Streamer/interface/MsgHeader.h

0001 #ifndef IOPool_Streamer_MsgHeader_h
0002 #define IOPool_Streamer_MsgHeader_h
0003
0004 #include "IOPool/Streamer/interface/MsgTools.h"
0005 // as it is in memory of file
0006 namespace edm::streamer {
0007   struct Header {
0008     Header(uint32 code, uint32 size) : code_(code) { convert(size, size_); }
0009
0010     uint8 code_;        // type of the message
0011     char_uint32 size_;  // of entire message including all headers
0012
0013     // 20-Jul-2006, KAB: added enumeration for message types
0014     enum Codes {
0015       INVALID = 0,
0016       INIT = 1,
0017       EVENT = 2,
0018       DONE = 3,  // EOFRECORD = 4 is no longer used
0019       HEADER_REQUEST = 5,
0020       EVENT_REQUEST = 6,
0021       CONS_REG_REQUEST = 7,
0022       CONS_REG_RESPONSE = 8,
0023       DQM_INIT = 9,
0024       DQM_EVENT = 10,
0025       DQMEVENT_REQUEST = 11,
0026       INIT_SET = 12,
0027       NEW_INIT_AVAILABLE = 13,
0028       ERROR_EVENT = 14,
0029       FILE_CLOSE_REQUEST = 15,
0030       SPARE1 = 16,
0031       SPARE2 = 17,
0032       PADDING = 255  //reserved for padding
0033     };
0034   };
0035
0036   // as we need to see it
0037   class HeaderView {
0038   public:
0039     HeaderView(void* buf) {
0040       Header* h = (Header*)buf;
0041       code_ = h->code_;
0042       size_ = convert32(h->size_);
0043     }
0044
0045     uint32 code() const { return code_; }
0046     uint32 size() const { return size_; }
0047
0048   private:
0049     uint32 code_;
0050     uint32 size_;
0051   };
0052 }  // namespace edm::streamer
0053 #endif