1 # Copyright (C) 2017-2024 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 # Please email any bugs, comments, and/or additions to this file to: 17 # bug-gdb (at) gnu.org 18 19 # This file verifies that methods Inferior.thread_from_handle 20 # and InferiorThread.handle work as expected. 21 22 load_lib gdb-python.exp 23 24 require allow_python_tests 25 26 standard_testfile 27 28 if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable debug] != "" } { 29 return -1 30 } 31 32 clean_restart ${binfile} 33 34 runto_main 35 36 gdb_test "break after_mc_barrier" \ 37 "Breakpoint 2 at .*: file .*${srcfile}, line .*" \ 38 "breakpoint on after_mc_barrier" 39 40 gdb_test "break do_something" \ 41 "Breakpoint 3 at .*: file .*${srcfile}, line .*" \ 42 "breakpoint on do_something" 43 44 gdb_test "continue" \ 45 "Breakpoint 2, after_mc_barrier .*" \ 46 "run to after_mc_barrier" 47 48 gdb_test_no_output "del 2" "delete after_mc_barrier breakpoint" 49 50 gdb_test "continue" \ 51 "Breakpoint 3, do_something .*" \ 52 "run to do_something" 53 54 # The test case has been constructed so that the current thread, 55 # indicated by '*' in the "info threads" output, should be stopped in 56 # do_something() with a value of n which is the same as the number 57 # reported in the "Id" column. If it's not, then something went wrong 58 # with the start up sequence which should cause the main thread to be 59 # thread 1, the first child thread to be thread 2, and the second 60 # child thread to be thread 3. 61 # 62 # Note that \1 in the RE below is a backreference to the thread id 63 # reported in the "Id" column. 64 65 gdb_test "info threads" \ 66 [format {.*[\r\n]+\* +([0-9]+) +%s[^\r\n]* do_something \(n=\1\) at.*} $tdlabel_re] 67 68 # Check for expected results when passing a valid thread handle to 69 # thread_from_handle(). 70 71 gdb_test "python print(gdb.selected_inferior().thread_from_handle(gdb.parse_and_eval('thrs\[0\]')).num)" \ 72 "1" "print thread id for thrs\[0\]" 73 74 gdb_test "python print(gdb.selected_inferior().thread_from_handle(gdb.parse_and_eval('thrs\[1\]')).num)" \ 75 "2" "print thread id for thrs\[1\]" 76 77 gdb_test "python print(gdb.selected_inferior().thread_from_handle(gdb.parse_and_eval('thrs\[2\]')).num)" \ 78 "3" "print thread id for thrs\[2\]" 79 80 # Objects which are of the correct size, but which are bogus thread 81 # handles should return None. For the first test (using thrs[3]), we 82 # use 0. For the second (thrs[4]), we use an unlikely bit pattern. 83 84 gdb_test "python print(gdb.selected_inferior().thread_from_handle(gdb.parse_and_eval('thrs\[3\]')))" \ 85 "None" "print thread for bogus handle thrs\[3\]" 86 87 gdb_test "python print(gdb.selected_inferior().thread_from_handle(gdb.parse_and_eval('thrs\[4\]')))" \ 88 "None" "print thread for bogus handle thrs\[4\]" 89 90 # We should see an exception when passing an object of the wrong type. 91 92 gdb_test "python print(gdb.selected_inferior().thread_from_handle(gdb.lookup_symbol('main')))" \ 93 ".*TypeError.*: Argument 'handle' must be a thread handle object.*" \ 94 "TypeError when passing a symbol object to thread_from_handle" 95 96 # We should see an exception when passing too large of an object. 97 98 gdb_test "python print(gdb.selected_inferior().thread_from_handle(gdb.parse_and_eval('thrs')))" \ 99 ".*Thread handle size mismatch.*" \ 100 "Pass overly large object to thread_from_handle" 101 102 # We should see an exception when passing too small of an object. 103 104 gdb_test "python print(gdb.selected_inferior().thread_from_handle(gdb.parse_and_eval('\"S\"')))" \ 105 ".*Thread handle size mismatch.*" \ 106 "Pass too small of an object to thread_from_handle" 107 108 # Test the thread_handle method 109 110 gdb_py_test_silent_cmd "python tp=gdb.lookup_type('pthread_t')" \ 111 "Get pthread_t type" 0 112 gdb_py_test_silent_cmd "python inf=gdb.selected_inferior()" "Get inferior" 0 113 114 foreach thrN {0 1 2} { 115 with_test_prefix "thread $thrN" { 116 117 gdb_py_test_silent_cmd \ 118 "python hand = gdb.parse_and_eval('thrs\[$thrN\]')" \ 119 "fetch thread handle from inferior" \ 120 1 121 122 gdb_py_test_silent_cmd \ 123 "python hand_bytes = inf.thread_from_handle(hand).handle()" \ 124 "fetch thread handle from thread" \ 125 1 126 127 128 # It'd be nice to be able to use this comparison expression: 129 # 130 # hand == hand_bytes 131 # 132 # But this won't work because hand is a gdb.Value and hand_bytes 133 # is a Python bytes object. Therefore, we convert the bytes 134 # object into a gdb.value by calling the two argument form of 135 # its constructor. 136 137 gdb_test "python print(gdb.Value(hand_bytes, tp) == hand)" \ 138 "True" \ 139 "verify that handles are the same" 140 } 141 } 142
Indexes created Fri Jun 05 00:26:10 UTC 2026