// main.cpp
//
// sample code to demonstrate the leak of file handles when nftw() is used
// together with the FTW_CHDIR flag.
//

#include <ftw.h>
#include <string>
#include <sstream>
#include <iostream>
using namespace std;

#include <sys/types.h>
// #include <unistd.h>
#include <stdlib.h>

#ifndef MY_FLAGS
#   define MY_FLAGS 0
#endif


int my_callback(const char *fpath, const struct stat *sb, int tflag, struct FTW *ftwbuf)
{
    // cout << "file path=" << fpath << endl;
    return 0; /* 0 to tell nftw() to continue */
}


int main(int argc, char *argv[])
{
    // int flags=0;
    int flags=MY_FLAGS;
    for (int i=0; i<100; i++) {
        // cout << std::endl << "loop #" << i << std::endl;
				// note: it doesn't make a difference if "." or another
				//       existing directory is used as the 1st argument
        nftw("." , my_callback, 20, flags);
    }

    // now lets print a list of open filehandles
    ostringstream lsof_cmd;
    lsof_cmd << "lsof -p " << getpid();
    system(lsof_cmd.str().c_str());
    return 0;
}