MsgHeader.h

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#ifndef IOPool_Streamer_MsgHeader_h
#define IOPool_Streamer_MsgHeader_h

#include "IOPool/Streamer/interface/MsgTools.h"
// as it is in memory of file
struct Header {
  Header(uint32 code, uint32 size) : code_(code) { convert(size, size_); }

  uint8 code_;        // type of the message
  char_uint32 size_;  // of entire message including all headers

  // 20-Jul-2006, KAB: added enumeration for message types
  enum Codes {
    INVALID = 0,
    INIT = 1,
    EVENT = 2,
    DONE = 3,  // EOFRECORD = 4 is no longer used
    HEADER_REQUEST = 5,
    EVENT_REQUEST = 6,
    CONS_REG_REQUEST = 7,
    CONS_REG_RESPONSE = 8,
    DQM_INIT = 9,
    DQM_EVENT = 10,
    DQMEVENT_REQUEST = 11,
    INIT_SET = 12,
    NEW_INIT_AVAILABLE = 13,
    ERROR_EVENT = 14,
    FILE_CLOSE_REQUEST = 15,
    SPARE1 = 16,
    SPARE2 = 17,
    PADDING = 255  //reserved for padding
  };
};

// as we need to see it
class HeaderView {
public:
  HeaderView(void* buf) {
    Header* h = (Header*)buf;
    code_ = h->code_;
    size_ = convert32(h->size_);
  }

  uint32 code() const { return code_; }
  uint32 size() const { return size_; }

private:
  uint32 code_;
  uint32 size_;
};

#endif