mgorny updated this revision to Diff 444295.
mgorny added a comment.
Implemented the requested changes.
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D128893/new/
https://reviews.llvm.org/D128893
Files:
lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerLLGS.cpp
lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerLLGS.h
lldb/test/API/tools/lldb-server/TestNonStop.py
Index: lldb/test/API/tools/lldb-server/TestNonStop.py
===================================================================
--- lldb/test/API/tools/lldb-server/TestNonStop.py
+++ lldb/test/API/tools/lldb-server/TestNonStop.py
@@ -366,3 +366,33 @@
"send packet: $OK#00",
], True)
self.expect_gdbremote_sequence()
+
+ @add_test_categories(["llgs"])
+ def test_leave_nonstop(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",
+ # verify that the threads are running now
+ "read packet: $?#00",
+ "send packet: $OK#00",
+ "read packet: $QNonStop:0#00",
+ "send packet: $OK#00",
+ # we should issue some random request now to verify that the stub
+ # did not send stop reasons -- we may verify whether notification
+ # queue was cleared while at it
+ "read packet: $vStopped#00",
+ "send packet: $Eff#00",
+ "read packet: $?#00",
+ {"direction": "send", "regex": "[$]T.*"},
+ ], True)
+ self.expect_gdbremote_sequence()
Index: lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerLLGS.h
===================================================================
--- lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerLLGS.h
+++ lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerLLGS.h
@@ -88,8 +88,9 @@
struct DebuggedProcess {
enum class Flag {
vkilled = (1u << 0),
+ stopping_due_to_qnonstop = (1u << 1),
- LLVM_MARK_AS_BITMASK_ENUM(vkilled)
+ LLVM_MARK_AS_BITMASK_ENUM(stopping_due_to_qnonstop)
};
std::unique_ptr<NativeProcessProtocol> process_up;
Index: lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerLLGS.cpp
===================================================================
--- lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerLLGS.cpp
+++ lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerLLGS.cpp
@@ -1920,6 +1920,24 @@
bool force_synchronous) {
Log *log = GetLog(LLDBLog::Process);
+ DebuggedProcess &process_info = m_debugged_processes.at(process.GetID());
+ if (bool(process_info.flags &
+ DebuggedProcess::Flag::stopping_due_to_qnonstop)) {
+ process_info.flags &= ~DebuggedProcess::Flag::stopping_due_to_qnonstop;
+
+ // Check if we are waiting for any more processes to stop. If we are,
+ // do not send the OK response yet.
+ for (const auto &it : m_debugged_processes) {
+ if (bool(it.second.flags &
+ DebuggedProcess::Flag::stopping_due_to_qnonstop))
+ return PacketResult::Success;
+ }
+
+ // If all expected processes were stopped after a QNonStop:0 request,
+ // send the OK response.
+ return SendOKResponse();
+ }
+
switch (process_state) {
case eStateAttaching:
case eStateLaunching:
@@ -3917,12 +3935,35 @@
GDBRemoteCommunication::PacketResult
GDBRemoteCommunicationServerLLGS::Handle_QNonStop(
StringExtractorGDBRemote &packet) {
+ Log *log = GetLog(LLDBLog::Process);
+
StringRef packet_str{packet.GetStringRef()};
assert(packet_str.startswith("QNonStop:"));
packet_str.consume_front("QNonStop:");
if (packet_str == "0") {
+ bool any_running = false;
+ for (auto &process_it : m_debugged_processes) {
+ if (process_it.second.process_up->IsRunning()) {
+ Status error = process_it.second.process_up->Interrupt();
+ if (error.Fail()) {
+ LLDB_LOG(log,
+ "while disabling nonstop, failed to halt process {0}: {1}",
+ process_it.first, error);
+ return SendErrorResponse(0x41);
+ }
+ // we must not send stop reasons after QNonStop
+ process_it.second.flags |=
+ DebuggedProcess::Flag::stopping_due_to_qnonstop;
+ any_running = true;
+ }
+ }
+ m_stdio_notification_queue.clear();
+ m_stop_notification_queue.clear();
m_non_stop = false;
- // TODO: stop all threads
+ // If we are stopping anything, defer sending the OK response until we're
+ // done.
+ if (any_running)
+ return PacketResult::Success;
} else if (packet_str == "1") {
m_non_stop = true;
} else
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