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#include "DTHFakeReader.h"
#include "DataFormats/FEDRawData/interface/FEDHeader.h"
#include "DataFormats/FEDRawData/interface/FEDTrailer.h"
#include "DataFormats/FEDRawData/interface/FEDNumbering.h"
#include "DataFormats/FEDRawData/interface/SLinkRocketHeaders.h"
#include "DataFormats/TCDS/interface/TCDSRaw.h"
//#include "EventFilter/Utilities/interface/GlobalEventNumber.h"
#include "EventFilter/Utilities/interface/crc32c.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "CLHEP/Random/RandGauss.h"
#include <cmath>
#include <sys/time.h>
#include <cstring>
#include <cstdlib>
#include <chrono>
//using namespace edm;
namespace evf {
constexpr unsigned minOrbitBx = 1;
constexpr unsigned maxOrbitBx = 2464;
constexpr unsigned avgEventsPerOrbit = 70;
//constexpr unsigned h_size_ = 8;//for SLink FEDs
//constexpr unsigned t_size_ = 8;
constexpr unsigned h_size_ = sizeof(SLinkRocketHeader_v3);
constexpr unsigned t_size_ = sizeof(SLinkRocketTrailer_v3);
constexpr double rndFactor = (maxOrbitBx - minOrbitBx + 1) / (double(avgEventsPerOrbit) * RAND_MAX);
DTHFakeReader::DTHFakeReader(const edm::ParameterSet& pset)
: fillRandom_(pset.getUntrackedParameter<bool>("fillRandom", false)),
meansize_(pset.getUntrackedParameter<unsigned int>("meanSize", 1024)),
width_(pset.getUntrackedParameter<unsigned int>("width", 1024)),
injected_errors_per_million_events_(pset.getUntrackedParameter<unsigned int>("injectErrPpm", 0)),
sourceIdList_(
pset.getUntrackedParameter<std::vector<unsigned int>>("sourceIdList", std::vector<unsigned int>())),
modulo_error_events_(injected_errors_per_million_events_ ? 1000000 / injected_errors_per_million_events_
: 0xffffffff) {
if (fillRandom_) {
//intialize random seed
auto time_count =
static_cast<long unsigned int>(std::chrono::high_resolution_clock::now().time_since_epoch().count());
std::srand(time_count & 0xffffffff);
}
produces<RawDataBuffer>();
}
void DTHFakeReader::fillRawData(edm::Event& e, RawDataBuffer*& data) {
// a null pointer is passed, need to allocate the fed collection (reusing it as container)
//auto ls = e.luminosityBlock();
//this will be used as orbit counter
edm::EventNumber_t orbitId = e.id().event();
//generate eventID. Orbits start from 0 or 1?
std::vector<uint64_t> eventIdList_;
std::map<unsigned int, std::map<uint64_t, uint32_t>> randFedSizes;
for (auto sourceId : sourceIdList_) {
randFedSizes[sourceId] = std::map<uint64_t, uint32_t>();
}
uint32_t totSize = 0;
//randomize which orbit was accepted
for (unsigned i = minOrbitBx; i <= maxOrbitBx; i++) {
if ((std::rand() * rndFactor) < 1) {
uint64_t eventId = orbitId * maxOrbitBx + i;
eventIdList_.push_back(eventId);
for (auto sourceId : sourceIdList_) {
float logsiz = CLHEP::RandGauss::shoot(std::log(meansize_), std::log(meansize_) - std::log(width_ / 2.));
size_t size = int(std::exp(logsiz));
size -= size % 16; // all blocks aligned to 128 bit words (with header+trailer being 16, this remains valid)
if (!size)
size = 16;
randFedSizes[sourceId][eventId] = size;
}
}
}
//calculate buffer size and create it
for (auto sourceId : sourceIdList_) {
auto size = sizeof(DTHOrbitHeader_v1);
for (auto eventId : eventIdList_)
size += randFedSizes[sourceId][eventId] + h_size_ + t_size_ + sizeof(DTHFragmentTrailer_v1);
totSize += size;
}
data = new RawDataBuffer(totSize);
for (auto sourceId : sourceIdList_) {
auto size = sizeof(DTHOrbitHeader_v1);
for (auto eventId : eventIdList_)
size += randFedSizes[sourceId][eventId] + h_size_ + t_size_ + sizeof(DTHFragmentTrailer_v1);
unsigned char* feddata = data->addSource(sourceId, nullptr, size);
uint64_t fragments_size_bytes = sizeof(DTHOrbitHeader_v1);
//uint32_t runningChecksum = 0xffffffffU;
uint32_t runningChecksum = 0;
for (auto eventId : eventIdList_) {
unsigned char* fedaddr = feddata + fragments_size_bytes;
fragments_size_bytes +=
fillSLRFED(fedaddr, sourceId, eventId, orbitId, randFedSizes[sourceId][eventId], runningChecksum);
}
//in place construction
new (static_cast<void*>(feddata)) DTHOrbitHeader_v1(sourceId,
e.id().run(),
orbitId,
eventIdList_.size(),
fragments_size_bytes >> evf::DTH_WORD_NUM_BYTES_SHIFT,
0,
runningChecksum);
}
}
void DTHFakeReader::produce(edm::Event& e, edm::EventSetup const& es) {
edm::Handle<RawDataBuffer> rawdata;
RawDataBuffer* fedcoll = nullptr;
fillRawData(e, fedcoll);
std::unique_ptr<RawDataBuffer> bare_product(fedcoll);
e.put(std::move(bare_product));
}
uint32_t DTHFakeReader::fillSLRFED(unsigned char* buf,
const uint32_t sourceId,
edm::EventNumber_t eventId,
const uint32_t orbitId,
uint32_t size,
uint32_t& accum_crc32c) {
// Generate size...
const unsigned h_size_ = sizeof(SLinkRocketHeader_v3);
const unsigned t_size_ = sizeof(SLinkRocketTrailer_v3);
uint32_t totsize = size + h_size_ + t_size_ + sizeof(DTHFragmentTrailer_v1);
const unsigned fragsize = size + h_size_ + t_size_;
//Fill SLinkRocket header
uint8_t emu_status = 2; //set 2 indicating fragment generated by DTH (emulator)
uint16_t l1a_types = 1; //set provisionally to 1, to be revised later
uint8_t l1a_phys = 0;
new ((void*)buf) SLinkRocketHeader_v3(sourceId, l1a_types, l1a_phys, emu_status, eventId);
// Payload = all 0s or random
if (fillRandom_) {
//fill FED with random values
size_t size_ui = size - size % sizeof(unsigned int);
for (size_t i = 0; i < size_ui; i += sizeof(unsigned int)) {
*((unsigned int*)(buf + h_size_ + i)) = (unsigned int)std::rand();
}
//remainder
for (size_t i = size_ui; i < size; i++) {
*(buf + h_size_ + i) = std::rand() & 0xff;
}
}
//Fill SLinkRocket trailer
uint16_t crc = 0; // FIXME : get CRC16
uint16_t bxid = 0;
uint8_t status = 0;
//size is in bytes, it will be converted by constructor
new ((void*)(buf + h_size_ + size))
SLinkRocketTrailer_v3(status, crc, orbitId, bxid, fragsize >> evf::SLR_WORD_NUM_BYTES_SHIFT, crc);
//fill DTH fragment trailer
void* dthTrailerAddr = buf + fragsize;
new (dthTrailerAddr) DTHFragmentTrailer_v1(0, fragsize >> evf::DTH_WORD_NUM_BYTES_SHIFT, eventId, crc);
//accumulate crc32 checksum
accum_crc32c = crc32c(accum_crc32c, (const uint8_t*)buf, totsize);
return totsize;
}
void DTHFakeReader::beginLuminosityBlock(edm::LuminosityBlock const& iL, edm::EventSetup const& iE) {
std::cout << "DTHFakeReader begin Lumi " << iL.luminosityBlock() << std::endl;
fakeLs_ = iL.luminosityBlock();
}
void DTHFakeReader::fillDescriptions(edm::ConfigurationDescriptions& descriptions) {
edm::ParameterSetDescription desc;
desc.setComment("Injector of generated DTH raw orbit fragments for DSAQ testing");
desc.addUntracked<bool>("fillRandom", false);
desc.addUntracked<unsigned int>("meanSize", 1024);
desc.addUntracked<unsigned int>("width", 1024);
desc.addUntracked<unsigned int>("injectErrPpm", 1024);
desc.addUntracked<std::vector<unsigned int>>("sourceIdList", std::vector<unsigned int>());
descriptions.add("DTHFakeReader", desc);
}
} //namespace evf
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