that on a separate MI UI (new-ui mi <tty>), the printing of an 17# asynchronous event (e.g. =library-loaded) during the synchronous 18# execution of a command (e.g. -exec-run or -exec-continue) does not 19# prematurely re-enable MI input. After executing synchronous 20# commands, MI should not process further commands until the inferior 21# stops again. See PR gdb/20418. 22 23load_lib mi-support.exp 24 25standard_testfile 26 27if {[build_executable $testfile.exp $testfile ${srcfile} "debug"] == -1} { 28 untested "failed to compile" 29 return -1 30} 31 32# The test driver. SYNC_COMMAND specifies which command is used to 33# synchronously start the program running. 34 35proc do_test {sync_command} { 36 global srcdir subdir binfile srcfile 37 global gdb_spawn_id gdb_main_spawn_id mi_spawn_id inferior_spawn_id 38 global gdb_prompt mi_gdb_prompt 39 40 mi_gdb_exit 41 42 if {[mi_gdb_start "separate-mi-tty"] != 0} { 43 fail "could not start gdb" 44 return 45 } 46 47 mi_delete_breakpoints 48 mi_gdb_reinitialize_dir $srcdir/$subdir 49 mi_gdb_load $binfile 50 51 # Start a synchronous run/continue on the MI UI. 52 set test "send synchronous execution command" 53 if {$sync_command == "run"} { 54 if {[mi_run_cmd] >= 0} { 55 pass $test 56 } else { 57 return 58 } 59 } else { 60 if {[mi_runto main] < 0} { 61 return 62 } 63 if {[mi_send_resuming_command_raw "123-exec-continue" $test] >= 0} { 64 pass $test 65 } else { 66 return 67 } 68 } 69 70 # Send -thread-info immediately after. If everything works 71 # correctly, this is only serviced by GDB when the execution 72 # stops. 73 send_gdb "456-thread-info\n" 74 pass "send -thread-info" 75 76 # Make sure we trigger an asynchronous event (=thread-group-added) 77 # in the separate MI UI. Note the "run" variant usually triggers 78 # =thread-group-started/=thread-created/=library-loaded as well. 79 with_spawn_id $gdb_main_spawn_id { 80 gdb_test "add-inferior" "Added inferior 2" 81 } 82 83 # Interrupt the program. 84 with_spawn_id $gdb_main_spawn_id { 85 set message "interrupt on the CLI" 86 gdb_test_multiple "interrupt" "$message" { 87 -re "$gdb_prompt " { 88 gdb_test_multiple "" "$message" { 89 -re "received signal SIGINT" { 90 pass $message 91 } 92 } 93 } 94 } 95 } 96 97 # On the MI channel, we should see the interrupt output _before_ 98 # the -thread-info output. 99 with_spawn_id $mi_spawn_id { 100 mi_expect_interrupt "got MI interrupt output" 101 } 102 103 # Look for the result of our -thread-info. If input were 104 # re-enabled too soon, the thread would incorrectly show up with 105 # state="running". 106 with_spawn_id $mi_spawn_id { 107 mi_gdb_test "" "456\\^.*state=\"stopped\".*" \ 108 "got -thread-info output and thread is stopped" 109 } 110} 111 112foreach_with_prefix sync-command {"run" "continue"} { 113 do_test ${sync-command} 114} 115