artdaq_core  v3_05_00
RawFragmentHeader.hh
1 #ifndef artdaq_core_Data_detail_RawFragmentHeader_hh
2 #define artdaq_core_Data_detail_RawFragmentHeader_hh
3 // detail::RawFragmentHeader is an overlay that provides the user's view
4 // of the data contained within a Fragment. It is intended to be hidden
5 // from the user of Fragment, as an implementation detail. The interface
6 // of Fragment is intended to be used to access the data.
7 
8 //#include <cstddef>
9 #include <map>
10 #include "artdaq-core/Data/dictionarycontrol.hh"
11 #include "cetlib_except/exception.h"
12 #include "artdaq-core/Utilities/TimeUtils.hh"
13 
14 extern "C" {
15 #include <stdint.h>
16 }
17 
18 namespace artdaq {
19 namespace detail {
20 struct RawFragmentHeader;
21 }
22 } // namespace artdaq
23 
32 {
36  typedef unsigned long long RawDataType;
37 
38 #if HIDE_FROM_ROOT
39  typedef uint16_t version_t;
40  typedef uint64_t sequence_id_t;
41  typedef uint8_t type_t;
42  typedef uint16_t fragment_id_t;
43  typedef uint8_t metadata_word_count_t;
44  typedef uint64_t timestamp_t;
45 
46  // define special values for type_t
47  static constexpr type_t INVALID_TYPE = 0;
48  static constexpr type_t FIRST_USER_TYPE = 1;
49  static constexpr type_t LAST_USER_TYPE = 224;
50  static constexpr type_t FIRST_SYSTEM_TYPE = 225;
51  static constexpr type_t LAST_SYSTEM_TYPE = 255;
54  static constexpr type_t DataFragmentType = FIRST_SYSTEM_TYPE + 1;
55  static constexpr type_t InitFragmentType = FIRST_SYSTEM_TYPE + 2;
59  static constexpr type_t EmptyFragmentType = FIRST_SYSTEM_TYPE + 6;
61  static constexpr type_t ErrorFragmentType = FIRST_SYSTEM_TYPE + 8;
62 
67  static std::map<type_t, std::string> MakeSystemTypeMap()
68  {
69  return std::map<type_t, std::string>{
70  {type_t(DataFragmentType), "Data"},
71  {type_t(EmptyFragmentType), "Empty"},
72  {type_t(ErrorFragmentType), "Error"},
73  {type_t(InvalidFragmentType), "Invalid"},
74  {232, "Container"}};
75  }
76 
81  static std::map<type_t, std::string> MakeVerboseSystemTypeMap()
82  {
83  return std::map<type_t, std::string>{
84  {type_t(EndOfDataFragmentType), "EndOfData"},
85  {type_t(DataFragmentType), "Data"},
86  {type_t(InitFragmentType), "Init"},
87  {type_t(EndOfRunFragmentType), "EndOfRun"},
88  {type_t(EndOfSubrunFragmentType), "EndOfSubrun"},
89  {type_t(ShutdownFragmentType), "Shutdown"},
90  {type_t(EmptyFragmentType), "Empty"},
91  {type_t(ContainerFragmentType), "Container"}};
92  }
93 
99  static std::string SystemTypeToString(type_t type)
100  {
101  switch (type)
102  {
103  case INVALID_TYPE:
104  return "INVALID";
106  return "EndOfData";
107  case DataFragmentType:
108  return "Data";
109  case InitFragmentType:
110  return "Init";
112  return "EndOfRun";
114  return "EndOfSubrun";
116  return "Shutdown";
117  case EmptyFragmentType:
118  return "Empty";
120  return "Container";
121  }
122  return "Unknown";
123  }
124 
125  // Each of the following invalid values is chosen based on the
126  // size of the bitfield in which the corresponding data are
127  // encoded; if any of the sizes are changed, the corresponding
128  // values must be updated.
129  static const version_t InvalidVersion = 0xFFFF;
130  static const version_t CurrentVersion = 0x2;
131  static const sequence_id_t InvalidSequenceID = 0xFFFFFFFFFFFF;
132  static const fragment_id_t InvalidFragmentID = 0xFFFF;
133  static const timestamp_t InvalidTimestamp = 0xFFFFFFFFFFFFFFFF;
134 
139 
142 
144 
149 
150  // ****************************************************
151  // New fields MUST be added to the END of this list!!!
152  // ****************************************************
153 
158  static constexpr std::size_t num_words();
159 
165  void setUserType(uint8_t utype);
166 
172  void setSystemType(uint8_t stype);
173 
174  void touch();
175  struct timespec atime();
176  struct timespec getLatency(bool touch);
177 
178 #endif /* HIDE_FROM_ROOT */
179 };
180 
181 #if HIDE_FROM_ROOT
182 inline constexpr std::size_t
184 {
185  return sizeof(detail::RawFragmentHeader) / sizeof(RawDataType);
186 }
187 
188 // Compile-time check that the assumption made in num_words() above is
189 // actually true.
193  "sizeof(RawFragmentHeader) is not an integer "
194  "multiple of sizeof(RawDataType)!");
195 
196 inline void
198 {
199  if (utype < FIRST_USER_TYPE || utype > LAST_USER_TYPE)
200  {
201  throw cet::exception("InvalidValue")
202  << "RawFragmentHeader user types must be in the range of "
203  << ((int)FIRST_USER_TYPE) << " to " << ((int)LAST_USER_TYPE)
204  << " (bad type is " << ((int)utype) << ").";
205  }
206  type = utype;
207 }
208 
209 inline void
211 {
212  if (stype < FIRST_SYSTEM_TYPE /*|| stype > LAST_SYSTEM_TYPE*/)
213  {
214  throw cet::exception("InvalidValue")
215  << "RawFragmentHeader system types must be in the range of "
216  << ((int)FIRST_SYSTEM_TYPE) << " to " << ((int)LAST_SYSTEM_TYPE);
217  }
218  type = stype;
219 }
220 
221 inline void artdaq::detail::RawFragmentHeader::touch()
222 {
224  atime_ns = time.tv_nsec;
225  atime_s = time.tv_sec;
226 }
227 
228 inline struct timespec artdaq::detail::RawFragmentHeader::atime()
229 {
230  struct timespec ts;
231  ts.tv_nsec = atime_ns;
232  ts.tv_sec = atime_s;
233  return ts;
234 }
235 
236 inline struct timespec artdaq::detail::RawFragmentHeader::getLatency(bool touch)
237 {
238  auto a_time = atime();
240 
241  a_time.tv_sec = time.tv_sec - a_time.tv_sec;
242 
243  if (a_time.tv_nsec > time.tv_nsec)
244  {
245  a_time.tv_sec--;
246  a_time.tv_nsec = 1000000000 + time.tv_nsec - a_time.tv_nsec;
247  }
248  else
249  {
250  a_time.tv_nsec = time.tv_nsec - a_time.tv_nsec;
251  }
252 
253  if (touch)
254  {
255  atime_ns = time.tv_nsec;
256  atime_s = time.tv_sec;
257  }
258  return a_time;
259 }
260 #endif
261 
262 #endif /* artdaq_core_Data_detail_RawFragmentHeader_hh */
RawDataType metadata_word_count
The number of RawDataType words in the user-defined metadata.
RawDataType word_count
number of RawDataType words in this Fragment
static const sequence_id_t InvalidSequenceID
The sequence_id field is currently 48-bits.
static constexpr type_t FIRST_SYSTEM_TYPE
The first system type.
RawDataType type
The type of the fragment, either system or user-defined.
uint8_t type_t
type field is 8 bits
static std::map< type_t, std::string > MakeSystemTypeMap()
Returns a map of the most-commonly used system types.
void setSystemType(uint8_t stype)
Sets the type field to the specified system type.
static constexpr std::size_t num_words()
Returns the number of RawDataType words present in the header.
static constexpr type_t DataFragmentType
This Fragment holds data. Used for RawEvent Fragments sent from the EventBuilder to the Aggregator...
The RawFragmentHeader class contains the basic fields used by artdaq for routing Fragment objects thr...
RawDataType timestamp
The 64-bit timestamp field is the output of a user-defined clock used for building time-correlated ev...
static constexpr type_t InvalidFragmentType
Marks a Fragment as Invalid.
RawDataType sequence_id
The 48-bit sequence_id uniquely identifies events within the artdaq system.
RawDataType version
The version of the fragment.
RawDataType atime_s
Last access time of the Fragment, second part (measured from epoch)
static constexpr type_t ShutdownFragmentType
This Fragment indicates a system shutdown to art
static constexpr type_t LAST_USER_TYPE
The last user-accessible type (types above this number are system types.
RawDataType fragment_id
The fragment_id uniquely identifies a particular piece of hardware within the artdaq system...
static const version_t InvalidVersion
The version field is currently 16-bits.
void setUserType(uint8_t utype)
Sets the type field to the specified user type.
struct timespec get_realtime_clock()
Get the current time of day as a pair of seconds and nanoseconds (from clock_gettime(CLOCK_REALTIME, ...) system call)
Definition: TimeUtils.cc:58
uint64_t timestamp_t
timestamp field is 32 bits
RawDataType valid
Flag for whether the Fragment has been transported correctly through the artdaq system.
static constexpr type_t EmptyFragmentType
This Fragment contains no data and serves as a placeholder for when no data from a FragmentGenerator ...
static constexpr type_t ErrorFragmentType
This Fragment has experienced some error, and no attempt should be made to read it.
static constexpr type_t FIRST_USER_TYPE
The first user-accessible type.
static std::map< type_t, std::string > MakeVerboseSystemTypeMap()
Returns a map of all system types.
static const timestamp_t InvalidTimestamp
The timestamp field is currently 64-bits.
unsigned long long RawDataType
The RawDataType (currently a 64-bit integer) is the basic unit of data representation within artdaq ...
uint64_t sequence_id_t
sequence_id field is 48 bits
static const fragment_id_t InvalidFragmentID
The fragment_id field is currently 16-bits.
static const version_t CurrentVersion
The CurrentVersion field should be incremented whenever the RawFragmentHeader changes.
static constexpr type_t ContainerFragmentType
This Fragment is a ContainerFragment and analysis code should unpack it.
static constexpr type_t EndOfDataFragmentType
This Fragment indicates the end of data to art
static std::string SystemTypeToString(type_t type)
Print a system type&#39;s string name.
uint16_t version_t
version field is 16 bits
RawDataType atime_ns
Last access time of the Fragment, nanosecond part.
static constexpr type_t LAST_SYSTEM_TYPE
The last system type.
static constexpr type_t EndOfSubrunFragmentType
This Fragment indicates the end of a subrun to art
uint16_t fragment_id_t
fragment_id field is 16 bits
static constexpr type_t EndOfRunFragmentType
This Fragment indicates the end of a run to art
uint8_t metadata_word_count_t
metadata_word_count field is 8 bits
static constexpr type_t InitFragmentType
This Fragment holds the necessary data for initializing art
static constexpr type_t INVALID_TYPE
Marks a Fragment as Invalid.
RawDataType complete
Flag for whether the Fragment completely represents an event for its hardware.