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import unittest2
import gdbremote_testcase
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class TestGdbRemote_qThreadStopInfo(gdbremote_testcase.GdbRemoteTestCaseBase):
mydir = TestBase.compute_mydir(__file__)
THREAD_COUNT = 5
def gather_stop_replies_via_qThreadStopInfo(self, thread_count):
# Set up the inferior args.
inferior_args = []
for i in range(thread_count - 1):
inferior_args.append("thread:new")
inferior_args.append("sleep:10")
procs = self.prep_debug_monitor_and_inferior(
inferior_args=inferior_args)
# Assumes test_sequence has anything added needed to setup the initial state.
# (Like optionally enabling QThreadsInStopReply.)
self.test_sequence.add_log_lines([
"read packet: $c#63"
], True)
context = self.expect_gdbremote_sequence()
self.assertIsNotNone(context)
# Give threads time to start up, then break.
time.sleep(self.DEFAULT_SLEEP)
self.reset_test_sequence()
self.test_sequence.add_log_lines(
[
"read packet: {}".format(
chr(3)),
{
"direction": "send",
"regex": r"^\$T([0-9a-fA-F]+)([^#]+)#[0-9a-fA-F]{2}$",
"capture": {
1: "stop_result",
2: "key_vals_text"}},
],
True)
context = self.expect_gdbremote_sequence()
self.assertIsNotNone(context)
# Wait until all threads have started.
threads = self.wait_for_thread_count(thread_count)
self.assertIsNotNone(threads)
# On Windows, there could be more threads spawned. For example, DebugBreakProcess will
# create a new thread from the debugged process to handle an exception event. So here we
# assert 'GreaterEqual' condition.
triple = self.dbg.GetSelectedPlatform().GetTriple()
if re.match(".*-.*-windows", triple):
self.assertGreaterEqual(len(threads), thread_count)
else:
self.assertEqual(len(threads), thread_count)
# Grab stop reply for each thread via qThreadStopInfo{tid:hex}.
stop_replies = {}
thread_dicts = {}
for thread in threads:
# Run the qThreadStopInfo command.
self.reset_test_sequence()
self.test_sequence.add_log_lines(
[
"read packet: $qThreadStopInfo{:x}#00".format(thread),
{
"direction": "send",
"regex": r"^\$T([0-9a-fA-F]+)([^#]+)#[0-9a-fA-F]{2}$",
"capture": {
1: "stop_result",
2: "key_vals_text"}},
],
True)
context = self.expect_gdbremote_sequence()
self.assertIsNotNone(context)
# Parse stop reply contents.
key_vals_text = context.get("key_vals_text")
self.assertIsNotNone(key_vals_text)
kv_dict = self.parse_key_val_dict(key_vals_text)
self.assertIsNotNone(kv_dict)
# Verify there is a thread and that it matches the expected thread
# id.
kv_thread = kv_dict.get("thread")
self.assertIsNotNone(kv_thread)
kv_thread_id = int(kv_thread, 16)
self.assertEqual(kv_thread_id, thread)
# Grab the stop id reported.
stop_result_text = context.get("stop_result")
self.assertIsNotNone(stop_result_text)
stop_replies[kv_thread_id] = int(stop_result_text, 16)
# Hang on to the key-val dictionary for the thread.
thread_dicts[kv_thread_id] = kv_dict
return (stop_replies, thread_dicts)
@skipIfNetBSD
def test_qThreadStopInfo_works_for_multiple_threads(self):
self.build()
self.set_inferior_startup_launch()
(stop_replies, _) = self.gather_stop_replies_via_qThreadStopInfo(self.THREAD_COUNT)
triple = self.dbg.GetSelectedPlatform().GetTriple()
# Consider one more thread created by calling DebugBreakProcess.
if re.match(".*-.*-windows", triple):
self.assertGreaterEqual(len(stop_replies), self.THREAD_COUNT)
else:
self.assertEqual(len(stop_replies), self.THREAD_COUNT)
@expectedFailureAll(oslist=["freebsd"], bugnumber="llvm.org/pr48418")
@expectedFailureNetBSD
def test_qThreadStopInfo_only_reports_one_thread_stop_reason_during_interrupt(self):
self.build()
self.set_inferior_startup_launch()
(stop_replies, _) = self.gather_stop_replies_via_qThreadStopInfo(self.THREAD_COUNT)
self.assertIsNotNone(stop_replies)
no_stop_reason_count = sum(
1 for stop_reason in list(
stop_replies.values()) if stop_reason == 0)
with_stop_reason_count = sum(
1 for stop_reason in list(
stop_replies.values()) if stop_reason != 0)
# All but one thread should report no stop reason.
triple = self.dbg.GetSelectedPlatform().GetTriple()
# Consider one more thread created by calling DebugBreakProcess.
if re.match(".*-.*-windows", triple):
self.assertGreaterEqual(no_stop_reason_count, self.THREAD_COUNT - 1)
else:
self.assertEqual(no_stop_reason_count, self.THREAD_COUNT - 1)
# Only one thread should should indicate a stop reason.
self.assertEqual(with_stop_reason_count, 1)
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