TestValueAPILinkedList.py [plain text]
"""
Test SBValue API linked_list_iter which treats the SBValue as a linked list and
supports iteration till the end of list is reached.
"""
import os, time
import re
import unittest2
import lldb, lldbutil
from lldbtest import *
class ValueAsLinkedListTestCase(TestBase):
mydir = os.path.join("python_api", "value", "linked_list")
@unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
@python_api_test
@dsym_test
def test_with_dsym(self):
"""Exercise SBValue API linked_list_iter."""
d = {'EXE': self.exe_name}
self.buildDsym(dictionary=d)
self.setTearDownCleanup(dictionary=d)
self.linked_list_api(self.exe_name)
@python_api_test
@dwarf_test
def test_with_dwarf(self):
"""Exercise SBValue API linked_list_iter."""
d = {'EXE': self.exe_name}
self.buildDwarf(dictionary=d)
self.setTearDownCleanup(dictionary=d)
self.linked_list_api(self.exe_name)
def setUp(self):
TestBase.setUp(self)
self.exe_name = self.testMethodName
self.line = line_number('main.cpp', '// Break at this line')
def linked_list_api(self, exe_name):
"""Exercise SBValue API linked_list-iter."""
exe = os.path.join(os.getcwd(), exe_name)
target = self.dbg.CreateTarget(exe)
self.assertTrue(target, VALID_TARGET)
breakpoint = target.BreakpointCreateByLocation('main.cpp', self.line)
self.assertTrue(breakpoint, VALID_BREAKPOINT)
process = target.LaunchSimple(None, None, os.getcwd())
self.assertTrue(process, PROCESS_IS_VALID)
self.assertTrue(process.GetState() == lldb.eStateStopped)
thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint)
self.assertTrue(thread != None, "There should be a thread stopped due to breakpoint condition")
frame0 = thread.GetFrameAtIndex(0)
task_head = frame0.FindVariable('task_head')
self.assertTrue(task_head, VALID_VARIABLE)
self.DebugSBValue(task_head)
visitedIDs = [1, 2, 4, 5]
list = []
cvf = lldbutil.ChildVisitingFormatter(indent_child=2)
for t in task_head.linked_list_iter('next'):
self.assertTrue(t, VALID_VARIABLE)
self.assertTrue(t.TypeIsPointerType())
if self.TraceOn():
print cvf.format(t)
list.append(int(t.GetChildMemberWithName("id").GetValue()))
if self.TraceOn():
print "visited IDs:", list
self.assertTrue(visitedIDs == list)
def eol(val):
"""Test function to determine end of list."""
if not val or int(val.GetValue(), 16) == 0:
return True
if int(val.GetChildMemberWithName("id").GetValue(), 0) <= 0:
return True
return False
list = []
for t in task_head.linked_list_iter('next', eol):
self.assertTrue(t, VALID_VARIABLE)
self.assertTrue(t.TypeIsPointerType())
if self.TraceOn():
print cvf.format(t)
list.append(int(t.GetChildMemberWithName("id").GetValue()))
if self.TraceOn():
print "visited IDs:", list
self.assertTrue(visitedIDs == list)
empty_task_head = frame0.FindVariable('empty_task_head')
self.assertTrue(empty_task_head, VALID_VARIABLE)
self.DebugSBValue(empty_task_head)
list = []
for t in empty_task_head.linked_list_iter('next', eol):
if self.TraceOn():
print cvf.format(t)
list.append(int(t.GetChildMemberWithName("id").GetValue()))
self.assertTrue(len(list) == 0)
task_evil = frame0.FindVariable('task_evil')
self.assertTrue(task_evil, VALID_VARIABLE)
self.DebugSBValue(task_evil)
list = []
for t in task_evil.linked_list_iter('next'):
if self.TraceOn():
print cvf.format(t)
list.append(int(t.GetChildMemberWithName("id").GetValue()))
self.assertTrue(len(list) == 3)
if __name__ == '__main__':
import atexit
lldb.SBDebugger.Initialize()
atexit.register(lambda: lldb.SBDebugger.Terminate())
unittest2.main()