lldb::thread_result_t Communication::ReadThread(lldb::thread_arg_t p) {
Communication *comm = (Communication *)p;
Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_COMMUNICATION));
if (log)
log->Printf("%p Communication::ReadThread () thread starting...", p);
uint8_t buf[1024];
Status error;
ConnectionStatus status = eConnectionStatusSuccess;
bool done = false;
while (!done && comm->m_read_thread_enabled) {
size_t bytes_read = comm->ReadFromConnection(
buf, sizeof(buf), std::chrono::seconds(5), status, &error);
if (bytes_read > 0)
comm->AppendBytesToCache(buf, bytes_read, true, status);
else if ((bytes_read == 0) && status == eConnectionStatusEndOfFile) {
if (comm->GetCloseOnEOF())
comm->Disconnect();
comm->AppendBytesToCache(buf, bytes_read, true, status);
}
switch (status) {
case eConnectionStatusSuccess:
break;
case eConnectionStatusEndOfFile:
done = true;
break;
case eConnectionStatusError: // Check GetError() for details
if (error.GetType() == eErrorTypePOSIX && error.GetError() == EIO) {
// EIO on a pipe is usually caused by remote shutdown
comm->Disconnect();
done = true;
}
if (error.Fail())
LLDB_LOG(log, "error: {0}, status = {1}", error,
Communication::ConnectionStatusAsCString(status));
break;
case eConnectionStatusInterrupted: // Synchronization signal from
// SynchronizeWithReadThread()
// The connection returns eConnectionStatusInterrupted only when there is
// no input pending to be read, so we can signal that.
comm->BroadcastEvent(eBroadcastBitNoMorePendingInput);
break;
case eConnectionStatusNoConnection: // No connection
case eConnectionStatusLostConnection: // Lost connection while connected to
// a valid connection
done = true;
LLVM_FALLTHROUGH;
case eConnectionStatusTimedOut: // Request timed out
if (error.Fail())
LLDB_LOG(log, "error: {0}, status = {1}", error,
Communication::ConnectionStatusAsCString(status));
break;
}
}
log = lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_COMMUNICATION);
if (log)
log->Printf("%p Communication::ReadThread () thread exiting...", p);
comm->m_read_thread_did_exit = true;
// Let clients know that this thread is exiting
comm->BroadcastEvent(eBroadcastBitNoMorePendingInput);
comm->BroadcastEvent(eBroadcastBitReadThreadDidExit);
return NULL;
}
