artdaq  v2_03_00
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DataReceiverManager.cc
1 #include <chrono>
2 
3 #include "artdaq/DAQrate/DataReceiverManager.hh"
4 #include "artdaq/DAQdata/Globals.hh"
5 #include "artdaq/TransferPlugins/MakeTransferPlugin.hh"
6 
7 artdaq::DataReceiverManager::DataReceiverManager(const fhicl::ParameterSet& pset)
8  : stop_requested_(false)
9  , source_threads_()
10  , source_plugins_()
11  , enabled_sources_()
12  , suppressed_sources_()
13  , fragment_store_()
14  , recv_frag_count_()
15  , recv_frag_size_()
16  , recv_seq_count_()
17  , suppress_noisy_senders_(pset.get<bool>("auto_suppression_enabled",true))
18  , suppression_threshold_(pset.get<size_t>("max_receive_difference", 50))
19  , receive_timeout_(pset.get<size_t>("receive_timeout_usec", 100000))
20 {
21  TLOG_DEBUG("DataReceiverManager") << "Constructor" << TLOG_ENDL;
22  auto enabled_srcs = pset.get<std::vector<int>>("enabled_sources", std::vector<int>());
23  auto enabled_srcs_empty = enabled_srcs.size() == 0;
24  if (enabled_srcs_empty)
25  {
26  TLOG_INFO("DataReceiverManager") << "enabled_sources not specified, assuming all sources enabled." << TLOG_ENDL;
27  }
28  else
29  {
30  for (auto& s : enabled_srcs)
31  {
32  enabled_sources_.insert(s);
33  }
34  }
35 
36  auto srcs = pset.get<fhicl::ParameterSet>("sources", fhicl::ParameterSet());
37  for (auto& s : srcs.get_pset_names())
38  {
39  try
40  {
41  auto transfer = std::unique_ptr<TransferInterface>(MakeTransferPlugin(srcs, s,
43  auto source_rank = transfer->source_rank();
44  if (enabled_srcs_empty) enabled_sources_.insert( source_rank );
45  source_plugins_[ source_rank ] = std::move(transfer);
46  fragment_store_[ source_rank ];
47  }
48  catch (cet::exception ex)
49  {
50  TLOG_WARNING("DataReceiverManager") << "cet::exception caught while setting up source " << s << ": " << ex.what() << TLOG_ENDL;
51  }
52  catch (std::exception ex)
53  {
54  TLOG_WARNING("DataReceiverManager") << "std::exception caught while setting up source " << s << ": " << ex.what() << TLOG_ENDL;
55  }
56  catch (...)
57  {
58  TLOG_WARNING("DataReceiverManager") << "Non-cet exception caught while setting up source " << s << "." << TLOG_ENDL;
59  }
60  }
61  if (srcs.get_pset_names().size() == 0)
62  {
63  TLOG_ERROR("DataReceiverManager") << "No sources configured!" << TLOG_ENDL;
64  }
65 }
66 
68 {
69  TLOG_DEBUG("DataReceiverManager") << "Destructor" << TLOG_ENDL;
70  TRACE(5, "~DataReceiverManager: BEGIN: Setting stop_requested to true, frags=%zu, bytes=%zu", count(), byteCount());
71  stop_requested_ = true;
72 
73  TRACE(5, "~DataReceiverManager: Notifying all threads");
74  output_cv_.notify_all();
75 
76  TRACE(5, "~DataReceiverManager: Joining all threads");
77  for (auto& s : source_threads_)
78  {
79  auto& thread = s.second;
80  if (thread.joinable()) thread.join();
81  }
82  TRACE(5, "~DataReceiverManager: DONE");
83 }
84 
85 bool artdaq::DataReceiverManager::fragments_ready_() const
86 {
87  return get_next_source_() != -1;
88 }
89 
90 int artdaq::DataReceiverManager::get_next_source_() const
91 {
92  //std::unique_lock<std::mutex> lck(fragment_store_mutex_);
93  for (auto& it : fragment_store_)
94  {
95  if (!enabled_sources_.count(it.first) || suppressed_sources_.count(it.first)) continue;
96  if (!it.second.empty()) return it.first;
97  }
98  return -1;
99 }
100 
102 {
103  suppressed_sources_.clear();
104  output_cv_.notify_all();
105 }
106 
108 {
109  suppressed_sources_.insert(source);
110 }
111 
112 void artdaq::DataReceiverManager::reject_fragment(int source_rank, FragmentPtr frag)
113 {
114  if (frag == nullptr) return;
115  suppress_source(source_rank);
116  fragment_store_[source_rank].emplace_front(std::move(frag));
117 }
118 
120 {
121  for (auto& source : source_plugins_)
122  {
123  auto& rank = source.first;
124  if (enabled_sources_.count(rank))
125  {
126  source_threads_[rank] = std::thread(&DataReceiverManager::runReceiver_, this, rank);
127  }
128  }
129 }
130 
131 artdaq::FragmentPtr artdaq::DataReceiverManager::recvFragment(int& rank, size_t timeout_usec)
132 {
133  TRACE(5, "DataReceiverManager::recvFragment entered tmo=%zu us", timeout_usec);
134 
135  if (timeout_usec == 0) timeout_usec = 1000000;
136 
137  auto ready = fragments_ready_();
138  size_t waited = 0;
139  auto wait_amount = timeout_usec / 1000 > 1000 ? timeout_usec / 1000 : 1000;
140  TRACE(5, "DataReceiverManager::recvFragment fragment_ready_=%d before wait", ready);
141  while (!ready && waited < timeout_usec)
142  {
143  {
144  std::unique_lock<std::mutex> lck(input_cv_mutex_);
145  input_cv_.wait_for(lck, std::chrono::microseconds(wait_amount));
146  }
147  waited += wait_amount;
148  ready = fragments_ready_();
149  }
150  TRACE(5, "DataReceiverManager::recvFragment fragment_ready_=%d after waited=%zu", ready, waited);
151  if (!ready)
152  {
153  TRACE(5, "DataReceiverManager::recvFragment: No fragments ready, returning empty");
155  return std::unique_ptr<Fragment>{};
156  }
157 
158  int current_source = get_next_source_();
159  FragmentPtr current_fragment = fragment_store_[current_source].front();
160  output_cv_.notify_all();
161  rank = current_source;
162 
163  if (current_fragment != nullptr)
164  TRACE(5, "DataReceiverManager::recvFragment: Done rank=%d, fragment size=%zu words, seqId=%zu", rank, current_fragment->size(), current_fragment->sequenceID());
165  return std::move(current_fragment);
166 }
167 
168 void artdaq::DataReceiverManager::runReceiver_(int source_rank)
169 {
170  while (!stop_requested_ && enabled_sources_.count(source_rank))
171  {
172  TRACE(16, "DataReceiverManager::runReceiver_: Begin loop");
173  auto is_suppressed = (suppress_noisy_senders_ && recv_seq_count_.slotCount(source_rank) > suppression_threshold_ + recv_seq_count_.minCount()) || suppressed_sources_.count(source_rank) > 0;
174  while (!stop_requested_ && is_suppressed)
175  {
176  TRACE(6, "DataReceiverManager::runReceiver_: Suppressing receiver rank %d", source_rank);
177  if (!is_suppressed) input_cv_.notify_all();
178  else
179  {
180  std::unique_lock<std::mutex> lck(output_cv_mutex_);
181  output_cv_.wait_for(lck, std::chrono::seconds(1));
182  }
183  is_suppressed = (suppress_noisy_senders_ && recv_seq_count_.slotCount(source_rank) > suppression_threshold_ + recv_seq_count_.minCount()) || suppressed_sources_.count(source_rank) > 0;
184  }
185  if (stop_requested_) return;
186 
187  auto start_time = std::chrono::steady_clock::now();
188  TRACE(16, "DataReceiverManager::runReceiver_: Calling receiveFragment");
189  auto fragment = std::unique_ptr<Fragment>(new Fragment());
190  auto ret = source_plugins_[source_rank]->receiveFragment(*fragment, receive_timeout_);
191  TRACE(16, "DataReceiverManager::runReceiver_: Done with receiveFragment, ret=%d (should be %d)", ret, source_rank);
192 
193  if (ret != source_rank) continue; // Receive timeout or other oddness
194 
195  recv_frag_count_.incSlot(source_rank);
196  recv_frag_size_.incSlot(source_rank, fragment->size() * sizeof(RawDataType));
197  recv_seq_count_.setSlot(source_rank, fragment->sequenceID());
198 
199  bool endOfData = fragment->type() == artdaq::Fragment::EndOfDataFragmentType;
200 
201  if (metricMan)
202  {//&& recv_frag_count_.slotCount(source_rank) % 100 == 0) {
203  TRACE(6, "DataReceiverManager::runReceiver_: Sending receive stats");
204  auto delta_t = std::chrono::duration_cast<std::chrono::duration<double, std::ratio<1>>>(std::chrono::steady_clock::now() - start_time).count();
205  metricMan->sendMetric("Data Receive Time From Rank " + std::to_string(source_rank), delta_t, "s", 1);
206  metricMan->sendMetric("Data Receive Size From Rank " + std::to_string(source_rank), static_cast<unsigned long>(fragment->size() * sizeof(RawDataType)), "B", 1);
207  metricMan->sendMetric("Data Receive Rate From Rank " + std::to_string(source_rank), fragment->size() * sizeof(RawDataType) / delta_t, "B/s", 1);
208  }
209 
210  if (stop_requested_) return;
211 
212  fragment_store_[source_rank].emplace_back(std::move(fragment));
213  input_cv_.notify_all();
214 
215  if (endOfData)
216  {
217  return;
218  }
219  }
220 }
void unsuppressAll()
Re-enable all sources.
void reject_fragment(int source_rank, FragmentPtr frag)
Place the given Fragment back in the FragmentStore (Called when the EventStore is full) ...
static const int RECV_TIMEOUT
Value to be returned upon receive timeout. Because receivers otherwise return rank, this is also the limit on the number of ranks that artdaq currently supports.
This TransferInterface is a Receiver.
std::unique_ptr< artdaq::TransferInterface > MakeTransferPlugin(const fhicl::ParameterSet &pset, std::string plugin_label, TransferInterface::Role role)
Load a TransferInterface plugin.
FragmentPtr recvFragment(int &rank, size_t timeout_usec=0)
Receive a Fragment.
DataReceiverManager(const fhicl::ParameterSet &ps)
DataReceiverManager Constructor.
virtual ~DataReceiverManager()
DataReceiverManager Destructor.
void suppress_source(int source)
Suppress the given source.
void start_threads()
Start receiver threads for all enabled sources.