gdb/testsuite/gdb.threads/clone-attach-detach.exp

   1 # This testcase is part of GDB, the GNU debugger.
   2
   3 # Copyright 2016-2024 Free Software Foundation, Inc.
   4
   5 # This program is free software; you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 # Test attach / detach from a process that uses raw clone.  We use raw
  19 # clone as proxy for when libthread_db is not available.
  20
  21 # This only works on targets with the Linux kernel.
  22 if ![istarget *-*-linux*] {
  23     return
  24 }
  25
  26 require can_spawn_for_attach
  27
  28 standard_testfile
  29
  30 if [prepare_for_testing "failed to prepare" $testfile $srcfile {debug}] {
  31     return -1
  32 }
  33
  34 set test_spawn_id [spawn_wait_for_attach $binfile]
  35 set testpid [spawn_id_get_pid $test_spawn_id]
  36
  37 # Native/gdbserver.
  38 set thread_re "(LWP $decimal|Thread )"
  39
  40 # Try attach / detach a few times, in case GDB ends up with stale
  41 # state after detaching.
  42
  43 set attempts 3
  44 for {set attempt 1} {$attempt <= $attempts} {incr attempt} {
  45     with_test_prefix "fg attach $attempt" {
  46
  47         gdb_test "attach $testpid" \
  48             "Attaching to program.*process $testpid.*" \
  49             "attach"
  50
  51         gdb_test "info threads" \
  52             "1.*${thread_re}.*\r\n.*2.*${thread_re}.*" \
  53             "info threads shows two LWPs"
  54
  55         gdb_test "detach" "Detaching from .*, process $testpid\r\n\\\[Inferior $decimal \\(.*\\) detached\\\]"
  56     }
  57 }
  58
  59 # Same, but use async/background attach.
  60
  61 # If debugging with target remote, check whether the all-stop variant
  62 # of the RSP is being used.  If so, we can't run the background tests.
  63 if {[target_info exists gdb_protocol]
  64     && ([target_info gdb_protocol] == "remote"
  65         || [target_info gdb_protocol] == "extended-remote")} {
  66
  67     if {![is_target_non_stop]} {
  68         unsupported "bg attach: can't issue info threads while target is running"
  69         return 0
  70     }
  71 }
  72
  73 set attempts 3
  74 for {set attempt 1} {$attempt <= $attempts} {incr attempt} {
  75     with_test_prefix "bg attach $attempt" {
  76
  77         gdb_test "attach $testpid &" \
  78             "Attaching to program.*process $testpid.*" \
  79             "attach"
  80
  81         gdb_test "info threads" \
  82             "1.*${thread_re}.*\\(running\\)\r\n.*2.*${thread_re}.*\\(running\\)" \
  83             "info threads shows two LWPs"
  84
  85         gdb_test "detach" "Detaching from .*, process $testpid\r\n\\\[Inferior $decimal \\(.*\\) detached\\\]"
  86     }
  87 }
  88
  89 kill_wait_spawned_process $test_spawn_id