// Always called from recv and implements specific
// logic for deserializing a list command received via Thrift.
void CmdList::recvImpl(DebuggerThriftBuffer &thrift) {
DebuggerCommand::recvImpl(thrift);
thrift.read(m_file);
thrift.read(m_line1);
thrift.read(m_line2);
thrift.read(m_code);
}
void CmdMachine::recvImpl(DebuggerThriftBuffer &thrift) {
DebuggerCommand::recvImpl(thrift);
thrift.read(m_sandboxes);
thrift.read(m_rpcConfig);
thrift.read(m_force);
thrift.read(m_succeed);
}
void CmdPrint::recvImpl(DebuggerThriftBuffer &thrift) {
DebuggerCommand::recvImpl(thrift);
thrift.read(m_ret);
thrift.read(m_output);
thrift.read(m_frame);
thrift.read(m_bypassAccessCheck);
thrift.read(m_printLevel);
}
void InstPointInfo::recvImpl(DebuggerThriftBuffer &thrift) {
TRACE(2, "InstPointInfo::recvImpl\n");
thrift.read(m_locType);
thrift.read(m_valid);
thrift.read(m_file);
thrift.read(m_line);
thrift.read(m_func);
thrift.read(m_desc);
thrift.read(m_code);
}
void CmdWhere::recvImpl(DebuggerThriftBuffer &thrift) {
DebuggerCommand::recvImpl(thrift);
{
String sdata;
thrift.read(sdata);
if (DebuggerWireHelpers::WireUnserialize(sdata, m_stacktrace) !=
DebuggerWireHelpers::NoError) {
m_stacktrace = null_array;
m_wireError = sdata;
}
}
thrift.read(m_stackArgs);
}
void CmdVariable::recvImpl(DebuggerThriftBuffer &thrift) {
DebuggerCommand::recvImpl(thrift);
thrift.read(m_frame);
{
String sdata;
thrift.read(sdata);
if (DebuggerWireHelpers::WireUnserialize(sdata, m_variables) !=
DebuggerWireHelpers::NoError) {
m_variables = null_array;
m_wireError = sdata;
}
}
thrift.read(m_global);
}
void CmdEval::recvImpl(DebuggerThriftBuffer &thrift) {
DebuggerCommand::recvImpl(thrift);
thrift.read(m_output);
thrift.read(m_frame);
thrift.read(m_bypassAccessCheck);
if (this->m_version == 2) thrift.read(m_failed);
// Old senders will set version to 0. A new sender sets it to 1
// and then expects an answer using version 2.
// Note that version 1 is the same format as version 0, so old
// receivers will not break when receiving a version 1 message.
// This code ensures that version 2 messages are received only
// by receivers that previously sent a version 1 message (thus
// indicating their ability to deal with version 2 messages).
if (this->m_version == 1) this->m_version = 2;
}
void InstPointInfo::RecvImpl(InstPointInfoPtrVec& ips,
DebuggerThriftBuffer &thrift) {
TRACE(2, "InstPointInfo::RecvImpl\n");
int16_t size;
thrift.read(size);
ips.resize(size);
for (int i = 0; i < size; i++) {
InstPointInfoPtr ipi(new InstPointInfo());
ipi->recvImpl(thrift);
ips[i] = ipi;
}
}
void CmdVariable::recvImpl(DebuggerThriftBuffer &thrift) {
DebuggerCommand::recvImpl(thrift);
thrift.read(m_frame);
{
String sdata;
thrift.read(sdata);
auto error = DebuggerWireHelpers::WireUnserialize(sdata, m_variables);
if (error != DebuggerWireHelpers::NoError) {
m_variables = null_array;
if (error != DebuggerWireHelpers::HitLimit || m_version == 0) {
// Unexpected error. Log it.
m_wireError = sdata;
}
}
}
thrift.read(m_global);
if (m_version == 2) {
thrift.read(m_varName);
thrift.read(m_filter);
}
}
void CmdPrint::recvImpl(DebuggerThriftBuffer &thrift) {
DebuggerCommand::recvImpl(thrift);
{
String sdata;
thrift.read(sdata);
int error = DebuggerWireHelpers::WireUnserialize(sdata, m_ret);
if (error) {
m_ret = null;
}
if (error == DebuggerWireHelpers::HitLimit) {
m_wireError = "Hit unserialization limit. "
"Try with smaller print level";
}
}
thrift.read(m_output);
thrift.read(m_frame);
thrift.read(m_bypassAccessCheck);
thrift.read(m_printLevel);
thrift.read(m_noBreak);
}
void CmdRun::recvImpl(DebuggerThriftBuffer &thrift) {
TRACE(2, "CmdRun::recvImpl\n");
DebuggerCommand::recvImpl(thrift);
m_args = std::make_shared<std::vector<std::string>>();
thrift.read(*m_args);
}
void CmdThread::recvImpl(DebuggerThriftBuffer &thrift) {
DebuggerCommand::recvImpl(thrift);
thrift.read(m_out);
thrift.read(m_threads);
}
void CmdSignal::recvImpl(DebuggerThriftBuffer &thrift) {
DebuggerCommand::recvImpl(thrift);
thrift.read(m_signum);
}
void CmdGlobal::recvImpl(DebuggerThriftBuffer &thrift) {
DebuggerCommand::recvImpl(thrift);
thrift.read(m_globals);
if (m_version == 1) m_version = 2;
}
void CmdVariable::recvImpl(DebuggerThriftBuffer &thrift) {
DebuggerCommand::recvImpl(thrift);
thrift.read(m_frame);
thrift.read(m_variables);
thrift.read(m_global);
}
void CmdInstrument::recvImpl(DebuggerThriftBuffer &thrift) {
DebuggerCommand::recvImpl(thrift);
thrift.read(m_type);
thrift.read(m_enabled);
InstPointInfo::RecvImpl(m_ips, thrift);
}
void CmdInterrupt::recvImpl(DebuggerThriftBuffer &thrift) {
DebuggerCommand::recvImpl(thrift);
thrift.read(m_interrupt);
thrift.read(m_program);
thrift.read(m_errorMsg);
thrift.read(m_threadId);
thrift.read(m_pendingJump);
m_bpi = BreakPointInfoPtr(new BreakPointInfo());
bool site; thrift.read(site);
if (site) {
thrift.read(m_bpi->m_file);
thrift.read(m_bpi->m_line1);
thrift.read(m_bpi->m_char1);
thrift.read(m_bpi->m_line2);
thrift.read(m_bpi->m_char2);
DFunctionInfoPtr func(new DFunctionInfo());
thrift.read(func->m_namespace);
thrift.read(func->m_class);
thrift.read(func->m_function);
m_bpi->m_funcs.push_back(func);
thrift.read(m_bpi->m_exceptionClass);
thrift.read(m_bpi->m_exceptionObject);
}
BreakPointInfo::RecvImpl(m_matched, thrift);
}
void CmdUser::recvImpl(DebuggerThriftBuffer &thrift) {
DebuggerCommand::recvImpl(thrift);
thrift.read(m_cmd);
}
void CmdWhere::recvImpl(DebuggerThriftBuffer &thrift) {
DebuggerCommand::recvImpl(thrift);
thrift.read(m_stacktrace);
}
bool DebuggerCommand::Receive(DebuggerThriftBuffer &thrift,
DebuggerCommandPtr &cmd, const char *caller) {
cmd.reset();
struct pollfd fds[1];
fds[0].fd = thrift.getSocket()->fd();
fds[0].events = POLLIN|POLLERR|POLLHUP;
int ret = poll(fds, 1, POLLING_SECONDS * 1000);
if (ret == 0) {
return false;
}
if (ret == -1 || !(fds[0].revents & POLLIN)) {
return errno != EINTR; // treat signals as timeouts
}
int32 type;
string clsname;
try {
thrift.reset(true);
thrift.read(type);
thrift.read(clsname);
} catch (...) {
Logger::Verbose("%s => DebuggerCommand::Receive(): socket error", caller);
return true;
}
// not all commands are here, as not all commands need to be sent over wire
switch (type) {
case KindOfBreak : cmd = DebuggerCommandPtr(new CmdBreak ()); break;
case KindOfContinue : cmd = DebuggerCommandPtr(new CmdContinue ()); break;
case KindOfDown : cmd = DebuggerCommandPtr(new CmdDown ()); break;
case KindOfException: cmd = DebuggerCommandPtr(new CmdException()); break;
case KindOfFrame : cmd = DebuggerCommandPtr(new CmdFrame ()); break;
case KindOfGlobal : cmd = DebuggerCommandPtr(new CmdGlobal ()); break;
case KindOfInfo : cmd = DebuggerCommandPtr(new CmdInfo ()); break;
case KindOfJump : cmd = DebuggerCommandPtr(new CmdJump ()); break;
case KindOfConstant : cmd = DebuggerCommandPtr(new CmdConstant ()); break;
case KindOfList : cmd = DebuggerCommandPtr(new CmdList ()); break;
case KindOfMachine : cmd = DebuggerCommandPtr(new CmdMachine ()); break;
case KindOfNext : cmd = DebuggerCommandPtr(new CmdNext ()); break;
case KindOfOut : cmd = DebuggerCommandPtr(new CmdOut ()); break;
case KindOfPrint : cmd = DebuggerCommandPtr(new CmdPrint ()); break;
case KindOfQuit : cmd = DebuggerCommandPtr(new CmdQuit ()); break;
case KindOfRun : cmd = DebuggerCommandPtr(new CmdRun ()); break;
case KindOfStep : cmd = DebuggerCommandPtr(new CmdStep ()); break;
case KindOfThread : cmd = DebuggerCommandPtr(new CmdThread ()); break;
case KindOfUp : cmd = DebuggerCommandPtr(new CmdUp ()); break;
case KindOfVariable : cmd = DebuggerCommandPtr(new CmdVariable ()); break;
case KindOfWhere : cmd = DebuggerCommandPtr(new CmdWhere ()); break;
case KindOfUser : cmd = DebuggerCommandPtr(new CmdUser ()); break;
case KindOfEval : cmd = DebuggerCommandPtr(new CmdEval ()); break;
case KindOfInterrupt: cmd = DebuggerCommandPtr(new CmdInterrupt()); break;
case KindOfSignal : cmd = DebuggerCommandPtr(new CmdSignal ()); break;
case KindOfShell : cmd = DebuggerCommandPtr(new CmdShell ()); break;
case KindOfExtended: {
ASSERT(!clsname.empty());
cmd = CmdExtended::CreateExtendedCommand(clsname);
ASSERT(cmd);
break;
}
default:
ASSERT(false);
Logger::Error("%s => DebuggerCommand::Receive(): bad cmd type: %d",
caller, type);
return true;
}
if (!cmd->recv(thrift)) {
cmd.reset();
}
return true;
}
void DebuggerCommand::recvImpl(DebuggerThriftBuffer &thrift) {
thrift.read(m_body);
thrift.read(m_version);
}
void CmdFlowControl::recvImpl(DebuggerThriftBuffer &thrift) {
DebuggerCommand::recvImpl(thrift);
thrift.read(m_count);
}
void CmdInterrupt::recvImpl(DebuggerThriftBuffer &thrift) {
DebuggerCommand::recvImpl(thrift);
thrift.read(m_interrupt);
thrift.read(m_program);
thrift.read(m_errorMsg);
thrift.read(m_threadId);
// Used to be m_pendingJump, but that's been removed. Read a dummy bool until
// we rev the protocol.
bool dummy;
thrift.read(dummy);
m_bpi = std::make_shared<BreakPointInfo>();
bool site; thrift.read(site);
if (site) {
thrift.read(m_bpi->m_file);
thrift.read(m_bpi->m_line1);
thrift.read(m_bpi->m_char1);
thrift.read(m_bpi->m_line2);
thrift.read(m_bpi->m_char2);
auto func = std::make_shared<DFunctionInfo>();
thrift.read(func->m_namespace);
thrift.read(func->m_class);
thrift.read(func->m_function);
m_bpi->m_funcs.push_back(func);
thrift.read(m_bpi->m_exceptionClass);
thrift.read(m_bpi->m_exceptionObject);
}
BreakPointInfo::RecvImpl(0, m_matched, thrift);
}
void CmdShell::recvImpl(DebuggerThriftBuffer &thrift) {
DebuggerCommand::recvImpl(thrift);
thrift.read(m_args);
thrift.read(m_out);
}
void CmdExample::recvImpl(DebuggerThriftBuffer &thrift) {
CmdExtended::recvImpl(thrift);
thrift.read(m_input);
thrift.read(m_output);
}
void CmdRun::recvImpl(DebuggerThriftBuffer &thrift) {
TRACE(2, "CmdRun::recvImpl\n");
DebuggerCommand::recvImpl(thrift);
m_args = StringVecPtr(new StringVec());
thrift.read(*m_args);
}
void CmdInternalTesting::recvImpl(DebuggerThriftBuffer &thrift) {
DebuggerCommand::recvImpl(thrift);
thrift.read(m_arg);
thrift.read(m_unused);
}
void CmdExtension::recvImpl(DebuggerThriftBuffer &thrift) {
CmdExtended::recvImpl(thrift);
thrift.read(m_args);
thrift.read(m_out);
thrift.read(m_err);
}
void CmdHeaptrace::recvImpl(DebuggerThriftBuffer &thrift) {
DebuggerCommand::recvImpl(thrift);
thrift.read(m_accum.typesMap);
thrift.read(m_accum.sizeMap);
thrift.read(m_accum.adjacencyList);
}
// Returns false on timeout, true when data has been read even if that data
// didn't form a usable command. Is there is no usable command, cmd is null.
bool DebuggerCommand::Receive(DebuggerThriftBuffer &thrift,
DebuggerCommandPtr &cmd, const char *caller) {
TRACE(5, "DebuggerCommand::Receive\n");
cmd.reset();
struct pollfd fds[1];
fds[0].fd = thrift.getSocket()->fd();
fds[0].events = POLLIN|POLLERR|POLLHUP;
int ret = poll(fds, 1, POLLING_SECONDS * 1000);
if (ret == 0) return false; // Timeout
if (ret == -1) {
auto errorNumber = errno; // Just in case TRACE_RB changes errno
TRACE_RB(1, "DebuggerCommand::Receive: error %d\n", errorNumber);
return errorNumber != EINTR; // Treat signals as timeouts
}
// If we don't have any data to read (POLLIN) then we're done. If we
// do have data we'll attempt to read and decode it below, even if
// there are other error bits set.
if (!(fds[0].revents & POLLIN)) {
TRACE_RB(1, "DebuggerCommand::Receive: revents %d\n", fds[0].revents);
return true;
}
int32_t type;
std::string clsname;
try {
thrift.reset(true);
thrift.read(type);
thrift.read(clsname);
} catch (...) {
// Note: this error case is difficult to test. But, it's exactly the same
// as the error noted below. Make sure to keep handling of both of these
// errors in sync.
TRACE_RB(1, "%s: socket error receiving command", caller);
return true;
}
TRACE(1, "DebuggerCommand::Receive: got cmd of type %d\n", type);
// not all commands are here, as not all commands need to be sent over wire
switch (type) {
case KindOfBreak : cmd = DebuggerCommandPtr(new CmdBreak ()); break;
case KindOfContinue : cmd = DebuggerCommandPtr(new CmdContinue ()); break;
case KindOfDown : cmd = DebuggerCommandPtr(new CmdDown ()); break;
case KindOfException: cmd = DebuggerCommandPtr(new CmdException()); break;
case KindOfFrame : cmd = DebuggerCommandPtr(new CmdFrame ()); break;
case KindOfGlobal : cmd = DebuggerCommandPtr(new CmdGlobal ()); break;
case KindOfInfo : cmd = DebuggerCommandPtr(new CmdInfo ()); break;
case KindOfConstant : cmd = DebuggerCommandPtr(new CmdConstant ()); break;
case KindOfList : cmd = DebuggerCommandPtr(new CmdList ()); break;
case KindOfMachine : cmd = DebuggerCommandPtr(new CmdMachine ()); break;
case KindOfNext : cmd = DebuggerCommandPtr(new CmdNext ()); break;
case KindOfOut : cmd = DebuggerCommandPtr(new CmdOut ()); break;
case KindOfPrint : cmd = DebuggerCommandPtr(new CmdPrint ()); break;
case KindOfQuit : cmd = DebuggerCommandPtr(new CmdQuit ()); break;
case KindOfRun : cmd = DebuggerCommandPtr(new CmdRun ()); break;
case KindOfStep : cmd = DebuggerCommandPtr(new CmdStep ()); break;
case KindOfThread : cmd = DebuggerCommandPtr(new CmdThread ()); break;
case KindOfUp : cmd = DebuggerCommandPtr(new CmdUp ()); break;
case KindOfVariable : cmd = DebuggerCommandPtr(new CmdVariable ()); break;
case KindOfVariableAsync :
cmd = DebuggerCommandPtr(new CmdVariable (KindOfVariableAsync)); break;
case KindOfWhere : cmd = DebuggerCommandPtr(new CmdWhere ()); break;
case KindOfWhereAsync:
cmd = DebuggerCommandPtr(new CmdWhere(KindOfWhereAsync)); break;
case KindOfEval : cmd = DebuggerCommandPtr(new CmdEval ()); break;
case KindOfInterrupt: cmd = DebuggerCommandPtr(new CmdInterrupt()); break;
case KindOfSignal : cmd = DebuggerCommandPtr(new CmdSignal ()); break;
case KindOfShell : cmd = DebuggerCommandPtr(new CmdShell ()); break;
case KindOfInternalTesting :
cmd = DebuggerCommandPtr(new CmdInternalTesting()); break;
case KindOfExtended: {
assert(!clsname.empty());
cmd = CmdExtended::CreateExtendedCommand(clsname);
assert(cmd);
break;
}
default:
TRACE_RB(1, "%s: received bad cmd type: %d", caller, type);
cmd.reset();
return true;
}
if (!cmd->recv(thrift)) {
// Note: this error case is easily tested, and we have a test for it. But
// the error case noted above is quite difficult to test. Keep these two
// in sync.
TRACE_RB(1, "%s: socket error receiving command", caller);
cmd.reset();
}
return true;
}
