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artdaq_core
v3_04_11
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00001 #ifndef artdaq_core_Data_ContainerFragment_hh 00002 #define artdaq_core_Data_ContainerFragment_hh 00003 00004 #include "artdaq-core/Data/Fragment.hh" 00005 #include "cetlib_except/exception.h" 00006 00007 //#include <ostream> 00008 //#include <vector> 00009 00010 // Implementation of "ContainerFragment", an artdaq::Fragment overlay class 00011 00012 namespace artdaq 00013 { 00014 class ContainerFragment; 00015 } 00016 00020 class artdaq::ContainerFragment 00021 { 00022 public: 00023 00024 static constexpr uint8_t CURRENT_VERSION = 1; 00025 static constexpr size_t CONTAINER_MAGIC = 0x00BADDEED5B1BEE5; 00026 00030 struct MetadataV0 00031 { 00035 static constexpr int CONTAINER_FRAGMENT_COUNT_MAX = 100; 00036 00037 typedef uint8_t data_t; 00038 typedef uint64_t count_t; 00039 00040 count_t block_count : 55; 00041 count_t fragment_type : 8; 00042 count_t missing_data : 1; 00043 00045 size_t index[CONTAINER_FRAGMENT_COUNT_MAX]; 00046 00048 static size_t const size_words = 8ul + CONTAINER_FRAGMENT_COUNT_MAX * sizeof(size_t) / sizeof(data_t); // Units of Header::data_t 00049 }; 00050 static_assert (sizeof(MetadataV0) == MetadataV0::size_words * sizeof(MetadataV0::data_t), "ContainerFragment::MetadataV0 size changed"); 00051 00055 struct Metadata 00056 { 00057 typedef uint8_t data_t; 00058 typedef uint64_t count_t; 00059 00060 count_t block_count : 16; 00061 count_t fragment_type : 8; 00062 count_t version : 4; 00063 count_t missing_data : 1; 00064 count_t has_index : 1; 00065 count_t unused_flag1 : 1; 00066 count_t unused_flag2 : 1; 00067 count_t unused : 32; 00068 00069 uint64_t index_offset; 00070 00072 static size_t const size_words = 16ul; // Units of Header::data_t 00073 }; 00074 static_assert (sizeof(Metadata) == Metadata::size_words * sizeof(Metadata::data_t), "ContainerFragment::Metadata size changed"); 00075 00076 Metadata const* UpgradeMetadata(MetadataV0 const* in) const 00077 { 00078 TLOG(TLVL_DEBUG, "ContainerFragment") << "Upgrading ContainerFragment::MetadataV0 into new ContainerFragment::Metadata"; 00079 assert(in->block_count < std::numeric_limits<Metadata::count_t>::max()); 00080 metadata_alloc_ = true; 00081 Metadata md; 00082 md.block_count = in->block_count; 00083 md.fragment_type = in->fragment_type; 00084 md.has_index = 0; 00085 md.missing_data = in->missing_data; 00086 md.version = 0; 00087 index_ptr_ = in->index; 00088 metadata_ = new Metadata(md); 00089 return metadata_; 00090 } 00091 00098 explicit ContainerFragment(Fragment const& f) : artdaq_Fragment_(f), index_ptr_(nullptr), index_alloc_(false),metadata_(nullptr), metadata_alloc_(false) { } 00099 00100 virtual ~ContainerFragment() 00101 { 00102 if (index_alloc_) 00103 { 00104 delete[] index_ptr_; 00105 } 00106 if (metadata_alloc_) 00107 { 00108 delete metadata_; 00109 } 00110 } 00111 00116 Metadata const* metadata() const 00117 { 00118 if (metadata_alloc_) return metadata_; 00119 00120 if (artdaq_Fragment_.sizeBytes() - artdaq_Fragment_.dataSizeBytes() - sizeof(detail::RawFragmentHeader) == sizeof(MetadataV0)) 00121 { 00122 return UpgradeMetadata(artdaq_Fragment_.metadata<MetadataV0>()); 00123 } 00124 00125 return artdaq_Fragment_.metadata<Metadata>(); 00126 } 00127 00132 Metadata::count_t block_count() const { return metadata()->block_count; } 00137 Fragment::type_t fragment_type() const { return static_cast<Fragment::type_t>(metadata()->fragment_type); } 00142 bool missing_data() const { return static_cast<bool>(metadata()->missing_data); } 00143 00148 void const* dataBegin() const 00149 { 00150 return reinterpret_cast<void const *>(&*artdaq_Fragment_.dataBegin()); 00151 } 00152 00157 void const* dataEnd() const 00158 { 00159 return reinterpret_cast<void const *>(reinterpret_cast<uint8_t const *>(dataBegin()) + lastFragmentIndex()); 00160 } 00161 00168 FragmentPtr at(size_t index) const 00169 { 00170 if (index >= block_count() || block_count() == 0) 00171 { 00172 throw cet::exception("ArgumentOutOfRange") << "Buffer overrun detected! ContainerFragment::at was asked for a non-existent Fragment!"; 00173 } 00174 FragmentPtr frag(new Fragment(fragSize(index) / sizeof(RawDataType) - detail::RawFragmentHeader::num_words())); 00175 memcpy(frag->headerAddress(), reinterpret_cast<uint8_t const *>(dataBegin()) + fragmentIndex(index), fragSize(index)); 00176 return frag; 00177 } 00178 00185 size_t fragSize(size_t index) const 00186 { 00187 if (index >= block_count() || block_count() == 0) 00188 { 00189 throw cet::exception("ArgumentOutOfRange") << "Buffer overrun detected! ContainerFragment::fragSize was asked for a non-existent Fragment!"; 00190 } 00191 auto end = fragmentIndex(index + 1); 00192 if (index == 0) return end; 00193 return end - fragmentIndex(index); 00194 } 00195 00202 FragmentPtr operator[](size_t index) const 00203 { 00204 return this->at(index); 00205 } 00206 00213 size_t fragmentIndex(size_t index) const 00214 { 00215 if (index > block_count()) 00216 { 00217 throw cet::exception("ArgumentOutOfRange") << "Buffer overrun detected! ContainerFragment::fragmentIndex was asked for a non-existent Fragment!"; 00218 } 00219 if (index == 0) { return 0; } 00220 00221 auto index_ptr = get_index_(); 00222 00223 return index_ptr[index - 1]; 00224 } 00225 00230 size_t lastFragmentIndex() const 00231 { 00232 return fragmentIndex(block_count()); 00233 } 00234 00235 protected: 00236 00241 static constexpr size_t words_per_frag_word_() 00242 { 00243 return sizeof(Fragment::value_type) / sizeof(Metadata::data_t); 00244 } 00245 00246 const size_t* create_index_() const 00247 { 00248 TLOG(TLVL_TRACE, "ContainerFragment") << "Creating new index for ContainerFragment"; 00249 auto tmp = new size_t[metadata()->block_count + 1]; 00250 00251 auto current = reinterpret_cast<uint8_t const*>(artdaq_Fragment_.dataBegin()); 00252 size_t offset = 0; 00253 for (int ii = 0; ii < metadata()->block_count; ++ii) 00254 { 00255 auto this_size = reinterpret_cast<const detail::RawFragmentHeader*>(current)->word_count * sizeof(RawDataType); 00256 offset += this_size; 00257 tmp[ii] = offset; 00258 current += this_size; 00259 } 00260 tmp[metadata()->block_count] = CONTAINER_MAGIC; 00261 return tmp; 00262 } 00263 00264 void reset_index_ptr_() const 00265 { 00266 TLOG(TLVL_TRACE, "ContainerFragment") << "Request to reset index_ptr recieved. has_index=" << metadata()->has_index << ", Check word = " << std::hex 00267 << *(reinterpret_cast<size_t const*>(artdaq_Fragment_.dataBeginBytes() + metadata()->index_offset) + metadata()->block_count); 00268 if (metadata()->has_index && *(reinterpret_cast<size_t const*>(artdaq_Fragment_.dataBeginBytes() + metadata()->index_offset) + metadata()->block_count) == CONTAINER_MAGIC) 00269 { 00270 TLOG(TLVL_TRACE, "ContainerFragment") << "Setting index_ptr to found valid index"; 00271 index_ptr_ = reinterpret_cast<size_t const*>(artdaq_Fragment_.dataBeginBytes() + metadata()->index_offset); 00272 } 00273 else 00274 { 00275 TLOG(TLVL_TRACE, "ContainerFragment") << "Index invalid or not found, allocating new index"; 00276 if (index_alloc_) 00277 { 00278 delete[] index_ptr_; 00279 } 00280 00281 index_alloc_ = true; 00282 index_ptr_ = create_index_(); 00283 } 00284 } 00285 00286 const size_t* get_index_() const 00287 { 00288 if (index_ptr_ != nullptr) return index_ptr_; 00289 00290 reset_index_ptr_(); 00291 00292 return index_ptr_; 00293 } 00294 00295 private: 00296 Fragment const& artdaq_Fragment_; 00297 00298 mutable const size_t* index_ptr_; 00299 mutable bool index_alloc_; 00300 mutable const Metadata* metadata_; 00301 mutable bool metadata_alloc_; 00302 }; 00303 00304 #endif /* artdaq_core_Data_ContainerFragment_hh */