mirror of
https://github.com/Gericom/teak-llvm.git
synced 2025-06-22 21:15:40 -04:00
95c453a221
For convenience, we had added the folder that dotest.py was in to sys.path, so that we could easily write things like `import lldbutil` from anywhere and any test. This introduces a subtle problem when using Python's package system, because when unittest2 imports a particular test suite, the test suite is detached from the package. Thus, writing "import lldbutil" from dotest imports it as part of the package, and writing the same line from a test does a fresh import since the importing module was not part of the same package. The real way to fix this is to use absolute imports everywhere. Instead of writing "import lldbutil", we need to write "import lldbsuite.test.util". This patch fixes up that and all other similar cases, and additionally removes the script directory from sys.path to ensure that this can't happen again. llvm-svn: 251886
140 lines
6.3 KiB
Python
140 lines
6.3 KiB
Python
"""
|
|
Test calling a function that hits a signal set to auto-restart, make sure the call completes.
|
|
"""
|
|
|
|
from __future__ import print_function
|
|
|
|
import use_lldb_suite
|
|
|
|
import lldb
|
|
import lldbsuite.test.lldbutil as lldbutil
|
|
from lldbsuite.test.lldbtest import *
|
|
|
|
class ExprCommandThatRestartsTestCase(TestBase):
|
|
|
|
mydir = TestBase.compute_mydir(__file__)
|
|
|
|
def setUp(self):
|
|
# Call super's setUp().
|
|
TestBase.setUp(self)
|
|
|
|
self.main_source = "lotta-signals.c"
|
|
self.main_source_spec = lldb.SBFileSpec (self.main_source)
|
|
|
|
@skipIfFreeBSD # llvm.org/pr19246: intermittent failure
|
|
@skipIfDarwin # llvm.org/pr19246: intermittent failure
|
|
@skipIfWindows # Test relies on signals, unsupported on Windows
|
|
def test(self):
|
|
"""Test calling function that hits a signal and restarts."""
|
|
self.build()
|
|
self.call_function()
|
|
|
|
def check_after_call (self, num_sigchld):
|
|
after_call = self.sigchld_no.GetValueAsSigned(-1)
|
|
self.assertTrue (after_call - self.start_sigchld_no == num_sigchld, "Really got %d SIGCHLD signals through the call."%(num_sigchld))
|
|
self.start_sigchld_no = after_call
|
|
|
|
# Check that we are back where we were before:
|
|
frame = self.thread.GetFrameAtIndex(0)
|
|
self.assertTrue (self.orig_frame_pc == frame.GetPC(), "Restored the zeroth frame correctly")
|
|
|
|
def call_function(self):
|
|
exe_name = "a.out"
|
|
exe = os.path.join(os.getcwd(), exe_name)
|
|
|
|
target = self.dbg.CreateTarget(exe)
|
|
self.assertTrue(target, VALID_TARGET)
|
|
empty = lldb.SBFileSpec()
|
|
breakpoint = target.BreakpointCreateBySourceRegex('Stop here in main.',self.main_source_spec)
|
|
self.assertTrue(breakpoint.GetNumLocations() > 0, VALID_BREAKPOINT)
|
|
|
|
# Launch the process, and do not stop at the entry point.
|
|
process = target.LaunchSimple (None, None, self.get_process_working_directory())
|
|
|
|
self.assertTrue(process, PROCESS_IS_VALID)
|
|
|
|
# Frame #0 should be at our breakpoint.
|
|
threads = lldbutil.get_threads_stopped_at_breakpoint (process, breakpoint)
|
|
|
|
self.assertTrue(len(threads) == 1)
|
|
self.thread = threads[0]
|
|
|
|
# Make sure the SIGCHLD behavior is pass/no-stop/no-notify:
|
|
return_obj = lldb.SBCommandReturnObject()
|
|
self.dbg.GetCommandInterpreter().HandleCommand("process handle SIGCHLD -s 0 -p 1 -n 0", return_obj)
|
|
self.assertTrue (return_obj.Succeeded() == True, "Set SIGCHLD to pass, no-stop")
|
|
|
|
# The sigchld_no variable should be 0 at this point.
|
|
self.sigchld_no = target.FindFirstGlobalVariable("sigchld_no")
|
|
self.assertTrue (self.sigchld_no.IsValid(), "Got a value for sigchld_no")
|
|
|
|
self.start_sigchld_no = self.sigchld_no.GetValueAsSigned (-1)
|
|
self.assertTrue (self.start_sigchld_no != -1, "Got an actual value for sigchld_no")
|
|
|
|
options = lldb.SBExpressionOptions()
|
|
# processing 30 signals takes a while, increase the expression timeout a bit
|
|
options.SetTimeoutInMicroSeconds(3000000) # 3s
|
|
options.SetUnwindOnError(True)
|
|
|
|
frame = self.thread.GetFrameAtIndex(0)
|
|
# Store away the PC to check that the functions unwind to the right place after calls
|
|
self.orig_frame_pc = frame.GetPC()
|
|
|
|
num_sigchld = 30
|
|
value = frame.EvaluateExpression ("call_me (%d)"%(num_sigchld), options)
|
|
self.assertTrue (value.IsValid())
|
|
self.assertTrue (value.GetError().Success() == True)
|
|
self.assertTrue (value.GetValueAsSigned(-1) == num_sigchld)
|
|
|
|
self.check_after_call(num_sigchld)
|
|
|
|
# Okay, now try with a breakpoint in the called code in the case where
|
|
# we are ignoring breakpoint hits.
|
|
handler_bkpt = target.BreakpointCreateBySourceRegex("Got sigchld %d.", self.main_source_spec)
|
|
self.assertTrue (handler_bkpt.GetNumLocations() > 0)
|
|
options.SetIgnoreBreakpoints(True)
|
|
options.SetUnwindOnError(True)
|
|
|
|
value = frame.EvaluateExpression("call_me (%d)"%(num_sigchld), options)
|
|
|
|
self.assertTrue (value.IsValid() and value.GetError().Success() == True)
|
|
self.assertTrue (value.GetValueAsSigned(-1) == num_sigchld)
|
|
self.check_after_call(num_sigchld)
|
|
|
|
# Now set the signal to print but not stop and make sure that calling still works:
|
|
self.dbg.GetCommandInterpreter().HandleCommand("process handle SIGCHLD -s 0 -p 1 -n 1", return_obj)
|
|
self.assertTrue (return_obj.Succeeded() == True, "Set SIGCHLD to pass, no-stop, notify")
|
|
|
|
value = frame.EvaluateExpression("call_me (%d)"%(num_sigchld), options)
|
|
|
|
self.assertTrue (value.IsValid() and value.GetError().Success() == True)
|
|
self.assertTrue (value.GetValueAsSigned(-1) == num_sigchld)
|
|
self.check_after_call(num_sigchld)
|
|
|
|
# Now set this unwind on error to false, and make sure that we still complete the call:
|
|
options.SetUnwindOnError(False)
|
|
value = frame.EvaluateExpression("call_me (%d)"%(num_sigchld), options)
|
|
|
|
self.assertTrue (value.IsValid() and value.GetError().Success() == True)
|
|
self.assertTrue (value.GetValueAsSigned(-1) == num_sigchld)
|
|
self.check_after_call(num_sigchld)
|
|
|
|
# Okay, now set UnwindOnError to true, and then make the signal behavior to stop
|
|
# and see that now we do stop at the signal point:
|
|
|
|
self.dbg.GetCommandInterpreter().HandleCommand("process handle SIGCHLD -s 1 -p 1 -n 1", return_obj)
|
|
self.assertTrue (return_obj.Succeeded() == True, "Set SIGCHLD to pass, stop, notify")
|
|
|
|
value = frame.EvaluateExpression("call_me (%d)"%(num_sigchld), options)
|
|
self.assertTrue (value.IsValid() and value.GetError().Success() == False)
|
|
|
|
# Set signal handling back to no-stop, and continue and we should end up back in out starting frame:
|
|
self.dbg.GetCommandInterpreter().HandleCommand("process handle SIGCHLD -s 0 -p 1 -n 1", return_obj)
|
|
self.assertTrue (return_obj.Succeeded() == True, "Set SIGCHLD to pass, no-stop, notify")
|
|
|
|
error = process.Continue()
|
|
self.assertTrue (error.Success(), "Continuing after stopping for signal succeeds.")
|
|
|
|
frame = self.thread.GetFrameAtIndex(0)
|
|
self.assertTrue (frame.GetPC() == self.orig_frame_pc, "Continuing returned to the place we started.")
|