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"""
Test SBThread APIs.
"""
import os, time
import unittest2
import lldb
from lldbutil import get_stopped_thread, get_caller_symbol
from lldbtest import *
class ThreadAPITestCase(TestBase):
mydir = os.path.join("python_api", "thread")
@unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
@python_api_test
def test_get_stop_description_with_dsym(self):
"""Test Python SBThread.GetStopDescription() API."""
self.buildDsym()
self.get_stop_description()
@python_api_test
def test_get_stop_description_with_dwarf(self):
"""Test Python SBThread.GetStopDescription() API."""
self.buildDwarf()
self.get_stop_description()
@unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
@python_api_test
def test_step_out_of_malloc_into_function_b_with_dsym(self):
"""Test Python SBThread.StepOut() API to step out of a malloc call where the call site is at function b()."""
# We build a different executable than the default buildDsym() does.
d = {'CXX_SOURCES': 'main2.cpp'}
self.buildDsym(dictionary=d)
self.setTearDownCleanup(dictionary=d)
self.step_out_of_malloc_into_function_b()
@python_api_test
def test_step_out_of_malloc_into_function_b_with_dwarf(self):
"""Test Python SBThread.StepOut() API to step out of a malloc call where the call site is at function b()."""
# We build a different executable than the default buildDwarf() does.
d = {'CXX_SOURCES': 'main2.cpp'}
self.buildDwarf(dictionary=d)
self.setTearDownCleanup(dictionary=d)
self.step_out_of_malloc_into_function_b()
@unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
@python_api_test
def test_step_over_3_times_with_dsym(self):
"""Test Python SBThread.StepOver() API."""
# We build a different executable than the default buildDsym() does.
d = {'CXX_SOURCES': 'main2.cpp'}
self.buildDsym(dictionary=d)
self.setTearDownCleanup(dictionary=d)
self.step_over_3_times()
@python_api_test
def test_step_over_3_times_with_dwarf(self):
"""Test Python SBThread.StepOver() API."""
# We build a different executable than the default buildDwarf() does.
d = {'CXX_SOURCES': 'main2.cpp'}
self.buildDwarf(dictionary=d)
self.setTearDownCleanup(dictionary=d)
self.step_over_3_times()
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# Find the line number to break inside main().
self.line = line_number("main.cpp", "// Set break point at this line and check variable 'my_char'.")
# Find the line numbers within main2.cpp for step_over_3_times() and step_out_of_malloc_into_function_b().
self.line2 = line_number("main2.cpp", "// thread step-out of malloc into function b.")
self.line3 = line_number("main2.cpp", "// we should reach here after 3 step-over's.")
def get_stop_description(self):
"""Test Python SBProcess.ReadMemory() API."""
exe = os.path.join(os.getcwd(), "a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
target = self.dbg.CreateTarget(exe)
self.assertTrue(target.IsValid(), VALID_TARGET)
breakpoint = target.BreakpointCreateByLocation("main.cpp", self.line)
self.assertTrue(breakpoint.IsValid(), VALID_BREAKPOINT)
#self.runCmd("breakpoint list")
# Launch the process, and do not stop at the entry point.
error = lldb.SBError()
self.process = target.Launch (self.dbg.GetListener(), None, None, os.ctermid(), os.ctermid(), os.ctermid(), None, 0, False, error)
thread = get_stopped_thread(self.process, lldb.eStopReasonBreakpoint)
self.assertTrue(thread != None, "There should be a thread stopped due to breakpoint")
#self.runCmd("process status")
# Due to the typemap magic (see lldb.swig), we pass in an (int)length to GetStopDescription
# and expect to get a Python string as the result object!
# The 100 is just an arbitrary number specifying the buffer size.
stop_description = thread.GetStopDescription(100)
self.expect(stop_description, exe=False,
startstr = 'breakpoint')
def step_out_of_malloc_into_function_b(self):
"""Test Python SBThread.StepOut() API to step out of a malloc call where the call site is at function b()."""
exe = os.path.join(os.getcwd(), "a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
target = self.dbg.CreateTarget(exe)
self.assertTrue(target.IsValid(), VALID_TARGET)
breakpoint = target.BreakpointCreateByName('malloc')
self.assertTrue(breakpoint.IsValid(), VALID_BREAKPOINT)
self.runCmd("breakpoint list")
# Launch the process, and do not stop at the entry point.
error = lldb.SBError()
self.process = target.Launch (self.dbg.GetListener(), None, None, os.ctermid(), os.ctermid(), os.ctermid(), None, 0, False, error)
while True:
thread = get_stopped_thread(self.process, lldb.eStopReasonBreakpoint)
self.assertTrue(thread != None, "There should be a thread stopped due to breakpoint")
caller_symbol = get_caller_symbol(thread)
#print "caller symbol of malloc:", caller_symbol
if not caller_symbol:
self.fail("Test failed: could not locate the caller symbol of malloc")
if caller_symbol == "b(int)":
break
#self.runCmd("thread backtrace")
#self.runCmd("process status")
self.process.Continue()
thread.StepOut()
self.runCmd("thread backtrace")
#self.runCmd("process status")
self.assertTrue(thread.GetFrameAtIndex(0).GetLineEntry().GetLine() == self.line2,
"step out of malloc into function b is successful")
def step_over_3_times(self):
"""Test Python SBThread.StepOver() API."""
exe = os.path.join(os.getcwd(), "a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
target = self.dbg.CreateTarget(exe)
self.assertTrue(target.IsValid(), VALID_TARGET)
breakpoint = target.BreakpointCreateByLocation('main2.cpp', self.line2)
self.assertTrue(breakpoint.IsValid(), VALID_BREAKPOINT)
self.runCmd("breakpoint list")
# Launch the process, and do not stop at the entry point.
error = lldb.SBError()
self.process = target.Launch (self.dbg.GetListener(), None, None, os.ctermid(), os.ctermid(), os.ctermid(), None, 0, False, error)
self.assertTrue(self.process.IsValid(), PROCESS_IS_VALID)
# Frame #0 should be on self.line2.
self.assertTrue(self.process.GetState() == lldb.eStateStopped)
thread = get_stopped_thread(self.process, lldb.eStopReasonBreakpoint)
self.assertTrue(thread != None, "There should be a thread stopped due to breakpoint condition")
self.runCmd("thread backtrace")
frame0 = thread.GetFrameAtIndex(0)
lineEntry = frame0.GetLineEntry()
self.assertTrue(lineEntry.GetLine() == self.line2)
thread.StepOver()
thread.StepOver()
thread.StepOver()
self.runCmd("thread backtrace")
# Verify that we are stopped at the correct source line number in main2.cpp.
frame0 = thread.GetFrameAtIndex(0)
lineEntry = frame0.GetLineEntry()
self.assertTrue(thread.GetStopReason() == lldb.eStopReasonPlanComplete)
self.assertTrue(lineEntry.GetLine() == self.line3)
if __name__ == '__main__':
import atexit
lldb.SBDebugger.Initialize()
atexit.register(lambda: lldb.SBDebugger.Terminate())
unittest2.main()
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