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143 lines
5.1 KiB
Plaintext
143 lines
5.1 KiB
Plaintext
# Copyright (C) 2017-2020 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Please email any bugs, comments, and/or additions to this file to:
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# bug-gdb@gnu.org
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# This file verifies that methods Inferior.thread_from_handle
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# and InferiorThread.handle work as expected.
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load_lib gdb-python.exp
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standard_testfile
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if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable debug] != "" } {
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return -1
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}
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clean_restart ${binfile}
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# Skip all tests if Python scripting is not enabled.
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if { [skip_python_tests] } { continue }
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runto_main
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gdb_test "break after_mc_barrier" \
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"Breakpoint 2 at .*: file .*${srcfile}, line .*" \
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"breakpoint on after_mc_barrier"
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gdb_test "break do_something" \
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"Breakpoint 3 at .*: file .*${srcfile}, line .*" \
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"breakpoint on do_something"
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gdb_test "continue" \
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"Breakpoint 2, after_mc_barrier .*" \
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"run to after_mc_barrier"
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gdb_test_no_output "del 2" "delete after_mc_barrier breakpoint"
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gdb_test "continue" \
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"Breakpoint 3, do_something .*" \
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"run to do_something"
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# The test case has been constructed so that the current thread,
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# indicated by '*' in the "info threads" output, should be stopped in
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# do_something() with a value of n which is the same as the number
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# reported in the "Id" column. If it's not, then something went wrong
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# with the start up sequence which should cause the main thread to be
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# thread 1, the first child thread to be thread 2, and the second
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# child thread to be thread 3.
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#
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# Note that \1 in the RE below is a backreference to the thread id
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# reported in the "Id" column.
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gdb_test "info threads" \
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{.*[\r\n]+\* +([0-9]+) +Thread[^\r\n]* do_something \(n=\1\) at.*}
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# Check for expected results when passing a valid thread handle to
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# thread_from_handle().
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gdb_test "python print(gdb.selected_inferior().thread_from_handle(gdb.parse_and_eval('thrs\[0\]')).num)" \
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"1" "print thread id for thrs\[0\]"
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gdb_test "python print(gdb.selected_inferior().thread_from_handle(gdb.parse_and_eval('thrs\[1\]')).num)" \
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"2" "print thread id for thrs\[1\]"
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gdb_test "python print(gdb.selected_inferior().thread_from_handle(gdb.parse_and_eval('thrs\[2\]')).num)" \
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"3" "print thread id for thrs\[2\]"
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# Objects which are of the correct size, but which are bogus thread
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# handles should return None. For the first test (using thrs[3]), we
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# use 0. For the second (thrs[4]), we use an unlikely bit pattern.
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gdb_test "python print(gdb.selected_inferior().thread_from_handle(gdb.parse_and_eval('thrs\[3\]')))" \
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"None" "print thread for bogus handle thrs\[3\]"
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gdb_test "python print(gdb.selected_inferior().thread_from_handle(gdb.parse_and_eval('thrs\[4\]')))" \
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"None" "print thread for bogus handle thrs\[4\]"
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# We should see an exception when passing an object of the wrong type.
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gdb_test "python print(gdb.selected_inferior().thread_from_handle(gdb.lookup_symbol('main')))" \
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".*TypeError: Argument 'handle' must be a thread handle object.*" \
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"TypeError when passing a symbol object to thread_from_handle"
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# We should see an exception when passing too large of an object.
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gdb_test "python print(gdb.selected_inferior().thread_from_handle(gdb.parse_and_eval('thrs')))" \
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".*Thread handle size mismatch.*" \
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"Pass overly large object to thread_from_handle"
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# We should see an exception when passing too small of an object.
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gdb_test "python print(gdb.selected_inferior().thread_from_handle(gdb.parse_and_eval('\"S\"')))" \
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".*Thread handle size mismatch.*" \
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"Pass too small of an object to thread_from_handle"
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# Test the thread_handle method
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gdb_py_test_silent_cmd "python tp=gdb.lookup_type('pthread_t')" \
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"Get pthread_t type" 0
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gdb_py_test_silent_cmd "python inf=gdb.selected_inferior()" "Get inferior" 0
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foreach thrN {0 1 2} {
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with_test_prefix "thread $thrN" {
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gdb_py_test_silent_cmd \
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"python hand = gdb.parse_and_eval('thrs\[$thrN\]')" \
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"fetch thread handle from inferior" \
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1
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gdb_py_test_silent_cmd \
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"python hand_bytes = inf.thread_from_handle(hand).handle()" \
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"fetch thread handle from thread" \
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1
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# It'd be nice to be able to use this comparison expression:
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#
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# hand == hand_bytes
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#
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# But this won't work because hand is a gdb.Value and hand_bytes
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# is a Python bytes object. Therefore, we convert the bytes
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# object into a gdb.value by calling the two argument form of
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# its constructor.
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gdb_test "python print(gdb.Value(hand_bytes, tp) == hand)" \
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"True" \
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"verify that handles are the same"
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}
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}
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