Serializing histogram objects

ROOT
5

Hi Luis,

do the following:

#include <TMessage.h>

class MyMessage : public TMessage {
public:
   MyMessage(void *buf, Int_t len) : TMessage(buf, len) { }
};


for(Int_t i = 1; i < size; i++) {
   int lg;
   OOMPI_COMM_WORLD[i].Recv(lg); //buffer length

   char *kg = new char [lg]; //buffer
   OOMPI_COMM_WORLD[i].Recv(kg,lg);

   msg = new MyMessage(kg, lg);

   TH1D *h1s = (TH1D *) msg->ReadObject(msg->GetClass());

   h1s->Draw(); 
}

MyMessage is needed since the TMessage(void*,Int_t) method is protected.

Cheers, Fons.

1 Like