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[lldb] [llgs] Fix ? packet response for running threads

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Fix the response to `?` packet for threads that are running at the time
(in non-stop mode).  The previous code would wrongly send or queue
an empty response for them.

Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.llvm.org/D128879
This commit is contained in:
Michał Górny 2022-06-30 07:58:12 +02:00
parent 81e993f08d
commit ab9f1e88fd
2 changed files with 30 additions and 6 deletions
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16
lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerLLGS.cpp
View file

@ -1025,9 +1025,11 @@ void GDBRemoteCommunicationServerLLGS::EnqueueStopReplyPackets(
return;
for (NativeThreadProtocol &listed_thread : m_current_process->Threads()) {
if (listed_thread.GetID() != thread_to_skip)
m_stop_notification_queue.push_back(
PrepareStopReplyPacketForThread(listed_thread).GetString().str());
if (listed_thread.GetID() != thread_to_skip) {
StreamString stop_reply = PrepareStopReplyPacketForThread(listed_thread);
if (!stop_reply.Empty())
m_stop_notification_queue.push_back(stop_reply.GetString().str());
}
}
}
@ -1885,9 +1887,11 @@ GDBRemoteCommunicationServerLLGS::Handle_stop_reason(
// the current thread (for clients that don't actually support multiple
// stop reasons).
NativeThreadProtocol *thread = m_current_process->GetCurrentThread();
if (thread)
m_stop_notification_queue.push_back(
PrepareStopReplyPacketForThread(*thread).GetString().str());
if (thread) {
StreamString stop_reply = PrepareStopReplyPacketForThread(*thread);
if (!stop_reply.Empty())
m_stop_notification_queue.push_back(stop_reply.GetString().str());
}
EnqueueStopReplyPackets(thread ? thread->GetID()
: LLDB_INVALID_THREAD_ID);
}

20
lldb/test/API/tools/lldb-server/TestNonStop.py
View file

@ -341,3 +341,23 @@ class LldbGdbServerTestCase(gdbremote_testcase.GdbRemoteTestCaseBase):
"send packet: $OK#00",
], True)
self.expect_gdbremote_sequence()
@add_test_categories(["llgs"])
def test_stop_reason_while_running(self):
self.build()
self.set_inferior_startup_launch()
procs = self.prep_debug_monitor_and_inferior(
inferior_args=["thread:new", "thread:new", "stop", "sleep:15"])
self.test_sequence.add_log_lines(
["read packet: $QNonStop:1#00",
"send packet: $OK#00",
# stop is used to synchronize starting threads
"read packet: $c#63",
"send packet: $OK#00",
{"direction": "send", "regex": "%Stop:T.*"},
"read packet: $c#63",
"send packet: $OK#00",
"read packet: $?#00",
"send packet: $OK#00",
], True)
self.expect_gdbremote_sequence()