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import json
import re
import gdbremote_testcase
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class TestGdbRemoteThreadsInStopReply(
gdbremote_testcase.GdbRemoteTestCaseBase):
mydir = TestBase.compute_mydir(__file__)
ENABLE_THREADS_IN_STOP_REPLY_ENTRIES = [
"read packet: $QListThreadsInStopReply#21",
"send packet: $OK#00",
]
def gather_stop_reply_fields(self, post_startup_log_lines, thread_count,
field_names):
# 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)
self.add_register_info_collection_packets()
self.add_process_info_collection_packets()
# Assumes test_sequence has anything added needed to setup the initial state.
# (Like optionally enabling QThreadsInStopReply.)
if post_startup_log_lines:
self.test_sequence.add_log_lines(post_startup_log_lines, True)
self.test_sequence.add_log_lines([
"read packet: $c#63"
], True)
context = self.expect_gdbremote_sequence()
self.assertIsNotNone(context)
hw_info = self.parse_hw_info(context)
# Give threads time to start up, then break.
time.sleep(self._WAIT_TIMEOUT)
self.reset_test_sequence()
self.test_sequence.add_log_lines(
[
"read packet: {}".format(
chr(3)),
{
"direction": "send",
"regex": r"^\$T([0-9a-fA-F]+)([^#]+)#[0-9a-fA-F]{2}$",
"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,
timeout_seconds=self._WAIT_TIMEOUT)
self.assertIsNotNone(threads)
self.assertEqual(len(threads), thread_count)
# Run, then stop the process, grab the stop reply content.
self.reset_test_sequence()
self.test_sequence.add_log_lines(["read packet: $c#63",
"read packet: {}".format(chr(3)),
{"direction": "send",
"regex": r"^\$T([0-9a-fA-F]+)([^#]+)#[0-9a-fA-F]{2}$",
"capture": {1: "stop_result",
2: "key_vals_text"}},
],
True)
context = self.expect_gdbremote_sequence()
self.assertIsNotNone(context)
# Parse the 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)
result = dict();
result["pc_register"] = hw_info["pc_register"]
result["little_endian"] = hw_info["little_endian"]
for key_field in field_names:
result[key_field] = kv_dict.get(key_field)
return result
def gather_stop_reply_threads(self, post_startup_log_lines, thread_count):
# Pull out threads from stop response.
stop_reply_threads_text = self.gather_stop_reply_fields(
post_startup_log_lines, thread_count, ["threads"])["threads"]
if stop_reply_threads_text:
return [int(thread_id, 16)
for thread_id in stop_reply_threads_text.split(",")]
else:
return []
def gather_stop_reply_pcs(self, post_startup_log_lines, thread_count):
results = self.gather_stop_reply_fields( post_startup_log_lines,
thread_count, ["threads", "thread-pcs"])
if not results:
return []
threads_text = results["threads"]
pcs_text = results["thread-pcs"]
thread_ids = threads_text.split(",")
pcs = pcs_text.split(",")
self.assertEquals(len(thread_ids), len(pcs))
thread_pcs = dict()
for i in range(0, len(pcs)):
thread_pcs[int(thread_ids[i], 16)] = pcs[i]
result = dict()
result["thread_pcs"] = thread_pcs
result["pc_register"] = results["pc_register"]
result["little_endian"] = results["little_endian"]
return result
def switch_endian(self, egg):
return "".join(reversed(re.findall("..", egg)))
def parse_hw_info(self, context):
self.assertIsNotNone(context)
process_info = self.parse_process_info_response(context)
endian = process_info.get("endian")
reg_info = self.parse_register_info_packets(context)
(pc_lldb_reg_index, pc_reg_info) = self.find_pc_reg_info(reg_info)
hw_info = dict()
hw_info["pc_register"] = pc_lldb_reg_index
hw_info["little_endian"] = (endian == "little")
return hw_info
def gather_threads_info_pcs(self, pc_register, little_endian):
self.reset_test_sequence()
self.test_sequence.add_log_lines(
[
"read packet: $jThreadsInfo#c1",
{
"direction": "send",
"regex": r"^\$(.*)#[0-9a-fA-F]{2}$",
"capture": {
1: "threads_info"}},
],
True)
context = self.expect_gdbremote_sequence()
self.assertIsNotNone(context)
threads_info = context.get("threads_info")
register = str(pc_register)
# The jThreadsInfo response is not valid JSON data, so we have to
# clean it up first.
jthreads_info = json.loads(re.sub(r"}]", "}", threads_info))
thread_pcs = dict()
for thread_info in jthreads_info:
tid = thread_info["tid"]
pc = thread_info["registers"][register]
thread_pcs[tid] = self.switch_endian(pc) if little_endian else pc
return thread_pcs
def QListThreadsInStopReply_supported(self):
procs = self.prep_debug_monitor_and_inferior()
self.test_sequence.add_log_lines(
self.ENABLE_THREADS_IN_STOP_REPLY_ENTRIES, True)
context = self.expect_gdbremote_sequence()
self.assertIsNotNone(context)
@skipIfDarwinEmbedded # <rdar://problem/34539270> lldb-server tests not updated to work on ios etc yet
@debugserver_test
def test_QListThreadsInStopReply_supported_debugserver(self):
self.init_debugserver_test()
self.build()
self.set_inferior_startup_launch()
self.QListThreadsInStopReply_supported()
@llgs_test
def test_QListThreadsInStopReply_supported_llgs(self):
self.init_llgs_test()
self.build()
self.set_inferior_startup_launch()
self.QListThreadsInStopReply_supported()
def stop_reply_reports_multiple_threads(self, thread_count):
# Gather threads from stop notification when QThreadsInStopReply is
# enabled.
stop_reply_threads = self.gather_stop_reply_threads(
self.ENABLE_THREADS_IN_STOP_REPLY_ENTRIES, thread_count)
self.assertEqual(len(stop_reply_threads), thread_count)
@skipIfDarwinEmbedded # <rdar://problem/34539270> lldb-server tests not updated to work on ios etc yet
@debugserver_test
def test_stop_reply_reports_multiple_threads_debugserver(self):
self.init_debugserver_test()
self.build()
self.set_inferior_startup_launch()
self.stop_reply_reports_multiple_threads(5)
# In current implementation of llgs on Windows, as a response to '\x03' packet, the debugger
# of the native process will trigger a call to DebugBreakProcess that will create a new thread
# to handle the exception debug event. So one more stop thread will be notified to the
# delegate, e.g. llgs. So tests below to assert the stop threads number will all fail.
@expectedFailureAll(oslist=["windows"])
@skipIfNetBSD
@llgs_test
def test_stop_reply_reports_multiple_threads_llgs(self):
self.init_llgs_test()
self.build()
self.set_inferior_startup_launch()
self.stop_reply_reports_multiple_threads(5)
def no_QListThreadsInStopReply_supplies_no_threads(self, thread_count):
# Gather threads from stop notification when QThreadsInStopReply is not
# enabled.
stop_reply_threads = self.gather_stop_reply_threads(None, thread_count)
self.assertEqual(len(stop_reply_threads), 0)
@skipIfDarwinEmbedded # <rdar://problem/34539270> lldb-server tests not updated to work on ios etc yet
@debugserver_test
def test_no_QListThreadsInStopReply_supplies_no_threads_debugserver(self):
self.init_debugserver_test()
self.build()
self.set_inferior_startup_launch()
self.no_QListThreadsInStopReply_supplies_no_threads(5)
@expectedFailureAll(oslist=["windows"])
@skipIfNetBSD
@llgs_test
def test_no_QListThreadsInStopReply_supplies_no_threads_llgs(self):
self.init_llgs_test()
self.build()
self.set_inferior_startup_launch()
self.no_QListThreadsInStopReply_supplies_no_threads(5)
def stop_reply_reports_correct_threads(self, thread_count):
# Gather threads from stop notification when QThreadsInStopReply is
# enabled.
stop_reply_threads = self.gather_stop_reply_threads(
self.ENABLE_THREADS_IN_STOP_REPLY_ENTRIES, thread_count)
self.assertEqual(len(stop_reply_threads), thread_count)
# Gather threads from q{f,s}ThreadInfo.
self.reset_test_sequence()
self.add_threadinfo_collection_packets()
context = self.expect_gdbremote_sequence()
self.assertIsNotNone(context)
threads = self.parse_threadinfo_packets(context)
self.assertIsNotNone(threads)
self.assertEqual(len(threads), thread_count)
# Ensure each thread in q{f,s}ThreadInfo appears in stop reply threads
for tid in threads:
self.assertTrue(tid in stop_reply_threads)
@skipIfDarwinEmbedded # <rdar://problem/34539270> lldb-server tests not updated to work on ios etc yet
@debugserver_test
def test_stop_reply_reports_correct_threads_debugserver(self):
self.init_debugserver_test()
self.build()
self.set_inferior_startup_launch()
self.stop_reply_reports_correct_threads(5)
@expectedFailureAll(oslist=["windows"])
@skipIfNetBSD
@llgs_test
def test_stop_reply_reports_correct_threads_llgs(self):
self.init_llgs_test()
self.build()
self.set_inferior_startup_launch()
self.stop_reply_reports_correct_threads(5)
def stop_reply_contains_thread_pcs(self, thread_count):
results = self.gather_stop_reply_pcs(
self.ENABLE_THREADS_IN_STOP_REPLY_ENTRIES, thread_count)
stop_reply_pcs = results["thread_pcs"]
pc_register = results["pc_register"]
little_endian = results["little_endian"]
self.assertEqual(len(stop_reply_pcs), thread_count)
threads_info_pcs = self.gather_threads_info_pcs(pc_register,
little_endian)
self.assertEqual(len(threads_info_pcs), thread_count)
for thread_id in stop_reply_pcs:
self.assertTrue(thread_id in threads_info_pcs)
self.assertTrue(int(stop_reply_pcs[thread_id], 16)
== int(threads_info_pcs[thread_id], 16))
@expectedFailureAll(oslist=["windows"])
@skipIfNetBSD
@llgs_test
def test_stop_reply_contains_thread_pcs_llgs(self):
self.init_llgs_test()
self.build()
self.set_inferior_startup_launch()
self.stop_reply_contains_thread_pcs(5)
@skipIfDarwinEmbedded # <rdar://problem/34539270> lldb-server tests not updated to work on ios etc yet
@debugserver_test
def test_stop_reply_contains_thread_pcs_debugserver(self):
self.init_debugserver_test()
self.build()
self.set_inferior_startup_launch()
self.stop_reply_contains_thread_pcs(5)
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