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# Tests for the MutexPrinter class.
#
# Copyright (C) 2016-2021 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
#
# The GNU C Library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# The GNU C Library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with the GNU C Library; if not, see
# <https://www.gnu.org/licenses/>.
import sys
from test_printers_common import *
test_source = sys.argv[1]
test_bin = sys.argv[2]
printer_files = sys.argv[3:]
printer_names = ['global glibc-pthread-locks']
try:
init_test(test_bin, printer_files, printer_names)
go_to_main()
var = 'mutex'
to_string = 'pthread_mutex_t'
break_at(test_source, 'Test status (destroyed)')
continue_cmd() # Go to test_status_destroyed
test_printer(var, to_string, {'Status': 'Destroyed'})
break_at(test_source, 'Test status (non-robust)')
continue_cmd() # Go to test_status_no_robust
test_printer(var, to_string, {'Status': 'Not acquired'})
next_cmd()
thread_id = get_current_thread_lwpid()
# Owner ID might be reported either as the thread ID or as "Unknown"
# (if e.g. lock elision is enabled).
test_printer(var, to_string,
{'Status': 'Acquired, possibly with no waiters',
'Owner ID': r'({0}|Unknown)'.format(thread_id)})
break_at(test_source, 'Test status (robust)')
continue_cmd() # Go to test_status_robust
test_printer(var, to_string, {'Status': 'Not acquired'})
# We'll now test the robust mutex locking states. We'll create a new
# thread that will lock a robust mutex and exit without unlocking it.
break_at(test_source, 'Create')
continue_cmd() # Go to test_locking_state_robust
# Set a breakpoint for the new thread to hit.
break_at(test_source, 'Thread function')
continue_cmd()
# By now the new thread is created and has hit its breakpoint.
set_scheduler_locking(True)
parent = 1
child = 2
select_thread(child)
child_id = get_current_thread_lwpid()
# We've got the new thread's ID.
select_thread(parent)
# Make the new thread finish its function while we wait.
continue_cmd(thread=child)
# The new thread should be dead by now.
break_at(test_source, 'Test locking (robust)')
continue_cmd()
test_printer(var, to_string, {'Owner ID': r'{0} \(dead\)'.format(child_id)})
# Try to lock and unlock the mutex.
next_cmd()
test_printer(var, to_string, {'Owner ID': thread_id,
'State protected by this mutex': 'Inconsistent'})
next_cmd()
test_printer(var, to_string, {'Status': 'Not acquired',
'State protected by this mutex': 'Not recoverable'})
set_scheduler_locking(False)
break_at(test_source, 'Test recursive locks')
continue_cmd() # Go to test_recursive_locks
test_printer(var, to_string, {'Times acquired by the owner': '2'})
next_cmd()
test_printer(var, to_string, {'Times acquired by the owner': '3'})
continue_cmd() # Exit
except (NoLineError, pexpect.TIMEOUT) as exception:
print('Error: {0}'.format(exception))
result = FAIL
else:
print('Test succeeded.')
result = PASS
exit(result)
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