readrb.cc

//+
// File : readrb.cc
// Description : Continuously read a RingBuffer
//
// Author : Ryosuke Itoh, IPNS, KEK
// Date : 28 - Apr - 2012
//-
#include <string>
 
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
 
#include "framework/pcore/RingBuffer.h"
#include "framework/pcore/EvtMessage.h"
 
#define RBUFSIZE 100000000
#define MAXEVTSIZE 400000000
 
using namespace Belle2;
using namespace std;
 
int main(int argc, char** argv)
{
  if (argc < 3) {
    printf("file2rb : rbufname sleeptime(us)\n");
    exit(-1);
  }
 
  RingBuffer* rbuf = new RingBuffer(argv[1]);
  char* evbuf = new char[MAXEVTSIZE];
 
  int sltime = atoi(argv[2]);
 
  int nevt = 0;
  for (;;) {
    // Get a record from ringbuf
    int size;
    while ((size = rbuf->remq((int*)evbuf)) == 0) {
      //    printf ( "Rx : evtbuf is not available yet....\n" );
      //      usleep(100);
      usleep(20);
    }
    if (size < 0) exit(-1);
    EvtMessage* msg = new EvtMessage(evbuf);
    if (msg->type() == MSG_TERMINATE) {
      printf("EoF found. Exitting.....\n");
    }
    nevt++;
    if (nevt % 1000 == 0) printf("readrb : event = %d (size=%d)\n", nevt, *((int*)evbuf));
    usleep(sltime);
  }
}