teak-llvm/lldb/packages/Python/lldbsuite/test/tools/lldb-server/TestGdbRemote_vContThreads.py
Michał Górny 8d9400b65b [lldb] [Process/NetBSD] Improve threading support
Implement major improvements to multithreaded program support.  Notably,
support tracking new and exited threads, associate signals and events
with correct threads and support controlling individual threads when
resuming.

Firstly, use PT_SET_EVENT_MASK to enable reporting of created and exited
threads via SIGTRAP.  Handle TRAP_LWP events to keep track
of the currently running threads.

Secondly, update the signal (both generic and SIGTRAP) handling code
to account for per-thread signals correctly.  Signals delivered
to the whole process are reported on all threads, while per-thread
signals and events are reported only to the specific thread.
The remaining threads are marked as 'stopped with no reason'.  Note that
NetBSD always stops all threads on debugger events.

Thirdly, implement the ability to set every thread as running, stopped
or single-stepping separately while continuing the process.  This also
provides the ability to send a signal to the whole process or to one
of its thread while resuming.

Differential Revision: https://reviews.llvm.org/D70022
2019-11-25 20:11:58 +01:00

150 lines
5.0 KiB
Python

from __future__ import print_function
import json
import re
import gdbremote_testcase
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class TestGdbRemote_vContThreads(gdbremote_testcase.GdbRemoteTestCaseBase):
mydir = TestBase.compute_mydir(__file__)
def start_threads(self, num):
procs = self.prep_debug_monitor_and_inferior(
inferior_args=['thread:new'] * num + ['@started'])
# start the process and wait for output
self.test_sequence.add_log_lines([
"read packet: $c#63",
{"type": "output_match", "regex": self.maybe_strict_output_regex(
r"@started\r\n")},
], True)
# then interrupt it
self.add_interrupt_packets()
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), num + 1)
self.reset_test_sequence()
return threads
def signal_one_thread(self):
threads = self.start_threads(1)
# try sending a signal to one of the two threads
self.test_sequence.add_log_lines([
"read packet: $vCont;C{0:x}:{1:x};c#00".format(
lldbutil.get_signal_number('SIGUSR1'), threads[0]),
{"direction": "send", "regex": r"^\$W00#b7$"},
], True)
context = self.expect_gdbremote_sequence()
self.assertIsNotNone(context)
@skipUnlessPlatform(["netbsd"])
@debugserver_test
def test_signal_one_thread_debugserver(self):
self.init_debugserver_test()
self.build()
self.set_inferior_startup_launch()
self.signal_one_thread()
@skipUnlessPlatform(["netbsd"])
@llgs_test
def test_signal_one_thread_llgs(self):
self.init_llgs_test()
self.build()
self.set_inferior_startup_launch()
self.signal_one_thread()
def signal_all_threads(self):
threads = self.start_threads(1)
# try sending a signal to two threads (= the process)
self.test_sequence.add_log_lines([
"read packet: $vCont;C{0:x}:{1:x};C{0:x}:{2:x}#00".format(
lldbutil.get_signal_number('SIGUSR1'),
threads[0], threads[1]),
{"direction": "send", "regex": r"^\$W00#b7$"},
], True)
context = self.expect_gdbremote_sequence()
self.assertIsNotNone(context)
@skipUnlessPlatform(["netbsd"])
@debugserver_test
def test_signal_all_threads_debugserver(self):
self.init_debugserver_test()
self.build()
self.set_inferior_startup_launch()
self.signal_all_threads()
@skipUnlessPlatform(["netbsd"])
@llgs_test
def test_signal_all_threads_llgs(self):
self.init_llgs_test()
self.build()
self.set_inferior_startup_launch()
self.signal_all_threads()
def signal_two_of_three_threads(self):
threads = self.start_threads(2)
# try sending a signal to 2 out of 3 threads
self.test_sequence.add_log_lines([
"read packet: $vCont;C{0:x}:{1:x};C{0:x}:{2:x};c#00".format(
lldbutil.get_signal_number('SIGUSR1'),
threads[1], threads[2]),
{"direction": "send", "regex": r"^\$E1e#db$"},
], True)
context = self.expect_gdbremote_sequence()
self.assertIsNotNone(context)
@skipUnlessPlatform(["netbsd"])
@debugserver_test
def test_signal_two_of_three_threads_debugserver(self):
self.init_debugserver_test()
self.build()
self.set_inferior_startup_launch()
self.signal_two_of_three_threads()
@skipUnlessPlatform(["netbsd"])
@llgs_test
def test_signal_two_of_three_threads_llgs(self):
self.init_llgs_test()
self.build()
self.set_inferior_startup_launch()
self.signal_two_of_three_threads()
def signal_two_signals(self):
threads = self.start_threads(1)
# try sending two different signals to two threads
self.test_sequence.add_log_lines([
"read packet: $vCont;C{0:x}:{1:x};C{2:x}:{3:x}#00".format(
lldbutil.get_signal_number('SIGUSR1'), threads[0],
lldbutil.get_signal_number('SIGUSR2'), threads[1]),
{"direction": "send", "regex": r"^\$E1e#db$"},
], True)
context = self.expect_gdbremote_sequence()
self.assertIsNotNone(context)
@skipUnlessPlatform(["netbsd"])
@debugserver_test
def test_signal_two_signals_debugserver(self):
self.init_debugserver_test()
self.build()
self.set_inferior_startup_launch()
self.signal_two_signals()
@skipUnlessPlatform(["netbsd"])
@llgs_test
def test_signal_two_signals_llgs(self):
self.init_llgs_test()
self.build()
self.set_inferior_startup_launch()
self.signal_two_signals()