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"""
Test that lldb stop-hook works for multiple threads.
"""
from __future__ import print_function
import os, time
import lldb
from lldbsuite.test import configuration
from lldbsuite.test.lldbtest import *
class StopHookForMultipleThreadsTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# Our simple source filename.
self.source = 'main.cpp'
# Find the line number to break inside main().
self.first_stop = line_number(self.source, '// Set break point at this line, and add a stop-hook.')
self.thread_function = line_number(self.source, '// Break here to test that the stop-hook mechanism works for multiple threads.')
# Build dictionary to have unique executable names for each test method.
self.exe_name = self.testMethodName
self.d = {'CXX_SOURCES': self.source, 'EXE': self.exe_name}
@expectedFlakeyFreeBSD("llvm.org/pr15037")
@expectedFlakeyLinux("llvm.org/pr15037") # stop hooks sometimes fail to fire on Linux
@expectedFailureHostWindows("llvm.org/pr22274: need a pexpect replacement for windows")
def test_stop_hook_multiple_threads(self):
"""Test that lldb stop-hook works for multiple threads."""
self.build(dictionary=self.d)
self.setTearDownCleanup(dictionary=self.d)
import pexpect
exe = os.path.join(os.getcwd(), self.exe_name)
prompt = "(lldb) "
# So that the child gets torn down after the test.
self.child = pexpect.spawn('%s %s' % (lldbtest_config.lldbExec, self.lldbOption))
child = self.child
# Turn on logging for what the child sends back.
if self.TraceOn():
child.logfile_read = sys.stdout
if lldb.remote_platform:
child.expect_exact(prompt)
child.sendline('platform select %s' % lldb.remote_platform.GetName())
child.expect_exact(prompt)
child.sendline('platform connect %s' % configuration.lldb_platform_url)
child.expect_exact(prompt)
child.sendline('platform settings -w %s' % configuration.lldb_platform_working_dir)
child.expect_exact(prompt)
child.sendline('target create %s' % exe)
# Set the breakpoint, followed by the target stop-hook commands.
child.expect_exact(prompt)
child.sendline('breakpoint set -f main.cpp -l %d' % self.first_stop)
child.expect_exact(prompt)
child.sendline('breakpoint set -f main.cpp -l %d' % self.thread_function)
child.expect_exact(prompt)
# Now run the program, expect to stop at the first breakpoint which is within the stop-hook range.
child.sendline('run')
child.expect_exact("Process") # 'Process 2415 launched', 'Process 2415 stopped'
child.expect_exact(prompt)
child.sendline('target stop-hook add -o "frame variable --show-globals g_val"')
child.expect_exact("Stop hook") # 'Stop hook #1 added.'
child.expect_exact(prompt)
# Continue and expect to find the output emitted by the firing of our stop hook.
child.sendline('continue')
child.expect_exact('(uint32_t) ::g_val = ')
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