GDBRemoteCommunication::PacketResult
GDBRemoteCommunicationServer::GetPacketAndSendResponse (uint32_t timeout_usec,
Error &error,
bool &interrupt,
bool &quit)
{
StringExtractorGDBRemote packet;
PacketResult packet_result = WaitForPacketWithTimeoutMicroSecondsNoLock (packet, timeout_usec, false);
if (packet_result == PacketResult::Success)
{
const StringExtractorGDBRemote::ServerPacketType packet_type = packet.GetServerPacketType ();
switch (packet_type)
{
case StringExtractorGDBRemote::eServerPacketType_nack:
case StringExtractorGDBRemote::eServerPacketType_ack:
break;
case StringExtractorGDBRemote::eServerPacketType_invalid:
error.SetErrorString("invalid packet");
quit = true;
break;
case StringExtractorGDBRemote::eServerPacketType_unimplemented:
packet_result = SendUnimplementedResponse (packet.GetStringRef().c_str());
break;
default:
auto handler_it = m_packet_handlers.find(packet_type);
if (handler_it == m_packet_handlers.end())
packet_result = SendUnimplementedResponse (packet.GetStringRef().c_str());
else
packet_result = handler_it->second (packet, error, interrupt, quit);
break;
}
}
else
{
if (!IsConnected())
{
error.SetErrorString("lost connection");
quit = true;
}
else
{
error.SetErrorString("timeout");
}
}
// Check if anything occurred that would force us to want to exit.
if (m_exit_now)
quit = true;
return packet_result;
}
size_t
GDBRemoteCommunication::WaitForPacketWithTimeoutMicroSecondsNoLock (StringExtractorGDBRemote &packet, uint32_t timeout_usec)
{
uint8_t buffer[8192];
Error error;
Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PACKETS | GDBR_LOG_VERBOSE));
// Check for a packet from our cache first without trying any reading...
if (CheckForPacket (NULL, 0, packet))
return packet.GetStringRef().size();
bool timed_out = false;
while (IsConnected() && !timed_out)
{
lldb::ConnectionStatus status = eConnectionStatusNoConnection;
size_t bytes_read = Read (buffer, sizeof(buffer), timeout_usec, status, &error);
if (log)
log->Printf ("%s: Read (buffer, (sizeof(buffer), timeout_usec = 0x%x, status = %s, error = %s) => bytes_read = %" PRIu64,
__PRETTY_FUNCTION__,
timeout_usec,
Communication::ConnectionStatusAsCString (status),
error.AsCString(),
(uint64_t)bytes_read);
if (bytes_read > 0)
{
if (CheckForPacket (buffer, bytes_read, packet))
return packet.GetStringRef().size();
}
else
{
switch (status)
{
case eConnectionStatusTimedOut:
timed_out = true;
break;
case eConnectionStatusSuccess:
//printf ("status = success but error = %s\n", error.AsCString("<invalid>"));
break;
case eConnectionStatusEndOfFile:
case eConnectionStatusNoConnection:
case eConnectionStatusLostConnection:
case eConnectionStatusError:
Disconnect();
break;
}
}
}
packet.Clear ();
return 0;
}
TEST_F(GDBRemoteClientBaseTest, SendContinueDelegateStructuredDataReceipt) {
// Build the plain-text version of the JSON data we will have the
// server send.
const std::string json_payload =
"{ \"type\": \"MyFeatureType\", "
" \"elements\": [ \"entry1\", \"entry2\" ] }";
const std::string json_packet = "JSON-async:" + json_payload;
// Escape it properly for transit.
StreamGDBRemote stream;
stream.PutEscapedBytes(json_packet.c_str(), json_packet.length());
stream.Flush();
StringExtractorGDBRemote response;
// Send async structured data packet, then stop.
ASSERT_EQ(PacketResult::Success, server.SendPacket(stream.GetData()));
ASSERT_EQ(PacketResult::Success, server.SendPacket("T01"));
ASSERT_EQ(eStateStopped, SendCPacket(response));
ASSERT_EQ("T01", response.GetStringRef());
ASSERT_EQ(1ul, delegate.structured_data_packets.size());
// Verify the packet contents. It should have been unescaped upon packet
// reception.
ASSERT_EQ(json_packet, delegate.structured_data_packets[0]);
}
GDBRemoteCommunication::PacketResult
GDBRemoteClientBase::SendPacketAndWaitForResponseNoLock(
llvm::StringRef payload, StringExtractorGDBRemote &response) {
PacketResult packet_result = SendPacketNoLock(payload);
if (packet_result != PacketResult::Success)
return packet_result;
const size_t max_response_retries = 3;
for (size_t i = 0; i < max_response_retries; ++i) {
packet_result = ReadPacket(response, GetPacketTimeout(), true);
// Make sure we received a response
if (packet_result != PacketResult::Success)
return packet_result;
// Make sure our response is valid for the payload that was sent
if (response.ValidateResponse())
return packet_result;
// Response says it wasn't valid
Log *log = ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PACKETS);
if (log)
log->Printf(
"error: packet with payload \"%.*s\" got invalid response \"%s\": %s",
int(payload.size()), payload.data(), response.GetStringRef().c_str(),
(i == (max_response_retries - 1))
? "using invalid response and giving up"
: "ignoring response and waiting for another");
}
return packet_result;
}
GDBRemoteCommunication::PacketResult
GDBRemoteCommunicationServer::SendIllFormedResponse(
const StringExtractorGDBRemote &failed_packet, const char *message) {
Log *log(ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PACKETS));
if (log)
log->Printf("GDBRemoteCommunicationServer::%s: ILLFORMED: '%s' (%s)",
__FUNCTION__, failed_packet.GetStringRef().c_str(),
message ? message : "");
return SendErrorResponse(0x03);
}
TEST_F(GDBRemoteClientBaseTest, SendContinueDelegateInterface) {
StringExtractorGDBRemote response;
// Continue. We'll have the server send a bunch of async packets before it
// stops.
ASSERT_EQ(PacketResult::Success, server.SendPacket("O4142"));
ASSERT_EQ(PacketResult::Success, server.SendPacket("Apro"));
ASSERT_EQ(PacketResult::Success, server.SendPacket("O4344"));
ASSERT_EQ(PacketResult::Success, server.SendPacket("Afile"));
ASSERT_EQ(PacketResult::Success, server.SendPacket("T01"));
ASSERT_EQ(eStateStopped, SendCPacket(response));
ASSERT_EQ("T01", response.GetStringRef());
ASSERT_EQ(PacketResult::Success, server.GetPacket(response));
ASSERT_EQ("c", response.GetStringRef());
EXPECT_EQ("ABCD", delegate.output);
EXPECT_EQ("profile", delegate.misc_data);
EXPECT_EQ(1u, delegate.stop_reply_called);
}
TEST_F(GDBRemoteClientBaseTest, SendContinueAndWait) {
StringExtractorGDBRemote response;
ContinueFixture fix;
if (HasFailure())
return;
// Continue. The inferior will stop with a signal.
ASSERT_EQ(PacketResult::Success, fix.server.SendPacket("T01"));
ASSERT_EQ(eStateStopped, fix.SendCPacket(response));
ASSERT_EQ("T01", response.GetStringRef());
ASSERT_EQ(PacketResult::Success, fix.server.GetPacket(response));
ASSERT_EQ("c", response.GetStringRef());
// Continue. The inferior will exit.
ASSERT_EQ(PacketResult::Success, fix.server.SendPacket("W01"));
ASSERT_EQ(eStateExited, fix.SendCPacket(response));
ASSERT_EQ("W01", response.GetStringRef());
ASSERT_EQ(PacketResult::Success, fix.server.GetPacket(response));
ASSERT_EQ("c", response.GetStringRef());
// Continue. The inferior will get killed.
ASSERT_EQ(PacketResult::Success, fix.server.SendPacket("X01"));
ASSERT_EQ(eStateExited, fix.SendCPacket(response));
ASSERT_EQ("X01", response.GetStringRef());
ASSERT_EQ(PacketResult::Success, fix.server.GetPacket(response));
ASSERT_EQ("c", response.GetStringRef());
}
TEST_F(GDBRemoteClientBaseTest, SendPacketAndReceiveResponseWithOutputSupport) {
StringExtractorGDBRemote response;
StreamString command_output;
ASSERT_EQ(PacketResult::Success, server.SendPacket("O"));
ASSERT_EQ(PacketResult::Success, server.SendPacket("O48656c6c6f2c"));
ASSERT_EQ(PacketResult::Success, server.SendPacket("O20"));
ASSERT_EQ(PacketResult::Success, server.SendPacket("O"));
ASSERT_EQ(PacketResult::Success, server.SendPacket("O776f726c64"));
ASSERT_EQ(PacketResult::Success, server.SendPacket("OK"));
PacketResult result = client.SendPacketAndReceiveResponseWithOutputSupport(
"qRcmd,test", response, true,
[&command_output](llvm::StringRef output) { command_output << output; });
ASSERT_EQ(PacketResult::Success, result);
ASSERT_EQ("OK", response.GetStringRef());
ASSERT_EQ("Hello, world", command_output.GetString().str());
}
TEST_F(GDBRemoteCommunicationClientTest, TestPacketSpeedJSON) {
std::thread server_thread([this] {
for (;;) {
StringExtractorGDBRemote request;
PacketResult result = server.GetPacket(request);
if (result == PacketResult::ErrorDisconnected)
return;
ASSERT_EQ(PacketResult::Success, result);
StringRef ref = request.GetStringRef();
ASSERT_TRUE(ref.consume_front("qSpeedTest:response_size:"));
int size;
ASSERT_FALSE(ref.consumeInteger(10, size)) << "ref: " << ref;
std::string response(size, 'X');
ASSERT_EQ(PacketResult::Success, server.SendPacket(response));
}
});
StreamString ss;
client.TestPacketSpeed(10, 32, 32, 4096, true, ss);
client.Disconnect();
server_thread.join();
GTEST_LOG_(INFO) << "Formatted output: " << ss.GetData();
auto object_sp = StructuredData::ParseJSON(ss.GetString());
ASSERT_TRUE(bool(object_sp));
auto dict_sp = object_sp->GetAsDictionary();
ASSERT_TRUE(bool(dict_sp));
object_sp = dict_sp->GetValueForKey("packet_speeds");
ASSERT_TRUE(bool(object_sp));
dict_sp = object_sp->GetAsDictionary();
ASSERT_TRUE(bool(dict_sp));
int num_packets;
ASSERT_TRUE(dict_sp->GetValueForKeyAsInteger("num_packets", num_packets))
<< ss.GetString();
ASSERT_EQ(10, num_packets);
}
//void *
//GDBRemoteCommunicationServer::AsyncThread (void *arg)
//{
// GDBRemoteCommunicationServer *server = (GDBRemoteCommunicationServer*) arg;
//
// Log *log;// (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS));
// if (log)
// log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %i) thread starting...", __FUNCTION__, arg, process->GetID());
//
// StringExtractorGDBRemote packet;
//
// while ()
// {
// if (packet.
// }
//
// if (log)
// log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %i) thread exiting...", __FUNCTION__, arg, process->GetID());
//
// process->m_async_thread = LLDB_INVALID_HOST_THREAD;
// return NULL;
//}
//
bool
GDBRemoteCommunicationServer::GetPacketAndSendResponse (uint32_t timeout_usec,
Error &error,
bool &interrupt,
bool &quit)
{
StringExtractorGDBRemote packet;
PacketResult packet_result = WaitForPacketWithTimeoutMicroSecondsNoLock (packet, timeout_usec);
if (packet_result == PacketResult::Success)
{
const StringExtractorGDBRemote::ServerPacketType packet_type = packet.GetServerPacketType ();
switch (packet_type)
{
case StringExtractorGDBRemote::eServerPacketType_nack:
case StringExtractorGDBRemote::eServerPacketType_ack:
break;
case StringExtractorGDBRemote::eServerPacketType_invalid:
error.SetErrorString("invalid packet");
quit = true;
break;
case StringExtractorGDBRemote::eServerPacketType_interrupt:
error.SetErrorString("interrupt received");
interrupt = true;
break;
default:
case StringExtractorGDBRemote::eServerPacketType_unimplemented:
packet_result = SendUnimplementedResponse (packet.GetStringRef().c_str());
break;
case StringExtractorGDBRemote::eServerPacketType_A:
packet_result = Handle_A (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_qfProcessInfo:
packet_result = Handle_qfProcessInfo (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_qsProcessInfo:
packet_result = Handle_qsProcessInfo (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_qC:
packet_result = Handle_qC (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_qHostInfo:
packet_result = Handle_qHostInfo (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_qLaunchGDBServer:
packet_result = Handle_qLaunchGDBServer (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_qKillSpawnedProcess:
packet_result = Handle_qKillSpawnedProcess (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_qLaunchSuccess:
packet_result = Handle_qLaunchSuccess (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_qGroupName:
packet_result = Handle_qGroupName (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_qProcessInfoPID:
packet_result = Handle_qProcessInfoPID (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_qSpeedTest:
packet_result = Handle_qSpeedTest (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_qUserName:
packet_result = Handle_qUserName (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_qGetWorkingDir:
packet_result = Handle_qGetWorkingDir(packet);
break;
case StringExtractorGDBRemote::eServerPacketType_QEnvironment:
packet_result = Handle_QEnvironment (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_QLaunchArch:
packet_result = Handle_QLaunchArch (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_QSetDisableASLR:
packet_result = Handle_QSetDisableASLR (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_QSetSTDIN:
packet_result = Handle_QSetSTDIN (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_QSetSTDOUT:
packet_result = Handle_QSetSTDOUT (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_QSetSTDERR:
packet_result = Handle_QSetSTDERR (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_QSetWorkingDir:
packet_result = Handle_QSetWorkingDir (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_QStartNoAckMode:
packet_result = Handle_QStartNoAckMode (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_qPlatform_mkdir:
packet_result = Handle_qPlatform_mkdir (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_qPlatform_chmod:
packet_result = Handle_qPlatform_chmod (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_qPlatform_shell:
packet_result = Handle_qPlatform_shell (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_vFile_open:
packet_result = Handle_vFile_Open (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_vFile_close:
packet_result = Handle_vFile_Close (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_vFile_pread:
packet_result = Handle_vFile_pRead (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_vFile_pwrite:
packet_result = Handle_vFile_pWrite (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_vFile_size:
packet_result = Handle_vFile_Size (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_vFile_mode:
packet_result = Handle_vFile_Mode (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_vFile_exists:
packet_result = Handle_vFile_Exists (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_vFile_stat:
packet_result = Handle_vFile_Stat (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_vFile_md5:
packet_result = Handle_vFile_MD5 (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_vFile_symlink:
packet_result = Handle_vFile_symlink (packet);
break;
case StringExtractorGDBRemote::eServerPacketType_vFile_unlink:
packet_result = Handle_vFile_unlink (packet);
break;
}
}
else
{
if (!IsConnected())
{
error.SetErrorString("lost connection");
quit = true;
}
else
{
error.SetErrorString("timeout");
}
}
return packet_result == PacketResult::Success;
}
bool
GDBRemoteCommunication::CheckForPacket (const uint8_t *src, size_t src_len, StringExtractorGDBRemote &packet)
{
// Put the packet data into the buffer in a thread safe fashion
Mutex::Locker locker(m_bytes_mutex);
Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PACKETS));
if (src && src_len > 0)
{
if (log && log->GetVerbose())
{
StreamString s;
log->Printf ("GDBRemoteCommunication::%s adding %u bytes: %.*s",
__FUNCTION__,
(uint32_t)src_len,
(uint32_t)src_len,
src);
}
m_bytes.append ((const char *)src, src_len);
}
// Parse up the packets into gdb remote packets
if (!m_bytes.empty())
{
// end_idx must be one past the last valid packet byte. Start
// it off with an invalid value that is the same as the current
// index.
size_t content_start = 0;
size_t content_length = 0;
size_t total_length = 0;
size_t checksum_idx = std::string::npos;
switch (m_bytes[0])
{
case '+': // Look for ack
case '-': // Look for cancel
case '\x03': // ^C to halt target
content_length = total_length = 1; // The command is one byte long...
break;
case '$':
// Look for a standard gdb packet?
{
size_t hash_pos = m_bytes.find('#');
if (hash_pos != std::string::npos)
{
if (hash_pos + 2 < m_bytes.size())
{
checksum_idx = hash_pos + 1;
// Skip the dollar sign
content_start = 1;
// Don't include the # in the content or the $ in the content length
content_length = hash_pos - 1;
total_length = hash_pos + 3; // Skip the # and the two hex checksum bytes
}
else
{
// Checksum bytes aren't all here yet
content_length = std::string::npos;
}
}
}
break;
default:
{
// We have an unexpected byte and we need to flush all bad
// data that is in m_bytes, so we need to find the first
// byte that is a '+' (ACK), '-' (NACK), \x03 (CTRL+C interrupt),
// or '$' character (start of packet header) or of course,
// the end of the data in m_bytes...
const size_t bytes_len = m_bytes.size();
bool done = false;
uint32_t idx;
for (idx = 1; !done && idx < bytes_len; ++idx)
{
switch (m_bytes[idx])
{
case '+':
case '-':
case '\x03':
case '$':
done = true;
break;
default:
break;
}
}
if (log)
log->Printf ("GDBRemoteCommunication::%s tossing %u junk bytes: '%.*s'",
__FUNCTION__, idx, idx, m_bytes.c_str());
m_bytes.erase(0, idx);
}
break;
}
if (content_length == std::string::npos)
{
packet.Clear();
return false;
}
else if (total_length > 0)
{
// We have a valid packet...
assert (content_length <= m_bytes.size());
assert (total_length <= m_bytes.size());
assert (content_length <= total_length);
bool success = true;
std::string &packet_str = packet.GetStringRef();
if (log)
{
// If logging was just enabled and we have history, then dump out what
// we have to the log so we get the historical context. The Dump() call that
// logs all of the packet will set a boolean so that we don't dump this more
// than once
if (!m_history.DidDumpToLog ())
m_history.Dump (log);
log->Printf("<%4" PRIu64 "> read packet: %.*s", (uint64_t)total_length, (int)(total_length), m_bytes.c_str());
}
m_history.AddPacket (m_bytes.c_str(), total_length, History::ePacketTypeRecv, total_length);
// Clear packet_str in case there is some existing data in it.
packet_str.clear();
// Copy the packet from m_bytes to packet_str expanding the
// run-length encoding in the process.
// Reserve enough byte for the most common case (no RLE used)
packet_str.reserve(m_bytes.length());
for (std::string::const_iterator c = m_bytes.begin() + content_start; c != m_bytes.begin() + content_start + content_length; ++c)
{
if (*c == '*')
{
// '*' indicates RLE. Next character will give us the
// repeat count and previous character is what is to be
// repeated.
char char_to_repeat = packet_str.back();
// Number of time the previous character is repeated
int repeat_count = *++c + 3 - ' ';
// We have the char_to_repeat and repeat_count. Now push
// it in the packet.
for (int i = 0; i < repeat_count; ++i)
packet_str.push_back(char_to_repeat);
}
else
{
packet_str.push_back(*c);
}
}
if (m_bytes[0] == '$')
{
assert (checksum_idx < m_bytes.size());
if (::isxdigit (m_bytes[checksum_idx+0]) ||
::isxdigit (m_bytes[checksum_idx+1]))
{
if (GetSendAcks ())
{
const char *packet_checksum_cstr = &m_bytes[checksum_idx];
char packet_checksum = strtol (packet_checksum_cstr, NULL, 16);
char actual_checksum = CalculcateChecksum (packet_str.c_str(), packet_str.size());
success = packet_checksum == actual_checksum;
if (!success)
{
if (log)
log->Printf ("error: checksum mismatch: %.*s expected 0x%2.2x, got 0x%2.2x",
(int)(total_length),
m_bytes.c_str(),
(uint8_t)packet_checksum,
(uint8_t)actual_checksum);
}
// Send the ack or nack if needed
if (!success)
SendNack();
else
SendAck();
}
}
else
{
success = false;
if (log)
log->Printf ("error: invalid checksum in packet: '%s'\n", m_bytes.c_str());
}
}
m_bytes.erase(0, total_length);
packet.SetFilePos(0);
return success;
}
}
packet.Clear();
return false;
}
const UnixSignalsSP &
PlatformRemoteGDBServer::GetRemoteUnixSignals()
{
if (!IsConnected())
return Platform::GetRemoteUnixSignals();
if (m_remote_signals_sp)
return m_remote_signals_sp;
// If packet not implemented or JSON failed to parse,
// we'll guess the signal set based on the remote architecture.
m_remote_signals_sp = UnixSignals::Create(GetRemoteSystemArchitecture());
const char packet[] = "jSignalsInfo";
StringExtractorGDBRemote response;
auto result = m_gdb_client.SendPacketAndWaitForResponse(
packet, strlen(packet), response, false);
if (result != decltype(result)::Success ||
response.GetResponseType() != response.eResponse)
return m_remote_signals_sp;
auto object_sp = StructuredData::ParseJSON(response.GetStringRef());
if (!object_sp || !object_sp->IsValid())
return m_remote_signals_sp;
auto array_sp = object_sp->GetAsArray();
if (!array_sp || !array_sp->IsValid())
return m_remote_signals_sp;
auto remote_signals_sp = std::make_shared<lldb_private::GDBRemoteSignals>();
bool done = array_sp->ForEach(
[&remote_signals_sp](StructuredData::Object *object) -> bool
{
if (!object || !object->IsValid())
return false;
auto dict = object->GetAsDictionary();
if (!dict || !dict->IsValid())
return false;
// Signal number and signal name are required.
int signo;
if (!dict->GetValueForKeyAsInteger("signo", signo))
return false;
std::string name;
if (!dict->GetValueForKeyAsString("name", name))
return false;
// We can live without short_name, description, etc.
std::string short_name{""};
auto object_sp = dict->GetValueForKey("short_name");
if (object_sp && object_sp->IsValid())
short_name = object_sp->GetStringValue();
bool suppress{false};
object_sp = dict->GetValueForKey("suppress");
if (object_sp && object_sp->IsValid())
suppress = object_sp->GetBooleanValue();
bool stop{false};
object_sp = dict->GetValueForKey("stop");
if (object_sp && object_sp->IsValid())
stop = object_sp->GetBooleanValue();
bool notify{false};
object_sp = dict->GetValueForKey("notify");
if (object_sp && object_sp->IsValid())
notify = object_sp->GetBooleanValue();
std::string description{""};
object_sp = dict->GetValueForKey("description");
if (object_sp && object_sp->IsValid())
description = object_sp->GetStringValue();
remote_signals_sp->AddSignal(signo,
name.c_str(),
short_name.c_str(),
suppress, stop, notify,
description.c_str());
return true;
});
if (done)
m_remote_signals_sp = std::move(remote_signals_sp);
return m_remote_signals_sp;
}
StateType GDBRemoteClientBase::SendContinuePacketAndWaitForResponse(
ContinueDelegate &delegate, const UnixSignals &signals,
llvm::StringRef payload, StringExtractorGDBRemote &response) {
Log *log(ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS));
response.Clear();
{
std::lock_guard<std::mutex> lock(m_mutex);
m_continue_packet = payload;
m_should_stop = false;
}
ContinueLock cont_lock(*this);
if (!cont_lock)
return eStateInvalid;
OnRunPacketSent(true);
for (;;) {
PacketResult read_result = ReadPacket(response, kInterruptTimeout, false);
switch (read_result) {
case PacketResult::ErrorReplyTimeout: {
std::lock_guard<std::mutex> lock(m_mutex);
if (m_async_count == 0)
continue;
if (steady_clock::now() >= m_interrupt_time + kInterruptTimeout)
return eStateInvalid;
}
case PacketResult::Success:
break;
default:
if (log)
log->Printf("GDBRemoteClientBase::%s () ReadPacket(...) => false",
__FUNCTION__);
return eStateInvalid;
}
if (response.Empty())
return eStateInvalid;
const char stop_type = response.GetChar();
if (log)
log->Printf("GDBRemoteClientBase::%s () got packet: %s", __FUNCTION__,
response.GetStringRef().c_str());
switch (stop_type) {
case 'W':
case 'X':
return eStateExited;
case 'E':
// ERROR
return eStateInvalid;
default:
if (log)
log->Printf("GDBRemoteClientBase::%s () unrecognized async packet",
__FUNCTION__);
return eStateInvalid;
case 'O': {
std::string inferior_stdout;
response.GetHexByteString(inferior_stdout);
delegate.HandleAsyncStdout(inferior_stdout);
break;
}
case 'A':
delegate.HandleAsyncMisc(
llvm::StringRef(response.GetStringRef()).substr(1));
break;
case 'J':
delegate.HandleAsyncStructuredDataPacket(response.GetStringRef());
break;
case 'T':
case 'S':
// Do this with the continue lock held.
const bool should_stop = ShouldStop(signals, response);
response.SetFilePos(0);
// The packet we should resume with. In the future
// we should check our thread list and "do the right thing"
// for new threads that show up while we stop and run async
// packets. Setting the packet to 'c' to continue all threads
// is the right thing to do 99.99% of the time because if a
// thread was single stepping, and we sent an interrupt, we
// will notice above that we didn't stop due to an interrupt
// but stopped due to stepping and we would _not_ continue.
// This packet may get modified by the async actions (e.g. to send a
// signal).
m_continue_packet = 'c';
cont_lock.unlock();
delegate.HandleStopReply();
if (should_stop)
return eStateStopped;
switch (cont_lock.lock()) {
case ContinueLock::LockResult::Success:
break;
case ContinueLock::LockResult::Failed:
return eStateInvalid;
case ContinueLock::LockResult::Cancelled:
return eStateStopped;
}
OnRunPacketSent(false);
break;
}
}
}
GDBRemoteCommunication::PacketResult
GDBRemoteCommunicationServerCommon::Handle_qEcho(
StringExtractorGDBRemote &packet) {
// Just echo back the exact same packet for qEcho...
return SendPacketNoLock(packet.GetStringRef());
}
//void *
//GDBRemoteCommunicationServer::AsyncThread (void *arg)
//{
// GDBRemoteCommunicationServer *server = (GDBRemoteCommunicationServer*) arg;
//
// LogSP log;// (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS));
// if (log)
// log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %i) thread starting...", __FUNCTION__, arg, process->GetID());
//
// StringExtractorGDBRemote packet;
//
// while ()
// {
// if (packet.
// }
//
// if (log)
// log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %i) thread exiting...", __FUNCTION__, arg, process->GetID());
//
// process->m_async_thread = LLDB_INVALID_HOST_THREAD;
// return NULL;
//}
//
bool
GDBRemoteCommunicationServer::GetPacketAndSendResponse (uint32_t timeout_usec,
Error &error,
bool &interrupt,
bool &quit)
{
StringExtractorGDBRemote packet;
if (WaitForPacketWithTimeoutMicroSeconds(packet, timeout_usec))
{
const StringExtractorGDBRemote::ServerPacketType packet_type = packet.GetServerPacketType ();
switch (packet_type)
{
case StringExtractorGDBRemote::eServerPacketType_nack:
case StringExtractorGDBRemote::eServerPacketType_ack:
break;
case StringExtractorGDBRemote::eServerPacketType_invalid:
error.SetErrorString("invalid packet");
quit = true;
break;
case StringExtractorGDBRemote::eServerPacketType_interrupt:
error.SetErrorString("interrupt received");
interrupt = true;
break;
case StringExtractorGDBRemote::eServerPacketType_unimplemented:
return SendUnimplementedResponse (packet.GetStringRef().c_str()) > 0;
case StringExtractorGDBRemote::eServerPacketType_A:
return Handle_A (packet);
case StringExtractorGDBRemote::eServerPacketType_qfProcessInfo:
return Handle_qfProcessInfo (packet);
case StringExtractorGDBRemote::eServerPacketType_qsProcessInfo:
return Handle_qsProcessInfo (packet);
case StringExtractorGDBRemote::eServerPacketType_qC:
return Handle_qC (packet);
case StringExtractorGDBRemote::eServerPacketType_qHostInfo:
return Handle_qHostInfo (packet);
case StringExtractorGDBRemote::eServerPacketType_qLaunchGDBServer:
return Handle_qLaunchGDBServer (packet);
case StringExtractorGDBRemote::eServerPacketType_qLaunchSuccess:
return Handle_qLaunchSuccess (packet);
case StringExtractorGDBRemote::eServerPacketType_qGroupName:
return Handle_qGroupName (packet);
case StringExtractorGDBRemote::eServerPacketType_qProcessInfoPID:
return Handle_qProcessInfoPID (packet);
case StringExtractorGDBRemote::eServerPacketType_qSpeedTest:
return Handle_qSpeedTest (packet);
case StringExtractorGDBRemote::eServerPacketType_qUserName:
return Handle_qUserName (packet);
case StringExtractorGDBRemote::eServerPacketType_QEnvironment:
return Handle_QEnvironment (packet);
case StringExtractorGDBRemote::eServerPacketType_QSetDisableASLR:
return Handle_QSetDisableASLR (packet);
case StringExtractorGDBRemote::eServerPacketType_QSetSTDIN:
return Handle_QSetSTDIN (packet);
case StringExtractorGDBRemote::eServerPacketType_QSetSTDOUT:
return Handle_QSetSTDOUT (packet);
case StringExtractorGDBRemote::eServerPacketType_QSetSTDERR:
return Handle_QSetSTDERR (packet);
case StringExtractorGDBRemote::eServerPacketType_QSetWorkingDir:
return Handle_QSetWorkingDir (packet);
case StringExtractorGDBRemote::eServerPacketType_QStartNoAckMode:
return Handle_QStartNoAckMode (packet);
}
return true;
}
else
{
if (!IsConnected())
error.SetErrorString("lost connection");
else
error.SetErrorString("timeout");
}
return false;
}
