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"""
Test number of threads.
"""
import os, time
import unittest2
import lldb
from lldbtest import *
import lldbutil
class CreateDuringStepTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
@expectedFailureDarwin("llvm.org/pr15824") # thread states not properly maintained
@expectedFailureFreeBSD("llvm.org/pr18190") # thread states not properly maintained
@expectedFailureLinux("llvm.org/pr15824") # thread states not properly maintained
@expectedFailureWindows("llvm.org/pr24668") # Breakpoints not resolved correctly
def test_step_inst(self):
"""Test thread creation during step-inst handling."""
self.build(dictionary=self.getBuildFlags())
self.create_during_step_base("thread step-inst -m all-threads", 'stop reason = instruction step')
@expectedFailureDarwin("llvm.org/pr15824") # thread states not properly maintained
@expectedFailureFreeBSD("llvm.org/pr18190") # thread states not properly maintained
@expectedFailureLinux("llvm.org/pr15824") # thread states not properly maintained
@expectedFailureWindows("llvm.org/pr24668") # Breakpoints not resolved correctly
def test_step_over(self):
"""Test thread creation during step-over handling."""
self.build(dictionary=self.getBuildFlags())
self.create_during_step_base("thread step-over -m all-threads", 'stop reason = step over')
@expectedFailureDarwin("llvm.org/pr15824") # thread states not properly maintained
@expectedFailureFreeBSD("llvm.org/pr18190") # thread states not properly maintained
@expectedFailureLinux("llvm.org/pr15824") # thread states not properly maintained
@expectedFailureWindows("llvm.org/pr24668") # Breakpoints not resolved correctly
def test_step_in(self):
"""Test thread creation during step-in handling."""
self.build(dictionary=self.getBuildFlags())
self.create_during_step_base("thread step-in -m all-threads", 'stop reason = step in')
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# Find the line numbers to break and continue.
self.breakpoint = line_number('main.cpp', '// Set breakpoint here')
self.continuepoint = line_number('main.cpp', '// Continue from here')
def create_during_step_base(self, step_cmd, step_stop_reason):
"""Test thread creation while using step-in."""
exe = os.path.join(os.getcwd(), "a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
# This should create a breakpoint in the stepping thread.
self.bp_num = lldbutil.run_break_set_by_file_and_line (self, "main.cpp", self.breakpoint, num_expected_locations=1)
# The breakpoint list should show 1 location.
self.expect("breakpoint list -f", "Breakpoint location shown correctly",
substrs = ["1: file = 'main.cpp', line = %d, locations = 1" % self.breakpoint])
# Run the program.
self.runCmd("run", RUN_SUCCEEDED)
# The stop reason of the thread should be breakpoint.
self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
substrs = ['stopped',
'stop reason = breakpoint'])
# Get the target process
target = self.dbg.GetSelectedTarget()
process = target.GetProcess()
# Get the number of threads
num_threads = process.GetNumThreads()
# Make sure we see only two threads
self.assertTrue(num_threads == 2, 'Number of expected threads and actual threads do not match.')
# Get the thread objects
thread1 = process.GetThreadAtIndex(0)
thread2 = process.GetThreadAtIndex(1)
# Make sure both threads are stopped
self.assertTrue(thread1.IsStopped(), "Thread 1 didn't stop during breakpoint")
self.assertTrue(thread2.IsStopped(), "Thread 2 didn't stop during breakpoint")
# Find the thread that is stopped at the breakpoint
stepping_thread = None
for thread in process:
expected_bp_desc = "breakpoint %s." % self.bp_num
if expected_bp_desc in thread.GetStopDescription(100):
stepping_thread = thread
break
self.assertTrue(stepping_thread != None, "unable to find thread stopped at %s" % expected_bp_desc)
current_line = self.breakpoint
# Keep stepping until we've reached our designated continue point
while current_line != self.continuepoint:
if stepping_thread != process.GetSelectedThread():
process.SetSelectedThread(stepping_thread)
self.runCmd(step_cmd)
frame = stepping_thread.GetFrameAtIndex(0)
current_line = frame.GetLineEntry().GetLine()
# Make sure we're still where we thought we were
self.assertTrue(current_line >= self.breakpoint, "Stepped to unexpected line, " + str(current_line))
self.assertTrue(current_line <= self.continuepoint, "Stepped to unexpected line, " + str(current_line))
# Update the number of threads
num_threads = process.GetNumThreads()
# Check to see that we increased the number of threads as expected
self.assertTrue(num_threads == 3, 'Number of expected threads and actual threads do not match after thread exit.')
self.expect("thread list", 'Process state is stopped due to step',
substrs = ['stopped',
step_stop_reason])
# Run to completion
self.runCmd("process continue")
# At this point, the inferior process should have exited.
self.assertTrue(process.GetState() == lldb.eStateExited, PROCESS_EXITED)
if __name__ == '__main__':
import atexit
lldb.SBDebugger.Initialize()
atexit.register(lambda: lldb.SBDebugger.Terminate())
unittest2.main()
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