removerb.cc

//+
// File : removerb.cc
// Description : remove RingBuffer cleanly using the info in the path file
//
// Author : Ryosuke Itoh, IPNS, KEK
// Date : 20 - Dec - 2013
//-
 
#include <string>
 
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
 
#include <sys/ipc.h>
#include <sys/shm.h>
#include <sys/sem.h>
 
#include "framework/pcore/RingBuffer.h"
 
using namespace Belle2;
using namespace std;
 
int main(int argc, char** argv)
{
  if (argc < 2) {
    printf("remove : rbufname \n");
    exit(-1);
  }
  string pathname = string("/tmp/") + string(getenv("USER"))
                    + string("_RB_") + string(argv[1]);
  FILE* fd = fopen(pathname.c_str(), "r");
  if (fd == NULL) {
    printf("[removerb] No such RingBuffer : %s\n", argv[1]);
    exit(-1);
  }
  int shmid, semid;
  fscanf(fd, "%d", &shmid);
  fscanf(fd, "%d", &semid);
  fclose(fd);
 
  printf("Removing shmid = %d, semid = %d\n", shmid, semid);
  shmctl(shmid, IPC_RMID, (struct shmid_ds*) 0);
  semctl(semid, 1, IPC_RMID);
  printf("Removing pathfile = %s\n", pathname.c_str());
  unlink(pathname.c_str());
 
  // remove id file
  char fname[1024];
  sscanf(fname, "/tmp/SHM%d-SEM%d-RB_%s", argv[1]);
  unlink(fname);
}