1# Copyright (C) 2017-2020 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@gnu.org 18 19# This file verifies that methods Inferior.thread_from_handle 20# and InferiorThread.handle work as expected. 21 22load_lib gdb-python.exp 23 24standard_testfile 25 26if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable debug] != "" } { 27 return -1 28} 29 30clean_restart ${binfile} 31 32# Skip all tests if Python scripting is not enabled. 33if { [skip_python_tests] } { continue } 34 35runto_main 36 37gdb_test "break after_mc_barrier" \ 38 "Breakpoint 2 at .*: file .*${srcfile}, line .*" \ 39 "breakpoint on after_mc_barrier" 40 41gdb_test "break do_something" \ 42 "Breakpoint 3 at .*: file .*${srcfile}, line .*" \ 43 "breakpoint on do_something" 44 45gdb_test "continue" \ 46 "Breakpoint 2, after_mc_barrier .*" \ 47 "run to after_mc_barrier" 48 49gdb_test_no_output "del 2" "delete after_mc_barrier breakpoint" 50 51gdb_test "continue" \ 52 "Breakpoint 3, do_something .*" \ 53 "run to do_something" 54 55# The test case has been constructed so that the current thread, 56# indicated by '*' in the "info threads" output, should be stopped in 57# do_something() with a value of n which is the same as the number 58# reported in the "Id" column. If it's not, then something went wrong 59# with the start up sequence which should cause the main thread to be 60# thread 1, the first child thread to be thread 2, and the second 61# child thread to be thread 3. 62# 63# Note that \1 in the RE below is a backreference to the thread id 64# reported in the "Id" column. 65 66gdb_test "info threads" \ 67 {.*[\r\n]+\* +([0-9]+) +Thread[^\r\n]* do_something \(n=\1\) at.*} 68 69# Check for expected results when passing a valid thread handle to 70# thread_from_handle(). 71 72gdb_test "python print(gdb.selected_inferior().thread_from_handle(gdb.parse_and_eval('thrs\[0\]')).num)" \ 73 "1" "print thread id for thrs\[0\]" 74 75gdb_test "python print(gdb.selected_inferior().thread_from_handle(gdb.parse_and_eval('thrs\[1\]')).num)" \ 76 "2" "print thread id for thrs\[1\]" 77 78gdb_test "python print(gdb.selected_inferior().thread_from_handle(gdb.parse_and_eval('thrs\[2\]')).num)" \ 79 "3" "print thread id for thrs\[2\]" 80 81# Objects which are of the correct size, but which are bogus thread 82# handles should return None. For the first test (using thrs[3]), we 83# use 0. For the second (thrs[4]), we use an unlikely bit pattern. 84 85gdb_test "python print(gdb.selected_inferior().thread_from_handle(gdb.parse_and_eval('thrs\[3\]')))" \ 86 "None" "print thread for bogus handle thrs\[3\]" 87 88gdb_test "python print(gdb.selected_inferior().thread_from_handle(gdb.parse_and_eval('thrs\[4\]')))" \ 89 "None" "print thread for bogus handle thrs\[4\]" 90 91# We should see an exception when passing an object of the wrong type. 92 93gdb_test "python print(gdb.selected_inferior().thread_from_handle(gdb.lookup_symbol('main')))" \ 94 ".*TypeError: Argument 'handle' must be a thread handle object.*" \ 95 "TypeError when passing a symbol object to thread_from_handle" 96 97# We should see an exception when passing too large of an object. 98 99gdb_test "python print(gdb.selected_inferior().thread_from_handle(gdb.parse_and_eval('thrs')))" \ 100 ".*Thread handle size mismatch.*" \ 101 "Pass overly large object to thread_from_handle" 102 103# We should see an exception when passing too small of an object. 104 105gdb_test "python print(gdb.selected_inferior().thread_from_handle(gdb.parse_and_eval('\"S\"')))" \ 106 ".*Thread handle size mismatch.*" \ 107 "Pass too small of an object to thread_from_handle" 108 109# Test the thread_handle method 110 111gdb_py_test_silent_cmd "python tp=gdb.lookup_type('pthread_t')" \ 112 "Get pthread_t type" 0 113gdb_py_test_silent_cmd "python inf=gdb.selected_inferior()" "Get inferior" 0 114 115foreach thrN {0 1 2} { 116 with_test_prefix "thread $thrN" { 117 118 gdb_py_test_silent_cmd \ 119 "python hand = gdb.parse_and_eval('thrs\[$thrN\]')" \ 120 "fetch thread handle from inferior" \ 121 1 122 123 gdb_py_test_silent_cmd \ 124 "python hand_bytes = inf.thread_from_handle(hand).handle()" \ 125 "fetch thread handle from thread" \ 126 1 127 128 129 # It'd be nice to be able to use this comparison expression: 130 # 131 # hand == hand_bytes 132 # 133 # But this won't work because hand is a gdb.Value and hand_bytes 134 # is a Python bytes object. Therefore, we convert the bytes 135 # object into a gdb.value by calling the two argument form of 136 # its constructor. 137 138 gdb_test "python print(gdb.Value(hand_bytes, tp) == hand)" \ 139 "True" \ 140 "verify that handles are the same" 141 } 142} 143